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Effectiveness, Safety, and Tolerability Study of Oxymorphone Immediate Release (IR) Oral Liquid in Post Surgical Pediatric Subjects

An Open-Label, Non-randomized, Multicenter, Ascending Dose by Age, Single- and Multiple-Dose Evaluation of the Effectiveness, Safety, and Tolerability of Oral Liquid Oxymorphone HCl Immediate-Release Oral Liquid for Acute Postoperative Pain in Pediatric Subjects

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01210352
Enrollment
61
Registered
2010-09-28
Start date
2010-12-13
Completion date
2017-10-06
Last updated
2021-08-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Post Operative Pain

Keywords

surgical pain, acute pain, Acute Post Surgical Pain

Brief summary

The purpose of this study is to evaluate the effectiveness, tolerability, and safety of oxymorphone immediate release (IR) oral liquid as an analgesic for acute postoperative pain in pediatric subjects. This post marketing study was required by the FDA. Endo Pharmaceuticals Inc. no longer promotes opioids and no longer markets Opana® ER.

Interventions

Comparison of different dosages of drug, 0.05mg/kg, 0.10mg/kg, 0.15mg/kg or 0.20mg/kg oral liquid oxymorphone

Sponsors

Endo Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
0 Years to 12 Years
Healthy volunteers
No

Inclusion criteria

1. Males or females between 2 to ≤12 years of age. Females of child-bearing potential must be practicing abstinence or using a medically acceptable form of contraception (eg, intrauterine device, hormonal birth control, or double barrier method). For the purpose of this study, all peri- and post-pubertal females will be considered to be of child-bearing potential unless they are biologically sterile or surgically sterile for more than 1 year 2. Subjects must be at least 10 kg and BMI ≤30 3. Scheduled to have a surgery for which oral opioid analgesia will be needed to manage postoperative pain for at least 24 hours (Single-Dose Phase) or 48 hours (Multiple-Dose Phase)following intraoperative and/or postoperative parenteral analgesia 4. Be hospital inpatients, expected to be hospitalized for at least 24 hours (Single-Dose Phase) and 48 hours (Multiple-Dose Phase) following the initial administration of oxymorphone immediate release 5. Available lab results, either intraoperatively (prior to surgical incision) or from within 21 days preoperatively, for clinical chemistry and hematology laboratory analytes (the results must have been reviewed by the Investigator for study eligibility) 6. Able to provide pain assessment evaluations using an age-appropriate instrument provided in the protocol 7. On an intravenous analgesic regimen utilizing a short-acting opioid analgesic following surgery AND anticipated to be switched to an oral opioid as part of the analgesic regimen (according to institution SOC) 8. Demonstrated the ability to tolerate clear fluids following surgery according to the SOC at each institution 9. Informed of the nature of the study and written informed consent has been obtained from the legally responsible parent(s)/legal guardian(s) 10. Provided assent in accordance with IRB requirements 11. Line in place for blood sampling

Exclusion criteria

1. Known allergies or sensitivities to oxymorphone or other opioid analgesics 2. Known sensitivity to any component of the study drug 3. Life expectancy \<4 weeks 4. Positive pregnancy test at screening (females of reproductive age only) 5. Pregnant and/or lactating 6. Cyanotic heart disease 7. Respiratory, hepatic, renal, neurological, psychological disease, or any other clinically significant condition that would, in the Investigator's opinion, preclude participation in the study 8. Preoperative opioids administered for a period of more than 72 hours in duration 9. Abdominal trauma that would interfere with absorption of study drug 10. Increased intracranial pressure 11. Respiratory condition requiring intubation 12. History of uncontrolled seizures that are not being managed with anticonvulsants 13. Significant prior history of substance abuse or alcohol abuse 14. Received any investigational drug within 30 days prior to the first dose of study drug, or are scheduled to receive an investigational drug other than oxymorphone HCl immediate-release oral liquid during the course of the study 15. Received a monoamine oxidase inhibitor (MAOI) within 14 days prior to the start of study drug 16. Received oxycodone or oxymorphone within 48 hours prior to study start 17. Investigator anticipates that the subject and/or parent(s)/legal guardian(s) would be unable to comply with the protocol 18. Subject (and/or parent\[s\]/legal guardian\[s\]) is(are) unable to communicate effectively with study personnel at an age-appropriate level

Design outcomes

Primary

MeasureTime frameDescription
Pain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose PhaseBaseline, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post dose; and at the time of rescueFaces Pain Scale-Revised (FPS-R) was used for the 6 to ≤ 12 years age group, (0 = no pain and 10 = very much pain). Face, Legs, Activity, Cry, and Consolability (FLACC) behavior measurement was used for the 2 years to \< 6 years and 0 years to \< 2 years age groups, (0 = no pain and 10 = very much pain).
Descriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose PhaseBaseline (prior to dose); 15, 30 minutes, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post-dose; and at the time of rescueFaces Pain Scale-Revised (FPS-R) was used for the 6 to ≤ 12 years age group, (0 = no pain and 10 = very much pain). Face, Legs, Activity, Cry, and Consolability (FLACC) behavior measurement was used for the 2 years to \< 6 years and 0 years to \< 2 years age groups, (0 = no pain and 10 = very much pain). PID was calculated as the pain intensity score at baseline minus the current pain intensity score at each corresponding time point.
Pain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseBaseline, 0.5, 1, 1.5, 2, hours post dose, and immediately prior to all remaining doses administered through 48 hours after administration of the initial dose; and at time of rescueFaces Pain Scale-Revised (FPS-R) was used for the 6 to ≤ 12 years age group, (0 = no pain and 10 = very much pain). Face, Legs, Activity, Cry, and Consolability (FLACC) behavior measurement was used for the 2 years to \< 6 years and 0 years to \< 2 years age groups, (0 = no pain and 10 = very much pain)
Descriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose Phase0.5, 1, 1.5, 2, hours post dose 1 through to Dose 12, 0 Hour; End of Study/Early TerminationFaces Pain Scale-Revised (FPS-R) was used for the 6 to ≤ 12 years age group, (0 = no pain and 10 = very much pain). Face, Legs, Activity, Cry, and Consolability (FLACC) behavior measurement was used for the 2 years to \< 6 years and 0 years to \< 2 years age groups, (0 = no pain and 10 = very much pain). PID is calculated as the pain intensity score at baseline minus the current pain intensity score at each corresponding time point.
Number (%) of Subjects With Rescue Medication Use by Age and Dose Group in Multiple-Dose PhaseRescue Medication UseRescue Medication Use in Multiple Dose Phase

Secondary

MeasureTime frameDescription
Oxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseAUC0-inf: Area under the concentration versus time curve from time 0 to infinity, calculated as AUC0-t + Clast/λn
Oxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseAUC0-24: Area under the concentration versus time curve from time 0 to 24 hours calculated by linear trapezoidal rule
Oxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doset1/2: Terminal half-life, calculated as λn/(ln 2)
Dose-Normalized Oxymorphone CL/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseCL/F: Apparent oral clearance, calculated as Dose/AUC0-inf
Dose-Normalized Oxymorphone V/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseV/F: Apparent volume of distribution, calculated as Dose/(AUC0-inf \* λn)
Oxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7Cmax: Maximum plasma concentration; the highest concentration observed during a dosage interval
Oxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7Tmax: The time at which Cmax was observed
Oxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7Clast: Minimum plasma concentration; the last concentration observed during a dosage interval
Oxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7Tlast: The time at which Clast was observed
Oxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7AUC0-t: Area under the concentration versus time curve from time 0 to the last measured concentration (Clast) calculated by linear trapezoidal rule
Oxymorphone AUC0-inf Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7AUC0-inf: Area under the concentration versus time curve from time 0 to infinity, calculated as AUC0-t + Clast/λn
Oxymorphone AUC0-24 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7AUC0-24: Area under the concentration versus time curve from time 0 to 24 hours calculated by linear trapezoidal rule
Oxymorphone t1/2 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7t1/2: Terminal half-life, calculated as λn/(ln 2)
6 Beta-Hydroxyoxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseCmax: Maximum plasma concentration; the highest concentration observed during a dosage interval
6 Beta-Hydroxyoxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseTmax: The time at which Cmax was observed
6 Beta-Hydroxyoxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseClast: Minimum plasma concentration; the last concentration observed during a dosage interval
6 Beta-Hydroxyoxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseTlast: The time at which Clast was observed
6 Beta-Hydroxyoxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseAUC0-t: Area under the concentration versus time curve from time 0 to the last measured concentration (Clast) calculated by linear trapezoidal rule
6 Beta-Hydroxyoxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseAUC0-inf: Area under the concentration versus time curve from time 0 to infinity, calculated as AUC0-t + Clast/λn
6 Beta-Hydroxyoxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseAUC0-24: Area under the concentration versus time curve from time 0 to 24 hours calculated by linear trapezoidal rule
6 Beta-Hydroxyoxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doset1/2: Terminal half-life, calculated as λn/(ln 2)
Dose-Normalized 6 Beta-Hydroxyoxymorphone CL/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseCL/F: Apparent oral clearance, calculated as Dose/AUC0-inf
Dose-Normalized 6 Beta-Hydroxyoxymorphone V/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseV/F: Apparent volume of distribution, calculated as Dose/(AUC0-inf \* λn)
6 Beta-Hydroxyoxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7Cmax: Maximum plasma concentration; the highest concentration observed during a dosage interval
6 Beta-Hydroxyoxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7Tmax: The time at which Cmax was observed
6 Beta-Hydroxyoxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7Clast: Minimum plasma concentration; the last concentration observed during a dosage interval
6 Beta-Hydroxyoxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7Tlast: The time at which Clast was observed
6 Beta-Hydroxyoxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7AUC0-t: Area under the concentration versus time curve from time 0 to the last measured concentration (Clast) calculated by linear trapezoidal rule
6 Beta-Hydroxyoxymorphone AUC0-inf Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7AUC0-inf: Area under the concentration versus time curve from time 0 to infinity, calculated as AUC0-t + Clast/λn
6 Beta-Hydroxyoxymorphone AUC0-24 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7AUC0-24: Area under the concentration versus time curve from time 0 to 24 hours calculated by linear trapezoidal rule
Oxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseCmax: Maximum plasma concentration; the highest concentration observed during a dosage interval
6 Beta-Hydroxyoxymorphone t1/2 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7t1/2: Terminal half-life, calculated as λn/(ln 2)
Oxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseTmax: The time at which Cmax was observed
Oxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseClast: Minimum plasma concentration; the last concentration observed during a dosage interval
Oxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseTlast: The time at which Clast was observed
Oxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseSerial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-doseAUC0-t: Area under the concentration versus time curve from time 0 to the last measured concentration (Clast) calculated by linear trapezoidal rule

Countries

United States

Participant flow

Participants by arm

ArmCount
Single Dose Phase 6 to ≤12 Years Age Group: 0.05 mg/kg
6 to ≤12 year age group in the Single Dose Phase given 0.05 mg/kg oxymorphone HCl IR oral liquid
6
Single-Dose Phase 6 to ≤12 Years Age Group: 0.10 mg/kg
6 to ≤12 year age group in the Single Dose Phase given 0.10 mg/kg oxymorphone HCl IR oral liquid
6
Single Dose Phase 6 to ≤12 Years Age Group: 0.20 mg/kg
6 to ≤12 year age group in the Single Dose Phase given 0.20 mg/kg oxymorphone HCl IR oral liquid
7
Single Dose Phase 2 to <6 Years Age Group: 0.05 mg/kg
2 to \<6 Years age group in the Single Dose Phase given 0.05 mg/kg oxymorphone HCl IR oral liquid
7
Single Dose Phase 2 to <6 Years Age Group: 0.10 mg/kg
2 to \<6 Years age group in the Single Dose Phase given 0.10 mg/kg oxymorphone HCl IR oral liquid
6
Single Dose Phase 2 to <6 Years Age Group: 0.20 mg/kg
2 to \<6 Years age group in the Single Dose Phase given 0.20 mg/kg oxymorphone HCl IR oral liquid
6
Single Dose Phase 0 to < 2 Years Age Group: 0.05 mg/kg
0 to \< 2 Years age group in the Single Dose Phase given 0.05 mg/kg oxymorphone HCl IR oral liquid
7
Multiple Dose Phase 6 to ≤12 Years Age Group: 0.20 mg/kg
6 to ≤12 year age group in the Multiple Dose Phase given 0.20 mg/kg oxymorphone HCl IR oral liquid
10
Multiple Dose Phase 2 to <6 Years Age Group: 0.20 mg/kg
2 to \<6 year age group in the Multiple Dose Phase given 0.20 mg/kg oxymorphone HCl IR oral liquid
6
Total61

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008
Overall StudyAdverse Event000000021
Overall StudyLack of Efficacy000000100
Overall StudyPatient Discharged Early001000000
Overall StudyPhysician Decision000000012
Overall StudyWithdrawal by Subject001000101

Baseline characteristics

CharacteristicSingle Dose Phase 6 to ≤12 Years Age Group: 0.05 mg/kgTotalMultiple Dose Phase 2 to <6 Years Age Group: 0.20 mg/kgMultiple Dose Phase 6 to ≤12 Years Age Group: 0.20 mg/kgSingle Dose Phase 0 to < 2 Years Age Group: 0.05 mg/kgSingle Dose Phase 2 to <6 Years Age Group: 0.20 mg/kgSingle Dose Phase 2 to <6 Years Age Group: 0.10 mg/kgSingle Dose Phase 2 to <6 Years Age Group: 0.05 mg/kgSingle Dose Phase 6 to ≤12 Years Age Group: 0.20 mg/kgSingle-Dose Phase 6 to ≤12 Years Age Group: 0.10 mg/kg
Age, Continuous8.3 years
STANDARD_DEVIATION 1.75
5.8 years
STANDARD_DEVIATION 3.56
3.8 years
STANDARD_DEVIATION 1.17
9.6 years
STANDARD_DEVIATION 1.9
0.4 years
STANDARD_DEVIATION 0.53
3.5 years
STANDARD_DEVIATION 1.38
3.5 years
STANDARD_DEVIATION 1.38
3.4 years
STANDARD_DEVIATION 1.27
9.0 years
STANDARD_DEVIATION 2.16
8.7 years
STANDARD_DEVIATION 1.86
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants3 Participants0 Participants0 Participants0 Participants2 Participants0 Participants0 Participants1 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
6 Participants58 Participants6 Participants10 Participants7 Participants4 Participants6 Participants7 Participants6 Participants6 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants3 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants2 Participants
Race (NIH/OMB)
Black or African American
2 Participants12 Participants1 Participants3 Participants1 Participants0 Participants1 Participants3 Participants0 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
4 Participants45 Participants5 Participants7 Participants6 Participants6 Participants4 Participants4 Participants6 Participants3 Participants
Sex: Female, Male
Female
1 Participants26 Participants0 Participants5 Participants1 Participants6 Participants3 Participants2 Participants6 Participants2 Participants
Sex: Female, Male
Male
5 Participants35 Participants6 Participants5 Participants6 Participants0 Participants3 Participants5 Participants1 Participants4 Participants
Weight35.25 kg
STANDARD_DEVIATION 11.725
25.84 kg
STANDARD_DEVIATION 16.311
17.83 kg
STANDARD_DEVIATION 2.701
41.81 kg
STANDARD_DEVIATION 18.103
9.10 kg
STANDARD_DEVIATION 3.106
17.88 kg
STANDARD_DEVIATION 4.869
15.77 kg
STANDARD_DEVIATION 4.303
18.76 kg
STANDARD_DEVIATION 4.026
37.26 kg
STANDARD_DEVIATION 20.613
30.33 kg
STANDARD_DEVIATION 17.731

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
deaths
Total, all-cause mortality
0 / 60 / 60 / 70 / 70 / 60 / 60 / 70 / 100 / 6
other
Total, other adverse events
5 / 64 / 64 / 77 / 75 / 63 / 64 / 710 / 104 / 6
serious
Total, serious adverse events
0 / 61 / 60 / 71 / 70 / 60 / 60 / 72 / 100 / 6

Outcome results

Primary

Descriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose Phase

Faces Pain Scale-Revised (FPS-R) was used for the 6 to ≤ 12 years age group, (0 = no pain and 10 = very much pain). Face, Legs, Activity, Cry, and Consolability (FLACC) behavior measurement was used for the 2 years to \< 6 years and 0 years to \< 2 years age groups, (0 = no pain and 10 = very much pain). PID is calculated as the pain intensity score at baseline minus the current pain intensity score at each corresponding time point.

Time frame: 0.5, 1, 1.5, 2, hours post dose 1 through to Dose 12, 0 Hour; End of Study/Early Termination

Population: Effectiveness Population.IDMC recommended dose: 0.20 mg/kg oxymorphone HCl oral solution for the Multiple-dose Phase. Therefore, the analyses were conducted in a total of 16 subjects ranging from 2 to ≤12 years who received the dose of 0.20 mg/kg oxymorphone HCl oral solution as shown in the table of baseline characteristic in the participant flow.

ArmMeasureGroupValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 6, 0 Hour1.0 score on a scaleStandard Deviation 2.58
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 1, 1 Hour Post-Dose0.9 score on a scaleStandard Deviation 2.67
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 7, 0 Hour0.5 score on a scaleStandard Deviation 2.52
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 8, 0 Hour-2.0 score on a scaleStandard Deviation 2
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 9, 0 Hour2.7 score on a scaleStandard Deviation 1.15
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 10, 0 Hour2.0 score on a scaleStandard Deviation 2
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 11, 0 Hour3.0 score on a scaleStandard Deviation 1.41
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 12, 0 Hour0.0 score on a scaleStandard Deviation 5.66
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseEnd of Study/Early Termination-0.5 score on a scaleStandard Deviation 1.91
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 1, 30 Minutes Post-Dose0.4 score on a scaleStandard Deviation 2.19
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 3, 0 Hour-3.5 score on a scaleStandard Deviation 4.43
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 1, 2 Hours Post-Dose0.0 score on a scaleStandard Deviation 1.85
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 4, 0 Hour-0.8 score on a scaleStandard Deviation 3.03
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 1, 1.5 Hours Post-Dose1.1 score on a scaleStandard Deviation 3.02
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 5, 0 Hour1.0 score on a scaleStandard Deviation 1.15
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 2, 0 Hour-2.3 score on a scaleStandard Deviation 3.88
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseEnd of Study/Early Termination3.5 score on a scaleStandard Deviation 3.11
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 1, 30 Minutes Post-Dose2.2 score on a scaleStandard Deviation 2.79
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 1, 1 Hour Post-Dose2.0 score on a scaleStandard Deviation 3.46
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 1, 1.5 Hours Post-Dose4.8 score on a scaleStandard Deviation 3.3
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 1, 2 Hours Post-Dose4.8 score on a scaleStandard Deviation 3.3
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 2, 0 Hour0.3 score on a scaleStandard Deviation 1.53
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 3, 0 Hour1.7 score on a scaleStandard Deviation 0.58
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 4, 0 Hour3.0 score on a scaleStandard Deviation 1.41
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 5, 0 Hour2.5 score on a scaleStandard Deviation 0.71
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of Pain Intensity Difference (PID) by Age Group and Time Points in Multiple-Dose PhaseDose 6, 0 Hour2.0 score on a scale
Primary

Descriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase

Faces Pain Scale-Revised (FPS-R) was used for the 6 to ≤ 12 years age group, (0 = no pain and 10 = very much pain). Face, Legs, Activity, Cry, and Consolability (FLACC) behavior measurement was used for the 2 years to \< 6 years and 0 years to \< 2 years age groups, (0 = no pain and 10 = very much pain). PID was calculated as the pain intensity score at baseline minus the current pain intensity score at each corresponding time point.

Time frame: Baseline (prior to dose); 15, 30 minutes, 1, 1.5, 2, 3, 4, 6, 8, 12, and 24 hours post-dose; and at the time of rescue

Population: Effectiveness Population. The analyses performed for this study report did not differentiate the pain intensity and pain intensity difference by age/dose combination.~The analyses were conducted by age group alone and results are presented accordingly.

ArmMeasureGroupValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase12 Hours Post-Dose3.3 score on a scaleStandard Deviation 5.77
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase2 Hours Post-Dose1.5 score on a scaleStandard Deviation 4.03
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase8 Hours Post-Dose1.3 score on a scaleStandard Deviation 2.31
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase4 Hours Post-Dose2.7 score on a scaleStandard Deviation 4.21
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase3 Hours Post-Dose3.0 score on a scaleStandard Deviation 2
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase15 Minutes Post-Dose1.1 score on a scaleStandard Deviation 4.24
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase1 Hour Post-Dose2.4 score on a scaleStandard Deviation 3.67
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase30 Minutes Post-Dose1.6 score on a scaleStandard Deviation 3.33
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase6 Hours Post-Dose3.1 score on a scaleStandard Deviation 4.14
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase1.5 Hours Post-Dose3.0 score on a scaleStandard Deviation 3.86
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase3 Hours Post-Dose-1.0 score on a scaleStandard Deviation 2
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase15 Minutes Post-Dose2.1 score on a scaleStandard Deviation 2.56
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase30 Minutes Post-Dose2.1 score on a scaleStandard Deviation 2.49
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase1 Hour Post-Dose2.6 score on a scaleStandard Deviation 3.1
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase1.5 Hours Post-Dose3.8 score on a scaleStandard Deviation 3.84
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase2 Hours Post-Dose2.6 score on a scaleStandard Deviation 3.4
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase4 Hours Post-Dose2.5 score on a scaleStandard Deviation 3.24
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase6 Hours Post-Dose3.0 score on a scaleStandard Deviation 2.4
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase8 Hours Post-Dose2.4 score on a scaleStandard Deviation 2.92
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase12 Hours Post-Dose3.2 score on a scaleStandard Deviation 2.32
2 Years to < 6 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase24 Hours Post-Dose3.0 score on a scaleStandard Deviation 2.16
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase24 Hours Post-Dose0.0 score on a scaleStandard Deviation 0
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase6 Hours Post-Dose1.0 score on a scaleStandard Deviation 2.71
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase30 Minutes Post-Dose2.0 score on a scaleStandard Deviation 2.45
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase12 Hours Post-Dose1.7 score on a scaleStandard Deviation 2.89
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase8 Hours Post-Dose1.7 score on a scaleStandard Deviation 2.89
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase3 Hours Post-Dose2.0 score on a scaleStandard Deviation 2.31
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase2 Hours Post-Dose2.0 score on a scaleStandard Deviation 2.45
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase15 Minutes Post-Dose1.1 score on a scaleStandard Deviation 4.06
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase4 Hours Post-Dose1.0 score on a scaleStandard Deviation 2.83
0 Years to < 2 Years Age Group in Single Dose PhaseDescriptive Statistics of the Pain Intensity Difference (PID) by Age Group and Time Points in Single-Dose Phase1 Hour Post-Dose2.3 score on a scaleStandard Deviation 1.98
Primary

Number (%) of Subjects With Rescue Medication Use by Age and Dose Group in Multiple-Dose Phase

Rescue Medication Use in Multiple Dose Phase

Time frame: Rescue Medication Use

Population: Effectiveness Population.IDMC recommended dose: 0.20 mg/kg oxymorphone HCl oral solution for the Multiple-dose Phase. Therefore, the analyses were conducted in a total of 16 subjects ranging from 2 to ≤12 years who received the dose of 0.20 mg/kg oxymorphone HCl oral solution as shown in the table of baseline characteristic in the participant flow.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
6 Years to ≤ 12 Years Age Group in Single Dose PhaseNumber (%) of Subjects With Rescue Medication Use by Age and Dose Group in Multiple-Dose PhaseRescue Medication Used5 Participants
6 Years to ≤ 12 Years Age Group in Single Dose PhaseNumber (%) of Subjects With Rescue Medication Use by Age and Dose Group in Multiple-Dose PhaseNo Rescue Medication needed5 Participants
2 Years to < 6 Years Age Group in Single Dose PhaseNumber (%) of Subjects With Rescue Medication Use by Age and Dose Group in Multiple-Dose PhaseRescue Medication Used2 Participants
2 Years to < 6 Years Age Group in Single Dose PhaseNumber (%) of Subjects With Rescue Medication Use by Age and Dose Group in Multiple-Dose PhaseNo Rescue Medication needed4 Participants
Primary

Pain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose Phase

Faces Pain Scale-Revised (FPS-R) was used for the 6 to ≤ 12 years age group, (0 = no pain and 10 = very much pain). Face, Legs, Activity, Cry, and Consolability (FLACC) behavior measurement was used for the 2 years to \< 6 years and 0 years to \< 2 years age groups, (0 = no pain and 10 = very much pain)

Time frame: Baseline, 0.5, 1, 1.5, 2, hours post dose, and immediately prior to all remaining doses administered through 48 hours after administration of the initial dose; and at time of rescue

Population: Effectiveness Population. Based on the recommendation of the Independent Data Monitoring Committee (IDMC), there was only 1 dose group of 0.2 mg/kg administered during the Multiple-dose Phase. Thus, this outcome measure was only assessed in this dose group.

ArmMeasureGroupValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, Baseline (Prior to Treatment)3.1 score on a scaleStandard Deviation 2.67
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 3, 0 Hour5.6 score on a scaleStandard Deviation 2.61
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 4, 0 Hour4.0 score on a scaleStandard Deviation 3.58
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 5, 0 Hour2.5 score on a scaleStandard Deviation 1
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 6, 0 Hour2.5 score on a scaleStandard Deviation 1
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 7, 0 Hour3.0 score on a scaleStandard Deviation 2
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 8, 0 Hour4.7 score on a scaleStandard Deviation 2.31
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 9, 0 Hour1.3 score on a scaleStandard Deviation 1.15
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 10, 0 Hour2.0 score on a scaleStandard Deviation 0
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 11, 0 Hour2.0 score on a scaleStandard Deviation 0
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 12, 0 Hour5.0 score on a scaleStandard Deviation 4.24
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseEnd of Study/Early Termination4.0 score on a scaleStandard Deviation 1.63
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, 30 Minutes Post Dose2.7 score on a scaleStandard Deviation 1.73
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, 1 Hour Post Dose2.0 score on a scaleStandard Deviation 2.83
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, 1.5 Hours Post Dose2.3 score on a scaleStandard Deviation 1.67
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, 2 Hours Post Dose2.8 score on a scaleStandard Deviation 2.38
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 2, 0 Hour4.0 score on a scaleStandard Deviation 3.27
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, Baseline (Prior to Treatment)3.5 score on a scaleStandard Deviation 3.27
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 5, 0 Hour5.0 score on a scaleStandard Deviation 0
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, 30 Minutes Post Dose1.3 score on a scaleStandard Deviation 1.97
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 3, 0 Hour3.7 score on a scaleStandard Deviation 3.21
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, 1 Hour Post Dose1.8 score on a scaleStandard Deviation 2.05
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseEnd of Study/Early Termination1.3 score on a scaleStandard Deviation 2.5
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, 1.5 Hours Post Dose0.0 score on a scaleStandard Deviation 0
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 4, 0 Hour4.5 score on a scaleStandard Deviation 0.71
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 1, 2 Hours Post Dose0.0 score on a scaleStandard Deviation 0
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 6, 0 Hour6.0 score on a scale
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Multiple Dose PhaseDose 2, 0 Hour5.0 score on a scaleStandard Deviation 2.65
Primary

Pain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase

Faces Pain Scale-Revised (FPS-R) was used for the 6 to ≤ 12 years age group, (0 = no pain and 10 = very much pain). Face, Legs, Activity, Cry, and Consolability (FLACC) behavior measurement was used for the 2 years to \< 6 years and 0 years to \< 2 years age groups, (0 = no pain and 10 = very much pain).

Time frame: Baseline, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post dose; and at the time of rescue

Population: Effectiveness Population. The analyses performed for this study report did not differentiate the pain intensity and pain intensity difference by age/dose combination.~The analyses were conducted by age group alone and results are presented accordingly.

ArmMeasureGroupValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose PhaseBaseline (Prior to Treatment)4.5 score on a scaleStandard Deviation 3.12
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase15 Minutes Post Dose3.5 score on a scaleStandard Deviation 3.64
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase30 Minutes Post Dose2.7 score on a scaleStandard Deviation 3.29
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase1 Hour Post Dose1.8 score on a scaleStandard Deviation 1.93
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase1.5 Hours Post Dose2.0 score on a scaleStandard Deviation 2.56
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase2 Hours Post Dose3.1 score on a scaleStandard Deviation 3.37
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase3 Hours Post Dose0.0 score on a scaleStandard Deviation 0
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase4 Hours Post Dose1.8 score on a scaleStandard Deviation 2.17
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase6 Hours Post Dose2.3 score on a scaleStandard Deviation 1.8
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase8 Hours Post Dose3.3 score on a scaleStandard Deviation 5.77
6 Years to ≤ 12 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase12 Hours Post Dose1.3 score on a scaleStandard Deviation 2.31
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase8 Hours Post Dose0.8 score on a scaleStandard Deviation 1.39
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose PhaseBaseline (Prior to Treatment)3.4 score on a scaleStandard Deviation 3.55
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase3 Hours Post Dose2.0 score on a scaleStandard Deviation 2.65
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase6 Hours Post Dose0.7 score on a scaleStandard Deviation 1.41
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase15 Minutes Post Dose1.2 score on a scaleStandard Deviation 2.5
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase2 Hours Post Dose0.4 score on a scaleStandard Deviation 0.81
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase12 Hours Post Dose0.0 score on a scaleStandard Deviation 0
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase30 Minutes Post Dose1.2 score on a scaleStandard Deviation 2.28
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase4 Hours Post Dose1.5 score on a scaleStandard Deviation 2.34
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase24 Hours Post Dose0.0 score on a scaleStandard Deviation 0
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase1 Hour Post Dose0.2 score on a scaleStandard Deviation 0.56
2 Years to < 6 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase1.5 Hours Post Dose0.2 score on a scaleStandard Deviation 0.6
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase4 Hours Post Dose1.3 score on a scaleStandard Deviation 1.51
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase8 Hours Post Dose0.0 score on a scaleStandard Deviation 0
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase2 Hours Post Dose0.4 score on a scaleStandard Deviation 0.79
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase24 Hours Post Dose0.0 score on a scaleStandard Deviation 0
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase3 Hours Post Dose0.4 score on a scaleStandard Deviation 1.13
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase1 Hour Post Dose0.1 score on a scaleStandard Deviation 0.38
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase12 Hours Post Dose0.0 score on a scaleStandard Deviation 0
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose PhaseBaseline (Prior to Treatment)2.4 score on a scaleStandard Deviation 1.9
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase15 Minutes Post Dose1.3 score on a scaleStandard Deviation 2.63
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase6 Hours Post Dose0.8 score on a scaleStandard Deviation 1.5
0 Years to < 2 Years Age Group in Single Dose PhasePain Intensity Score of Oxymorphone IR Oral Liquid in Pediatric Subjects by Age Group and Time Points in Single Dose Phase30 Minutes Post Dose0.4 score on a scaleStandard Deviation 0.79
Secondary

6 Beta-Hydroxyoxymorphone AUC0-24 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

AUC0-24: Area under the concentration versus time curve from time 0 to 24 hours calculated by linear trapezoidal rule

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-24 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 72.11 h*ng/mLStandard Deviation 0.748
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-24 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.78 h*ng/mLStandard Deviation 1.72
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-24 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 77.38 h*ng/mL
Secondary

6 Beta-Hydroxyoxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

AUC0-24: Area under the concentration versus time curve from time 0 to 24 hours calculated by linear trapezoidal rule

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.09 h*ng/mL
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.09 h*ng/mL
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.08 h*ng/mLStandard Deviation 0.484
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.45 h*ng/mLStandard Deviation 0.588
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single Dose6 Beta-Hydroxyoxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.08 h*ng/mLStandard Deviation 1.32
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.61 h*ng/mLStandard Deviation 0.226
Secondary

6 Beta-Hydroxyoxymorphone AUC0-inf Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

AUC0-inf: Area under the concentration versus time curve from time 0 to infinity, calculated as AUC0-t + Clast/λn

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-inf Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 72.15 h*ng/mLStandard Deviation 0.769
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-inf Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.79 h*ng/mLStandard Deviation 1.73
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-inf Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 77.66 h*ng/mL
Secondary

6 Beta-Hydroxyoxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

AUC0-inf: Area under the concentration versus time curve from time 0 to infinity, calculated as AUC0-t + Clast/λn

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.83 h*ng/mL
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.11 h*ng/mL
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.535 h*ng/mL
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.76 h*ng/mLStandard Deviation 0.762
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single Dose6 Beta-Hydroxyoxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase7.58 h*ng/mLStandard Deviation 5.12
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.76 h*ng/mLStandard Deviation 0.399
Secondary

6 Beta-Hydroxyoxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

AUC0-t: Area under the concentration versus time curve from time 0 to the last measured concentration (Clast) calculated by linear trapezoidal rule

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of AUC0-t was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.35 h*ng/mLStandard Deviation 1.27
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.61 h*ng/mLStandard Deviation 1.19
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 72.25 h*ng/mLStandard Deviation 0.547
Secondary

6 Beta-Hydroxyoxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

AUC0-t: Area under the concentration versus time curve from time 0 to the last measured concentration (Clast) calculated by linear trapezoidal rule

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.459 h*ng/mLStandard Deviation 0.396
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.467 h*ng/mLStandard Deviation 0.473
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.22 h*ng/mLStandard Deviation 0.761
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.27 h*ng/mLStandard Deviation 0.637
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single Dose6 Beta-Hydroxyoxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.64 h*ng/mLStandard Deviation 2.52
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.26 h*ng/mLStandard Deviation 1.07
Secondary

6 Beta-Hydroxyoxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

Clast: Minimum plasma concentration; the last concentration observed during a dosage interval

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of Clast was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 70.201 ng/mLStandard Deviation 0.118
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 70.225 ng/mLStandard Deviation 0.139
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.25 ng/mLStandard Deviation 0.585
Secondary

6 Beta-Hydroxyoxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

Clast: Minimum plasma concentration; the last concentration observed during a dosage interval

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.0453 ng/mLStandard Deviation 0.0272
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.0418 ng/mLStandard Deviation 0.0152
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.0568 ng/mLStandard Deviation 0.0292
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.0332 ng/mLStandard Deviation 0.0183
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single Dose6 Beta-Hydroxyoxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.204 ng/mLStandard Deviation 0.188
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.0994 ng/mLStandard Deviation 0.144
Secondary

6 Beta-Hydroxyoxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

Cmax: Maximum plasma concentration; the highest concentration observed during a dosage interval

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of Cmax was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 70.547 ng/mLStandard Deviation 0.472
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 70.829 ng/mLStandard Deviation 0.541
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.41 ng/mLStandard Deviation 0.473
Secondary

6 Beta-Hydroxyoxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

Cmax: Maximum plasma concentration; the highest concentration observed during a dosage interval

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.104 ng/mLStandard Deviation 0.0555
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.1 ng/mLStandard Deviation 0.073
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.384 ng/mLStandard Deviation 0.177
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.437 ng/mLStandard Deviation 0.419
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single Dose6 Beta-Hydroxyoxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.603 ng/mLStandard Deviation 0.513
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.587 ng/mLStandard Deviation 0.182
Secondary

6 Beta-Hydroxyoxymorphone t1/2 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

t1/2: Terminal half-life, calculated as λn/(ln 2)

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone t1/2 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 73.61 hStandard Deviation 1.67
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone t1/2 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.42 hStandard Deviation 0.73
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone t1/2 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 74.9 h
Secondary

6 Beta-Hydroxyoxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

t1/2: Terminal half-life, calculated as λn/(ln 2)

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase20.5 h
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase4.48 h
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.31 h
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase8.67 hStandard Deviation 8.06
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single Dose6 Beta-Hydroxyoxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase18.7 hStandard Deviation 22.5
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase5.18 hStandard Deviation 2.55
Secondary

6 Beta-Hydroxyoxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

Tlast: The time at which Clast was observed

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of Tlast was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 73.97 hStandard Deviation 1.05
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 74.47 hStandard Deviation 1.68
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 72.09 hStandard Deviation 0.077
Secondary

6 Beta-Hydroxyoxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

Tlast: The time at which Clast was observed

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase9.66 hStandard Deviation 8.25
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase8.86 hStandard Deviation 7.82
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase14.4 hStandard Deviation 7.86
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase16.1 hStandard Deviation 9.05
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single Dose6 Beta-Hydroxyoxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase12.6 hStandard Deviation 9.85
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase18.4 hStandard Deviation 8.97
Secondary

6 Beta-Hydroxyoxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

Tmax: The time at which Cmax was observed

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of Tmax was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.67 hStandard Deviation 1.01
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.37 hStandard Deviation 1.5
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.36 hStandard Deviation 0.85
Secondary

6 Beta-Hydroxyoxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

Tmax: The time at which Cmax was observed

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.86 hStandard Deviation 1.17
2 Years to < 6 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.91 hStandard Deviation 1.11
0 Years to < 2 Years Age Group in Single Dose Phase6 Beta-Hydroxyoxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.38 hStandard Deviation 1.3
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.86 hStandard Deviation 1.69
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single Dose6 Beta-Hydroxyoxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.08 hStandard Deviation 3.42
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single Dose6 Beta-Hydroxyoxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.93 hStandard Deviation 1.71
Secondary

Dose-Normalized 6 Beta-Hydroxyoxymorphone CL/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

CL/F: Apparent oral clearance, calculated as Dose/AUC0-inf

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (subjects with sufficient plasma concentration data to calculate PK parameter values). Since the overall exposure (AUC 0 to t) increased in near dose proportional manner, PK parameter values were dose normalized across all dose levels for each age group to determine the CL/F.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDose-Normalized 6 Beta-Hydroxyoxymorphone CL/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase70.7 L/h/kgStandard Deviation 78.8
2 Years to < 6 Years Age Group in Single Dose PhaseDose-Normalized 6 Beta-Hydroxyoxymorphone CL/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase65 L/h/kgStandard Deviation 23.2
Secondary

Dose-Normalized 6 Beta-Hydroxyoxymorphone V/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

V/F: Apparent volume of distribution, calculated as Dose/(AUC0-inf \* λn)

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (subjects with sufficient plasma concentration data to calculate PK parameter values). Since the overall exposure (AUC 0 to t) increased in near dose proportional manner, PK parameter values were dose normalized across all dose levels for each age group to determine the V/F.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDose-Normalized 6 Beta-Hydroxyoxymorphone V/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase631 L/kgStandard Deviation 308
2 Years to < 6 Years Age Group in Single Dose PhaseDose-Normalized 6 Beta-Hydroxyoxymorphone V/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase575 L/kgStandard Deviation 487
Secondary

Dose-Normalized Oxymorphone CL/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

CL/F: Apparent oral clearance, calculated as Dose/AUC0-inf

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (subjects with sufficient plasma concentration data to calculate PK parameter values). Since the overall exposure (AUC 0 to t) increased in near dose proportional manner, PK parameter values were dose normalized across all dose levels for each age group to determine the CL/F.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDose-Normalized Oxymorphone CL/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase31.2 L/h/kgStandard Deviation 13.6
2 Years to < 6 Years Age Group in Single Dose PhaseDose-Normalized Oxymorphone CL/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase26.4 L/h/kgStandard Deviation 18.8
Secondary

Dose-Normalized Oxymorphone V/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

V/F: Apparent volume of distribution, calculated as Dose/(AUC0-inf \* λn)

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (subjects with sufficient plasma concentration data to calculate PK parameter values). Since the overall exposure (AUC 0 to t) increased in near dose proportional manner, PK parameter values were dose normalized across all dose levels for each age group to determine the V/F.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseDose-Normalized Oxymorphone V/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase205 L/kgStandard Deviation 145
2 Years to < 6 Years Age Group in Single Dose PhaseDose-Normalized Oxymorphone V/F Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase154 L/kgStandard Deviation 121
Secondary

Oxymorphone AUC0-24 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

AUC0-24: Area under the concentration versus time curve from time 0 to 24 hours calculated by linear trapezoidal rule

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone AUC0-24 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 74.01 h*ng/mLStandard Deviation 1.42
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone AUC0-24 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 74.53 h*ng/mLStandard Deviation 2.21
Secondary

Oxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

AUC0-24: Area under the concentration versus time curve from time 0 to 24 hours calculated by linear trapezoidal rule

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.75 h*ng/mLStandard Deviation 2.32
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.65 h*ng/mLStandard Deviation 1.4
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.01 h*ng/mLStandard Deviation 0.905
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.69 h*ng/mLStandard Deviation 2.44
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single DoseOxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase6.11 h*ng/mLStandard Deviation 2.83
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone AUC0-24 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase14 h*ng/mLStandard Deviation 4.72
Secondary

Oxymorphone AUC0-inf Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

AUC0-inf: Area under the concentration versus time curve from time 0 to infinity, calculated as AUC0-t + Clast/λn

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone AUC0-inf Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 74.01 h*ng/mLStandard Deviation 1.43
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone AUC0-inf Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 74.53 h*ng/mLStandard Deviation 2.21
Secondary

Oxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

AUC0-inf: Area under the concentration versus time curve from time 0 to infinity, calculated as AUC0-t + Clast/λn

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseNA h*ng/mLStandard Deviation 0.0516
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.22 h*ng/mLStandard Deviation 1.56
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.01 h*ng/mLStandard Deviation 0.946
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.69 h*ng/mLStandard Deviation 3.12
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single DoseOxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase6.92 h*ng/mLStandard Deviation 4.02
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone AUC0-inf Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase14.3 h*ng/mLStandard Deviation 5.01
Secondary

Oxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

AUC0-t: Area under the concentration versus time curve from time 0 to the last measured concentration (Clast) calculated by linear trapezoidal rule

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of AUC0-t was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 73.49 h*ng/mLStandard Deviation 3.22
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 73.88 h*ng/mLStandard Deviation 1.45
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone AUC0-t Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 74.24 h*ng/mLStandard Deviation 0.9
Secondary

Oxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

AUC0-t: Area under the concentration versus time curve from time 0 to the last measured concentration (Clast) calculated by linear trapezoidal rule

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.56 h*ng/mLStandard Deviation 2
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.69 h*ng/mLStandard Deviation 0.943
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.01 h*ng/mLStandard Deviation 0.766
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.99 h*ng/mLStandard Deviation 2.09
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single DoseOxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase5.32 h*ng/mLStandard Deviation 4.53
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone AUC0-t Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase9.37 h*ng/mLStandard Deviation 5.81
Secondary

Oxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

Clast: Minimum plasma concentration; the last concentration observed during a dosage interval

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of Clast was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 70.452 ng/mLStandard Deviation 0.286
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 70.508 ng/mLStandard Deviation 0.32
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone Clast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 72.3 ng/mLStandard Deviation 0.745
Secondary

Oxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

Clast: Minimum plasma concentration; the last concentration observed during a dosage interval

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.0759 ng/mLStandard Deviation 0.072
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.0618 ng/mLStandard Deviation 0.0389
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.11 ng/mLStandard Deviation 0.0847
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.0671 ng/mLStandard Deviation 0.0376
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single DoseOxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.269 ng/mLStandard Deviation 0.182
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone Clast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.645 ng/mLStandard Deviation 1.3
Secondary

Oxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

Cmax: Maximum plasma concentration; the highest concentration observed during a dosage interval

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of Cmax was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.46 ng/mLStandard Deviation 1.16
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 72.58 ng/mLStandard Deviation 1.24
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone Cmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 72.66 ng/mLStandard Deviation 0.805
Secondary

Oxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

Cmax: Maximum plasma concentration; the highest concentration observed during a dosage interval

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.415 ng/mLStandard Deviation 0.211
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase0.33 ng/mLStandard Deviation 0.217
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.14 ng/mLStandard Deviation 0.847
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.76 ng/mLStandard Deviation 1.62
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single DoseOxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.33 ng/mLStandard Deviation 0.772
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone Cmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase3.16 ng/mLStandard Deviation 1.65
Secondary

Oxymorphone t1/2 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

t1/2: Terminal half-life, calculated as λn/(ln 2)

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone t1/2 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 72.18 hStandard Deviation 0.459
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone t1/2 Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.17 hStandard Deviation 0.632
Secondary

Oxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

t1/2: Terminal half-life, calculated as λn/(ln 2)

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose PhaseNA hStandard Deviation 0.232
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase5.01 hStandard Deviation 1.4
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase7.5 hStandard Deviation 7.33
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase4.38 hStandard Deviation 2.9
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single DoseOxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase5.13 hStandard Deviation 3.16
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone t1/2 Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase4.39 hStandard Deviation 1.16
Secondary

Oxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

Tlast: The time at which Clast was observed

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of Tlast was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 74 hStandard Deviation 0.971
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 74.47 hStandard Deviation 1.68
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone Tlast Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 72.09 hStandard Deviation 0.077
Secondary

Oxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

Tlast: The time at which Clast was observed

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase15.4 hStandard Deviation 7.01
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase13.2 hStandard Deviation 5.06
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase18 hStandard Deviation 6.55
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase16 hStandard Deviation 8.04
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single DoseOxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase12.6 hStandard Deviation 9.85
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone Tlast Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase18.4 hStandard Deviation 8.97
Secondary

Oxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 7

Tmax: The time at which Cmax was observed

Time frame: Serial blood samples were collected at: time 0 (Baseline), at 0.5, 1, 1.5, and 2 hours post-Dose 1, immediately prior to Doses 2, 3, 4, 5, 6, 7, and at 0.5, 1, 1.5, and 2 hours post-Dose 7

Population: Analysis was conducted in the PK Population with sufficient concentration data at required time points. During the Multiple-dose Phase, all subjects received 0.2 mg/kg oxymorphone HCl IR solution. Analysis of Tmax was conducted in the subjects remaining in the study, with sufficient concentration data at the required time points, as shown.

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.37 hStandard Deviation 0.599
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 70.967 hStandard Deviation 0.622
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone Tmax Following Multiple-Dose Administration of 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Multiple-Dose Phase From Dose 1 and Dose 71.21 hStandard Deviation 1.1
Secondary

Oxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase

Tmax: The time at which Cmax was observed

Time frame: Serial blood samples were collected at time 0 (Baseline), at 15 and 30 minutes, and at 1, 1.5, 2, 4, 6, 8, 12, and 24 hours post-dose

Population: PK Population (only including subjects with sufficient evaluable time points for this outcome measure).

ArmMeasureValue (MEAN)Dispersion
6 Years to ≤ 12 Years Age Group in Single Dose PhaseOxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.7 hStandard Deviation 1.66
2 Years to < 6 Years Age Group in Single Dose PhaseOxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.64 hStandard Deviation 1.03
0 Years to < 2 Years Age Group in Single Dose PhaseOxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.38 hStandard Deviation 1.3
0.1 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.45 hStandard Deviation 1.39
0.2 mg/kg - Children Aged 6 Years to ≤12 Years in Single DoseOxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase2.49 hStandard Deviation 3.17
0.2 mg/kg - Children Aged 2 Years to <6 Years in Single DoseOxymorphone Tmax Following Single-Dose Administration of 0.05, 0.1, and 0.2 mg/kg Oxymorphone HCl Immediate-Release Oral Liquid in Children Aged 2 Years to ≤12 Years in the Single-Dose Phase1.59 hStandard Deviation 1.38

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026