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A Clinical Study to Measure the Effect of OP-101 After Being Administered Subcutaneous in Healthy Volunteers

A Phase 1 Open-Label Single-Ascending Dose Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of OP-101 (Dendrimer N-acetyl-cysteine) After Subcutaneous Administration in Healthy Volunteers

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04321980
Enrollment
8
Registered
2020-03-26
Start date
2020-03-19
Completion date
2020-05-22
Last updated
2021-06-14

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

Conditions

Healthy

Brief summary

A clinical study to measure the Safety, Tolerability, and Pharmacokinetics of OP-101 After Subcutaneous Administration in Healthy Volunteers

Interventions

DRUGOP-101

Subcutaneous injection of OP-101 in healthy volunteers

Sponsors

Orpheris, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Is a healthy man or woman age 18 to 65 years, inclusive, at the Screening Visit; * Has the ability to understand and sign the written Informed Consent Form (ICF) and local medical privacy authorization forms, which must be obtained prior to any study related procedures being completed; * Body mass index (BMI) between 18 and 32 kg/m2, inclusive; * Is in general good health, based upon the results of a medical history assessment, physical examination, vital signs, and laboratory profile, as judged by the Investigator; * Female subjects of non-childbearing potential must be either surgically sterile (hysterectomy, bilateral tubal ligation, salpingectomy, and/or bilateral oophorectomy at least 26 weeks before the Screening Visit) or postmenopausal, defined as spontaneous amenorrhea for at least 2 years, with follicle-stimulating hormone (FSH) in the postmenopausal range at screening, based on the central laboratory's ranges; * Female subjects of childbearing potential (ie, ovulating, premenopausal, and not surgically sterile) and all male subjects must use a medically accepted contraceptive regimen (including hormonal contraceptives) during their participation in the study and for 30 days after the last administration of study drug. Medically accepted contraceptive methods are defined as those with 90% or greater efficacy; * Acceptable methods of contraception for male subjects enrolled in the study include the following: • Condoms or surgical sterilization of subject at least 26 weeks before the Screening Visit (vasectomy); * Acceptable methods of contraception for female subjects enrolled in the study include the following: * Surgical sterilization of subject at least 26 weeks before the Screening Visit (includes hysterectomy or bilateral tubal ligation, oophorectomy, or salpingectomy); * Intrauterine device for at least 12 weeks before the Screening Visit; * Hormonal contraception (oral, implant, injection, ring, or patch) for at least 12 weeks before the Screening Visit; or * Diaphragm; * If male, subjects must agree to abstain from sperm donation through 90 days after administration of the last dose of study drug; * Female subjects may not be pregnant, lactating, or breastfeeding; * Female subjects of childbearing potential must have negative result for pregnancy test at screening and Check-in; * Subjects must have a negative test result for hepatitis B surface antigen (HBsAg), hepatitis C virus antibody (HCVab), and human immunodeficiency virus (HIV) antibody at screening; * Subjects must have an estimated glomerular filtration rate (eGFR) of ≥90 mL/min/1.73m2 at screening; * Subjects must have a negative urine test for drugs of abuse (opiates, benzodiazepines, amphetamines, cannabinoids, cocaine, barbiturates, and phencyclidine), cotinine, and breath alcohol test at screening and Check-in; and * Subjects must be willing and able to abide by all study requirements and restrictions.

Exclusion criteria

* Evidence of clinically significant hematologic, renal, endocrine, pulmonary, cardiac, gastrointestinal (GI), hepatic, psychiatric, neurologic, immunologic, allergic disease (including multiple or clinically significant drug allergies), or any other condition that, in the opinion of the Investigator, might significantly interfere with the absorption, distribution, metabolism, or excretion of study drug, or place the subject at an unacceptable risk as a participant in this study; * History of malignancy (other than successfully treated basal cell or squamous cell skin cancer); * History or presence of an abnormal ECG that, in the opinion of the Investigator, is clinically significant; * Laboratory results (serum chemistry, hematology, coagulation, and urinalysis) outside the normal range at screening and Check-in and considered clinically significant in the opinion of the Investigator. Any elevation of aspartate transaminase (AST) and alanine transaminase (ALT) above the upper limit of normal at screening and/or Check-in is exclusionary. One retest of an exclusionary laboratory result is allowed at the discretion of the Investigator; * Has had an acute illness considered clinically significant by the Investigator within 30 days prior to screening; * History of alcoholism or drug abuse within 2 years prior to screening; * Has used any product containing nicotine within 90 days prior to screening or intends to use any product containing nicotine during the course of the study; * Has had any immunizations (live vaccines) in the 4 weeks prior to screening; * Has used medications that affect GI motility or gastric emptying; such as metoclopramide, proton pump inhibitors, and H2 blockers; within 30 days prior to Day 1; * Has used any prescription or over-the-counter medication (with exception of acetaminophen), vitamins/herbal supplements (with the exception of hormonal contraceptives) within 14 days prior to Day 1; * Has used any other study drug within 30 days or 5 half-lives of the drug (whichever is longer) prior to Day 1; * Has lost or donated \>450 mL of whole blood or blood products within 30 days prior to screening; * Investigator has reason to believe that the subject may be unable to fulfill the protocol visit schedule or requirements; * Has any finding that, in the view of the Investigator or Medical Monitor, would compromise the subject's safety requirements; or * Is employed by the Sponsor, the Contract Research Organization (CRO), or the study site (permanent, temporary contract worker, or designee responsible for the conduct of the study), or is a family member (spouse, parent, sibling, or child) of the Sponsor, CRO, or study site employee.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse EventsUp to Day 15An adverse event (AE) was defined as any untoward medical occurrence in a clinical investigation participant administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment. A TEAE (treatment-emergent adverse event) was defined as an AE that emerges, having been absent prior to the study, or an AE that worsens in severity after the first dose of the study drug. Serious AE (SAE) was an AE resulting in any of the following outcomes: death; life-threatening adverse event, required hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect, or a medically important event.

Secondary

MeasureTime frameDescription
Pharmacokinetics: Maximum Observed Plasma Concentration (Cmax) of OP-101Pre-dose, 0.5 hours and 1, 2, 4, 6, 8, 10, 12, 16, 24, 30-36, 48 hours post-doseCmax: maximum observed plasma concentration.
Pharmacokinetics: Time to Reach Maximum Plasma Concentration (Tmax) of OP-101Pre-dose, 0.5 hours and at 1, 2, 4, 6, 8, 10, 12, 16, 24, 30-36, 48 hours post-doseTmax: time to reach maximum observed plasma concentration.
Pharmacokinetics: Area Under the Concentration Versus Time Curve From Time Zero to the Last Quantifiable Concentration (AUC0-last) of OP-101Pre-dose, 0.5 hours and 1, 2, 4, 6, 8, 10, 12, 16, 24, 30-36, 48 hours post-doseAUC0-last: Area under the concentration versus time curve from time zero to the last quantifiable concentration (Clast).
Pharmacokinetics: Area Under the Concentration Versus Time Curve From Time Zero to 48 Hour Post Dose Time Point (AUC0-48) of OP-101Pre-dose, 0.5 hours and 1, 2, 4, 6, 8, 10, 12, 16, 24, 30-36, 48 hours post-doseArea under the concentration versus time curve from time zero to 48 hour post dose time point.
Pharmacokinetics: Renal Clearance (CLR) for OP-101Pre-dose, 0 to 4, 4 to 8, 8 to 12, 12 to 18, 18 to 24, and 24 to 48 hours post doseCLR was defined as renal clearance of the drug from plasma utilizing the AUC and cumulative amount of unchanged study drug excreted into the urine (Ae) to the same duration (as Amount recovered/AUC at 0-48 hours).

Countries

Australia

Participant flow

Pre-assignment details

A total of 8 participants were enrolled and treated in the study.

Participants by arm

ArmCount
Cohort 1: 4 mg/kg
Participants in Cohort 1 received a single dose of 4 milligram per kg (mg/kg) OP-101 as subcutaneous (SC) injection on Day 1.
4
Cohort 2: 8 mg/kg
Participants in Cohort 2 received a single dose of 8 mg/kg OP-101 as SC injection on Day 1.
4
Total8

Baseline characteristics

CharacteristicCohort 1: 4 mg/kgCohort 2: 8 mg/kgTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
4 Participants4 Participants8 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants0 Participants1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
3 Participants4 Participants7 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
Asian
0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Filipino
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
White
3 Participants3 Participants6 Participants
Sex: Female, Male
Female
3 Participants4 Participants7 Participants
Sex: Female, Male
Male
1 Participants0 Participants1 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 40 / 4
other
Total, other adverse events
2 / 43 / 4
serious
Total, serious adverse events
0 / 40 / 4

Outcome results

Primary

Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events

An adverse event (AE) was defined as any untoward medical occurrence in a clinical investigation participant administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment. A TEAE (treatment-emergent adverse event) was defined as an AE that emerges, having been absent prior to the study, or an AE that worsens in severity after the first dose of the study drug. Serious AE (SAE) was an AE resulting in any of the following outcomes: death; life-threatening adverse event, required hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect, or a medically important event.

Time frame: Up to Day 15

Population: Analysis was performed on safety population.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Cohort 1: 4 mg/kgNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse EventsAny TEAE2 Participants
Cohort 1: 4 mg/kgNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse EventsAny SAE0 Participants
Cohort 2: 8 mg/kgNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse EventsAny TEAE3 Participants
Cohort 2: 8 mg/kgNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse EventsAny SAE0 Participants
Secondary

Pharmacokinetics: Area Under the Concentration Versus Time Curve From Time Zero to 48 Hour Post Dose Time Point (AUC0-48) of OP-101

Area under the concentration versus time curve from time zero to 48 hour post dose time point.

Time frame: Pre-dose, 0.5 hours and 1, 2, 4, 6, 8, 10, 12, 16, 24, 30-36, 48 hours post-dose

Population: Analysis was performed on PK parameter population.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: 4 mg/kgPharmacokinetics: Area Under the Concentration Versus Time Curve From Time Zero to 48 Hour Post Dose Time Point (AUC0-48) of OP-101121.705 hr*mcg/mLStandard Deviation 16.9069
Cohort 2: 8 mg/kgPharmacokinetics: Area Under the Concentration Versus Time Curve From Time Zero to 48 Hour Post Dose Time Point (AUC0-48) of OP-101222.173 hr*mcg/mLStandard Deviation 12.469
Secondary

Pharmacokinetics: Area Under the Concentration Versus Time Curve From Time Zero to the Last Quantifiable Concentration (AUC0-last) of OP-101

AUC0-last: Area under the concentration versus time curve from time zero to the last quantifiable concentration (Clast).

Time frame: Pre-dose, 0.5 hours and 1, 2, 4, 6, 8, 10, 12, 16, 24, 30-36, 48 hours post-dose

Population: Analysis was performed on PK parameter population.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: 4 mg/kgPharmacokinetics: Area Under the Concentration Versus Time Curve From Time Zero to the Last Quantifiable Concentration (AUC0-last) of OP-10180.940 hr*mcg/mLStandard Deviation 51.819
Cohort 2: 8 mg/kgPharmacokinetics: Area Under the Concentration Versus Time Curve From Time Zero to the Last Quantifiable Concentration (AUC0-last) of OP-101212.325 hr*mcg/mLStandard Deviation 30.6459
Secondary

Pharmacokinetics: Maximum Observed Plasma Concentration (Cmax) of OP-101

Cmax: maximum observed plasma concentration.

Time frame: Pre-dose, 0.5 hours and 1, 2, 4, 6, 8, 10, 12, 16, 24, 30-36, 48 hours post-dose

Population: Analysis was performed on pharmacokinetic (PK) parameter population which was defined as all participants who received a dose of study drug and had at least 1 PK parameter.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: 4 mg/kgPharmacokinetics: Maximum Observed Plasma Concentration (Cmax) of OP-1013.473 microgram per milliliter(mcg/mL)Standard Deviation 0.8183
Cohort 2: 8 mg/kgPharmacokinetics: Maximum Observed Plasma Concentration (Cmax) of OP-1016.640 microgram per milliliter(mcg/mL)Standard Deviation 0.6073
Secondary

Pharmacokinetics: Renal Clearance (CLR) for OP-101

CLR was defined as renal clearance of the drug from plasma utilizing the AUC and cumulative amount of unchanged study drug excreted into the urine (Ae) to the same duration (as Amount recovered/AUC at 0-48 hours).

Time frame: Pre-dose, 0 to 4, 4 to 8, 8 to 12, 12 to 18, 18 to 24, and 24 to 48 hours post dose

Population: Analysis was performed on PK parameter population. Here, 'overall number of participants analyzed' = participants evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: 4 mg/kgPharmacokinetics: Renal Clearance (CLR) for OP-1010.175 liter per hour (L/hr)Standard Deviation 0.0354
Cohort 2: 8 mg/kgPharmacokinetics: Renal Clearance (CLR) for OP-1010.150 liter per hour (L/hr)Standard Deviation 0.0606
Secondary

Pharmacokinetics: Time to Reach Maximum Plasma Concentration (Tmax) of OP-101

Tmax: time to reach maximum observed plasma concentration.

Time frame: Pre-dose, 0.5 hours and at 1, 2, 4, 6, 8, 10, 12, 16, 24, 30-36, 48 hours post-dose

Population: Analysis was performed on PK parameter population.

ArmMeasureValue (MEDIAN)
Cohort 1: 4 mg/kgPharmacokinetics: Time to Reach Maximum Plasma Concentration (Tmax) of OP-10114.015 hours
Cohort 2: 8 mg/kgPharmacokinetics: Time to Reach Maximum Plasma Concentration (Tmax) of OP-10116.000 hours

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