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Open Label Study to Assess the Absolute Bioavailability of Tasimelteon (HETLIOZ™)

A Single Dose, Open-Label, Randomized Two-Period Crossover Study in Healthy Young Subjects to Assess the Absolute Bioavailability of Tasimelteon (HETLIOZ™)

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02130999
Enrollment
14
Registered
2014-05-06
Start date
2014-05-31
Completion date
2014-05-31
Last updated
2016-08-22

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

Conditions

Non-24-Hour-Sleep-Wake Disorder

Keywords

Non-24, absolute bioavailability, tasimelteon, Hetlioz™

Brief summary

Hetlioz™ (tasimelteon) is used in the treatment of Non-24-Hour-Sleep-Wake Disorder (Non-24). Non-24 is very common in people who are totally blind because light can not reset their body clock. This causes the internal sleep-wake cycle to be out of sync with the 24-hour day-night. Non-24 is a serious, chronic circadian rhythm disorder in the blind that causes nighttime sleep problems and a wide range of daytime difficulties, including an overwhelming urge to nap. Tasimelteon will be given in two ways; orally (by mouth) as a 20 mg capsule and intravenously (I.V.) by infusion through a catheter (not an injection) into a vein. The oral administration is approved by the FDA. The I.V. administration is considered investigational as it has not been approved by the FDA. This will be the first time tasimelteon will be given to humans by intravenous (I.V.) injection. The purposes of this research study are to: * assess how quickly a single 20 mg oral dose of tasimelteon is absorbed into the body; * evaluate the single-dose pharmacokinetics of tasimelteon after a single 20 mg oral dose and after a single 2 mg I.V. dose; * evaluate the single-dose pharmacokinetics of tasimelteon metabolites after a single 20 mg oral dose and after a single 2 mg I.V. dose; * evaluate the safety and tolerability of a single 20 mg oral dose of tasimelteon; and * evaluate the safety and tolerability of a single 2 mg I.V. dose of tasimelteon. Pharmacokinetics (PK) is the study of how a drug is absorbed, distributed, metabolized, and eventually eliminated by the body. Pharmacokinetics is what the body does to the drug. Blood samples will be taken throughout the study for PK analysis.

Interventions

DRUGtasimelteon 20 mg capsule
DRUGtasimelteon 2 mg I.V.

Sponsors

Vanda Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

1. Men and women ages 18 - 55 years, inclusive; 2. Non-smokers \[abstinence from smoking for at least 6 months before the screening visit\] and test negative for cotinine at screening and baseline; 3. Subjects with Body Mass Index (BMI) of ≥18 and ≤25 kg/m2 (BMI = weight (kg)/ \[height (m)\]2); 4. Males, non-fecund females (i.e., surgically sterilized, if procedure was done 6 months before screening or subject is postmenopausal, without menses for 6 months before screening), or females of child-bearing potential using an acceptable method of birth control for a period of 35 days before the first dosing, and females must have a negative pregnancy test at the screening and baseline visits; Note 1: Acceptable methods of birth control include any one of the following: abstinence, vasectomized sexual partner, hormonal methods (i.e. pill, hormonal IUD, Depo-Provera, implants, patch, intravaginal device \[NuvaRing\]), intrauterine device (IUD \[copper banded coils\]), diaphragm, cervical cap, or condom with spermicidal jelly or foam 5. Vital signs (after 3 minutes resting in a semi-supine position) which are within the ranges shown below: 1. Body temperature between 35.0-37.5 °C; 2. Systolic blood pressure between 90-150 mmHg; 3. Diastolic blood pressure between 50-95 mmHg; 4. Pulse rate between 50-100 bpm. 6. Ability and acceptance to provide written informed consent; 7. Willing and able to comply with study requirements and restrictions; 8. Subjects must be in good health as determined by past medical history, physical examination, electrocardiogram, clinical laboratory tests and urinalysis;

Exclusion criteria

1. History of recent (within six months) drug or alcohol abuse as defined in DSM-V, Diagnostic Criteria for Drug and Alcohol Abuse or evidence of such abuse as indicated by the laboratory assays conducted during the Screening Visit or at Baseline; 2. Any major surgery within three months of the first Baseline visit or any minor surgery within one month; 3. History or current evidence of cardiovascular, hepatic, hematopoietic, renal, gastrointestinal or metabolic dysfunction or psychiatric disease judged by the Investigator to be clinically significant; 4. Subjects who are currently considered a suicide risk, any subject who has ever made a suicide attempt, or those who are currently demonstrating active (within the past 6 months) suicidal ideation as deemed by the Columbia Suicide Severity Rating Scale (C-SSRS); 5. Any condition requiring the regular use of medication except those listed in Section 8.2; 6. Exposure to any investigational drug, including placebo, within 30 days or 5 half-lives (whichever is longer) of baseline 7. Exposure (within 2 weeks of Day -1) to any over-the-counter medications including melatonin, dietary supplements and/or herbal remedies, except those listed on Section 8.2; 8. Treatment with any drug known to cause major organ system toxicity (e.g., chloramphenicol or tamoxifen) during the 60 days preceding the Screening visit; 9. History of intolerance and/or hypersensitivity to tasimelteon, and/or drugs similar to tasimelteon including melatonin; 10. Donation or loss of 400 mL or more of blood within one month prior to the Baseline Visit; 11. Significant illness within the two weeks prior to Baseline; 12. Pregnant or lactating females; 13. History of porphyria or liver disease and/or positive for one or more of the following serological results: 1. A positive hepatitis C antibody test (anti-HCV) 2. A positive hepatitis B surface antigen (HBsAg) 3. A positive HIV test result 14. Use of any food or beverage containing grapefruit or grapefruit juice, apple or orange juice, vegetables from the mustard green family (e.g. kale, broccoli, watercress, collard greens, kohlrabi, Brussels sprouts, mustard greens) and charbroiled meats for at least 2 weeks before the Baseline Visit until the end of the study; 15. Inability to be venipunctured and/or tolerate venous access; 16. Previous participation in a BMS-214778, VEC-162, or tasimelteon study; 17. Subjects who are unable to read or speak English; 18. Any other sound medical reason as determined by the clinical Investigator.

Design outcomes

Primary

MeasureTime frameDescription
Absolute Bioavailability After a Single Oral Dose of Hetlioz™(Tasimelteon) 20mgpre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-doseThe absolute bioavailability (F) of tasimelteon will be estimated from the dose-corrected AUC(inf) after oral and I.V. administration using an analysis of variance (ANOVA) model with treatment, period, sequence, and subject within sequence as the classification variables, using natural log-transformed data. The geometric mean ratio (GMR), oral-to-I.V., and its associated 90% confidence interval (CI) will be used as the estimate of F and its variability.

Secondary

MeasureTime frameDescription
Cmax of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-doseCmax of tasimelteon will be compared when given orally or administered as an I.V.
AUC (Inf) of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-doseAUC (inf) of Tasimelteon will be compared when given orally or administered as an I.V.
T1/2 of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours pos-doseT1/2 of tasimelteon will be compared when given orally or administered as an I.V.
Total Clearance of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-doseCL of tasimelteon will be compared when given orally or administered as an I.V.
AUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. Dosepre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-doseThe mean +/- SD for the AUC(inf) of tasimelteon's metabolites after a single 20 mg oral dose of tasimelteon and after a single 2 mg I.V. administration of tasimelteon
Metabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of Tasimelteonpre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-doseComparison of the metabolite-to-parent AUC(inf) ratios for the oral and IV routes.
Number of Participants With Adverse EventsFrom Baseline to End of Study; Day 5 (± 2 days).Number of participants with treatment-emergent adverse event per treatment arm and overall.
Cmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of Tasimelteonpre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-doseThe mean +/- SD for the Cmax of tasimelteon's metabolites after a single 20 mg oral dose of tasimelteon and after a single 2 mg I.V. administration of tasimelteon

Other

MeasureTime frameDescription
Number of Participants That Reported Suicidal Ideation, Suicidal Behavior, or Suicide Attempts.Baseline to End of Study Day 5 (± 2 days).Number of Participants that reported suicidal ideation, suicidal behavior, or suicide attempts per treatment arm and overall.

Participant flow

Participants by arm

ArmCount
Overall Number of Baseline Participants
14 subjects total participated in the study
14
Total14

Baseline characteristics

CharacteristicOverall Number of Baseline Participants
Age, Continuous31.2 years
STANDARD_DEVIATION 10.6
Body Mass Index22.8 (kg/m^2)
STANDARD_DEVIATION 1.8
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
14 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Height166.6 (cm)
STANDARD_DEVIATION 10.4
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
6 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
8 Participants
Region of Enrollment
United States
14 participants
Sex: Female, Male
Female
7 Participants
Sex: Female, Male
Male
7 Participants
Weight63.6 (kg)
STANDARD_DEVIATION 8

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
2 / 141 / 143 / 14
serious
Total, serious adverse events
0 / 140 / 140 / 14

Outcome results

Primary

Absolute Bioavailability After a Single Oral Dose of Hetlioz™(Tasimelteon) 20mg

The absolute bioavailability (F) of tasimelteon will be estimated from the dose-corrected AUC(inf) after oral and I.V. administration using an analysis of variance (ANOVA) model with treatment, period, sequence, and subject within sequence as the classification variables, using natural log-transformed data. The geometric mean ratio (GMR), oral-to-I.V., and its associated 90% confidence interval (CI) will be used as the estimate of F and its variability.

Time frame: pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-dose

ArmMeasureValue (GEOMETRIC_MEAN)
Absolute BioavailabilityAbsolute Bioavailability After a Single Oral Dose of Hetlioz™(Tasimelteon) 20mg38.3 Geometric Mean Ratio (%)
Secondary

AUC (Inf) of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.

AUC (inf) of Tasimelteon will be compared when given orally or administered as an I.V.

Time frame: pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-dose

ArmMeasureValue (MEAN)Dispersion
Absolute BioavailabilityAUC (Inf) of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.358 (h*ng/mL)Standard Deviation 271
IV (2 mg)AUC (Inf) of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.71.6 (h*ng/mL)Standard Deviation 23.9
Secondary

AUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. Dose

The mean +/- SD for the AUC(inf) of tasimelteon's metabolites after a single 20 mg oral dose of tasimelteon and after a single 2 mg I.V. administration of tasimelteon

Time frame: pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-dose

Population: Only 11 subjects could be analyzed for M11.

ArmMeasureGroupValue (MEAN)Dispersion
Absolute BioavailabilityAUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. DoseM9400 h*ng/mLStandard Deviation 139
Absolute BioavailabilityAUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. DoseM11125 h*ng/mLStandard Deviation 43.7
Absolute BioavailabilityAUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. DoseM12619 h*ng/mLStandard Deviation 364
Absolute BioavailabilityAUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. DoseM13431 h*ng/mLStandard Deviation 152
IV (2 mg)AUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. DoseM1338.2 h*ng/mLStandard Deviation 13
IV (2 mg)AUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. DoseM930.3 h*ng/mLStandard Deviation 10.3
IV (2 mg)AUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. DoseM1243.8 h*ng/mLStandard Deviation 25.4
IV (2 mg)AUC(Inf) of Tasimelteon's Metabolites After a Single Oral and I.V. DoseM1112.2 h*ng/mLStandard Deviation 4.4
Secondary

Cmax of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.

Cmax of tasimelteon will be compared when given orally or administered as an I.V.

Time frame: pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-dose

ArmMeasureValue (MEAN)Dispersion
Absolute BioavailabilityCmax of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.260 ng/mLStandard Deviation 189
IV (2 mg)Cmax of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.82.2 ng/mLStandard Deviation 20.5
Secondary

Cmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of Tasimelteon

The mean +/- SD for the Cmax of tasimelteon's metabolites after a single 20 mg oral dose of tasimelteon and after a single 2 mg I.V. administration of tasimelteon

Time frame: pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-dose

ArmMeasureGroupValue (MEAN)Dispersion
Absolute BioavailabilityCmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of TasimelteonM9303 ng/mLStandard Deviation 94.3
Absolute BioavailabilityCmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of TasimelteonM1153.2 ng/mLStandard Deviation 16.14
Absolute BioavailabilityCmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of TasimelteonM12113 ng/mLStandard Deviation 30.8
Absolute BioavailabilityCmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of TasimelteonM13370 ng/mLStandard Deviation 105
IV (2 mg)Cmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of TasimelteonM1329 ng/mLStandard Deviation 11.7
IV (2 mg)Cmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of TasimelteonM916.4 ng/mLStandard Deviation 6.16
IV (2 mg)Cmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of TasimelteonM127.31 ng/mLStandard Deviation 2.49
IV (2 mg)Cmax of Tasimelteon's Metabolites After an Oral and I.V. Dose of TasimelteonM113.7 ng/mLStandard Deviation 1.25
Secondary

Metabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of Tasimelteon

Comparison of the metabolite-to-parent AUC(inf) ratios for the oral and IV routes.

Time frame: pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-dose

ArmMeasureGroupValue (MEAN)Dispersion
Absolute BioavailabilityMetabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of TasimelteonM91.98 metabolite to parent AUC (inf) ratiosStandard Deviation 2.65
Absolute BioavailabilityMetabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of TasimelteonM110.51 metabolite to parent AUC (inf) ratiosStandard Deviation 0.35
Absolute BioavailabilityMetabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of TasimelteonM122.04 metabolite to parent AUC (inf) ratiosStandard Deviation 0.93
Absolute BioavailabilityMetabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of TasimelteonM131.72 metabolite to parent AUC (inf) ratiosStandard Deviation 1.12
IV (2 mg)Metabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of TasimelteonM130.51 metabolite to parent AUC (inf) ratiosStandard Deviation 0.14
IV (2 mg)Metabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of TasimelteonM90.39 metabolite to parent AUC (inf) ratiosStandard Deviation 0.12
IV (2 mg)Metabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of TasimelteonM120.54 metabolite to parent AUC (inf) ratiosStandard Deviation 0.15
IV (2 mg)Metabolite-to-parent AUC(Inf) Ratios After Oral Administration of a Single 20 mg Dose and IV Administration of a Single 2 mg Dose of TasimelteonM110.16 metabolite to parent AUC (inf) ratiosStandard Deviation 0.03
Secondary

Number of Participants With Adverse Events

Number of participants with treatment-emergent adverse event per treatment arm and overall.

Time frame: From Baseline to End of Study; Day 5 (± 2 days).

ArmMeasureGroupValue (NUMBER)
Absolute BioavailabilityNumber of Participants With Adverse Eventsheadache1 participants
Absolute BioavailabilityNumber of Participants With Adverse Eventsvomiting0 participants
Absolute BioavailabilityNumber of Participants With Adverse EventsSomnolance1 participants
IV (2 mg)Number of Participants With Adverse Eventsheadache1 participants
IV (2 mg)Number of Participants With Adverse Eventsvomiting1 participants
IV (2 mg)Number of Participants With Adverse EventsSomnolance0 participants
All SubjectsNumber of Participants With Adverse Eventsvomiting1 participants
All SubjectsNumber of Participants With Adverse EventsSomnolance1 participants
All SubjectsNumber of Participants With Adverse Eventsheadache2 participants
Secondary

T1/2 of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.

T1/2 of tasimelteon will be compared when given orally or administered as an I.V.

Time frame: pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours pos-dose

ArmMeasureValue (MEAN)Dispersion
Absolute BioavailabilityT1/2 of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.1.06 hourStandard Deviation 0.23
IV (2 mg)T1/2 of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.1.02 hourStandard Deviation 0.23
Secondary

Total Clearance of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.

CL of tasimelteon will be compared when given orally or administered as an I.V.

Time frame: pre-dose, -0.125, 0, 0.083, 0.167, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post-dose

ArmMeasureValue (MEAN)Dispersion
Absolute BioavailabilityTotal Clearance of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.2241 (mL/min)Standard Deviation 3592
IV (2 mg)Total Clearance of Tasimelteon After a Single 20 mg Oral Dose and After a Single 2 mg I.V. Administration.505 (mL/min)Standard Deviation 135
Other Pre-specified

Number of Participants That Reported Suicidal Ideation, Suicidal Behavior, or Suicide Attempts.

Number of Participants that reported suicidal ideation, suicidal behavior, or suicide attempts per treatment arm and overall.

Time frame: Baseline to End of Study Day 5 (± 2 days).

ArmMeasureValue (NUMBER)
Absolute BioavailabilityNumber of Participants That Reported Suicidal Ideation, Suicidal Behavior, or Suicide Attempts.0 participants
IV (2 mg)Number of Participants That Reported Suicidal Ideation, Suicidal Behavior, or Suicide Attempts.0 participants
All SubjectsNumber of Participants That Reported Suicidal Ideation, Suicidal Behavior, or Suicide Attempts.0 participants

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