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A Study of Islatravir (MK-8591) in Anti-Retroviral Therapy-Naive, Human Immunodeficiency Virus-1 Infected Participants (MK-8591-003)

A Single-Dose Clinical Trial to Study the Safety, Tolerability, Pharmacokinetics, and Anti-Retroviral Activity of MK-8591 Monotherapy in Anti-Retroviral Therapy (ART)-Naive, HIV-1 Infected Patients

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02217904
Enrollment
30
Registered
2014-08-15
Start date
2015-09-17
Completion date
2017-05-11
Last updated
2019-08-12

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

Conditions

HIV-1

Brief summary

This study will evaluate the safety, tolerability, pharmacokinetics, and anti-retroviral therapy (ART) activity of islatravir (MK-8591) monotherapy in ART-naive, human immunodeficiency virus-1 (HIV-1) infected participants. The primary hypothesis is that at a safe and tolerable dose of islatravir, the true mean difference in the plasma HIV-1 ribonucleic acid (RNA) reduction from baseline between islatravir and placebo is at least 0.5 log (base10) copies/mL.

Interventions

DRUG1 mg islatravir

Single oral dose of 1 mg islatravir administered following ≥8 hour fast

DRUG2 mg islatravir

Single oral dose of 2 mg islatravir administered following ≥8 hour fast

DRUG10 mg islatravir

Single oral dose of 10 mg islatravir administered following ≥8 hour fast

DRUG30 mg islatravir

Single oral dose of 30 mg islatravir administered following ≥8 hour fast

DRUG0.5 mg islatravir

Single oral dose of 0.5 mg islatravir administered following ≥8 hour fast

DRUG0.25 mg islatravir

Single oral dose of 0.25 mg islatravir administered following ≥8 hour fast

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
No

Inclusion criteria

* Non-pregnant, non-breast feeding, postmenopausal or surgically sterile female * Female with reproductive potential agrees to use (or have male partner use) two acceptable methods of birth control * Male agrees to use acceptable method of contraception during study and for 90 days after last dose of trial drug * Has stable baseline health, other than HIV infection * Has no significantly abnormal electrocardiogram * Is HIV-1 positive * Have a screening plasma HIV-1 RNA ≥ 10,000 copies/mL within 30 days prior to the treatment phase of this study. For inclusion in Panel Islatravir Extended Observation, participants must also have a screening plasma HIV-1 RNA ≤ 25,000 copies/mL within 30 days prior to the treatment phase. * Is ART naive * Has not received any investigational agent or marketed ART within 30 days of trial drug administration * Is diagnosed with HIV-1 infection \>= 3 months prior to screening * Is willing to receive no other ART during treatment phase of study * Has no evidence of mutations conferring resistance to nucleoside reverse transcriptase inhibitors (NRTIs)

Exclusion criteria

* Is mentally or legally institutionalized/incapacitated, or has significant emotional problems, or has a history of clinically significant psychiatric disorder of the last 5 years * Has a history of clinically significant endocrine, gastrointestinal, cardiovascular, hematological, hepatic, immunological (outside of HIV-1 infection), renal, respiratory, genitourinary, major neurological abnormalities or diseases * Has a history of cancer (malignancy) * Has a history of significant multiple and/or severe allergies, or had an anaphylactic reaction to drugs or food * Is positive for hepatitis B surface antigen * Has a history of chronic Hepatitis C * Had major surgery or lost 500 mL of blood with 4 weeks prior to screening visit * Has participated in another investigational trial within 4 weeks prior to dosing visit * Will use any medications, prescribed drugs, or herbal remedies 4 weeks prior to dosing of trial drug, up to the post-trial visit * Consumes excessive amounts of alcohol, caffeinated beverages, or tobacco products * Uses illicit drugs or has a history of drug abuse within the prior 2 years

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Plasma HIV-1 RNA at 168 Hours Post-DoseBaseline and 168 hours (7 days) post-dosePlasma HIV-1 RNA was measured using the Roche COBAS Ampliprep/COBAS TaqMan HIV-1 test v.2.0, which has a linear range from 20 to 10,000,000 copies/mL. The lower limit of detection has 100% specificity at 20 copies/mL. Additionally, the test increases the probability of detection and expands coverage by targeting two highly conserved regions of the HIV-1 genome to compensate for the possibility of mutations or mismatches.
Number of Participants With One or More Adverse EventsUp to 21 days post-doseAn adverse event (AE) is any untoward medical occurrence in a study participant administered a pharmaceutical product that does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product, whether or not related to the medicinal product.

Secondary

MeasureTime frameDescription
Concentration of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells at 168 Hours Post-Dose (C168hr)168 hours after islatravir administrationBlood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine C168hr.
Time to Maximum Concentration (Tmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells4, 12, 24, 96, 120, 144, and 168 hours after islatravir administration. Value at predose was inferred from plasma predose sample.Blood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine TMax.
Apparent Terminal Half-Life (t1/2) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells4, 12, 24, 96, 120, 144, and 168 hours after islatravir administration. Value at predose was inferred from plasma predose sample.Blood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine apparent terminal t1/2.
Area Under the Concentration-Time Curve of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells From Time 0 to 168 Hours (AUC0-168hr)4, 12, 24, 96, 120, 144, and 168 hours after islatravir administration. Value at predose was inferred from plasma predose sample.Blood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine AUC0-168hr.
Maximum Plasma Concentration (Cmax) of IslatravirPredose and at 0.25, 0.5, 1, 2, 4, 8, 12, 24, 48, and 96 hours after islatravir administrationBlood was collected for the determination of Cmax of islatravir in plasma.
Time to Maximum Plasma Concentration (Tmax) of IslatravirPredose and at 0.25, 0.5, 1, 2, 4, 8, 12, 24, 48, and 96 hours after islatravir administrationBlood was collected for the determination of Tmax of islatravir in plasma.
Apparent Terminal Half-Life (t1/2) of Islatravir in PlasmaPredose and at 0.25, 0.5, 1, 2, 4, 8, 12, 24, 48, and 96 hours after islatravir administrationBlood was collected for the determination of apparent terminal t1/2 of islatravir in plasma.
Area Under the Plasma Concentration-Time Curve of Islatravir From Time 0 to 168 Hours (AUC0-168hr)Predose and at 0.25, 0.5, 1, 2, 4, 8, 12, 24, 48, and 96 hours after islatravir administration. Value at 168 hours was extrapolated.Blood was collected for the determination of AUC0-168hr of islatravir in plasma.
Maximum Concentration (Cmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells4, 12, 24, 96, 120, 144, and 168 hours after islatravir administration. Value at predose was inferred from plasma predose sample.Blood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine Cmax.

Participant flow

Pre-assignment details

Additional panels (F: 0.25 mg islatravir; and G: 30 mg islatravir Extended Observation) were initially planned but were not conducted.

Participants by arm

ArmCount
Panel A: 10 mg Islatravir
Participants received a single dose of 10 mg islatravir.
6
Panel B: 2 mg Islatravir
Participants received a single dose of 2 mg islatravir.
6
Panel C: 30 mg Islatravir
Participants received a single dose of 30 mg islatravir.
6
Panel D: 1 mg Islatravir
Participants received a single dose of 1 mg islatravir.
6
Panel E: 0.5 mg Islatravir
Participants received a single dose of 0.5 mg islatravir.
6
Total30

Baseline characteristics

CharacteristicPanel A: 10 mg IslatravirPanel B: 2 mg IslatravirPanel C: 30 mg IslatravirPanel D: 1 mg IslatravirPanel E: 0.5 mg IslatravirTotal
Age, Continuous31.5 Years
STANDARD_DEVIATION 10
42.2 Years
STANDARD_DEVIATION 9.8
35.5 Years
STANDARD_DEVIATION 9.1
32.7 Years
STANDARD_DEVIATION 12.7
35.5 Years
STANDARD_DEVIATION 11.3
35.5 Years
STANDARD_DEVIATION 10.6
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants0 Participants0 Participants1 Participants0 Participants3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
4 Participants6 Participants6 Participants5 Participants6 Participants27 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Plasma HIV-1 Ribonucleic Acid (RNA)4.68 log10 copies/mL
STANDARD_DEVIATION 0.39
4.7 log10 copies/mL
STANDARD_DEVIATION 0.25
4.17 log10 copies/mL
STANDARD_DEVIATION 0.41
4.66 log10 copies/mL
STANDARD_DEVIATION 0.2
4.59 log10 copies/mL
STANDARD_DEVIATION 0.5
4.56 log10 copies/mL
STANDARD_DEVIATION 0.4
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
6 Participants6 Participants6 Participants5 Participants6 Participants29 Participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Male
6 Participants6 Participants6 Participants6 Participants6 Participants30 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
0 / 60 / 60 / 60 / 60 / 6
other
Total, other adverse events
5 / 65 / 66 / 65 / 66 / 6
serious
Total, serious adverse events
0 / 60 / 60 / 60 / 60 / 6

Outcome results

Primary

Change From Baseline in Plasma HIV-1 RNA at 168 Hours Post-Dose

Plasma HIV-1 RNA was measured using the Roche COBAS Ampliprep/COBAS TaqMan HIV-1 test v.2.0, which has a linear range from 20 to 10,000,000 copies/mL. The lower limit of detection has 100% specificity at 20 copies/mL. Additionally, the test increases the probability of detection and expands coverage by targeting two highly conserved regions of the HIV-1 genome to compensate for the possibility of mutations or mismatches.

Time frame: Baseline and 168 hours (7 days) post-dose

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had available plasma HIV-1 RNA data at baseline and 168 hours post-dose, and were evaluable for the outcome measure.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Panel A: 10 mg IslatravirChange From Baseline in Plasma HIV-1 RNA at 168 Hours Post-Dose-1.67 log10 copies/mL
Panel B: 2 mg IslatravirChange From Baseline in Plasma HIV-1 RNA at 168 Hours Post-Dose-1.35 log10 copies/mL
Panel C: 30 mg IslatravirChange From Baseline in Plasma HIV-1 RNA at 168 Hours Post-Dose-1.60 log10 copies/mL
Panel D: 1 mg IslatravirChange From Baseline in Plasma HIV-1 RNA at 168 Hours Post-Dose-1.30 log10 copies/mL
Panel E: 0.5 mg IslatravirChange From Baseline in Plasma HIV-1 RNA at 168 Hours Post-Dose-1.20 log10 copies/mL
Comparison: Adjusted by Placebo data pooled from historical placebo data from recent monotherapy studies in HIV-1 infected participants (NCT00100048, NCT01466985, NCT01152255, and NCT01353898) and fitted with a longitudinal data analysis (LDA) model containing fixed effects for study and time, and a random effect for participants. LS mean of pooled historical placebo data was -0.03 log10 copies/mL (95% CI -014, 0.09) change from baseline at 168 hours post dose.
Comparison: Adjusted by Placebo data pooled from historical placebo data from recent monotherapy studies in HIV-1 infected participants (NCT00100048, NCT01466985, NCT01152255, and NCT01353898) and fitted with a longitudinal data analysis (LDA) model containing fixed effects for study and time, and a random effect for participants. LS mean of pooled historical placebo data was -0.03 log10 copies/mL (95% CI -014, 0.09) change from baseline at 168 hours post dose.
Comparison: Adjusted by Placebo data pooled from historical placebo data from recent monotherapy studies in HIV-1 infected participants (NCT00100048, NCT01466985, NCT01152255, and NCT01353898) and fitted with a longitudinal data analysis (LDA) model containing fixed effects for study and time, and a random effect for participants. LS mean of pooled historical placebo data was -0.03 log10 copies/mL (95% CI -014, 0.09) change from baseline at 168 hours post dose.
Comparison: Adjusted by Placebo data pooled from historical placebo data from recent monotherapy studies in HIV-1 infected participants (NCT00100048, NCT01466985, NCT01152255, and NCT01353898) and fitted with a longitudinal data analysis (LDA) model containing fixed effects for study and time, and a random effect for participants. LS mean of pooled historical placebo data was -0.03 log10 copies/mL (95% CI -014, 0.09) change from baseline at 168 hours post dose.
Comparison: Adjusted by Placebo data pooled from historical placebo data from recent monotherapy studies in HIV-1 infected participants (NCT00100048, NCT01466985, NCT01152255, and NCT01353898) and fitted with a longitudinal data analysis (LDA) model containing fixed effects for study and time, and a random effect for participants. LS mean of pooled historical placebo data was -0.03 log10 copies/mL (95% CI -014, 0.09) change from baseline at 168 hours post dose.
Primary

Number of Participants With One or More Adverse Events

An adverse event (AE) is any untoward medical occurrence in a study participant administered a pharmaceutical product that does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product, whether or not related to the medicinal product.

Time frame: Up to 21 days post-dose

Population: All participants who received at least one dose of investigational drug

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Panel A: 10 mg IslatravirNumber of Participants With One or More Adverse Events5 Participants
Panel B: 2 mg IslatravirNumber of Participants With One or More Adverse Events5 Participants
Panel C: 30 mg IslatravirNumber of Participants With One or More Adverse Events6 Participants
Panel D: 1 mg IslatravirNumber of Participants With One or More Adverse Events5 Participants
Panel E: 0.5 mg IslatravirNumber of Participants With One or More Adverse Events6 Participants
Secondary

Apparent Terminal Half-Life (t1/2) of Islatravir in Plasma

Blood was collected for the determination of apparent terminal t1/2 of islatravir in plasma.

Time frame: Predose and at 0.25, 0.5, 1, 2, 4, 8, 12, 24, 48, and 96 hours after islatravir administration

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had apparent terminal t1/2 of islatravir in plasma data available, and were evaluable for the outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Panel A: 10 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir in Plasma59.7 HoursGeometric Coefficient of Variation 15.4
Panel B: 2 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir in Plasma47.4 HoursGeometric Coefficient of Variation 74.6
Panel C: 30 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir in Plasma56.8 HoursGeometric Coefficient of Variation 11.2
Panel D: 1 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir in Plasma10.4 HoursGeometric Coefficient of Variation 144
Panel E: 0.5 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir in Plasma2.31 HoursGeometric Coefficient of Variation 16.7
Secondary

Apparent Terminal Half-Life (t1/2) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells

Blood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine apparent terminal t1/2.

Time frame: 4, 12, 24, 96, 120, 144, and 168 hours after islatravir administration. Value at predose was inferred from plasma predose sample.

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had apparent terminal t1/2 of islatravir triphosphate in peripheral blood mononuclear cells data available, and were evaluable for the outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Panel A: 10 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells128 HoursGeometric Coefficient of Variation 42.2
Panel B: 2 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells120 HoursGeometric Coefficient of Variation 14.7
Panel C: 30 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells78.5 HoursGeometric Coefficient of Variation 31.4
Panel D: 1 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells118 HoursGeometric Coefficient of Variation 16.1
Panel E: 0.5 mg IslatravirApparent Terminal Half-Life (t1/2) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells95.3 HoursGeometric Coefficient of Variation 38.2
Secondary

Area Under the Concentration-Time Curve of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells From Time 0 to 168 Hours (AUC0-168hr)

Blood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine AUC0-168hr.

Time frame: 4, 12, 24, 96, 120, 144, and 168 hours after islatravir administration. Value at predose was inferred from plasma predose sample.

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had AUC0-168hr of triphosphate in peripheral blood mononuclear cells data available, and were evaluable for the outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Panel A: 10 mg IslatravirArea Under the Concentration-Time Curve of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells From Time 0 to 168 Hours (AUC0-168hr)227 hr*pmol/10^6 cellsGeometric Coefficient of Variation 33.3
Panel B: 2 mg IslatravirArea Under the Concentration-Time Curve of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells From Time 0 to 168 Hours (AUC0-168hr)46.9 hr*pmol/10^6 cellsGeometric Coefficient of Variation 38.1
Panel C: 30 mg IslatravirArea Under the Concentration-Time Curve of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells From Time 0 to 168 Hours (AUC0-168hr)926 hr*pmol/10^6 cellsGeometric Coefficient of Variation 47.7
Panel D: 1 mg IslatravirArea Under the Concentration-Time Curve of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells From Time 0 to 168 Hours (AUC0-168hr)35.9 hr*pmol/10^6 cellsGeometric Coefficient of Variation 27.6
Panel E: 0.5 mg IslatravirArea Under the Concentration-Time Curve of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells From Time 0 to 168 Hours (AUC0-168hr)23.1 hr*pmol/10^6 cellsGeometric Coefficient of Variation 83
Secondary

Area Under the Plasma Concentration-Time Curve of Islatravir From Time 0 to 168 Hours (AUC0-168hr)

Blood was collected for the determination of AUC0-168hr of islatravir in plasma.

Time frame: Predose and at 0.25, 0.5, 1, 2, 4, 8, 12, 24, 48, and 96 hours after islatravir administration. Value at 168 hours was extrapolated.

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had plasma AUC-168hr of islatravir data available, and were evaluable for the outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Panel A: 10 mg IslatravirArea Under the Plasma Concentration-Time Curve of Islatravir From Time 0 to 168 Hours (AUC0-168hr)1020 hr*nMGeometric Coefficient of Variation 16.8
Panel B: 2 mg IslatravirArea Under the Plasma Concentration-Time Curve of Islatravir From Time 0 to 168 Hours (AUC0-168hr)143 hr*nMGeometric Coefficient of Variation 39.6
Panel C: 30 mg IslatravirArea Under the Plasma Concentration-Time Curve of Islatravir From Time 0 to 168 Hours (AUC0-168hr)3020 hr*nMGeometric Coefficient of Variation 24.6
Panel D: 1 mg IslatravirArea Under the Plasma Concentration-Time Curve of Islatravir From Time 0 to 168 Hours (AUC0-168hr)88.3 hr*nMGeometric Coefficient of Variation 33.8
Panel E: 0.5 mg IslatravirArea Under the Plasma Concentration-Time Curve of Islatravir From Time 0 to 168 Hours (AUC0-168hr)38.3 hr*nMGeometric Coefficient of Variation 25.8
Secondary

Concentration of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells at 168 Hours Post-Dose (C168hr)

Blood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine C168hr.

Time frame: 168 hours after islatravir administration

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had C168hr of islatravir triphosphate in peripheral blood mononuclear cells data available, and were evaluable for the outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Panel A: 10 mg IslatravirConcentration of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells at 168 Hours Post-Dose (C168hr)0.983 pmol/10^6 cellsGeometric Coefficient of Variation 26
Panel B: 2 mg IslatravirConcentration of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells at 168 Hours Post-Dose (C168hr)0.188 pmol/10^6 cellsGeometric Coefficient of Variation 39.2
Panel C: 30 mg IslatravirConcentration of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells at 168 Hours Post-Dose (C168hr)4.83 pmol/10^6 cellsGeometric Coefficient of Variation 85.9
Panel D: 1 mg IslatravirConcentration of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells at 168 Hours Post-Dose (C168hr)0.164 pmol/10^6 cellsGeometric Coefficient of Variation 31.4
Panel E: 0.5 mg IslatravirConcentration of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells at 168 Hours Post-Dose (C168hr)0.116 pmol/10^6 cellsGeometric Coefficient of Variation 85.6
Secondary

Maximum Concentration (Cmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells

Blood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine Cmax.

Time frame: 4, 12, 24, 96, 120, 144, and 168 hours after islatravir administration. Value at predose was inferred from plasma predose sample.

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had Cmax of islatravir triphosphate in peripheral blood mononuclear cells data available, and were evaluable for the outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Panel A: 10 mg IslatravirMaximum Concentration (Cmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells2.81 pmol/10^6 cellsGeometric Coefficient of Variation 49.9
Panel B: 2 mg IslatravirMaximum Concentration (Cmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells0.495 pmol/10^6 cellsGeometric Coefficient of Variation 62.9
Panel C: 30 mg IslatravirMaximum Concentration (Cmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells8.9 pmol/10^6 cellsGeometric Coefficient of Variation 60.3
Panel D: 1 mg IslatravirMaximum Concentration (Cmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells0.408 pmol/10^6 cellsGeometric Coefficient of Variation 49.3
Panel E: 0.5 mg IslatravirMaximum Concentration (Cmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells0.263 pmol/10^6 cellsGeometric Coefficient of Variation 54.5
Secondary

Maximum Plasma Concentration (Cmax) of Islatravir

Blood was collected for the determination of Cmax of islatravir in plasma.

Time frame: Predose and at 0.25, 0.5, 1, 2, 4, 8, 12, 24, 48, and 96 hours after islatravir administration

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had plasma Cmax of islatravir data available, and were evaluable for the outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Panel A: 10 mg IslatravirMaximum Plasma Concentration (Cmax) of Islatravir235 nMGeometric Coefficient of Variation 32.1
Panel B: 2 mg IslatravirMaximum Plasma Concentration (Cmax) of Islatravir43.8 nMGeometric Coefficient of Variation 51.2
Panel C: 30 mg IslatravirMaximum Plasma Concentration (Cmax) of Islatravir678 nMGeometric Coefficient of Variation 29.6
Panel D: 1 mg IslatravirMaximum Plasma Concentration (Cmax) of Islatravir38.8 nMGeometric Coefficient of Variation 31.3
Panel E: 0.5 mg IslatravirMaximum Plasma Concentration (Cmax) of Islatravir20.3 nMGeometric Coefficient of Variation 36.4
Secondary

Time to Maximum Concentration (Tmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells

Blood was collected to measure intracellular islatravir triphosphate concentration in peripheral blood mononuclear cells and determine TMax.

Time frame: 4, 12, 24, 96, 120, 144, and 168 hours after islatravir administration. Value at predose was inferred from plasma predose sample.

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had Tmax of islatravir triphosphate in peripheral blood mononuclear cells data available, and were evaluable for the outcome measure.

ArmMeasureValue (MEDIAN)
Panel A: 10 mg IslatravirTime to Maximum Concentration (Tmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells12 Hour
Panel B: 2 mg IslatravirTime to Maximum Concentration (Tmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells8 Hour
Panel C: 30 mg IslatravirTime to Maximum Concentration (Tmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells24 Hour
Panel D: 1 mg IslatravirTime to Maximum Concentration (Tmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells8 Hour
Panel E: 0.5 mg IslatravirTime to Maximum Concentration (Tmax) of Islatravir Triphosphate in Peripheral Blood Mononuclear Cells12 Hour
Secondary

Time to Maximum Plasma Concentration (Tmax) of Islatravir

Blood was collected for the determination of Tmax of islatravir in plasma.

Time frame: Predose and at 0.25, 0.5, 1, 2, 4, 8, 12, 24, 48, and 96 hours after islatravir administration

Population: The analysis population consisted of all participants who received at least 1 dose of study treatment, were compliant with study procedures, had plasma Tmax of islatravir data available, and were evaluable for the outcome measure.

ArmMeasureValue (MEDIAN)
Panel A: 10 mg IslatravirTime to Maximum Plasma Concentration (Tmax) of Islatravir1 Hour
Panel B: 2 mg IslatravirTime to Maximum Plasma Concentration (Tmax) of Islatravir0.5 Hour
Panel C: 30 mg IslatravirTime to Maximum Plasma Concentration (Tmax) of Islatravir0.75 Hour
Panel D: 1 mg IslatravirTime to Maximum Plasma Concentration (Tmax) of Islatravir0.5 Hour
Panel E: 0.5 mg IslatravirTime to Maximum Plasma Concentration (Tmax) of Islatravir0.5 Hour

Source: ClinicalTrials.gov · Data processed: Feb 28, 2026