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Drug-Drug Interaction Study of Vesatolimod in Adults With HIV-1 Who Have Very Low or Undetectable Virus Levels

A Phase 1, Open-label, Multicohort Study to Evaluate the Impact of Inhibitors and Inducers of Cytochrome P450 Enzyme (CYP)3A and/or P-glycoprotein (P-gp) on the Pharmacokinetics (PK) of Vesatolimod (VES) in Virologically Suppressed Adults With HIV-1 on Antiretroviral Therapy (ART)

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05458102
Enrollment
18
Registered
2022-07-14
Start date
2022-08-19
Completion date
2023-05-01
Last updated
2024-12-03

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

Conditions

Human Immunodeficiency Virus Type 1 (HIV-1) Infection

Brief summary

The goal of this clinical study is to learn more about the impact of cobicistat (COBI) (P-glycoprotein (P-gp), breast cancer resistance protein (BCRP), and strong cytochrome P450 enzyme \[CYP\]3A inhibitor), voriconazole (VOR) (strong CYP3A inhibitor), and rifabutin (RFB) (moderate CYP3A inducer) on the study drug, vesatolimod (VES), in people with HIV-1 on antiretroviral therapy (ART).

Interventions

Administered orally

DRUGCobicistat

Administered orally

DRUGVoriconazole

Administered orally

DRUGRifabutin

Administered orally

Sponsors

Gilead Sciences
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

Key Inclusion Criteria: * On an antiretroviral therapy (ART) regimen for at least 6 consecutive months, with no change in the ART regimen within 2 months prior to screening. Permitted ARTs are as follows: * Cohort 1: A regimen of (bictegravir \[BIC\], dolutegravir \[DTG\], raltegravir \[RAL\], or doravirine \[DOR\]) plus Nucleoside Reverse Transcriptase Inhibitors (NRTIs). Examples of acceptable regimens include BIC/emtricitabine/tenofovir, DTG/ abacavir (ABC)/3TC, DTG/3TC, DTG + emtricitabine/tenofovir, or DOR/3TC/tenofovir * Cohort 2: A DTG-based regimen is required (DTG/ABC/3TC), (DTG/3TC), or (DTG + NRTIs) * Plasma HIV-1 RNA levels less than 50 copies/mL at screening * Have normal hematologic function with an absolute neutrophil count greater than or equal to 1.5 × 10\^9/L, platelets greater than or equal to 150 × 10\^9/L; hemoglobin greater than or equal to 10.5 g/dL for females and greater than or equal to 11.5 g/dL for males * Clusters of differentiation (CD) 4 T cell count greater than or equal to 350 cells/μL * Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) less than or equal to 2.5 x upper limit of normal (ULN) and total bilirubin less than or equal to 1.5 mg/dL, or normal direct bilirubin and creatinine less than or equal to 1.25 x ULN * Have a calculated creatinine clearance (CLcr) of at least 60 mL/min (using the Cockcroft-Gault method) based on serum creatinine and actual body weight as measured at screening and upon admission * Individuals assigned female at birth and of childbearing potential who engage in heterosexual intercourse must agree to use protocol-specified method(s) of contraception * Must be willing and able to comply with all study requirements and available to complete the study schedule of assessments * In the judgment of the investigator, be in good general health, based on review of the results from a screening visit Key

Exclusion criteria

* Have received any study drug within 30 days prior to study dosing * Participation in any other clinical study (including observation studies) without prior approval from the sponsor is prohibited while participating in this study * Have current alcohol or substance abuse judged by the investigator to potentially interfere with individual compliance or individual safety, or a positive drug or alcohol test at screening or baseline * No Evidence of chronic hepatitis B virus (HBV) infection (defined as positive hepatitis B surface antigen \[HBsAg\] and/or positive HBV core antibody with positive reflex HBV DNA polymerase chain reaction (PCR)). Note: positive HBV core antibody with negative reflex HBV DNA PCR results are acceptable * No Evidence of active hepatitis C virus (HCV) infection (defined as positive hepatitis C antibody and HCV RNA above lower limit of quantitation). Note: positive anti-HCV antibody and negative HCV PCR results are acceptable * Acute febrile illness within 35 days prior to Day 1 * Have been treated with systemic steroids, immunosuppressant therapies, or chemotherapeutic agents within 3 months prior to screening or is expected to receive these agents during the study * Received any vaccine or immunomodulatory medication within 4 weeks prior to screening. Elective vaccination (eg, flu shot, hepatitis A or B vaccine) during the course of the study will require prior approval from the sponsor * Coronavirus disease of 2019 (COVID-19) vaccinations are allowed, with the requirement that they should not be administered within 7 ± 2 days of receiving VES * Have a history of any of the following: * Significant serious skin disease, such as but not limited to rash, food allergy, eczema, psoriasis, or urticaria * Significant drug sensitivity or drug allergy (such as anaphylaxis or hepatoxicity) * Known hypersensitivity to the study drugs, their metabolites, or to formulation excipients * Autoimmune disease * Significant cardiac disease or a family history of long QT syndrome, or unexplained death in an otherwise healthy individual between the ages of 1 and 30 years * Syncope, palpitations, or unexplained dizziness * Implanted defibrillator or pacemaker * Liver disease, including Gilbert syndrome * Severe peptic ulcer disease requiring prolonged (≥ 6 months) medical treatment * Medical or surgical treatment that permanently altered gastric absorption (eg, gastric or intestinal surgery). A history of cholecystectomy is not exclusionary * Have any serious or active medical or psychiatric illness (including depression) that, in the opinion of the investigator, would interfere with individual treatment, assessment, or compliance with the protocol * For Cohort 1, individuals with CYP2C19 genotype of CYP2C19\*2/\*2, CYP2C19\*2/\*3, or CYP2C19\*3/\*3 Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Pharmacokinetic (PK) Parameter : AUClast of Vesatolimod (VES)Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6AUClast is defined as an area under the concentration versus time curve from time zero to the last quantifiable concentration. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : AUCinf of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6AUCinf is defined as an area under the concentration versus time curve extrapolated to infinite time, calculated as AUClast + (Clast/Lambda z). Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : Cmax of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6Cmax is defined as the maximum observed concentration of drug. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : %AUCexp of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6%AUCexp is defined as the percentage of AUC extrapolated between AUClast and AUCinf, calculated as (\[AUCinf-AUClast\]/AUCinf)\*100. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : Tmax of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6Tmax is defined as the time (observed time point) of Cmax. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : Clast of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6Clast is defined as the last observed quantifiable concentration of the drug. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : Tlast of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6Tlast is defined as the time (observed time point) of Clast. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : Lambda z of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6Lambda z is defined as the terminal elimination rate constant, estimated by linear regression of the terminal elimination phase of the log concentration of drug versus time curve of the drug. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : t1/2 of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6t1/2 is defined as the terminal elimination half-life. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : CL/F of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6CL/F is defined as an apparent oral clearance. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
PK Parameter : Vz/F of VESPre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6Vz/F is defined as an apparent volume of distribution of the drug. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.
Percentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)First dose date up to last dose date plus 30 days (up to 77 days for Cohort 1, and up to 54 days for Cohort 2)An adverse event (AE) is any untoward medical occurrence in a clinical study participant administered a study drug that does not necessarily have a causal relationship with the treatment. An AE can, therefore, be any unfavorable and/or unintended sign, symptom, or disease temporally associated with the use of a study drug, whether or not considered related to the study drug. Adverse events may also include pretreatment or posttreatment complications that occur as a result of protocol-specified procedures, or special situations. TEAES included all AEs began on or after the study drug start date.
Percentage of Participants Who Experienced Treatment-Emergent Laboratory AbnormalitiesFirst dose date up to last dose date plus 30 days (up to 77 days for Cohort 1, and up to 54 days for Cohort 2)A treatment-emergent laboratory abnormality was defined as an increase of at least 1 toxicity grade from predose at any time postdose. Data for participants with post baseline toxicity grade 1 or higher is reported.

Countries

United States

Participant flow

Recruitment details

Participants were enrolled at study sites in the United States.

Pre-assignment details

59 participants were screened.

Participants by arm

ArmCount
Cohort 1: Vesatolimod + Cobicistat + Voriconazole
Participants received a single dose of vesatolimod (VES) 2 mg on Day 1 of Period 1. In Period 2, participants received cobicistat (COBI) 150 mg once daily on Days 1 to 5 along with a single dose of VES 2 mg on Day 2. In Period 3, participants received a loading dose of voriconazole (VOR) 400 mg twice daily on Day 1, then VOR 200 mg twice daily on Days 2 to 6, and a single dose of VES 2 mg in the morning on Day 3. There was a washout period of 7 to 14 days between treatments in Period 1 Day 1 and Period 2 Day 1 and a washout period of 14 to 21 days between treatments in Period 2 Day 5 and Period 3 Day 1.
15
Cohort 2: Vesatolimod + Rifabutin
Participants received a single dose of VES 6 mg on Day 1. In Period 2, participants received Rifabutin (RFB) 300 mg once daily on Days 1 to 9 along with a single dose of VES 6 mg on Day 6. There was a washout period of 7 to 14 days between treatments in Period 1 Day 1 and Period 2 Day 1.
2
Total17

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event10
Overall StudyEnrolled but never treated10
Overall StudyProtocol Violation10
Overall StudyWithdrew consent20

Baseline characteristics

CharacteristicCohort 1: Vesatolimod + Cobicistat + VoriconazoleCohort 2: Vesatolimod + RifabutinTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
1 Participants0 Participants1 Participants
Age, Categorical
Between 18 and 65 years
14 Participants2 Participants16 Participants
Age, Continuous47 years
STANDARD_DEVIATION 14.5
45 years
STANDARD_DEVIATION 14.8
47 years
STANDARD_DEVIATION 14
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants0 Participants3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
12 Participants0 Participants12 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Asian
2 Participants0 Participants2 Participants
Race (NIH/OMB)
Black or African American
10 Participants0 Participants10 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
2 Participants0 Participants2 Participants
Region of Enrollment
United States
15 Participants2 Participants17 Participants
Sex: Female, Male
Female
2 Participants0 Participants2 Participants
Sex: Female, Male
Male
13 Participants0 Participants13 Participants

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
EG009
affected / at risk
deaths
Total, all-cause mortality
0 / 150 / 130 / 130 / 110 / 110 / 110 / 10 / 20 / 20 / 2
other
Total, other adverse events
2 / 155 / 130 / 134 / 111 / 111 / 110 / 00 / 21 / 21 / 2
serious
Total, serious adverse events
0 / 150 / 130 / 130 / 110 / 110 / 110 / 00 / 20 / 20 / 2

Outcome results

Primary

Percentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)

An adverse event (AE) is any untoward medical occurrence in a clinical study participant administered a study drug that does not necessarily have a causal relationship with the treatment. An AE can, therefore, be any unfavorable and/or unintended sign, symptom, or disease temporally associated with the use of a study drug, whether or not considered related to the study drug. Adverse events may also include pretreatment or posttreatment complications that occur as a result of protocol-specified procedures, or special situations. TEAES included all AEs began on or after the study drug start date.

Time frame: First dose date up to last dose date plus 30 days (up to 77 days for Cohort 1, and up to 54 days for Cohort 2)

Population: Participants in Safety Analysis Set were analyzed. Per planned analysis, the data for adverse events were summarized by study treatments administered in Cohorts 1 and 2 per period.

ArmMeasureValue (NUMBER)
Cohort 1: Vesatolimod 2 mgPercentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)13.3 percentage of participants
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPercentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)38.5 percentage of participants
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPercentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)0 percentage of participants
Cohort 2: Vesatolimod 6 mgPercentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)36.4 percentage of participants
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPercentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)9.1 percentage of participants
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPercentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)9.1 percentage of participants
Cohort 2: Vesatolimod 6 mgPercentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)0 percentage of participants
Cohort 2: Rifabutin 300 mgPercentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)50.0 percentage of participants
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPercentage of Participants Who Experienced Treatment-Emergent Adverse Events (TEAEs)50.0 percentage of participants
Primary

Percentage of Participants Who Experienced Treatment-Emergent Laboratory Abnormalities

A treatment-emergent laboratory abnormality was defined as an increase of at least 1 toxicity grade from predose at any time postdose. Data for participants with post baseline toxicity grade 1 or higher is reported.

Time frame: First dose date up to last dose date plus 30 days (up to 77 days for Cohort 1, and up to 54 days for Cohort 2)

Population: Participants in Safety Analysis Set with available data were analyzed. Per planned analysis, the data for adverse events were summarized by study treatments administered in Cohorts 1 and 2 per period.

ArmMeasureValue (NUMBER)
Cohort 1: Vesatolimod 2 mgPercentage of Participants Who Experienced Treatment-Emergent Laboratory Abnormalities35.7 percentage of participants
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPercentage of Participants Who Experienced Treatment-Emergent Laboratory Abnormalities53.8 percentage of participants
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPercentage of Participants Who Experienced Treatment-Emergent Laboratory Abnormalities63.6 percentage of participants
Cohort 2: Vesatolimod 6 mgPercentage of Participants Who Experienced Treatment-Emergent Laboratory Abnormalities50.0 percentage of participants
Cohort 2: Rifabutin 300 mgPercentage of Participants Who Experienced Treatment-Emergent Laboratory Abnormalities100.0 percentage of participants
Primary

Pharmacokinetic (PK) Parameter : AUClast of Vesatolimod (VES)

AUClast is defined as an area under the concentration versus time curve from time zero to the last quantifiable concentration. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: The VES PK Analysis Set included participants who received at least 1 dose of VES and had at least 1 nonmissing PK concentration value.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Vesatolimod 2 mgPharmacokinetic (PK) Parameter : AUClast of Vesatolimod (VES)13500 h*pg/mLStandard Deviation 9500
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPharmacokinetic (PK) Parameter : AUClast of Vesatolimod (VES)61900 h*pg/mLStandard Deviation 35400
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPharmacokinetic (PK) Parameter : AUClast of Vesatolimod (VES)14600 h*pg/mLStandard Deviation 11000
Cohort 2: Vesatolimod 6 mgPharmacokinetic (PK) Parameter : AUClast of Vesatolimod (VES)16400 h*pg/mLStandard Deviation 17900
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPharmacokinetic (PK) Parameter : AUClast of Vesatolimod (VES)86300 h*pg/mLStandard Deviation 16000
90% CI: [414, 757]
90% CI: [99.5, 189]
Primary

PK Parameter : %AUCexp of VES

%AUCexp is defined as the percentage of AUC extrapolated between AUClast and AUCinf, calculated as (\[AUCinf-AUClast\]/AUCinf)\*100. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set with available data were analyzed. Data for Cohort 2 Vesatolimod 6mg are not reported due to participant's confidentiality reasons as there was only 1 participant in this cohort.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Vesatolimod 2 mgPK Parameter : %AUCexp of VES14.6 percentage of AUCexpStandard Deviation 6.97
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : %AUCexp of VES6.16 percentage of AUCexpStandard Deviation 3.91
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : %AUCexp of VES14.7 percentage of AUCexpStandard Deviation 6.75
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : %AUCexp of VES1.92 percentage of AUCexpStandard Deviation 0.602
Primary

PK Parameter : AUCinf of VES

AUCinf is defined as an area under the concentration versus time curve extrapolated to infinite time, calculated as AUClast + (Clast/Lambda z). Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set with available data were analyzed. Data for Cohort 2 Vesatolimod 6mg are not reported due to participant's confidentiality reasons as there was only 1 participant in this cohort.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Vesatolimod 2 mgPK Parameter : AUCinf of VES17600 h*pg/mLStandard Deviation 9220
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : AUCinf of VES68000 h*pg/mLStandard Deviation 36600
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : AUCinf of VES17800 h*pg/mLStandard Deviation 11600
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : AUCinf of VES88000 h*pg/mLStandard Deviation 16800
90% CI: [347, 540]
90% CI: [93.5, 150]
Primary

PK Parameter : Clast of VES

Clast is defined as the last observed quantifiable concentration of the drug. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set were analyzed.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Vesatolimod 2 mgPK Parameter : Clast of VES84.2 pg/mLStandard Deviation 19.4
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : Clast of VES103 pg/mLStandard Deviation 42.2
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : Clast of VES74.2 pg/mLStandard Deviation 17.4
Cohort 2: Vesatolimod 6 mgPK Parameter : Clast of VES75.9 pg/mLStandard Deviation 30.5
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : Clast of VES74.3 pg/mLStandard Deviation 27.2
Primary

PK Parameter : CL/F of VES

CL/F is defined as an apparent oral clearance. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set with available data were analyzed. Data for Cohort 2 Vesatolimod 6mg are not reported due to participant's confidentiality reasons as there was only 1 participant in this cohort.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Vesatolimod 2 mgPK Parameter : CL/F of VES156 L/hStandard Deviation 92.9
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : CL/F of VES42.4 L/hStandard Deviation 28.5
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : CL/F of VES176 L/hStandard Deviation 137
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : CL/F of VES69.4 L/hStandard Deviation 13.3
Primary

PK Parameter : Cmax of VES

Cmax is defined as the maximum observed concentration of drug. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set were analyzed.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Vesatolimod 2 mgPK Parameter : Cmax of VES1130 pg/mLStandard Deviation 1020
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : Cmax of VES6930 pg/mLStandard Deviation 4650
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : Cmax of VES1020 pg/mLStandard Deviation 895
Cohort 2: Vesatolimod 6 mgPK Parameter : Cmax of VES944 pg/mLStandard Deviation 928
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : Cmax of VES22200 pg/mLStandard Deviation 7780
90% CI: [525, 1080]
90% CI: [80.3, 172]
Primary

PK Parameter : Lambda z of VES

Lambda z is defined as the terminal elimination rate constant, estimated by linear regression of the terminal elimination phase of the log concentration of drug versus time curve of the drug. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set with available data were analyzed. Data for Cohort 2 Vesatolimod 6mg are not reported due to participant's confidentiality reasons as there was only 1 participant in this cohort.

ArmMeasureValue (MEDIAN)
Cohort 1: Vesatolimod 2 mgPK Parameter : Lambda z of VES0.0381 per hour
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : Lambda z of VES0.0310 per hour
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : Lambda z of VES0.0321 per hour
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : Lambda z of VES0.0442 per hour
Primary

PK Parameter : t1/2 of VES

t1/2 is defined as the terminal elimination half-life. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set with available data were analyzed. Data for Cohort 2 Vesatolimod 6mg are not reported due to participant's confidentiality reasons as there was only 1 participant in this cohort.

ArmMeasureValue (MEDIAN)
Cohort 1: Vesatolimod 2 mgPK Parameter : t1/2 of VES18.4 hours
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : t1/2 of VES22.4 hours
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : t1/2 of VES21.6 hours
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : t1/2 of VES15.8 hours
90% CI: [104, 138]
90% CI: [95.4, 128]
Primary

PK Parameter : Tlast of VES

Tlast is defined as the time (observed time point) of Clast. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set were analyzed.

ArmMeasureValue (MEDIAN)
Cohort 1: Vesatolimod 2 mgPK Parameter : Tlast of VES48.0 hours
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : Tlast of VES72.0 hours
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : Tlast of VES48.0 hours
Cohort 2: Vesatolimod 6 mgPK Parameter : Tlast of VES59.8 hours
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : Tlast of VES72.0 hours
Primary

PK Parameter : Tmax of VES

Tmax is defined as the time (observed time point) of Cmax. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set were analyzed.

ArmMeasureValue (MEDIAN)
Cohort 1: Vesatolimod 2 mgPK Parameter : Tmax of VES3.03 hours
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : Tmax of VES1.52 hours
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : Tmax of VES2.50 hours
Cohort 2: Vesatolimod 6 mgPK Parameter : Tmax of VES5.13 hours
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : Tmax of VES1.28 hours
90% CI: [45.5, 103]
90% CI: [42.5, 101]
Primary

PK Parameter : Vz/F of VES

Vz/F is defined as an apparent volume of distribution of the drug. Cohort 1 Period 1 Day 1: Day 1 from Baseline; Cohort 1 Period 2 Day 2: Up to Day 17 from Baseline; Cohort 1 Period 3 Day 3: Up to Day 44 from Baseline; Cohort 2 Period 1 Day 1: Day 1 from Baseline; Cohort 2 Period 2 Day 6: Up to Day 21 from Baseline.

Time frame: Pre-dose and 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, and 96 hours post-dose for Cohort 1 on Period 1 Day 1, Period 2 Day 2, and Period 3 Day 3; and for Cohort 2 on Period 1 Day 1 and Period 2 Day 6

Population: Participants in the VES PK Analysis Set with available data were analyzed. Data for Cohort 2 Vesatolimod 6mg are not reported due to participant's confidentiality reasons as there was only 1 participant in this cohort.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Vesatolimod 2 mgPK Parameter : Vz/F of VES3480 LStandard Deviation 1530
Cohort 1: Vesatolimod 2 mg + Cobicistat 150 mgPK Parameter : Vz/F of VES1320 LStandard Deviation 1100
Cohort 1: Vesatolimod 2 mg + Voriconazole 200 mgPK Parameter : Vz/F of VES4330 LStandard Deviation 2220
Cohort 2: Vesatolimod 6 mg + Rifabutin 300 mgPK Parameter : Vz/F of VES1560 LStandard Deviation 86.7

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