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Doravirine/Islatravir

Phase 3

HIV Infection | Small molecule | Infectious Disease |Merck & Company, Inc.|Last Updated: Jun 3, 2026

Target and mechanism

ModalitySmall molecule

Also known as MK-8591A, DOR

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials3
Total Enrollment1,956

FDA Designations

No designations recorded

Clinical trial landscape

Doravirine/Islatravir · 11 trials · 3 indications

Phase 3 8Phase 2 1Phase 1 2
NCT05766501A Study of Doravirine/Islatravir (DOR/ISL, MK-8591A) for the Treatment of Human Immunodeficiency Virus 1 (HIV-1) Infection in Participants Who Previously Received DOR/ISL (MK-8591A-054)HIV Infection
ACTIVE NOT_RECRUITING641 Analytics
NCT05705349DOR/ISL in HIV-1 Antiretroviral Treatment-naïve Participants (MK-8591A-053)HIV-1 Infection
ACTIVE NOT_RECRUITING537 Analytics
NCT05631093A Switch to Doravirine/Islatravir (DOR/ISL) in Participants With Human Immunodeficiency Virus Type 1 (HIV-1) Who Are Virologically Suppressed on Antiretroviral Therapy (ART) (MK-8591A-051)HIV-1 Infection
ACTIVE NOT_RECRUITING553 Analytics
NCT05630755A Switch to Doravirine/Islatravir (DOR/ISL) in Participants With Human Immunodeficiency Virus Type 1 (HIV-1) Who Are Virologically Suppressed on Bictegravir/Emtricitabine/Tenofovir Alafenamide (BIC/FTC/TAF) (MK-8591A-052)HIV-1 Infection
ACTIVE NOT_RECRUITING514 Analytics
NCT04776252Open-label, Follow-up of Doravirine/Islatravir (DOR/ISL 100 mg/0.75mg) for Participants With Human Immunodeficiency Virus-1 (HIV-1) Infection (MK-8591A-033)HIV-1 Infection
ACTIVE NOT_RECRUITING2,000 Analytics
NCT04233879Study of Doravirine/Islatravir (DOR/ISL 100 mg/0.75 mg) to Evaluate the Antiretroviral Activity, Safety, and Tolerability in Treatment-Naïve Participants With Human Immunodeficiency Virus Type 1 (HIV-1) Infection (MK-8591A-020)HIV-1 Infection
COMPLETED599 Analytics
NCT04223778Safety and Efficacy of a Switch to Doravirine/Islatravir in Participants With HIV-1 (MK-8591A-017)HIV Infection
COMPLETED672 Analytics
NCT04223791Switch to Doravirine/Islatravir (DOR/ISL) in Human Immunodeficiency Virus 1 (HIV-1) Participants Treated With Bictegravir/Emtricitabine/Tenofovir Alafenamide (BIC/FTC/TAF) (MK-8591A-018)HIV Infection
COMPLETED643 Analytics
PHASE3ACTIVE NOT_RECRUITING
A Study of Doravirine/Islatravir (DOR/ISL, MK-8591A) for the Treatment of Human Immunodeficiency Virus 1 (HIV-1) Infection in Participants Who Previously Received DOR/ISL (MK-8591A-054)
HIV InfectionUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
DOR/ISL in HIV-1 Antiretroviral Treatment-naïve Participants (MK-8591A-053)
HIV-1 InfectionUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Switch to Doravirine/Islatravir (DOR/ISL) in Participants With Human Immunodeficiency Virus Type 1 (HIV-1) Who Are Virologically Suppressed on Antiretroviral Therapy (ART) (MK-8591A-051)
HIV-1 InfectionUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Switch to Doravirine/Islatravir (DOR/ISL) in Participants With Human Immunodeficiency Virus Type 1 (HIV-1) Who Are Virologically Suppressed on Bictegravir/Emtricitabine/Tenofovir Alafenamide (BIC/FTC/TAF) (MK-8591A-052)
HIV-1 InfectionUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Open-label, Follow-up of Doravirine/Islatravir (DOR/ISL 100 mg/0.75mg) for Participants With Human Immunodeficiency Virus-1 (HIV-1) Infection (MK-8591A-033)
HIV-1 InfectionUnlock trial analytics
PHASE3COMPLETED
Study of Doravirine/Islatravir (DOR/ISL 100 mg/0.75 mg) to Evaluate the Antiretroviral Activity, Safety, and Tolerability in Treatment-Naïve Participants With Human Immunodeficiency Virus Type 1 (HIV-1) Infection (MK-8591A-020)
HIV-1 InfectionUnlock trial analytics
PHASE3COMPLETED
Safety and Efficacy of a Switch to Doravirine/Islatravir in Participants With HIV-1 (MK-8591A-017)
HIV InfectionUnlock trial analytics
PHASE3COMPLETED
Switch to Doravirine/Islatravir (DOR/ISL) in Human Immunodeficiency Virus 1 (HIV-1) Participants Treated With Bictegravir/Emtricitabine/Tenofovir Alafenamide (BIC/FTC/TAF) (MK-8591A-018)
HIV InfectionUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants with One or More Adverse Event (AE)
Up to 96 Weeks

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The percentage of participants who experience an AE through Week 96 will be presented.

Percentage of participants who Discontinue Study Intervention Due to an AE
Up to 96 Weeks

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The percentage of participants who discontinue study intervention due to an AE through Week 96 will be presented.

Percentage of participants with human immunodeficiency virus type 1 (HIV-1) ribonucleic acid (RNA) <50 copies/mL at Week 48
Week 48

Plasma HIV-1 RNA quantification will be performed at the central laboratory using a polymerase chain reaction (PCR) assay with a lower limit of detection of \<50 copies/mL.

Percentage of participants experiencing ≥1 adverse event (AE) through Week 48
Up to 48 weeks

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention.

Percentage of participants discontinuing from study treatment due to an AE through Week 48
Up to 48 weeks

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention.

Percentage of Participants With HIV-1 RNA ≥50 Copies/mL at Week 48
Week 48

HIV-1 RNA levels in plasma were measured by polymerase chain reaction (PCR) assay with a reliable lower limit of quantification of \<50 copies/mL. The percentage of participants with HIV-1 RNA ≥50 copies/mL at Week 48 is presented using the FDA Snapshot missing data approach.

Percentage of Participants With One or More Adverse Events (AEs) at Week 48
Up to Week 48

An AE is defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The percentage of participants who experienced at least one AE from Day 1 up to Week 48 are reported.

Percentage of Participants With an AE Leading to Discontinuation of Study Intervention at Week 48
Up to Week 48

An AE is defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The percentage of participants who experienced at least one AE leading to discontinuation of study intervention from Day 1 up to Week 48 are reported.

Percentage of Participants With Human Immunodeficiency Virus Type 1 (HIV-1) Ribonucleic Acid (RNA) ≥50 Copies/mL at Week 48
Week 48

HIV-1 RNA levels in blood samples taken at each visit were measured with a reliable lower limit of quantification of \<50 copies/mL. The percentage of participants with HIV-1 RNA ≥50 copies/mL at Week 48 is presented using the FDA Snapshot missing data approach.

Percentage of Participants Who Experience Adverse Events (AEs) Through Week 48
Up to Week 48

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The percentage of participants who experienced at least one AE is reported.

Percentage of Participants Who Discontinue Study Intervention Due to AEs Through Week 48
Up to Week 48

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The percentage of participants who discontinued study intervention due to an AE is reported.

Participants with serious adverse events (SAEs)
Up to Week 198

Percentage of participants with serious adverse events (SAEs)

Participants who discontinued due to an adverse event (AE)
Up to Week 192

Percentage of participants who discontinued study treatment due to an AE.

Percentage of Participants With Human Immunodeficiency Virus (HIV)-1 Ribonucleic Acid (RNA) <50 Copies/mL at Week 48
Week 48

The Abbott RealTime polymerase chain reaction (PCR) assay with a reliable lower limit of quantification of 40 copies/mL was used to measure the HIV-1 RNA level in blood samples obtained at each visit. The percentage of participants with HIV-1 RNA \<50 copies/mL at Week 48 was presented using the Food and Drug Administration (FDA) Snapshot missing data approach. The final analysis for this outcome is presented here.

Percentage of Participants Who Experienced an Adverse Event (AE) up to Week 48
Up to approximately 48 weeks

An AE was any untoward medical occurrence in a study participant administered a study drug, which does not necessarily have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of the study drug whether or not it is considered related to the study drug. The percentage of participants who experienced at least one AE up to Week 48 was reported. The final analysis for this outcome is presented here.

Percentage of Participants Who Discontinued Study Treatment Due to an AE up to Week 48
Up to approximately 48 weeks

An AE was any untoward medical occurrence in a study participant administered a study drug, which does not necessarily have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of the study drug whether or not it is considered related to the study drug. The percentage of participants who discontinued study treatment due to an AE up to Week 48 were reported. The final analysis for this outcome is presented here.

Percentage of Participants With Human Immunodeficiency Virus (HIV)-1 Ribonucleic Acid (RNA) ≥50 Copies/mL at Week 48
Week 48

HIV-1 RNA levels in blood samples taken at each visit were measured by the Abbott RealTime polymerase chain reaction (PCR) assay with a reliable lower limit of quantification of 40 copies/mL. The percentage of participants with HIV-1 RNA ≥50 copies/mL at Week 48 is presented using the FDA Snapshot missing data approach.

Percentage of Participants With One or More Adverse Events (AEs) up to Week 48
Up to ~48 Weeks

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The percentage of participants who experienced at least one AE was reported.

Percentage of Participants Who Discontinued Study Intervention Due to an AE up to Week 48
Up to ~48 Weeks

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The percentage of participants who discontinued study intervention due to an AE was reported.

Percentage of Participants With Human Immunodeficiency Virus 1 Ribonucleic Acid (HIV-1 RNA) ≥50 Copies/mL at Week 48
Week 48

The Abbott RealTime polymerase chain reaction (PCR) assay with a reliable lower limit of quantification of 40 copies/mL was used to measure the HIV-1 RNA level in blood samples obtained at each visit. Per protocol, the primary outcome measure, the percentage of participants with HIV-1 RNA ≥50 copies/mL at Week 48, is presented using the Food and Drug Administration (FDA) Snapshot missing data approach. The percentage values were rounded to the nearest tenth digit.

Area Under the Plasma Drug Concentration-time Curve From 0 to 24 Hours Post-dose (AUC0-24) of Islatravir (ISL)
Pre-dose, and 0.5, 1, 2, 4, 8, 12, and 24 hours post-dose on Day 28

The AUC0-24 of ISL in plasma was determined at steady state.

Maximum Plasma Concentration (Cmax) of ISL
Pre-dose, and 0.5, 1, 2, 4, 8, 12, and 24 hours post-dose on Day 28

The Cmax of ISL in plasma was determined at steady state.

Time to Reach Maximum Plasma Concentration (Tmax) of ISL
Pre-dose, and 0.5, 1, 2, 4, 8, 12, and 24 hours post-dose on Day 28

The Tmax of ISL in plasma was determined at steady state.

Apparent Plasma Terminal Half-life (t½) of ISL
Pre-dose, and 0.5, 1, 2, 4, 8, 12, and 24 hours post-dose on Day 28

The t½ of ISL in plasma was determined at steady state.

Apparent Total Clearance From Plasma (CL/F) of ISL
Pre-dose, and 0.5, 1, 2, 4, 8, 12, and 24 hours post-dose on Day 28

The CL/F of ISL from plasma was determined at steady state.

Apparent Volume of Distribution During Terminal Phase (Vz/F) of ISL
Pre-dose, and 0.5, 1, 2, 4, 8, 12, and 24 hours post-dose on Day 28

The Vz/F of ISL was determined at steady state.

AUC0-last of ISL-triphosphate (ISL-TP) in Peripheral Blood Mononuclear Cells (PBMCs)
Pre-dose, and 4 and 24 hours post-dose on Day 28

The AUC0-24 of ISL-TP in PBMCs was determined at steady state.

Cmax of ISL-TP in PBMCs
Pre-dose, and 4, and 24 hours post-dose on Day 28

The Cmax of ISL-TP in PBMCs was determined at steady state.

C24 of ISL-TP in PBMCs
24 hours post-dose on Day 28

The C24 of ISL-TP in PBMCs was determined at steady state.

Number of Participants Experiencing ≥1 Adverse Event (AE)
Up to 24 weeks

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention.

Number of Participants Discontinuing From Study Treatment Due to an AE
Up to 24 weeks

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention.

Cumulative Amount of DOR Excreted in Breast Milk From 0 to 24 Hours (Ae0-24hrs)
Predose and at designated timepoints up to 24 hours postdose

Breast milk samples will be collected to determine the Ae0-24hrs after administration of DOR.

Body Weight Normalized Infant Theoretical Dose of DOR
Predose and at designated timepoints up to 24 hours postdose

Breast milk samples will be collected to calculate the theoretical daily (24 hour) infant dose of DOR as normalized by participant-reported infant body weight.

Relative Infant Theoretical Dose of DOR
Predose and at designated timepoints up to 24 hours postdose

Breast milk samples will be collected to calculate the theoretical daily (24 hour) infant dose of DOR relative to the maternal dose.

Cumulative Amount of Total ISL Excreted in Breast Milk From 0 to 24 Hours (Ae0-24hrs)
Predose and at designated timepoints up to 24 hours postdose

Breast milk samples will be collected to determine the Ae0-24hrs after administration of total ISL.

Body Weight Normalized Infant Theoretical Dose of ISL
Predose and at designated timepoints up to 24 hours postdose

Breast milk samples will be collected to calculate the theoretical daily (24 hour) infant dose of ISL as normalized by participant-reported infant body weight.

Relative Infant Theoretical Dose of ISL
Predose and at designated timepoints up to 24 hours postdose

Breast milk samples will be collected to calculate the theoretical daily (24 hour) infant dose of ISL relative to the maternal dose.

Area under the curve from time 0-infinity (AUC0-inf) of DOR
At designated time points up to ~30 days

AUC0-inf is a measure of plasma drug concentration from time 0 to infinity and is estimated as the area under the plot of plasma concentration against time 0 to infinity after drug administration. Blood samples collected at designated time points will be used to determine the AUC0-inf of DOR.

Area under the curve from time 0 to last measurable concentration (AUC0-last) of Doravine
At designated time points up to ~30 days

AUC0-last is defined as the area under the concentration-time curve from time 0 to time of last measurable concentration of DOR. Blood will be collected at designated time points to determine the AUC0-last of DOR.

Maximum plasma concentration (Cmax) of doravine
At designated time points up to ~30 days

Cmax is the maximum concentration of the drug observed in plasma. Blood samples collected at designated time points will be used to determine Cmax of DOR.

Plasma concentration at 24 hours postdose (C24) of DOR
At designated time points up to ~24 hours postdose

C24 is the concentration at 24 hours postdose of the drug observed in plasma. Blood samples collected at 24 postdose will be used to determine C24 of DOR.

AUC0-inf of ISL
At designated time points up to ~30 days

AUC0-inf is a measure of plasma drug concentration and time 0 to infinity and is estimated as the area under the plot of plasma concentration against time 0 to infinity after drug administration. Blood samples collected at designated time points will be used to determine the AUC0-inf of ISL.

AUC0-last of ISL
At designated time points up to ~30 days

AUC0-last is defined as the area under the concentration-time curve from time zero to time of last measurable concentration of ISL. Blood will be collected at designated time points to determine the AUC0-last of ISL.

Cmax of ISL
At designated time points up to ~30 days

Cmax is the maximum concentration of the drug observed in plasma. Blood samples collected at designated time points will be used to determine Cmax of ISL.

Secondary Endpoints

Percentage of Participants with HIV-1 Ribonucleic Acid (RNA) ≥50 copies/mL at Week 96
Week 96
Percentage of Participants with HIV-1 RNA <50 copies/mL at Week 96
Week 96
Percentage of Participants with HIV-1 RNA <200 copies/mL at Week 96
Week 96
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
DOR/ISLEXPERIMENTALParticipants will receive fixed dose combination (FDC) tablet of DOR/ISL (100 mg/0.25 mg) taken once daily (QD) orally from Day 1 to Week 96. After Week 96, eligible participants may continue on DOR/ISL until week 240 or until DOR/ISL becomes commercially accessible, whichever comes first.
BIC/FTC/TAFACTIVE_COMPARATORParticipants take BIC/FTC/TAF and placebo to DOR/ISL qd for 144 weeks.
ART + DOR/ISLACTIVE_COMPARATORParticipants with HIV-1 that has been virologically suppressed for ≥3 consecutive months who were previously treated with continuous baseline ART received standard of care (SOC) ART for 48 weeks, followed by treatment with DOR/ISL as a FDC of 100 mg DOR/0.25 mg ISL orally qd until Week 144. At Week 144, participants who consent to enter the optional study extension will continue to receive DOR/ISL qd (100 mg/0.25 mg) for an additional 96 weeks or until it is commercially accessible (whichever comes first).
DOR/ISL and Placebo to BIC/FTC/TAFEXPERIMENTALParticipants will receive DOR/ISL 100 mg/0.25 mg and Placebo to BIC/FTC/TAF once daily (QD) orally from day 1 to week 144. After week 144, eligible participants may continue on DOR/ISL and continue study treatment until week 240 or to when DOR/ISL becomes commercially accessible (whichever comes first).
BIC/FTC/TAF and Placebo to DOR/ISLACTIVE_COMPARATORParticipants will receive BIC/FTC/TAF 50 mg/200 mg/25 mg and Placebo to DOR/ISL once daily (QD) orally from day 1 to week 144. After week 144, eligible participants may switch to DOR/ISL and continue study treatment until week 240 or to when DOR/ISL becomes commercially accessible (whichever comes first).
MK-8591AEXPERIMENTALFixed dose combination (FDC) tablet of 100 mg doravirine, 0.75 mg islatravir taken orally, once daily for up to 192 weeks.
Group 1: doravirine/islatravir (DOR/ISL)EXPERIMENTALTreatment-naïve participants living with human immunodeficiency virus-1 (HIV-1) that had not received ≤10 days of prior antiretroviral therapy received blinded fixed dose combination (FDC) Doravirine/Islatravir (DOR/ISL) (100 mg doravirine \[DOR\]/0.75 mg islatravir \[ISL\]) and placebo to Bictegravir/Tenofovir Alafenamide/Emtricitabine (BIC/FTC/TAF) once daily (QD) from Day 1 to Week 96, and open-label DOR/ISL up to Week 144. At Week 144, participants who consent to enter the optional open-label study extension continued to receive open-label QD FDC of DOR/ISL (100 mg/0.75 mg) for an additional 24 weeks, up to Week 168.
Group 2: bictegravir/emtricitabine/tenofovir alafenamide (BIC/FTC/TAF)ACTIVE_COMPARATORTreatment-naïve participants living with HIV-1 that had not received ≤10 days of prior antiretroviral therapy received blinded BIC/FTC/TAF (50 mg bictegravir \[BIC\], 200 mg emtricitabine \[FTC\], 25 mg tenofovir alafenamide \[TAF\]) and placebo to FDC DOR/ISL QD from Day 1 to Week 96, and open-label BIC/FTC/TAF up to Week 144. At Week 144, participants who consent to enter the optional open-label study extension continued to receive QD BIC/FTC/TAF (50 mg/200 mg/25 mg) for an additional 24 weeks, up to Week 168.
Group 2: Baseline Antiretroviral Therapy (ART)ACTIVE_COMPARATORParticipants received continuous baseline ART for 48 weeks. Continuing participants delayed switch over from baseline ART to DOR/ISL, fixed dose combination of 100 mg DOR/0.75 mg ISL orally once daily, from Week 48 to Week 96, a total DOR/ISL treatment duration of 48 Weeks.
MK-8591A Sequence 1AEXPERIMENTALParticipants will receive Doravine/Islatravir (DOR/ISL) fixed-dose combination (FDC) tablet under fasting conditions followed by a DOR/ISL FDC tablet under fed conditions followed by a single dose Doravine tablet and a single dose Islatravir capsule under fasting conditions.
MK-8591A Sequence 2AEXPERIMENTALParticipants will receive DOR/ISL FDC tablet under fasting conditions followed by a single dose DOR tablet and a single dose ISL capsule under fasting conditions followed by DOR/ISL FDC tablet under fed conditions.
MK-8591A Sequence 1BEXPERIMENTALParticipants will receive DOR/ISL FDC tablet under fed conditions followed by a DOR/ISL FDC tablet under fasting conditions followed by a single dose DOR tablet and a single dose ISL capsule under fasting conditions.
MK-8591A Sequence 2BEXPERIMENTALParticipants will receive DOR/ISL FDC tablet under fed conditions followed by a single dose DOR tablet and a single dose ISL capsule under fasting condition followed by a DOR/ISL FDC tablet under fasting conditions.
MK-8591A Sequence 1CEXPERIMENTALParticipants will receive a single dose DOR tablet and a single dose ISL capsule under fasting conditions followed by DOR/ISL FDC tablet under fasting conditions followed by followed by a DOR/ISL FDC tablet under fed conditions.
MK-8591A Sequence 2CEXPERIMENTALParticipants will receive a single dose DOR tablet and a single dose ISL capsule under fasting conditions followed by DOR/ISL FDC tablet under fed conditions followed by followed by a DOR/ISL FDC tablet under fasting conditions.

Interventions

NameTypeDescription
DOR/ISLDRUGFDC tablet of 100 mg doravirine (DOR)/0.25 mg islatravir (ISL) taken once daily
BIC/FTC/TAFDRUGFixed dose combination tablet containing BIC/FTC/TAF 50 mg/200 mg/25 mg taken by mouth.
Placebo to DOR/ISLDRUGPlacebo tablet matched to DOR/ISL tablet taken by mouth.
Placebo to BIC/FTC/TAFDRUGPlacebo tablet matched to BIC/FTC/TAF tablet taken by mouth.
ARTDRUGStandard of care ART, per approved product list, taken orally
MK-8591ADRUGFDC tablet of 100 mg doravirine, 0.75 mg islatravir taken orally, once daily for up to 192 weeks
Placebo to FDC DOR/ISLDRUGPlacebo to FDC DOR/ISL in a single tablet taken orally, once daily
IslatravirDRUGOral capsule
DoravineDRUGOral tablet
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites95

Inclusion Criteria: * Is currently receiving doravirine/islatravir (DOR/ISL) adult fixed dose combination (FDC) tablet in Merck Sharp \& Dohme (MSD)-sponsored clinical studies (MK-8591A-018, -020, and -033 \[except for heavily treatment-experienced (HTE) participants\]). Exclusion Criteria: * Has...

Countries:United StatesArgentinaAustraliaCanadaChileColombiaIsraelJapanNew ZealandPuerto RicoRussiaSouth AfricaSwitzerlandTaiwanUnited KingdomDominican RepublicFranceGermanyGuatemalaKenyaMalaysiaMexicoSpainThailandTurkey (Türkiye)ItalyPolandAustriaFinland
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Recent Changes (Last 90 Days)

MEDIUMJul 4, 2026NCT04233879TRIAL_REMOVED: changed
MEDIUMJul 4, 2026NCT04233879TRIAL_REMOVED: changed
MEDIUMJul 4, 2026NCT04233879TRIAL_REMOVED: changed