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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)

A Phase 3, Randomized, Active-Controlled, Double-Blind Clinical Study to Evaluate a Switch to Doravirine/Islatravir (DOR/ISL) Once-Daily in Participants With HIV-1 Virologically Suppressed on Bictegravir/Emtricitabine/Tenofovir Alafenamide (BIC/FTC/TAF)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04223791
Enrollment
643
Registered
2020-01-10
Start date
2020-02-18
Completion date
2025-02-27
Last updated
2026-03-27

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

Conditions

HIV Infection

Brief summary

This study will evaluate the safety and efficacy of a switch to Doravirine/Islatravir (DOR/ISL) (MK-8591A) (a fixed dose combination of doravirine 100 mg and islatravir 0.75 mg) in participants living with human immunodeficiency virus-1 (HIV-1) virologically suppressed on a regimen of bictegravir/emtricitabine/tenofovir alafenamide (BIC/FTC/TAF). The primary hypothesis is that a switch to DOR/ISL (MK-8591A) will be non-inferior to continued treatment with BIC/FTC/TAF as assessed by the proportion of participants with HIV-1 ribonucleic acid (RNA) ≥50 copies/mL at Week 48. Participants who benefit from their assigned intervention (as determined by investigator) will be able to continue treatment through a 24-week study extension.

Interventions

100 mg DOR/ 0.75 ISL FDC single tablet taken orally once daily

50 mg BIC, 200 mg FTC, and 25 mg TAF combined in a single tablet, taken orally once daily

Placebo to BIC/FTC/TAF in a single tablet taken orally, once daily

DRUGPlacebo to FDC DOR/ISL

Placebo to FDC DOR/ISL in a single tablet taken orally, once daily

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

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

Inclusion criteria

* Is HIV-1 positive with plasma Human Immunodeficiency Virus 1 (HIV-1) RNA \<50 copies/mL at screening. * Has been receiving bictegravir/emtricitabine/tenofovir alafenamide (BIC/FTC/TAF) therapy with documented viral suppression (HIV-1 RNA \<50 copies/mL) for ≥3 months prior to signing informed consent and has no history of prior virologic treatment failure on any past or current regimen. * Females are eligible to participate if not pregnant or breastfeeding, and at least one of the following conditions applies: Is not a woman of childbearing potential (WOCBP); is a WOCBP and using an acceptable contraceptive method, or be abstinent from heterosexual intercourse as their preferred and usual lifestyle; a WOCBP must have a negative highly sensitive pregnancy test (\[urine or serum\] as required by local regulations) within 24 hours before the first dose of study intervention; if a urine test cannot be confirmed as negative (e.g. an ambiguous result), a serum pregnancy test is required. In such cases, the participant must be excluded from participation if the serum pregnancy result is positive.

Exclusion criteria

* Has HIV-2 infection. * Has an active diagnosis of hepatitis due to any cause, including active Hepatitis B Virus (HBV) co-infection. * Has a history of malignancy ≤5 years prior to signing informed consent except for adequately treated basal cell or squamous cell skin cancer, in situ cervical cancer, or cutaneous Kaposi's sarcoma. * Is taking or is anticipated to require systemic immunosuppressive therapy, immune modulators, or any prohibited therapies. * Is currently participating in or has participated in a clinical study with an investigational compound or device from 45 days prior to Day 1 through the study treatment period. * Has a documented or known virologic resistance to doravirine (DOR). * expects to conceive or donate eggs at any time during the study.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Human Immunodeficiency Virus 1 Ribonucleic Acid (HIV-1 RNA) ≥50 Copies/mL at Week 48Week 48The 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.
Percentage of Participants With One or More Adverse Events (AEs) up to Week 48Up to 48 weeksAn 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 experienced an AE up to week 48 is presented.
Percentage of Participants Who Discontinued Study Intervention Due to an AE up to Week 48Up to 48 weeksAn 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 discontinued study intervention due to an AE up to week 48 is presented.

Secondary

MeasureTime frameDescription
Percentage of Participants With HIV-1 RNA ≥50 Copies/mL at Week 96Week 96The Abbott RealTime 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 secondary outcome measure, percentage of participants with HIV-1 RNA ≥50 copies/mL at Week 96, is presented using the Food and Drug Administration (FDA) Snapshot missing data approach. The percentage values were rounded to the nearest tenth digit.
Percentage of Participants With HIV-1 RNA ≥50 Copies/mL at Week 144Week 144The Abbott RealTime 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 secondary outcome measure, percentage of participants with HIV-1 RNA ≥50 copies/mL at Week 144, is presented using the FDA snapshot missing data approach. The percentage values were rounded to the nearest tenth digit.
Percentage of Participants With HIV-1 RNA <50 Copies/mL at Week 48Week 48The Abbott RealTime 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 secondary outcome measure, the percentage of participants with HIV-1 RNA \<50 copies/mL at Week 48, is presented using the FDA snapshot missing data approach. The percentage values were rounded to the nearest tenth digit.
Percentage of Participants With HIV-1 RNA <40 Copies/mL at Week 48Week 48The Abbott RealTime 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 secondary outcome measure, the percentage of participants with HIV-1 RNA \<40 copies/mL at Week 48, is presented using the FDA snapshot missing data approach.
Percentage of Participants With HIV-1 RNA <50 Copies/mL at Week 96Week 96The Abbott RealTime 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 secondary outcome measure, the percentage of participants with HIV-1 RNA \<50 copies/mL at Week 96, is presented using the FDA snapshot missing data approach. The percentage values were rounded to the nearest tenth digit.
Percentage of Participants With HIV-1 RNA <40 Copies/mL at Week 96Week 96The Abbott RealTime 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 secondary outcome measure, the percentage of participants with HIV-1 RNA \<40 copies/mL at Week 96, is presented using the FDA snapshot missing data approach.
Percentage of Participants With HIV-1 RNA <50 Copies/mL at Week 144Week 144The Abbott RealTime 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 secondary outcome measure, the percentage of participants with HIV-1 RNA \<50 copies/mL at Week 144 is presented using the FDA snapshot missing data approach. The percentage values were rounded to the nearest tenth digit.
Percentage of Participants With HIV-1 RNA <40 Copies/mL at Week 144Week 144The Abbott RealTime 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 secondary outcome measure, percentage of participants with HIV-1 RNA \<40 copies/mL at Week 144, is presented using the FDA snapshot missing data approach.
Mean Change From Baseline in Cluster of Differentiation-positive (CD4+) T-cell Count at Week 48Baseline and Week 48Plasma CD4+ T-cell count was measured in cells/mm\^3 for baseline and 48 weeks by a central laboratory. Baseline measurement of CD4+ T-cell count is defined as the day 1 value for each participant. The mean change from baseline in CD4+ T-cell count at week 48 using the data as observed (DAO) approach is presented. A negative value indicates a mean decrease in CD4+ T-cell count from baseline and a positive value indicates a mean increase in CD4+ T-cell count from baseline.
Mean Change From Baseline in CD4+ T-cell Count at Week 96Baseline and Week 96Plasma CD4+ T-cell count was measured in cells/mm\^3 for baseline and 96 weeks by a central laboratory. Baseline measurement of CD4+ T-cell count is defined as the day 1 value for each participant. The mean change from baseline in CD4+ T-cell count at week 96 using the data as observed (DAO) approach is presented. A negative value indicates a mean decrease in CD4+ T-cell count from baseline and a positive value indicates a mean increase in CD4+ T-cell count from baseline.
Mean Change From Baseline in CD4+ T-cell Count at Week 144Baseline and Week 144Plasma CD4+ T-cell count was measured in cells/mm\^3 for baseline and 144 weeks by a central laboratory. Baseline measurement of CD4+ T-cell count is defined as the day 1 value for each participant. The mean change from baseline in CD4+ T-cell count at week 144 using the data as observed (DAO) approach is presented. A negative value indicates a mean decrease in CD4+ T-cell count from baseline and a positive value indicates a mean increase in CD4+ T-cell count from baseline.
Number of Participants With Viral Drug Resistance-associated Substitutions at Week 48Week 48Viral drug resistance is defined as participants with confirmed HIV-1 RNA ≥400 copies/mL having genotypic or phenotypic evidence of resistance to the study drug administered. The number of participants who demonstrate drug resistance is presented.
Number of Participants With Evidence of Viral Drug Resistance-associated Substitutions at Week 96Week 96Viral drug resistance is defined as participants with confirmed HIV-1 RNA ≥400 copies/mL and/or genotypic or phenotypic analysis of data showing evidence of resistance to the study drug administered. The number of participants who demonstrate drug resistance at week 96 is presented.
Number of Participants With Evidence of Viral Drug Resistance-associated Substitutions at Week 144Week 144Viral drug resistance is defined as participants with confirmed HIV-1 RNA ≥400 copies/mL and/or genotypic or phenotypic analysis of data showing evidence of resistance to the study drug administered. The number of participants who demonstrate drug resistance at week 144 is presented.
Change From Baseline in Body Weight at Week 48Baseline and Week 48Body weight was measured and recorded at baseline and week 48. Participants removed their shoes and wore a single layer of clothing at each measurement. The mean change from baseline in body weight at week 48 is presented.
Change From Baseline in Body Weight at Week 96Baseline and Week 96Body weight was measured and recorded at baseline and week 96. Participants removed their shoes and wore a single layer of clothing at each measurement. The mean change from baseline in body weight at week 96 is presented.
Change From Baseline in Body Weight at Week 144Baseline and Week 144Body weight was measured and recorded at baseline and week 144. Participants removed their shoes and wore a single layer of clothing at each measurement. The mean change from baseline in body weight at week 144 is presented.
Percentage of Participants With One or More AEsUp to approximately 55 monthsAn 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 experienced at least one or more AEs is presented. Per protocol, pregnancy-related AEs collected for enrolled participants are reported separately and are presented in the AE module.
Percentage of Participants Who Discontinued Study Intervention Due to an AEUp to approximately 40 monthsAn 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 discontinued study intervention due to an AE is presented. Per protocol, pregnancy-related AEs collected for enrolled participants are reported separately and are presented in the AE module.

Countries

Australia, Austria, Canada, Finland, France, Germany, Italy, Japan, Puerto Rico, Spain, United States

Contacts

STUDY_DIRECTORMedical Director

Merck Sharp & Dohme LLC

Participant flow

Recruitment details

Adult participants living with human immunodeficiency virus-1 (HIV-1) who have been virologically suppressed for ≥3 months and receiving bictegravir/emtricitabine/tenofovir alafenamide (BIC/FTC/TAF) with no history of treatment failure were enrolled.

Participants by arm

ArmCount
DOR/ISL
An FDC of 100 mg DOR/0.75 mg ISL for 144 weeks; and placebo to BIC/FTC/TAF for 96 weeks.
322
BIC/FTC/TAF
50 mg BIC, 200 mg FTC, 25 mg TAF for 144 weeks, and placebo to FDC DOR/ISL for 96 weeks. Participants will be offered the option to receive open-label FDC DOR/ISL from Week 144 to Week 156.
321
Total643

Baseline characteristics

CharacteristicBIC/FTC/TAFTotalDOR/ISL
Age, Continuous48.0 Years
STANDARD_DEVIATION 11.8
47.8 Years
STANDARD_DEVIATION 12.2
47.6 Years
STANDARD_DEVIATION 12.6
Ethnicity (NIH/OMB)
Hispanic or Latino
55 Participants119 Participants64 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
261 Participants517 Participants256 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
5 Participants7 Participants2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
2 Participants5 Participants3 Participants
Race (NIH/OMB)
Asian
13 Participants27 Participants14 Participants
Race (NIH/OMB)
Black or African American
56 Participants115 Participants59 Participants
Race (NIH/OMB)
More than one race
7 Participants12 Participants5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants2 Participants2 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants3 Participants0 Participants
Race (NIH/OMB)
White
240 Participants479 Participants239 Participants
Sex: Female, Male
Female
78 Participants183 Participants105 Participants
Sex: Female, Male
Male
243 Participants460 Participants217 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 / 3222 / 3050 / 2660 / 3210 / 3010 / 2810 / 1320 / 1310 / 1960 / 152
other
Total, other adverse events
85 / 322104 / 305151 / 26693 / 31986 / 301101 / 28134 / 13213 / 13114 / 1960 / 152
serious
Total, serious adverse events
14 / 32219 / 3057 / 26616 / 31911 / 3016 / 2810 / 1321 / 1313 / 1960 / 152

Outcome results

Primary

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

The Abbott RealTime 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 is presented using the FDA Snapshot missing data approach.

Time frame: Week 48

Population: All participants who received ≥1 dose of study intervention. Participants were included in the treatment group to which they were randomized.

ArmMeasureValue (NUMBER)
DOR/ISLParticipants With Human Immunodeficiency Virus 1 Ribonucleic Acid (HIV-1 RNA) ≥50 Copies/mL at Week 480.6 Percentage of Participants
BIC/FTC/TAFParticipants With Human Immunodeficiency Virus 1 Ribonucleic Acid (HIV-1 RNA) ≥50 Copies/mL at Week 480.3 Percentage of Participants
p-value: <0.00195% CI: [-1.19, 1.96]Unstratified Miettinen and Nurminen
Primary

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

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 discontinued study intervention due to an AE up to week 48 is presented.

Time frame: Up to 48 weeks

Population: All randomized participants who received ≥1 dose of study intervention. Participants were included in the treatment group corresponding to the study intervention received.

ArmMeasureValue (NUMBER)
DOR/ISLPercentage of Participants Who Discontinued Study Intervention Due to an AE up to Week 482.5 Percentage of Participants
BIC/FTC/TAFPercentage of Participants Who Discontinued Study Intervention Due to an AE up to Week 482.5 Percentage of Participants
95% CI: [-2.7, 2.6]
Primary

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

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 experienced an AE up to week 48 is presented.

Time frame: Up to 48 weeks

Population: All randomized participants who received ≥1 dose of study intervention. Participants were included in the treatment group corresponding to the study intervention received.

ArmMeasureValue (NUMBER)
DOR/ISLPercentage of Participants With One or More Adverse Events (AEs) up to Week 4871.1 Percentage of Participants
BIC/FTC/TAFPercentage of Participants With One or More Adverse Events (AEs) up to Week 4874.6 Percentage of Participants
95% CI: [-10.4, 3.4]
Secondary

Change From Baseline in Body Weight at Week 144

Body weight was measured and recorded at baseline and week 144. Participants removed their shoes and wore a single layer of clothing at each measurement.

Time frame: Baseline and Week 144

Secondary

Change From Baseline in Body Weight at Week 48

Body weight was measured and recorded at baseline and week 48. Participants removed their shoes and wore a single layer of clothing at each measurement. The mean change from baseline in body weight at week 48 is presented.

Time frame: Baseline and Week 48

Population: Participants who received ≥1 dose of study intervention and were included in the treatment group corresponding to the study intervention received. The analysis population included participants with baseline and at least one postbaseline test result in the specified analysis window.

ArmMeasureValue (MEAN)Dispersion
DOR/ISLChange From Baseline in Body Weight at Week 480.23 kilogram (kg)Standard Deviation 4.19
BIC/FTC/TAFChange From Baseline in Body Weight at Week 480.55 kilogram (kg)Standard Deviation 4.4
p-value: 0.39295% CI: [-0.99, 0.39]ANCOVA
Secondary

Change From Baseline in Body Weight at Week 96

Body weight was measured and recorded at baseline and week 96. Participants removed their shoes and wore a single layer of clothing at each measurement.

Time frame: Baseline and Week 96

Secondary

Change From Baseline in CD4+ T-cell Count at Week 144

Blood samples were used to measure CD4+ T-cell count. Baseline measurement of CD4+ T-cell count is defined as the day 1 value for each participant. Change from baseline in CD4+ T-cell count at week 144 using the data as observed (DAO) approach is presented. A negative value indicates a mean decrease in CD4+ T-cell count from baseline and a positive value indicates a mean increase in CD4+ T-cell count from baseline.

Time frame: Baseline and Week 144

Secondary

Change From Baseline in CD4+ T-cell Count at Week 96

Blood samples were used to measure CD4+ T-cell count. Baseline measurement of CD4+ T-cell count is defined as the day 1 value for each participant. Change from baseline in CD4+ T-cell count at week 96 using the data as observed (DAO) approach is presented. A negative value indicates a mean decrease in CD4+ T-cell count from baseline and a positive value indicates a mean increase in CD4+ T-cell count from baseline.

Time frame: Baseline and Week 96

Secondary

Change From Baseline in Cluster of Differentiation-positive (CD4+) T-cell Count at Week 48

Blood samples were used to measure CD4+ T-cell count. Baseline measurement of CD4+ T-cell count is defined as the day 1 value for each participant. Change from baseline in CD4+ T-cell count at week 48 using the data as observed (DAO) approach is presented. A negative value indicates a mean decrease in CD4+ T-cell count from baseline and a positive value indicates a mean increase in CD4+ T-cell count from baseline.

Time frame: Baseline and Week 48

Population: All participants who received ≥1 dose of study intervention and who had baseline data for CD4+ T-cell count. Participants were included in the treatment group to which they were randomized.

ArmMeasureValue (MEAN)
DOR/ISLChange From Baseline in Cluster of Differentiation-positive (CD4+) T-cell Count at Week 48-19.66 cells/mm^3
BIC/FTC/TAFChange From Baseline in Cluster of Differentiation-positive (CD4+) T-cell Count at Week 4840.51 cells/mm^3
Secondary

Participants With Evidence of Viral Drug Resistance-associated Substitutions at Week 144

Viral drug resistance is defined as participants with confirmed HIV-1 RNA ≥400 copies/mL and/or genotypic or phenotypic analysis of data showing evidence of resistance to the study drug administered. The number of participants who demonstrate drug resistance is presented.

Time frame: Week 144

Secondary

Participants With Evidence of Viral Drug Resistance-associated Substitutions at Week 96

Viral drug resistance is defined as participants with confirmed HIV-1 RNA ≥400 copies/mL and/or genotypic or phenotypic analysis of data showing evidence of resistance to the study drug administered. The number of participants who demonstrate drug resistance is presented.

Time frame: Week 96

Secondary

Participants With HIV-1 RNA <40 or <50 Copies/mL at Week 144

The Abbott RealTime 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 \<40 or \<50 copies/mL at Week 144 is presented.

Time frame: Week 144

Secondary

Participants With HIV-1 RNA <40 or <50 Copies/mL at Week 96

The Abbott RealTime 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 \<40 or \<50 copies/mL at Week 96 is presented.

Time frame: Week 96

Secondary

Participants With HIV-1 RNA ≥50 Copies/mL at Week 144

The Abbott RealTime 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 144 is presented.

Time frame: Week 144

Secondary

Participants With HIV-1 RNA ≥50 Copies/mL at Week 96

The Abbott RealTime 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 96 is presented.

Time frame: Week 96

Secondary

Participants With Viral Drug Resistance-associated Substitutions at Week 48

Viral drug resistance is defined as participants with confirmed HIV-1 RNA ≥400 copies/mL having genotypic or phenotypic evidence of resistance to the study drug administered. The number of participants who demonstrate drug resistance is presented.

Time frame: Week 48

Population: Participants who met the definition of confirmed virologic rebound (two consecutive \[2 to 4 weeks apart\] occurrences of HIV-1 RNA ≥200 copies/mL) at any time during the study or who discontinued study intervention for another reason and have HIV-1 RNA ≥200 copies/mL at the time of discontinuation. Participants for whom available genotypic or phenotypic data showed evidence of resistance, irrespective of viral load, were also included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
DOR/ISLParticipants With Viral Drug Resistance-associated Substitutions at Week 480 Participants
Secondary

Percentage of Participants Who Discontinued Study Intervention Due to an AE up to Week 144

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.

Time frame: Up to Week 144

Secondary

Percentage of Participants With HIV-1 RNA <40 Copies/mL at Week 48

The Abbott RealTime 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 \<40 copies/mL at Week 48 is presented using the FDA snapshot missing data approach.

Time frame: Week 48

Population: All participants who received ≥1 dose of study intervention. Participants were included in the treatment group to which they were randomized.

ArmMeasureValue (NUMBER)
DOR/ISLPercentage of Participants With HIV-1 RNA <40 Copies/mL at Week 4893.2 Percentage of Participants
BIC/FTC/TAFPercentage of Participants With HIV-1 RNA <40 Copies/mL at Week 4894.0 Percentage of Participants
Secondary

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

The Abbott RealTime 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 is presented using the FDA snapshot missing data approach

Time frame: Week 48

Population: All participants who received ≥1 dose of study intervention. Participants were included in the treatment group to which they were randomized.

ArmMeasureValue (NUMBER)
DOR/ISLPercentage of Participants With HIV-1 RNA <50 Copies/mL at Week 4893.8 Percentage of Participants
BIC/FTC/TAFPercentage of Participants With HIV-1 RNA <50 Copies/mL at Week 4894.4 Percentage of Participants
Secondary

Percentage of Participants With One or More AEs up to Week 144

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.

Time frame: Up to Week 144

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