Safety and Efficacy of Doravirine, Tenofovir, Lamivudine (MK-1439A) in Participants Infected With Treatment-Naïve Human Immunodeficiency Virus (HIV) -1 With Transmitted Resistance (MK-1439A-030)

Merck Sharp & Dohme LLC10 enrolled

Overview

The primary objectives of this study are to evaluate the antiretroviral activity and the safety/tolerability of open-label doravirine/lamivudine/tenofovir disoproxil fumarate (DOR/3TC/TDF; MK-1439A; DELSTRIGO™) consisting of a single fixed-dose combination (FDC) tablet of DOR/3TC/TDF 100 mg/300 mg/300 mg in treatment-naïve HIV-1 infected participants with select non-nucleoside reverse transcriptase inhibitor (NNRTI) transmitted resistance-associated mutations.

This study had a Base Study (Day 1 to Week 96) and an optional Study Extension (Week 96 to Week 192).

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

HIV-1 Infection

Interventions

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Is HIV-1 positive within 45 days prior to the treatment phase of this study, and have HIV treatment indicated based on physician assessment. * Is naïve to antiretroviral therapy (ART) including investigational antiretroviral agents. * Prior to screening, have had a genotype performed confirming the presence of only one of the following NNRTI mutations: K103N, Y181C, or G190A. * Is considered clinically stable with no signs or symptoms of active infection at time of entry into the study (i.e. clinical status and all chronic medications should be unchanged for at least 2 weeks prior to the start of treatment in this study). * Is highly unlikely to become pregnant or to impregnate a partner Exclusion Criteria: * Is a user of recreational or illicit drugs or has had a recent history of drug or alcohol abuse or dependence. * Has been treated for a viral infection other than HIV-1, such as hepatitis B, with an agent that is active against HIV-1, including, but not limited to, adefovir, tenofovir, entecavir, emtricitabine, or lamivudine. * Has documented or known resistance to study drugs (doravirine, lamivudine, and/or tenofovir) * Has participated or anticipates participating in a study with an investigational compound/device within 30 days prior to signing informed consent * Has any medical condition requiring, or likely to require, chronic systemic administration of corticosteroids, tumor necrosis factor (TNF) antagonists, or other immunosuppressant drugs during the course of the trial. * Requires or anticipates requiring any of the prohibited medications * Has significant hypersensitivity or other contraindication to any of the components of the study drug * Has a current (active) diagnosis of acute hepatitis due to any cause * Has evidence of decompensated liver disease or has liver cirrhosis and a Child-Pugh Class C score or Pugh-Turcotte (CPT) score \> 9 * Is pregnant, breastfeeding, or expecting to conceive * Is female and expecting to donate eggs, or is male and is expecting to donate sperm at any time during the study

Outcomes

Primary Outcomes

Percentage of Participants Achieving HIV-1 Ribonucleic Acid (RNA) <50 Copies/mL of Plasma at Week 48

The percentage of participants achieving HIV-1 ribonucleic acid (RNA) \<50 copies/mL in plasma at Week 48 was calculated. The Abbott RealTime HIV-1 Assay, which has a lower limit of reliable quantification (LoQ) of 40 copies/mL, was used to measure the HIV-1 RNA level in plasma samples obtained at Week 48 visit.

Time frame: Week 48

Percentage of Participants Experiencing ≥1 Adverse Events (AE) up to Week 48

The percentage of participants experiencing ≥1 AE up to Week 48 was calculated. An AE was defined as any unfavorable and unintended sign, symptom, or disease (new or worsening) temporally associated with the use of study therapy, regardless of whether or not a causal relationship with the study therapy could be determined.

Time frame: Up to Week 48

Percentage of Participants Who Discontinued Treatment Due to an AE up to Week 48.

The percentage of participants who discontinued from study medication due to an adverse event was calculated. An AE was defined as any unfavorable and unintended sign, symptom, or disease (new or worsening) temporally associated with the use of study therapy, regardless of whether or not a causal relationship with the study therapy could be determined.

Time frame: Up to Week 48

Percentage of Participants Experiencing ≥1 Adverse Events (AE) up to Week 96

The percentage of participants experiencing ≥1 AE up to Week 96 was calculated. An AE was defined as any unfavorable and unintended sign, symptom, or disease (new or worsening) temporally associated with the use of study therapy, regardless of whether or not a causal relationship with the study therapy could be determined.

Time frame: Up to Week 96

Percentage of Participants Who Discontinued Treatment Due to an AE up to Week 96

Time frame: Up to Week 96

Secondary Outcomes

Percentage of Participants Achieving HIV-1 Ribonucleic Acid (RNA) <50 Copies/mL of Plasma at Week 96

The percentage of participants achieving HIV-1 ribonucleic acid (RNA) \<50 copies/mL in plasma at Week 96 was calculated. The Abbott RealTime HIV-1 Assay, which has a lower limit of reliable quantification (LoQ) of 40 copies/mL, was used to measure the HIV-1 RNA level in plasma samples obtained at Week 96 visit.

Time frame: Week 96

Percentage of Participants Achieving HIV-1 Ribonucleic Acid (RNA) <40 Copies/mL of Plasma at Week 48

The percentage of participants achieving HIV-1 ribonucleic acid (RNA) \<40 copies/mL in plasma at Week 48 was calculated. The Abbott RealTime HIV-1 Assay, which has a lower limit of reliable quantification (LoQ) of 40 copies/mL, was used to measure the HIV-1 RNA level in plasma samples obtained at Week 48 visit. Participants with reading below the LoQ were considered to have \<40 copies/mL.

Time frame: Week 48

Percentage of Participants Achieving HIV-1 Ribonucleic Acid (RNA) <40 Copies/mL of Plasma at Week 96

The percentage of participants achieving HIV-1 ribonucleic acid (RNA) \<40 copies/mL in plasma at Week 96 was calculated. The Abbott RealTime HIV-1 Assay, which has a lower limit of reliable quantification (LoQ) of 40 copies/mL, was used to measure the HIV-1 RNA level in plasma samples obtained at Week 96 visit. Participants with reading below the LoQ were considered to have \<40 copies/mL.

Time frame: Week 96

Change From Baseline in CD4 Cell Count at Week 48

The change from baseline in CD4 cell count at Week 48 was calculated.

Time frame: Baseline (Day 1) and Week 48

Change From Baseline in CD4 Cell Count at Week 96

The change from baseline in CD4 cell count at Week 96 was calculated.

Time frame: Baseline (Day 1) and Week 96

Time to Loss of Virologic Response

The time to loss of virologic response (TLOVR) was reported. For participants who achieved HIV-1 RNA \<50 copies/mL of plasma and subsequently had two consecutive HIV-1 RNA values of ≥50 copies/mL measured at least 1 week apart, TLOVR was the time between Day 1 and the date of the first of the two consecutive values ≥50 copies/mL. For participants who achieved and sustained HIV-1 RNA \<50 copies/mL, time to loss of virologic response was censored at the time of the last available measurement.