The study will evaluate the safety, tolerability, pharmacokinetics, and anti-retroviral activity of MK-4250 monotherapy in anti-retroviral therapy (ART)-naïve, HIV-1 infected participants. The primary hypothesis of the study is that at a dose that is sufficiently safe and generally well tolerated, MK-4250 has superior antiretroviral activity compared to a historical placebo, as measured by change from baseline in plasma HIV-1 ribonucleic acid (RNA) (log10 copies/mL) at 168 hours postdose.

NCT03351699

Conditions

1. HIV-1 Infection

Interventions

1. Drug: MK-4250

- No evidence at screening for mutations (e.g., E92Q, N55H, Q148K, Q148R and Y143R) affecting susceptibility to Integrase Strand Transfer Inhibitors (InSTIs) - Diagnosed with HIV-1 infection ≥ 3 months prior to screening or confirmed chronic HIV infection - Screening plasma Cluster of Differentiation (CD) 4+ T cell count of >200/mm^3 - Screening plasma HIV-1 RNA ≥5,000 copies/mL within 30 days prior to the treatment phase of this study - Anti-retroviral therapy (ART)-naïve, which is defined as having never received any antiretroviral agent OR ≤30 consecutive days of an investigational antiretroviral agent which is not an InSTI and no exposure to such an investigational antiretroviral agent within 60 days prior to screening OR ≤60 consecutive days of combination ART which does not include an InSTI and no exposure to such ART within 60 days prior to screening - Never received any InSTI - Willing to receive no other ART for the duration of the treatment phase of this study - Body Mass Index (BMI) ≤35 kg/m^2 - Other than HIV infection, have baseline health judged to be stable Exclusion Criteria: - Mentally or legally institutionalized / incapacitated, or significant emotional problems at the time of pretrial (screening) visit or expected during the conduct of the trial or has a history of clinically significant psychiatric disorder within the last 5 years - History of clinically significant endocrine, gastrointestinal, cardiovascular, hematological, hepatic, immunological (outside of HIV-1 infection), renal, respiratory, genitourinary or major neurological abnormalities or diseases - History of cancer (malignancy). --- E92Q --- --- N55H --- --- Q148K ---