Safety and Efficacy of Dolutegravir/Lamivudine (DTG/3TC) in Therapy-naive Human Immunodeficiency Virus-1 (HIV-1) Infected Adolescents

Plain-language summary

First-line antiretroviral regimens are highly efficacious and generally well tolerated. However, as these regimens need to be taken life-long, there is growing concern about long-term toxicities associated with these regimens. Thus, there is great interest from participants and clinicians in unique regimens that might avoid such toxicities by minimizing the number of antiretrovirals without sacrificing long-term antiviral efficacy. DTG plus 3TC is a novel, well-tolerated first-line regimen for HIV-infected treatment- naive participants, limiting the risk of many common adverse reactions associated with other antiretroviral drugs. This study was designed to evaluate the efficacy and safety of DTG/3TC as an FDC in ART-naive HIV-1-infected adolescents who weighed at least 25 kilograms (kg). The study consisted of a Screening Phase (up to 28 days prior to the first dose of drug), followed by a Treatment Phase (up to 48 weeks). Participants who successfully completed 48 weeks of therapy and continued to receive benefit from DTG/3TC FDC were eligible to enter a 96-week Extension Phase. Study participants who successfully completed both the Treatment Phase through 48 weeks and the Extension Phase through 144 weeks and continued to receive benefit from this two-drug regimen were to continue receiving DTG/3TC FDC in a Continuation Phase (after Week 144) until DTG and 3TC were both locally approved for use as part of a dual regimen and the single entities of DTG and 3TC were available to participants (e.g., through public health services), or the DTG/3TC FDC tablet, if required by local regulations, was locally approved and available (e.g., commercially or through public health services), or the participant no longer derived clinical benefit, or the participant met a protocol-defined reason for discontinuation. All participants received the FDC of DTG/3TC (50/300 milligrams) once daily.

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