The goal of this clinical study is to provide continued access to the study drug(s) to children and adolescents with human immunodeficiency virus type 1 (HIV-1) who completed their participation in an applicable parent study and to monitor for adverse events.
The primary objectives of this study are as follows:
* To provide continued access to the study drug received in the parent protocol or switch to bictegravir/emtricitabine/tenofovir (B/F/TAF) for participants who completed a Gilead parent study evaluating drugs for HIV treatment. * To evaluate the safety of the study drug(s) in participants with HIV-1.
Completed an applicable parent study: GS-US-292-0106, GS-US-380-1474, GS-US-311-1269, or GS-US-216-0128, and gave consent to study participation.
Individuals planning to switch to B/F/TAF on Day 1 with plasma HIV RNA ≥ 50 copies/mL during the last parent study visit prior to screening/Day 1 visit.
Note: individuals planning to switch after Day 1 must not have plasma HIV RNA ≥ 50 copies/mL (or detectable HIV-1 RNA level according to the local assay being used if the limit of detection is ≥ 50 copies/mL).
Individuals planning to switch to B/F/TAF with any ongoing Grade 3 or 4 drug-related AE or clinically relevant Grade 3 or 4 drug-related laboratory abnormality (confirmed on repeat) related to any component of B/F/TAF prior to treatment switch.
For those on B/F/TAF or planning to switch to B/F/TAF: previous treatment discontinuation of any component of B/F/TAF due to toxicity or intolerance.