HIV Outpatient Monitoring Evaluation Through Self-collection of Dried Blood Spots (HOME-1)

Up to 150 people receiving care at the UCH-IDGP will be enrolled in the study at a routine clinic visit where a standard of care (SOC) blood collection and/or SOC dose of LA antivirals (e.g., LA IM CAB±RPV) is planned. Once consented, demographic and clinical data will be obtained. Clinical data that will be collected from participant and medical records may include: age, sex at birth and gender identity, race, ethnicity, medication history, duration of current antiviral therapy, hematocrit, CD4+ T-cell count, HIV VL, and self-reported adherence.

The investigators will collect an extra ~5 mL of blood in EDTA by venipuncture for DBS, plasma, whole blood, and blood cells at each clinic-collection visit. At the first clinic-collection visit, participants will be given home self-collection kits and instructed to self-collect samples at various timepoints prior to their next injection (if on LA antivirals), monitored by live video-streaming or time-stamped video. The investigators will go through how to self-collect, handle, and mail the blood samples by self-collecting together in the clinic (in-person training), and participants will be asked about their medical history and medications.

Participants on PO antivirals (e.g., TFV/FTC) may only complete one clinic-collection visit (and one at-home self-collection). At home self-collections and clinic-collections may continue for participants on LA antivirals (e.g., LA IM CAB±RPV) for up to approximately 1 year. All study visits will be linked to SOC visits; there will be no additional visits to the clinic beyond what is already required for SOC:

• If continuing prescribed Q8W injections, up to 7 SOC clinic visits at (approximately) weeks 0, 8, 16, 24, 32, 40, and 48
• If initiating prescribed Q8W injections, up to 7 SOC clinic visits at (approximately) weeks 0, 4, 12, 20, 28, 36, and 44
• If continuing or initiating prescribed Q4W injections, up to 13 SOC clinic visits at (approximately) weeks 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, and 48
• If continuing or initiating prescribed Q26W injections, up to 3 SOC clinic visits at (approximately) weeks 0, 26, and 52

Participants will be asked to self-collect samples at home by two or more methods (self-collection kits): fingerstick and spotting onto Whatman 903 protein saver card, and/or use of one or more self-collection devices (e.g., Tasso-M20/Tasso+, Mitra, others). After sample collection, samples/devices will be shipped back to our laboratory in their provided box(es). All samples obtained by self-collection methods/devices are approved for shipping via mail or other carriers in the US. Participants may complete up to 25 at home self-collections (approximately once biweekly for the participants followed longitudinally).