Percentage of participants with HIV-1 RNA\<50 c/mL was obtained using Food and Drug Administration (FDA) Snapshot algorithm. The algorithm treated all participants without HIV-1 RNA data at the visit of interest (due to missing data or discontinuation of investigational product prior to the visit window) as well as participants who switch their concomitant antiretroviral therapy (ART) prior to the visit of interest as non-responders. The Intent-to-Treat Maintenance Exposed (ITT-ME) Population consisted of all randomized participants who received at least one injection or one dose of investigational product during the Maintenance Period of the study (on or after Day 1 visit).

Virologic failure was defined as any of the following: (1) Non-response as indicated by a less than 1.0 logarithm to base 10 (log10) c/mL decrease in plasma HIV-1 RNA after 4 weeks of starting the Induction Period, which is subsequently confirmed, unless the plasma HIV-1 RNA is \< 400 c/mL; (2) Rebound as indicated by two consecutive plasma HIV-1 RNA levels \>=200 c/mL after prior suppression to \< 200 c/mL; (3) Rebound as indicated by two consecutive plasma HIV-1 RNA that are \> 0.5 log10 c/mL increase in plasma HIV-1 RNA from the nadir value on study, where the lowest HIV-1 RNA value is \>=200 c/mL.

An AE is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. A SAE is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, or is a congenital anomaly/birth defect, important medical events which may require medical or surgical intervention, drug-induced liver injury with hyperbilirubinaemia.

An AE is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. A SAE is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, or is a congenital anomaly/birth defect, important medical events which may require medical or surgical intervention, drug-induced liver injury with hyperbilirubinaemia. Data presented includes all post-baseline induction period and maintenance period adverse events, as well as long-term follow-up period adverse events for those participants who did not enter the extension period.

An AE is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Toxicity was graded according to Division of Acquired Immunodeficiency Syndrome (DAIDS) grading criteria, where Grade 1-mild, Grade 2-moderate, Grade 3-severe, Grade 4-potentially life-threatening. Data presented includes all post-baseline treatment emergent Induction Period and MP toxicities, as well as LTFP toxicities for those participants who did not enter the extension period. Number of participants with post-Baseline adverse events by maximum toxicity Grade have been presented.

Clinical chemistry parameters aspartate amino transferase (AST), alanine amino transferase (ALT), alkaline phosphatase (ALP), carbon dioxide(CO2) content/bicarbonate (HCO3), cholesterol, creatine kinase (CK), glucose, low density lipoprotein (LDL) cholesterol, lipase, potassium, and sodium, total bilirubin (TBIL) and triglycerides were evaluated. Toxicity was graded according to Division of Acquired Immunodeficiency Syndrome (DAIDS) grading criteria, where Grade 1-mild, Grade 2-moderate, Grade 3-severe, Grade 4-potentially life-threatening. Data presented includes all post-baseline treatment emergent Induction Period and MP toxicities, as well as LTFP toxicities for those participants who did not enter the extension period. Number of participants with any time post-baseline maximum emergent toxicities in any of the chemistry parameters have been presented.

Hematology parameters hemoglobin, platelet count, total neutrophils and white blood cell count were evaluated. Toxicity was graded according to DAIDS grading criteria, where Grade 1-mild, Grade 2-moderate, Grade 3-severe, Grade 4-potentially life-threatening. Data presented includes all post-baseline treatment emergent Induction Period and MP toxicities, as well as LTFP toxicities for those participants who did not enter the extension period. Number of participants with any time post-baseline maximum emergent toxicities in any of the hematology parameters have been presented.

Urinalysis dipstick included urine occult blood, urine glucose, urine ketones, urine nitrite, urine protein and urine leukocyte. The dipstick test gives results in a semi-quantitative manner and results for urinalysis parameters can be read as positive, trace, 1+, 2+ and 3+ indicating proportional concentrations in the urine sample. Data presented includes all post-baseline dipstick results during Induction and Maintenance Periods, as well as LTFP for those participants who did not enter the extension period.

Plasma PK samples collected at the following time points: Period 1 pre-dose (within 15 minutes prior to dosing), 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48 (Day 3), 72 (Day 4), 120 (Day 6), 168 hours post dose. Period 3 pre-dose Day 21 (within 15 minutes prior to dosing), 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48 (Day 3), 72 (Day 4), 120 (Day 6), 168 hours (Day 8) post dose.

Plasma PK samples collected at the following time points: Period 1 pre-dose (within 15 minutes prior to dosing), 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48 (Day 3), 72 (Day 4), 120 (Day 6), 168 hours post dose. Period 3 pre-dose Day 21 (within 15 minutes prior to dosing), 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48 (Day 3), 72 (Day 4), 120 (Day 6), 168 hours (Day 8) post dose.