E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Human Immunodeficiency Virus (HIV-1) Infection |
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E.1.1.1 | Medical condition in easily understood language |
Human Immunodeficiency Virus (HIV-1) Infection |
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E.1.1.2 | Therapeutic area | Diseases [C] - Virus Diseases [C02] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10068341 |
E.1.2 | Term | HIV-1 infection |
E.1.2 | System Organ Class | 100000004862 |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To evaluate the efficacy of switching to a FDC of GS-9883/F/TAF versus continuing on a regimen consisting of boosted atazanavir or darunavir plus either FTC/TDF or ABC/3TC in HIV-1 infected adult subjects who are virologically suppressed as determined by the proportion of subjects with virologic failure (HIV-1 RNA ≥ 50 copies/mL) at Week 48 |
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E.2.2 | Secondary objectives of the trial |
To evaluate the safety and tolerability of the two treatment groups through Week 48 |
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E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
An intensive pharmacokinetic (PK) substudy will be performed at the Weeks 4 or 8 visits in a subset of Treatment Group 1 subjects (target n=24) at study sites able to conduct this testing.
A pharmacogenomic substudy - for subjects who agree to participate and provide their additional specific consent, three blood samples will be obtained for the extraction of DNA for genomic testing and for potential genotyping to identify polymorphisms of drug metabolism enzymes Uridine 5' diphospho-glucuronosyltransferase (UGT1A1) and additional biomarker testing such as human leukocyte antigen (HLA). These samples will be collected at Day 1. |
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E.3 | Principal inclusion criteria |
1) The ability to understand and sign a written informed consent form, which must be obtained prior to initiation of study procedures 2) Aged 18 years or older 3) Currently receiving a once daily antiretroviral regimen consisting of ritonavir or cobicistat boosted ATV or DRV plus either FTC/TDF or ABC/3TC for 6 months or more preceding the screening visit 4) HIV RNA < 50 copies/mL at the screening visit 5) Normal ECG (or if abnormal, determined by the Investigator to be not clinically significant) 6) Adequate renal function 7) Hepatic transaminases (AST and ALT) ≤ 5 x upper limit of normal (ULN) 8) Total bilirubin ≤ 1.5 mg/dL (≤ 26 umol/L), or normal direct bilirubin 9) Adequate hematologic function (absolute neutrophil count ≥ 750/mm3 (≥ 0.75 GI/L); platelets ≥ 50,000/mm3 (≥ 50 GI/L); hemoglobin ≥ 8.5 g/dL (≥ 85 g/L)) 10) Serum amylase ≤ 5 × ULN (subjects with serum amylase > 5 × ULN will remain eligible if serum lipase is ≤ 5 × ULN) 11) Females of childbearing potential must agree to utilize protocol recommended highly effective contraceptive methods or be non-heterosexually active or practice sexual abstinence (as defined in Appendix 6) from screening, throughout the duration of the study period, and for 30 days following the last dose of study drug 12) Male subjects who engage in heterosexual intercourse must agree to use protocol specified method(s) of contraception (as described in Appendix 6) throughout the study period and for 90 days following the last dose of study drug 13) Male subjects must agree to refrain from sperm donation from first study drug dose until at least 90 days following the last study drug dose 14) Life expectancy ≥ 1 year 15) Currently on a stable regimen for ≥ 6 months preceding the Screening visit with documented plasma HIV-1 RNA < 50 copies/mL (or undetectable HIV-1 RNA level according to the local assay being used if the limit of detection is ≥ 50 copies/mL) 16) Have no documented or suspected resistance to FTC, TFV, ABC or 3TC, including but not limited to the reverse transcriptase resistance mutations K65R and M184V/I 17) No previous use of any approved or experimental integrase strand transfer inhibitor (INSTI) |
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E.4 | Principal exclusion criteria |
1) An opportunistic illness indicative of stage 3 HIV diagnosed within the 30 days prior to screening 2) Subjects experiencing decompensated cirrhosis 3) Have been treated with immunosuppressant therapies or chemotherapeutic agents within 3 months of study screening, or expected to receive these agents or systemic steroids during the study 4) Current alcohol or substance use judged by the Investigator to potentially interfere with subject study compliance 5) A history of or ongoing malignancy (including untreated carcinoma in-situ) other than cutaneous Kaposi's sarcoma (KS), basal cell carcinoma, or resected, non-invasive cutaneous squamous carcinoma. 6) Active, serious infections (other than HIV-1 infection) requiring parenteral antibiotic or antifungal therapy within 30 days prior to Day 1 7) Participation in any other clinical trial, including observational studies, without prior approval from the sponsor is prohibited while participating in this trial 8) Any other clinical condition or prior therapy that, in the opinion of the Investigator, would make the subject unsuitable for the study or unable to comply with the dosing requirements 9) Any known allergies to the excipients of GS-9883/F/TAF FDC or ATV, RTV, DRV, COBI, FTC/TDF or ABC/3TC 10) Females who are pregnant (as confirmed by positive serum pregnancy test) 11) Females who are breastfeeding 12) Subjects receiving ongoing therapy with any of the medications listed in Table 5-1 and Table 5-2. Administration of any Prohibited Medication (Table 5-1 and Table 5-2) must be discontinued at least 30 days prior to the Day 1 visit and for the duration of the study. 13) Acute hepatitis in the 30 days prior to study entry 14) Chronic hepatitis B infection in subjects not on a TDF containing regimen 15) Active tuberculosis infection |
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E.5 End points |
E.5.1 | Primary end point(s) |
The proportion of subjects with virologic failure (HIV-1 RNA ≥ 50 copies/mL) at Week 48 as defined by the modified US FDA-defined snapshot algorithm |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
- The proportion of subjects with HIV-1 RNA < 50 copies/mL at Week 48 as defined by the US FDA-defined snapshot algorithm
- The change from baseline in CD4+ cell counts at Week 48 |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | Yes |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 2 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 31 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Australia |
Belgium |
Canada |
France |
Germany |
Italy |
Puerto Rico |
Spain |
United Kingdom |
United States |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 3 |
E.8.9.1 | In the Member State concerned months | 1 |
E.8.9.1 | In the Member State concerned days | 1 |
E.8.9.2 | In all countries concerned by the trial years | 3 |
E.8.9.2 | In all countries concerned by the trial months | 6 |