Safety and Efficacy of E/C/F/TDF Versus RTV-Boosted ATV Plus FTC/TDF in HIV-1 Infected, Antiretroviral Treatment-Naive Women

Key Inclusion Criteria:

• Female (at birth), age ≥ 18 years
• Ability to understand and sign a written informed consent form
• Plasma HIV-1 RNA levels ≥ 500 copies/mL
• No prior use of any approved or investigational antiretroviral drug for any length of time
• Screening genotype report must show sensitivity to emtricitabine (FTC), tenofovir disoproxil fumarate (TDF) and atazanavir (ATV) boosted with ritonavir (RTV)
• Normal ECG
• Adequate renal function: Estimated glomerular filtration rate ≥ 70 mL/min according to the Cockcroft Gault formula
• Hepatic transaminases ≤ 5 x upper limit of normal (ULN)
• Total bilirubin ≤ 1.5 mg/dL
• Adequate hematologic function
• Serum amylase ≤ 5 x ULN
• Women of childbearing potential must agree to utilize protocol recommended contraception methods or be non-heterosexually active, or practice sexual abstinence from screening throughout the duration of the study period and for 30 days following the last dose of study drug
• Women who utilize hormonal contraceptive as one of their birth control methods must have used the same method for at least three months prior to study dosing.

Key Exclusion Criteria:

• A new AIDS defining condition diagnosed within the 30 days
• Females receiving drug treatment for Hepatitis C, or females who are anticipated to receive treatment for Hepatitis C during the course of the study
• Females experiencing decompensated cirrhosis
• Females who are breastfeeding
• Positive serum pregnancy test (female of childbearing potential)
• Have an implanted defibrillator or pacemaker
• Have an ECG pulse rate interval ≥ 220 msec
• Current alcohol or substance use which may potentially interfere with the female's study compliance
• History of malignancy within the past 5 years or ongoing malignancy other than cutaneous Kaposi's sarcoma (KS), basal cell carcinoma, or resected, non-invasive cutaneous squamous carcinoma
• Active, serious infections requiring parenteral antibiotic or antifungal therapy within 30 days prior to baseline
• Participation in any other clinical trial without prior approval
• Any other clinical condition or prior therapy that would make the female unsuitable for the study or unable to comply with the dosing requirements
• Females receiving ongoing therapy with any disallowed medications, including drugs not to be used with elvitegravir, cobicistat, FTC, TDF, ATV, RTV; or females with any known allergies to the excipients of Stribild® tablets, Truvada® tablets, atazanavir capsules or ritonavir tablets

Note: Other protocol defined Inclusion/Exclusion criteria may apply.