Primary Objective: \- To evaluate the effect of single and repeated administration of rifapentine given as daily or weekly regimen on steady-state pharmacokinetic parameters of efavirenz, emtricitabine and tenofovir given as a fixed dose combination (ATRIPLA™ ). Secondary Objective: \- To evaluate the safety and tolerability of concomitant administration of rifapentine and ATRIPLA™ given to HIV+ patients
* Screening to admission: up to 21 days * Admission to the end of the follow-up: up to 41 days * Period 1: Treatment period of 15 days with ATRIPLA™ (background therapy). Patients should receive the same regimen and dose of ATRIPLA™ during the all study screening and period 1. * Period 2: Treatment over a period of 21 days in co-administration with rifapentine. * Follow up: 3 to 5 days after the last rifapentine administration.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
25
Pharmaceutical form:tablet Route of administration: oral
Pharmaceutical form:tablet Route of administration: oral
Investigational Site Number 840001
Buffalo, New York, United States
To determine PK parameters Cmax, Cmin and AUC0-24 for efavirenz (EFZ), emtricitabine (EMT) and tenofovir (TDF)
Time frame: Day-2, Day 1 and Day 21 for cohorts 1 and 3, and on Day -2 ,Day 1 and Day 16 for cohort 2
To determine PK parameters t1/2z, tmax for efavirenz (EFZ), emtricitabine (EMT) and tenofovir (TDF)
Time frame: Day-2, Day 1 and Day 21 for cohorts 1 and 3, and on Day -2, Day 1 and Day 16 for cohort 2
To determine PK parameters tlag, CL/F for efavirenz (EFZ), emtricitabine (EMT) and tenofovir (TDF)
Time frame: Day-2, Day 1 and Day 21 for cohorts 1 and 3, and on Day -2, Day 1 and Day 16 for cohort 2
To determine PK parameter for AUC0-10 for efavirenz (EFZ), emtricitabine (EMT) and tenofovir (TDF)
Time frame: Day -2 and Day 1 for cohorts 1 and 3
To determine PK parameters Ctrough for rifapentine and 25-desacetyl- rifapentine (25-DR)
Time frame: Cohort 2: Day 1, 8, and 15
To determine PK parameters C8h for rifapentine and 25-desacetyl- rifapentine (25-DR)
Time frame: Cohort 2: Day 1, 8, and 15
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