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Effects of Famotidine on the Pharmacokinetics of Atazanavir When Coadministered to Participants With HIV Infection

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01232127
First Posted: November 2, 2010
Last Update Posted: August 31, 2012
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Bristol-Myers Squibb
October 29, 2010
November 2, 2010
July 23, 2012
August 28, 2012
August 31, 2012
February 2011
June 2011   (Final data collection date for primary outcome measure)
  • Maximum Observed Plasma Concentration (Cmax) and Trough Observed Plasma Concentration (Ctrough) for Atazanavir and Ritonavir [ Time Frame: Days 10, 11, 17, 18, 24, and 25 (end of study) and at study discharge for those who discontinued prematurely. ]
  • Time of Maximum Observed Plasma Concentration (Tmax) for Atazanavir and Ritonavir [ Time Frame: Days 10, 11, 17, 18, 24, and 25 (end of study) and at study discharge for those who discontinued prematurely. ]
  • Area Under the Plasma Concentration-time Curve in 1 Dosing Interval (Time 0 to 24 Hours Postdose) (AUC[TAU]) for Atazanavir and Ritonavir [ Time Frame: Days 10, 11, 17, 18, 24, and 25 (end of study) and at study discharge for those who discontinued prematurely. ]
Atazanavir plasma drug concentrations [ Time Frame: Days 10, 17 and 24 ]
Complete list of historical versions of study NCT01232127 on ClinicalTrials.gov Archive Site
  • Number of Participants With Death as Outcome, Serious Adverse Events (SAEs), Adverse Events (AEs) Leading to Discontinuation, AES, and AEs of Clinical Interest [ Time Frame: Days 1 through 25 (end of study), continuously, and at study discharge for those who discontinued prematurely. ]
    An AE is any new unfavorable symptom, sign, or disease or worsening of a preexisting condition that does not necessarily have a causal relationship with treatment. An SAE is any unfavorable medical event that at any dose results in death, persistent or significant disability/incapacity, or drug dependency or abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization.
  • Number of Participants With Abnormalities in Vital Signs [ Time Frame: Days 1, 11, 18, and 25 (end of study) and at study discharge for those who discontinued prematurely. ]
    Vital signs include temperature, respiratory rate, seated blood pressure, and heart rate.
  • Number of Participants With Abnormalities in Electrocardiogram (ECG) Findings [ Time Frame: Days 1 and 25 (end of study) and at study discharge for those who discontinued prematurely. ]
    ECG findings include heart rate, ECG intervals (including PR, QRS, QT, and corrections to QT using both Bazett's and Fridericia's formulae), and Investigator-identified ECG abnormalities.
  • Number of Participants With Abnormalities in Laboratory Test Results [ Time Frame: Days 11, 18, and 25 (end of study) and at study discharge for those who discontinued prematurely. ]
    PreRX=pretreatment; ULN=upper limit of normal. Neutrophils, (absolute), low (10*3 c/uL): <0.85*PreRx, if PreRx <1.5; <1.5 if PreRx ≥1.5. Alanine aminotransferase, high (U/L): >1.25*PreRx if PreRx >ULN; >1.25*ULN if PreRx ≤ULN. Bilirubin, direct (mg/dL), high: >1.1*ULN if PreRx ≤ULN;> 1.1*ULN if PreRx is missing; >1.25*PreRx if PreRx >ULN. Bilirubin, total (mg/dL), high: >1.1*ULN if PreRx ≤ULN;> 1.1*ULN if PreRx is missing; >1.25*PreRx if PreRx >ULN.
  • Ritonavir plasma drug concentrations [ Time Frame: Days 10, 17 and 24 ]
  • Safety measures (physical examinations, ECGs, laboratory tests including liver and renal function, CD4 count and HIV viral load) [ Time Frame: Screening, Day -1, Days 1, 11, 18, 24 and discharge ]
Not Provided
Not Provided
 
Effects of Famotidine on the Pharmacokinetics of Atazanavir When Coadministered to Participants With HIV Infection
Open-Label, Multiple-Dose, Drug Interaction Study to Assess the Effect of Famotidine on the Pharmacokinetics of Atazanavir in HIV-Infected Subjects Receiving Atazanavir With Ritonavir and Tenofovir
The purpose of this study is to assess the effects of famotidine, given twice daily, on atazanavir administered with ritonavir and tenofovir in HIV-infected participants.
This protocol was designed to compare the pharmacokinetic parameters of atazanavir administered as atazanavir/ritonavir, 400/100 mg once daily (QD), plus famotidine, 20 mg and 40 mg twice daily, with the parameters found at the usual clinical dose of atazanavir/ritonavir, 300/100 mg QD, without famotidine in HIV-infected participants receiving tenofovir disoproxil fumarate and at least 1 other nucleoside reverse transcriptase inhibitor.
Interventional
Phase 4
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
HIV
  • Drug: Atazanavir
    Capsule, oral, 300 mg, once daily, 10 days
    Other Names:
    • Reyataz
    • BMS-232632
  • Drug: Atazanavir
    Capsule, oral, 400 mg, once daily, 7 days
    Other Names:
    • Reyataz
    • BMS-232632
  • Drug: Ritonavir
    Capsule, oral, 100 mg, once daily, 10 days
  • Drug: Ritonavir
    Capsule, oral, 100 mg, once daily, 7 days
  • Drug: Tenofovir (TDF)
    Capsule, oral, 300 mg, once daily, 10 days
  • Drug: Tenofovir (TDF)
    Capsule, oral, 300 mg, once daily, 7 days
  • Drug: Nucleoside Reverse Transcriptase Inhibitor (NRTI)
    Oral, 10 days
  • Drug: Nucleoside Reverse Transcriptase Inhibitor (NRTI)
    Oral, 7 days
  • Drug: Famotidine (FAM)
    Tablet, oral, 20 mg, twice daily, 7 days
  • Drug: Famotidine (FAM)
    Tablet, oral, 40 mg, twice daily, 7 days
  • Atazanavir/ritonavir (300/100 mg) + TDF + ≥ 1 NRTI
    The protocol required that participants enrolled in this study already be receiving atazanavir, ritonavir, TDF, and 1 or more NRTIs.
    Interventions:
    • Drug: Atazanavir
    • Drug: Ritonavir
    • Drug: Tenofovir (TDF)
    • Drug: Nucleoside Reverse Transcriptase Inhibitor (NRTI)
  • Atazanavir/ritonavir (400/100) + TDF + ≥1 NRTI + FAM (20)
    FAM=famotidine. The protocol required that participants enrolled in this study already be receiving atazanavir, ritonavir, TDF, and 1 or more NRTIs.
    Interventions:
    • Drug: Atazanavir
    • Drug: Ritonavir
    • Drug: Tenofovir (TDF)
    • Drug: Nucleoside Reverse Transcriptase Inhibitor (NRTI)
    • Drug: Famotidine (FAM)
  • Atazanavir/ritonavir (400/100) + TDF + ≥1 NRTI + FAM (40)
    FAM=famotidine. The protocol required that participants enrolled in this study already be receiving atazanavir, ritonavir, TDF, and 1 or more NRTIs.
    Interventions:
    • Drug: Atazanavir
    • Drug: Ritonavir
    • Drug: Tenofovir (TDF)
    • Drug: Nucleoside Reverse Transcriptase Inhibitor (NRTI)
    • Drug: Famotidine (FAM)
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
25
June 2011
June 2011   (Final data collection date for primary outcome measure)

Key inclusion criteria:

  • Males and females, 18 to 65 years of age, with HIV infection and a body mass index of 18.0 to 35.0 kg/m^2
  • HIV-infected participants receiving a treatment regimen containing only atazanavir/ritonavir, 300/100 mg once daily (QD) + tenofovir, 300 mg QD + at least 1 other nucleotide reverse transcriptase inhibitor continuously for at least 3 months prior to study day 1
  • Plasma HIV RNA levels of <50 copies/mL and a CD4 count >200 cells/mm^3.
  • No history of virologic failure on a protease inhibitor (PI), documented phenotypic PI resistance, or primary PI mutations, according to International AIDS Society recommendations
  • No documented phenotypic resistance to atazanavir or primary genotypic mutations causing resistance to atazanavir
  • Women of childbearing potential who were not nursing or pregnant and were using an acceptable method of contraception for at least 4 weeks before dosing, during the study, and for 8 weeks from the last dose of study drug.
  • Women with a negative pregnancy test result within 24 hours prior to dosing with study medication
  • Women not breastfeeding
  • Men willing or able to agree to practice barrier contraception for the duration of the study and at least 3 months after dosing.

Key exclusion criteria:

  • Any history of CD4 cell count <50 cells/mm^3
  • Previously documented phenotypic or genotypic resistance to any of the currently prescribed NRTIs
  • Any significant acute illness within 6 months of study day 1 or chronic medical illness unless stable or controlled by a nonprohibited medication
  • Any major surgery within 4 weeks of study day 1
  • Any gastrointestinal surgery that could impact upon the absorption of any study drug
  • Inability to be venipunctured and/or tolerate venous access
  • History of Gilbert's syndrome, hemophilia, chronic pancreatitis, hypochlorhydria, achlorhydria, clinically relevant gastroesophageal reflux disease, hiatal hernia, or peptic/gastric ulcer disease
  • Intractable diarrhea (≥ 6 loose stools/day for at least 7 consecutive days) within 30 days prior to study day 1
  • Recent (within 6 months prior to study day 1) drug or alcohol abuse
  • Evidence of organ dysfunction or any clinically significant deviation from normal in physical examination, vital signs, electrocardiogram (ECG)
  • Evidence of organ dysfunction or any clinically significant deviation from normal in physical examination, vital signs, ECG, or clinical laboratory determinations, which would not be expected for the extent of HIV disease
  • Any of the following on 12-lead ECG prior to dosing on study day 1, confirmed by repeat: PR ≥ 210 msec; QRS ≥ 120 msec; QT ≥ 500 msec; QTcF ≥ 450 msec
  • Second- or third-degree A-V block or clinically relevant ECG abnormalities
  • Positive urine screen for drugs of abuse at screening or prior to dosing without a valid prescription. Positive urine drug screen for cannabinoids with or without a prescription is not exclusionary
  • Creatinine clearance, as estimated by method of Cockcroft and Gault, less than 60 mL/min
  • Liver enzyme levels > 3* the upper limit of normal (ULN) prior to dosing on study day 1
  • Total bilirubin level >10*ULN prior to study day 1
  • Positive blood screen for hepatitis B surface antigen or hepatitis C antibody.
Sexes Eligible for Study: All
18 Years to 65 Years   (Adult)
No
Contact information is only displayed when the study is recruiting subjects
Germany,   United Kingdom
 
 
NCT01232127
AI424-398
2009-016981-95 ( EudraCT Number )
No
Not Provided
Not Provided
Bristol-Myers Squibb
Bristol-Myers Squibb
Not Provided
Study Director: Bristol-Myers Squibb Bristol-Myers Squibb
Bristol-Myers Squibb
August 2012

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP