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Rifabutin

Phase 1

Antivirals/HIV | Small molecule | Infectious Disease |Bristol-Myers Squibb Company|Last Updated: Jan 31, 2013

Success Probability

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Market & Valuation

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Trial Design

RandomizedACTIVE_CONTROLLED
Total Trials1
Total Enrollment85

FDA Designations

No designations recorded

Clinical trial landscape

Rifabutin · 1 trial · 1 indication

Phase 1 1
NCT00646776Drug Interaction StudyAntivirals/HIV
COMPLETED85 Analytics
PHASE1COMPLETED
Drug Interaction Study
Antivirals/HIVUnlock trial analytics

Study Endpoints

Primary Endpoints

Average Area Under the Plasma Concentration-time Curve for 24 Hours (AUC24avg) for Rifabutin (RIB)
Pre-dose (0 hours [h]) on Days 6, 8, 10, and 11, and post-dose (1h,2h,3h,4h,6h,8h,12h) on Day 10 for RIB 150 mg QD; and pre-dose (0h) on Days 4, 8,11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.

AUC24avg is AUC(0-24 hour) following dosing on Day 10 for RIB 150mg once daily (QD); AUC24avg is the area under the plasma concentration-time curve in 1 dosing interval (AUC\[TAU\]) divided by the number of days over the sampling duration for ATV/RTV 300/100 mg QD+RIB 150 mg twice weekly, i.e. AUC(TAU)/7.

Maximum Plasma Concentration (Cmax) of RIB
Pre-dose (0h) on Days 6, 8, 10, and 11, and post-dose (1h,2h,3h,4h,6h,8h,12h) on Day 10 for RIB 150 mg QD; and pre-dose (0h) on Days 4, 8,11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.

Cmax was derived from plasma concentration versus time for RIB and was recorded directly from experimental observations for each treatment period.

Minimum Plasma Concentration (Cmin) of RIB
Pre-dose (0h) on Days 6, 8, 10, and 11, and post-dose (1h,2h,3h,4h,6h,8h,12h) on Day 10 for RIB 150 mg QD; and pre-dose (0h) on Days 4, 8,11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.

Cmin was derived from plasma concentration versus time for RIB.

AUC24avg for 25-O-Desacetyl-RIB
Pre-dose (0h) on Days 6, 8, 10, and 11, and post-dose (1h,2h,3h,4h,6h,8h,12h) on Day 10 for RIB 150 mg QD; and pre-dose (0h) on Days 4, 8,11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.

AUC24avg is AUC(0-24 hour) following dosing on Day 10 for RIB 150 mg QD; AUC24avg is the area under the plasma concentration-time curve in 1 dosing interval (AUC\[TAU\]) divided by the number of days over the sampling duration for ATV/RTV 300/100 mg QD+RIB 150 mg twice weekly, i.e. AUC(TAU)/7

Cmax of 25-O-Desacetylrifabutin (25-O-Desacetyl-RIB)
Pre-dose (0h) on Days 6, 8, 10, and 11, and post-dose (1h,2h,3h,4h,6h,8h,12h) on Day 10 for RIB 150 mg QD; and pre-dose (0h) on Days 4, 8,11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.

Cmax was derived from the plasma concentration versus time for 25-O-Desacetyl-RIB (a metabolite of RIB) and was recorded directly from experimental observations for each treatment period.

Cmin of 25-O-Desacetyl-RIB
Pre-dose (0h) on Days 6, 8, 10, and 11, and post-dose (1h,2h,3h,4h,6h,8h,12h) on Day 10 for RIB 150 mg QD; and pre-dose (0h) on Days 4, 8,11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.

Cmin was derived from plasma concentration versus time for 25-O-Desacetyl-RIB.

Total Area Under the Plasma Concentration-time Curve (AUCtot)
Pre-dose (0h) on Days 6, 8, 10, and 11, and post-dose (1h,2h,3h,4h,6h,8h,12h) on Day 10 for RIB 150 mg QD; and pre-dose (0h) on Days 4, 8,11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.

AUCtot represents the total free RIB plus 25-O-Desacetyl-RIB output. It is calculated as: AUCtot (micromolar\[µM\]\*h) = AUC24avg(RIB)(ng\*h/mL)/847.016 (g/mole) + AUC24avg(25-O-Desacetyl-RIB)(ng\*h/mL)/804.979(g/mole). The 300 mg RIB arm represents an extrapolation from the 150 mg RIB group.

Secondary Endpoints

Cmax of ATV
Pre-dose (0h) on Days 4, 8, 11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.
Cmin of ATV
Pre-dose (0h) on Days 4, 8, 11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.
AUC(TAU) for ATV
Pre-dose (0h) on Days 4, 8, 11 to 18 and post-dose (1h,2h,3h,4h,6h,8h,12h) on Days 11 and 15 for ATV/RTV + RIB.
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
AACTIVE_COMPARATOR -
BACTIVE_COMPARATOR -

Interventions

NameTypeDescription
RifabutinDRUGCapsule, Oral, 150 mg, once daily, 11 Days
Rifabutin + Atazanavir + RitonavirDRUGCapsules, Oral, 18 Days Rifabutin (150 mg, 2x/wk) Atazanavir (300 mg, once daily) Ritonavir (100 mg, once daily)
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Eligibility Criteria

Age Range18 Years to 50 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Healthy male and female subjects between the ages of 18 to 50 years old with a body mass index (BMI) of 18 to 32 kg/m² * Prior to enrollment, subjects must have physical and laboratory test findings within the normal limits, and women of childbearing potential (WOCBP) must hav...

Countries:United States
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Frequently asked questions about Rifabutin

What is Rifabutin used for?

Rifabutin is a small molecule being developed for use in antivirals and HIV treatment. It is currently in Phase 1 clinical development for infectious disease indications. The drug is being studied for its potential role in managing HIV-related conditions, though it remains investigational and is not yet approved.

Who makes Rifabutin?

Rifabutin is being developed by Bristol-Myers Squibb Company, which trades under the ticker BMY. The company is conducting clinical research on this small molecule for infectious disease applications, specifically in the area of antivirals and HIV treatment.

What phase is Rifabutin in?

Rifabutin is currently in Phase 1 clinical development. It is an investigational drug being studied for infectious disease indications, particularly in the field of antivirals and HIV. The drug has completed one Phase 1 trial and is not yet approved for any use.

What clinical trials is Rifabutin in?

Rifabutin has been studied in one completed clinical trial, NCT00646776, titled "Drug Interaction Study." This Phase 1 trial enrolled 85 participants in the United States, including healthy volunteers, and was active-controlled but not double-blinded. The study focused on antiviral and HIV-related conditions.

Is Rifabutin FDA approved?

Rifabutin is not FDA approved. It is an investigational drug currently in Phase 1 clinical development for infectious disease indications, specifically antivirals and HIV. The drug has completed one clinical trial but remains in early-stage development and has not received regulatory approval.