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- W2958974345 abstract "Abstract Introduction Rifabutin, a rifamycin of equivalent potency to rifampicin, has several advantages in its pharmacokinetic and toxicity profile, particularly in HIV co‐infected patients on combined antiretroviral therapy (cART). In this commentary, we evaluate evidence supporting increased global use of rifabutin and highlight key recommendations for action. Discussion Although extrapolation of data from HIV uninfected patients would suggest non‐inferiority, there has been no randomized controlled study comparing rifabutin versus rifampicin in the outcomes of relapse‐free cure, in drug susceptible tuberculosis (TB), in HIV co‐infected patients on currently utilized cART regimens or in paediatric populations. An important advantage of rifabutin is that compared to the dose adjustments required with rifampicin, it can be co‐administered with the integrase strand transfer inhibitors raltegravir or dolutegravir without the need for dose adjustments. This strategy would be easier to implement in a programmatic setting and would save costs. We have assessed cost incentives to utilize rifabutin and have estimated generic costs for a range of rifabutin dosage scenarios. Where facilities are present for drug re‐challenge and monitoring for drug toxicity and cross‐reactivity, rifabutin offers a switch alternative for adverse drug reactions (ADR)s attributed to rifampicin. This would negate the need to prolong treatment in the absence of a rifamycin as part of short‐course multidrug therapy. There is evidence of incomplete cross‐resistance to rifampicin and rifabutin. Rifabutin may be useful in rifampicin‐resistant TB, in an estimated 20% of cases, based on phenotypic or genotypic rifabutin susceptibility testing. Conclusions Rifabutin should be available globally as a first‐line rifamycin in HIV co‐infected individuals and as a switch option in cases of rifampicin associated ADRs. Further studies are needed to ascertain the utility of rifabutin in rifampicin‐resistant rifabutin‐susceptible TB." @default.
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- W2958974345 date "2019-07-01" @default.
- W2958974345 modified "2023-10-14" @default.
- W2958974345 title "Global access of rifabutin for the treatment of tuberculosis – why should we prioritize this?" @default.
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- W2958974345 doi "https://doi.org/10.1002/jia2.25333" @default.
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