Optimizing Bedaquiline-Based Regimens for Pre-Extensively Drug-Resistant Tuberculosis in HIV Co-infection: A Community Peer-Reviewed Clinical Consensus Background: Pre-extensively drug-resistant tuberculosis (pre-XDR TB), characterized by resistance to isoniazid, rifampicin, and fluoroquinolones, presents a significant global health challenge, particularly in individuals co-infected with human immunodeficiency virus (HIV). The advent of novel anti-TB agents and shorter regimens, such as bedaquiline-pretomanid-linezolid (BPaL), offers improved outcomes but necessitates careful consideration of regimen composition, drug dosing, adverse event monitoring, and drug-drug interactions.
Methods: This study synthesizes expert clinical opinion derived from a peer-reviewed clinical Q&A platform (tachyDx), involving two verified physicians and garnering 54 community peer votes. A clinical scenario involving a 34-year-old female with pre-XDR TB and HIV co-infection was presented, prompting discussion on regimen selection, linezolid management, QTc monitoring, antiretroviral therapy (ART) timing, and drug interactions. The accepted answer and additional insights were critically analyzed to establish a consensus.
Results: The BPaL regimen was strongly favored for its shorter duration and high efficacy, contingent on pretomanid availability. Optimal linezolid dosing was identified as 600 mg daily for 26 weeks, with rigorous hematologic and neurologic monitoring. A comprehensive QTc monitoring protocol for bedaquiline, particularly in the context of dolutegravir (DTG) co-administration, was outlined. Continuation of existing ART was recommended, with specific guidance for ART-naïve patients. Critical drug-drug interactions, including those involving CYP3A4 inhibitors/inducers and monoamine oxidase inhibitors, were highlighted.
Conclusions: This expert consensus provides practical, evidence-informed guidance for managing pre-XDR TB in HIV co-infected patients, emphasizing the BPaL regimen, meticulous adverse event monitoring, and proactive management of drug interactions. These recommendations aim to facilitate the safe and effective implementation of novel TB therapies in complex clinical settings.
infectious-disease pulmonology pharmacology