Management of rifampicin-resistant tuberculosis (RR-TB) remains one of the main obstacles in reaching the goal of TB elimination by 2035 [1]. There are multiple reasons for unfavourable outcomes, including suboptimal, long or toxic treatment regimens, but also a 'one-size-fits-all' approach to treatment delivery. In 2016, WHO recommended a second-line injectable-containing short regimen for treating multidrug-resistant TB (MDR-TB) [2]. In 2018, building on lessons learnt from experiences with the new and repurposed antituberculosis drugs (such as bedaquiline, delamanid, linezolid and clofazimine), all-oral regimens were recommended [3][4][5]. As the performance of regimens also depends