The endTB clinical trial is a Phase III, randomized, controlled, open-label, non-inferiority, multi-country trial evaluating the efficacy and safety of five new, all-oral, shortened 9-month regimens for fluoroquinolone-susceptible multidrug-resistant tuberculosis (MDR-TB). Participants were assigned to experimental and control arms according to Bayesian outcome-adaptive randomization. The endTB randomized controlled clinical trial enrolled 754 participants across twelve sites in seven countries (Georgia, India, Kazakhstan, Lesotho, Pakistan, Peru, and South Africa).