4.7 Article

Improving Traditional Registrational Trial End Points: Development and Application of a Desirability of Outcome Ranking End Point for Complicated Urinary Tract Infection Clinical Trials

Journal

CLINICAL INFECTIOUS DISEASES
Volume 76, Issue 3, Pages E1157-E1165

Publisher

OXFORD UNIV PRESS INC
DOI: 10.1093/cid/ciac692

Keywords

desirability of outcome ranking; complicated urinary tract infections; clinical trials; drug development

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The study applied the DOOR method in three registrational drug trials for complicated urinary tract infections and found no significant difference between the treatment and control groups. DOOR can improve understanding of the trade-offs between clinical efficacy and safety.
Background Traditional end points used in registrational randomized, controlled trials (RCTs) often do not allow for complete interpretation of the full range of potential clinical outcomes. Desirability of outcome ranking (DOOR) is an approach to the design and analysis of clinical trials that incorporates benefits and risks of novel treatment strategies and provides a global assessment of patient experience. Methods Through a multidisciplinary committee of experts in infectious diseases, clinical trial design, drug regulation, and patient experience, we developed a DOOR end point for infectious disease syndromes and demonstrated how this could be applied to 3 registrational drug trials (ZEUS, APEKS-cUTI, and DORI-05) for complicated urinary tract infections (cUTIs). ZEUS compared fosfomycin to piperacillin/tazobactam, APEKS-cUTI compared cefiderocol to imipenem, and DORI-05 compared doripenem to levofloxacin. Using DOOR, we estimated the probability of a more desirable outcome with each investigational antibacterial drug. Results In each RCT, the DOOR distribution was similar and the probability that a patient in the investigational arm would have a more desirable outcome than a patient in the control arm had a 95% confidence interval containing 50%, indicating no significant difference between treatment arms. DOOR facilitated improved understanding of potential trade-offs between clinical efficacy and safety. Partial credit and subgroup analyses also highlight unique attributes of DOOR. Conclusions DOOR can effectively be used in registrational cUTI trials. The DOOR end point presented here can be adapted for other infectious disease syndromes and prospectively incorporated into future clinical trials. A multidisciplinary committee developed an infectious diseases desirability of outcome ranking end point and demonstrated how this could be applied to 3 registrational trials for complicated urinary tract infections, allowing for improved understanding of risks and benefits with each treatment.

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