Gepotidacin and Early Symptom Improvement in Uncomplicated Urinary Tract Infection

Importance Uncomplicated urinary tract infections (uUTIs) are common infections in women, and symptoms negatively impact patients’ quality of life. Rapid symptom improvement is a high priority for patients and health care practitioners; however, few studies describe the early clinical effects of treatment. Objective To evaluate clinical symptom improvement daily from 24 hours until end of gepotidacin treatment (96 hours) and on day 10 in females with uUTIs. Design, Setting, and Participants This phase 3b, open-label, single-arm, multicenter nonrandomized clinical trial (October 2, 2024, to March 10, 2025) screened females (aged ≥12 years) with 2 or more uUTI symptoms and urinary nitrites or pyuria at 21 US sites. Intervention Oral gepotidacin (1500 mg) twice daily for 5 days. Main Outcomes and Measures The primary outcome was clinical symptom improvement (decrease in total clinical symptom score [CSS] of ≥1 from baseline without other systemic antimicrobials, with or without resolution) at 24 (±4) hours after treatment initiation. Secondary outcomes were clinical symptom improvement at 48, 72, and 96 (all ±4) hours after treatment initiation, clinical symptom resolution (reduction in total CSS to 0 without other systemic antimicrobials) at 24, 48, 72, and 96 (all ±4) hours after treatment initiation, and safety. Exploratory outcome was clinical symptom improvement and resolution at day 10 (+3 days). Results Overall, 103 females were evaluated, with 97 enrolling, 96 completing the study, 93 completing the study treatment, and 90 (mean [SD] age, 46.1 [16.4] years) included in the clinically evaluable population for the primary outcome. At 24 hours, 49 participants (54.4%; 95% CI, 43.6%-65.0%) in the clinically evaluable population had clinical symptom improvement. The number of participants with clinical symptom improvement at 48, 72, and 96 hours was 71 of 89 (79.8%; 95% CI, 69.9%-87.6%), 81 of 90 (90.0%; 95% CI, 81.9%-95.3%), and 77 of 89 (86.5%; 95% CI, 77.6%-92.8%), respectively. Clinical symptom resolution increased from 3 of 90 patients (3.3%) at 24 hours to 81 of 90 (90.0%) at day 10. Fifty-eight adverse events, mostly mild or moderate, were reported in 27 participants from the safety population. There were no serious adverse events. Conclusions and Relevance In this phase 3b nonrandomized clinical trial, female participants with uUTIs experienced a rapid clinical response to gepotidacin as early as 24 hours after treatment initiation. These data may aid informed decision-making in the use of gepotidacin for treating uUTIs. Trial Registration ClinicalTrials.gov Identifier: NCT06597344