Upoint Phenotypic Classification Of A Sample Of Female Patients With Bladder Pain Syndrome: Results Of A National Multicentric Observational Study

OBJECTIVES: To study the possibility of classifying patients with BPS by UPOINT phenotypes and their correlation with the results of different BPS diagnostic tools.MATERIAL AND METHODS: Epidemiological, observational, longitudinal and multicentric study performed according to clinical practice. A total of 319 women with BPS were included, 79 with new diagnosis and 240 in follow-up. Sociodemographic and clinical data were collected together with results of cystoscopy, biopsy and physical examination. Patients completed a 3-day Bladder Diary (3dBD) and Patient Reported Outcomes (PROs). All the patients were classified according to the 6 UPOINT domains and their distribution was described according to the clinical history, diagnostic tests, urinary symptoms and PROs' scores.RESULTS: 92.8% of the patients had affectation in more than one phenotype, however, there were no remarkable differences in the clinical and sociodemographic variables according to the number of affected domains. The percentage of patients with 3C classification was higher in the urinary (8.2%), organ-specific (9.0%) and neurological (10.9%) phenotypes. Around 90% had high voiding frequency, regardless of the phenotype. The improvement reported by the PROs was superior in the neurological and tenderness phenotypes. The worst scores were associated with a greater number of affected domains.CONCLUSIONS: The present study is the first one carried out in Spain on a phenotypic classification of women with BPS, with data from routine clinical practice. The results point out that patients with several domains affected present more affectation on the BPS, worse HRQoL and higher anxiety.