Disease Burden and Unmet Medical Needs in Patients with Ulcerative Colitis in Greece: A Cross-Sectional Patient Survey.

: Ulcerative colitis (UC) requires life-long disease management. This study aimed to investigate the disease burden and unmet medical needs in UC patients in Greece. : Between October 2023 and January 2024, adult UC patients who were members of the Hellenic Society of Crohn's Disease and Ulcerative Colitis Patients (HELLESCC) completed a structured self-reported questionnaire. The survey questionnaire included sociodemographic characteristics, smoking habits, history of comorbidities, disease activity, disease characteristics, medications, and patient-reported outcomes (PROs; Short Inflammatory Bowel Disease Questionnaire [SIBDQ], Work Productivity and Activity Impairment [WPAI], Patient Health Questionnaire-9 [PHQ-9], treatment satisfaction, and treatment adherence). Univariate and multivariate logistic regression analyses were used to identify associated factors. Datasets were obtained from 181 UC patients, of whom 48% were on advanced therapies (biological/small-molecule agents) and 54% had active disease. Around 74% reported impaired quality of life (QoL) (SIBDQ < 60), 25% work productivity loss, and 29% daily activity impairment. About 40% reported moderate to severe depressive symptoms (PHQ-9 ≥ 10). Reduced adherence and treatment dissatisfaction were reported by approximately one-third of patients. Female gender and disease activity were associated with moderately to severely impaired QoL, work productivity, and mental health. Interestingly, three out of four patients receiving advanced therapy reported moderately to severely impaired QoL and had increased odds of experiencing moderate to severe depression. : The disease burden remains very high in UC, characterized by poor QoL and increased work impairment, depression, and disease activity among Greek patients. Marked treatment dissatisfaction and non-adherence were observed in approximately one-third of patients.