Individual Factors Associated With Care Pathways Delays in Breast Cancer in Hauts-de-France.

Women in the Hauts-de-France region show higher breast cancer mortality despite no overall higher incidence, suggesting differences in the care pathway. This multicenter study will describe the overall time from the first warning sign to initiation of the first treatment, and will break down this delay into three consecutive intervals (symptoms to mammography, mammography to biopsy, biopsy to first treatment). Participants will complete a one-time questionnaire (up to 1 hour, with assistance if needed), and clinical data will be extracted in a standardized way from medical records (key dates and tumor characteristics). A random sample of 10% of incident breast cancer cases identified by each hospital information department will be used to ensure balanced geographic representation across 38 centers. The study will also explore how individual and contextual factors (psychological, behavioral, socio-demographic, access to care, communication) are associated with each time interval, and exploratory analyses will assess links with severity (metastases and prognostic score).

NCT Number	NCT07475325
Lead Sponsor	University Hospital, Lille Collaborators: Université de Lille, Breast Cancer Research Foundation
Conditions	Breast Cancer, Invasive Breast Carcinoma
Enrollment	500 participants
Start Date	2026-04-20
Primary Completion	2028-03 (estimated)
Study Completion	2028-03 (estimated)
Updated on ClinicalTrials.gov	2026-05-12