Geneva, March 23 -- International Clinical Trials Registry received information related to the study (ChiCTR2600119734) titled 'A retrospective study evaluating the effectiveness and safety of perioperative systemic therapy for malignant biliary tumors' on March 3.

Study Type: Observational study

Study Design: Cohort study

Primary Sponsor: Ningbo Medical Centre Lihuili Hospital

Condition: Biliary Tract Cancer

Intervention: Preoperative neoadjuvant therapy:None

Recruitment Status: Not Recruiting

Phase: N/A

Date of First Enrollment: 2026-03-03

Target Sample Size: Preoperative neoadjuvant therapy:400;Postoperative adjuvant therapy combined with immunotherapy:400;

Countries of Recruitment: China

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