Tokyo, Oct. 10 -- UMIN Clinical Trials Registry (UMIN-CTR) received information related to the study (UMIN000058081) titled 'A nationwide multi-institutional retrospective study to investigate predictors of positive peritoneal cytology in pancreatic Cancer -A project study of Japan Pancreas Society-' on Oct. 10.

Study Type: Observational

Primary Sponsor: Institute - Japan Pancreas Society

Condition: Condition - Pancreatic cancer Classification by malignancy - Malignancy Genomic information - NO

Objective: Narrative objectives1 - The purpose of this study is to elucidate the relationship between peritonial cytology(CY) positivity and clinicopathologic factors such as pretreatment laboratory tests and resectability classification in pancreatic cancer, and to identify predictive factors for CY positivity. Basic objectives2 - Bio-availability

Eligibility: Age-lower limit - 18 years-old <= Age-upper limit - Not applicable Gender - Male and Female Key inclusion criteria - 1) Patients with pancreatic cancer who have histologically or cytologically confirmed adenocarcinoma or adenosquamous carcinoma prior to performing peritonial cytology. 2) Cases in which resectability classification is diagnosed prior to performing peritonial cytology. 3) Cases in which preoperative treatment (chemotherapy, radiation therapy, or combined chemoradiotherapy) has not been introduced prior to performing peritonial cytology. 4) Patients meeting the above criteria who underwent peritonial cytology between January 1, 2017 and December 31, 2024, at the time of the review laparoscopy or at the time of radical resection without preoperative treatment. Key exclusion criteria - 1) Cases with malignant tumors under treatment or diagnosed concurrently at the time of diagnosis of pancreatic cancer (*Endoscopically curatively resected intramucosal carcinoma or basal cell carcinoma or squamous cell carcinoma of the skin may be registered). 2) Cases of residual pancreatic cancer. 3) Cases diagnosed with resectability classification of UR-M before laparoscopy. 4) Cases who refused to participate in this study by opting out. Target Size - 5000

Recruitment Status: Recruitment status - Preinitiation Date of protocol fixation - 2025 Year 05 Month 06 Day Anticipated trial start date - 2025 Year 10 Month 10 Day Last follow-up date - 2027 Year 12 Month 31 Day

To know more, visit https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000066045

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