Spots Global Cancer Trial Database for Sintilimab in Cancer of Unknown Primary

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Trial Identification

Brief Title: Sintilimab in Cancer of Unknown Primary

Official Title: A Phase 2 Clinical Trial Evaluating the Efficacy and Safety of Sintilimab for Advanced Rare Cancers (SiARa Cancer Study) - Cancer of Unknown Primary (SiARa-CUP)

Study ID: NCT05024968

Conditions

Cancer of Unknown Primary Site

Interventions

Sintilimab

Study Description

Brief Summary: This is a Phase 2 clinical trial evaluating the efficacy and safety of sintilimab in subjects with CUP. Up to 45 subjects with CUP will be enrolled. Subjects will be treated with sintilimab at 200 mg via intravenous (IV) administration on Cycle 1 Day 1. The treatment will repeat every 3 weeks until progressive disease (PD), intolerable toxicity, initiation of new anti-tumor therapy, withdrawal of consent, lost to follow-up, death, completion of therapy, or any other investigator-determined reasons for treatment discontinuation (whichever occurs first). Treatment will continue for a maximum period of 24 months (starting from the first dose). During the trial, tumor imaging evaluation will be initially performed once every 9 weeks (± 7 days) and will be based on Response Evaluation Criteria in Solid Tumors (RECIST) 1.1. After the completion or discontinuation of the study treatment, safety follow-up and survival follow-up will be performed. Considering the rareness of the disease, the patient accrual rate is expected to be approximately 2 patients per month. The total study duration is expected to be between 24-27 months with 6-month follow up.

Detailed Description: Primary Objectives: * To evaluate the safety and efficacy of sintilimab in subjects with CUP Secondary Objectives: * To evaluate the overall objective response rate (ORR) (investigator assessed), disease control rate (DCR), duration of response (DOR), progression-free survival (PFS), overall survival (OS) and Quality of Life (QOL) on sintilimab in subjects with CUP Exploratory Objectives: * To evaluate the correlation between biomarkers in tumor tissue and efficacy, including but not restricted to PD-L1 expression level, transcriptome sequencing, single-cell sequencing, and multicolor immunohistochemistry (IHC) analyses; * To evaluate the correlation between biomarkers in peripheral blood and drug efficacy, including but not restricted to soluble PD-L1, circulating tumor DNA (ctDNA), and cytokine analyses.