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Clinical Trial Summary

This is a non-therapeutic study assessing peripheral T cell determinants of response and resistance to immunotherapy in patients with advanced melanoma.The hypothesis is that systemic T cells traffic into the tumor microenvironment (TME) can predict response and resistance to immunotherapy. These systemic tumor directed T cells can be defined by tumor/blood small conditional RNA (scRNA) using T cell receptor (TCR) as a barcode and can help predict response to PD-1 therapy.


Clinical Trial Description

Primary Objective: To understand how the systemic immune profile (T cell activation and expansion in TME) changes in response to pembrolizumab therapy in patients with advanced melanoma on pembrolizumab monotherapy. Exploratory Objectives : I. To correlate the peripheral T cell profiles with the objective response rate (ORR) at 24 weeks in patients with advanced melanoma on pembrolizumab monotherapy. II. To correlate the peripheral T cell profiles with progression free survival (PFS) in patients with advanced melanoma on pembrolizumab monotherapy. III. To correlate the peripheral T cell profiles with overall survival (OS) in patients with advanced melanoma on pembrolizumab monotherapy. IV. To correlate the peripheral T cell profiles with toxicity profile. V. Transcriptional and phenotypic features of tumor directed T cells in blood using a combination of phenotypic markers derived from COMET and cite-seq. Patients will be followed for 6 months from time of treatment initiation. After 6 months, patients do not need to be followed but standard of care scans and survival status can be assessed for up to 5 years. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05105100
Study type Observational
Source University of California, San Francisco
Contact Sonia Contreras Martinez
Phone (415) 514-6427
Email sonia.contrerasmartinez@ucsf.edu
Status Recruiting
Phase
Start date October 29, 2021
Completion date August 28, 2026

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