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Clinical Trial Summary

Melanoma in-transit metastases (ITMs) continue to represent a therapeutic dilemma, in that no standard method of treatment has been uniformly adopted. The complexity and heterogeneity of patient and disease characteristics, including the location and number of ITMs presents a barrier to a one size fits all treatment approach. Treatment of patients with limited regional disease remains challenging. Patients are typically treated with a combination of surgery, regional therapy, systemic therapy. Data on the management of ITMs is limited, even with the availability of immunotherapy (IMT). This study will use the unique etiology of ITMs to facilitate the understanding of how individual lesions metabolically and immunologically evolve as they move away from the primary tumor site. It is hypothesize that as ITMs move away from the primary melanoma site each will harbor progressively hypermetabolic tumor cells and a harsher microenvironment.


Clinical Trial Description

This study will use a novel platform to profile patient biopsies, including microscopic analysis, flow cytometry for phenotyping, metabolic, and functional analyses, and metabolic profiling by Seahorse analysis to understand the unique etiology of ITMs to understand how individual melanoma lesions metabolically and immunologically evolve as they move away from the primary tumor site. A large amount of translational data is able to be derived from from an individual tissue biopsies. This study will utilize this platform to extensively evaluate 2-5 (melanoma) in-transit metastases (ITMs) per patient. It is hypothesized that as ITMs move away from the primary melanoma site each will harbor progressively hypermetabolic tumor cells and a harsher microenvironment. Each ITM station will be deeply profiled using metabolic assays, flow cytometry, and highly multiplexed immunofluorescent microscopy including, to interrogate the metabolic profiles of tumor and immune system in individual melanoma ITMs, and, to Determine tumor:immune interaction in the context of hypoxia using high-dimensional imaging. Using high throughput sequencing technologies, it will determined how tumor and immune cells interact and evolve during the course of transit in ITMs (as these cells become more metabolically and immunologically suppressive as they migrate further from the primary site). The clonal evolution analysis of tumor cells through and pimonidazole-enabled single cell RNA-sequencing will be used to identify transcriptomic changes in tumor, immune, and stromal cells correlated with hypoxia exposure. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04658303
Study type Observational
Source University of Pittsburgh
Contact Amy Rose, RN, BSN
Phone 412-647-8587
Email kennaj@upmc.edu
Status Recruiting
Phase
Start date February 24, 2021
Completion date March 2027

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