Ontology highlight
ABSTRACT: Purpose
To overcome barriers to genomic testing for patients with rare cancers, we initiated a program to offer free clinical tumor genomic testing worldwide to patients with select rare cancer subtypes.Experimental design
Patients were recruited through social media outreach and engagement with disease-specific advocacy groups, with a focus on patients with histiocytosis, germ cell tumors (GCT), and pediatric cancers. Tumors were analyzed using the MSK-IMPACT next-generation sequencing assay with the return of results to patients and their local physicians. Whole-exome recapture was performed for female patients with GCTs to define the genomic landscape of this rare cancer subtype.Results
A total of 333 patients were enrolled, and tumor tissue was received for 288 (86.4%), with 250 (86.8%) having tumor DNA of sufficient quality for MSK-IMPACT testing. Eighteen patients with histiocytosis have received genomically guided therapy to date, of whom 17 (94%) have had clinical benefit with a mean treatment duration of 21.7 months (range, 6-40+). Whole-exome sequencing of ovarian GCTs identified a subset with haploid genotypes, a phenotype rarely observed in other cancer types. Actionable genomic alterations were rare in ovarian GCT (28%); however, 2 patients with ovarian GCTs with squamous transformation had high tumor mutational burden, one of whom had a complete response to pembrolizumab.Conclusions
Direct-to-patient outreach can facilitate the assembly of cohorts of rare cancers of sufficient size to define their genomic landscape. By profiling tumors in a clinical laboratory, results could be reported to patients and their local physicians to guide treatment. See related commentary by Desai and Subbiah, p. 2339.
SUBMITTER: Doe-Tetteh SA
PROVIDER: S-EPMC10330105 | biostudies-literature | 2023 Jul
REPOSITORIES: biostudies-literature
Doe-Tetteh Seyram A SA Camp Sabrina Y SY Reales Dalicia D Crowdis Jett J Noronha Anne Marie AM Wolff Bernadette B Alano Tina T Galle Jesse J Selcuklu S Duygu SD Viale Agnes A Socci Nicholas D ND Liu Ying L YL Tew William P WP Aghajanian Carol C Ladanyi Marc M He Meng Xiao MX AlDubayan Saud H SH Mazor Roei David RD Shpilberg Ofer O Hershkovitz-Rokah Oshrat O Riancho Jose A JA Hernandez Jose L JL Gonzalez-Vela M Carmen MC Buthorn Justin J JJ Wilson Manda M Webber Amy E AE Yabe Mariko M Petrova-Drus Kseniya K Rosenblum Marc M Durham Benjamin H BH Abdel-Wahab Omar O Berger Michael F MF Donoghue Mark T A MTA Kung Andrew L AL Glade Bender Julia J Shukla Neerav N NN Funt Samuel A SA Dogan Ahmet A Soslow Robert A RA Al-Ahmadie Hikmat H Feldman Darren R DR Van Allen Eliezer M EM Diamond Eli L EL Solit David B DB
Clinical cancer research : an official journal of the American Association for Cancer Research 20230701 13
<h4>Purpose</h4>To overcome barriers to genomic testing for patients with rare cancers, we initiated a program to offer free clinical tumor genomic testing worldwide to patients with select rare cancer subtypes.<h4>Experimental design</h4>Patients were recruited through social media outreach and engagement with disease-specific advocacy groups, with a focus on patients with histiocytosis, germ cell tumors (GCT), and pediatric cancers. Tumors were analyzed using the MSK-IMPACT next-generation seq ...[more]