FGFR2-fusions define a clinically actionable molecular subset of pancreatic cancer

Autor: Leah Stein, Karthikeyan Murugesan, Julie W. Reeser, Zachary Risch, Michele R. Wing, Anoosha Paruchuri, Eric Samorodnitsky, Emily L. Hoskins, Thuy Dao, Amy Smith, Dat Le, Melissa A. Babcook, Yi Seok Chang, Matthew R. Avenarius, Muhammad Imam, Aharon G. Freud, Sameek Roychowdhury
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: npj Precision Oncology, Vol 8, Iss 1, Pp 1-7 (2024)
Druh dokumentu: article
ISSN: 2397-768X
DOI: 10.1038/s41698-024-00683-x
Popis: Abstract Genomic alterations in fibroblast growth factor receptor (FGFR) genes are present in a small number of metastatic pancreatic ductal adenocarcinomas (PDAC) and may represent an emerging subgroup of patients likely to benefit from FGFR targeted therapies. Here we present four FGFR2 fusion-positive metastatic PDAC patients who exhibited durable responses or disease control to FGFR kinase inhibitors. Utilizing our custom FGFR focused cell-free DNA assay, FGFR-Dx, we serially monitored variant allele fractions of FGFR2 fusions during FGFR inhibitor treatment and observed dynamic changes correlating with clinical responses. Genomic analysis of 30,229 comprehensively profiled pancreatic cancers revealed FGFR1-3 fusions in 245 cases, an incidence of 0.81%. FGFR fusions were generally mutually exclusive from other known oncogenes. Our findings provide clinical evidence for identifying and treating FGFR2 fusion-positive PDAC patients with FGFR targeted therapy.
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