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- W3029127587 abstract "e13517 Background: Kinases activated by gene fusions represent an important class of oncogenes in solid tumors highlighted by the unique site agnostic FDA approval of larotrectinib for NTRK gene rearrangements. However, the frequency and types of druggable fusions in solid tumors are not well characterized from the clinical perspective. Methods: Oncofocus is a clinically validated precision oncology platform that includes analysis of 399 druggable driver-partner oncogenic fusion genes linked to 140 unique targeted therapy protocols. A retrospective analysis of Oncofocus trending data in a real-life cohort of 1111 patients has been used to determine the actionable fusion gene landscape in solid tumors. Results: Eighty nine actionable fusion genes were identified in 1111 samples of solid tumors linked to 73 targeted therapy protocols. Seven of the samples harbored multiple fusion genes. Eighty two of the 1111 samples tested had at least one actionable fusion gene representing a frequency of 7.38%. The highest frequency of actionable fusions were observed in glioblastoma (23%), head and neck (12%), kidney (11%) and prostate (10%) cancers. Four of the seven samples with multiple actionable fusions were found in glioblastoma. Pancreatic, lung and endometrial cancers and cancer of unknown primary (CUPs) had an actionable fusion gene frequency ranging from 7-9%. TBL1XR1-PIK3CA, MET-MET, WHSC1L1-FGFR1 and EGFR VIII fusions were identified as the most common druggable fusions. All actionable fusion genes were found to interact with one or more of the following pathways RAS/RAF/MEK/ERK, PI3K/AKT/MTOR, PLCy/PKC and JAK/STAT. Although a targeted agent for TRK fusions now has FDA approval, this rearrangement appears to be a rare event. In contrast, inhibitors targeting the TBL1XR1-PIK3CA, MET-MET, WHSC1L1-FGFR1 fusions and linked downstream signalling pathways appear to offer much broader clinical utility. Conclusions: Druggable fusions were identified at an unexpectedly high frequency and should therefore be included as part of routine comprehensive precision oncology testing. Notably, many of the actionable fusions are not tumor type specific reinforcing the “site agnostic” approach to profiling and supporting the concept of “molecular basket” clinical trials. Precision oncology trending data also provides actionable mutational landscapes which can be used to refine precision oncology testing, patient selection for targeted therapy protocols and enhancement of clinical trial design." @default.
- W3029127587 created "2020-06-05" @default.
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- W3029127587 date "2020-05-20" @default.
- W3029127587 modified "2023-10-17" @default.
- W3029127587 title "Druggable fusion gene landscape in solid tumors." @default.
- W3029127587 doi "https://doi.org/10.1200/jco.2020.38.15_suppl.e13517" @default.
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