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- W2894047270 abstract "Background: Clinically innovative genomic diagnostics may expedite the selection of effective targeted therapies if the patient can be stratified correctly based on their unique cancer driven events/pathways during tumorigenesis. Aim: Here, we performed a pan-cancer analysis on the clinical utility of a targeted gene panel, ACTOnco+, in characterizing the prevalence of actionable mutations. Methods: A total of 229 formalin-fixed, paraffin-embedded (FFPE) tissues from 40 tumor types were subjected to next-generation sequencing (NGS) using the Ion Torrent Proton System. All coding exons in 440 cancer-related genes were assessed at average depth of > 800X. Therapeutic implications were based on information obtained from base substitutions, indels, and copy number alterations (CNAs). Results: 58.5% (n=134) patients harbored at least one actionable mutation while CNAs, including homozygous and heterozygous deletions, were detected in 83.9% (n=191) of patients. Across all tumor types, the most frequently altered pathway that can confer either sensitivity or resistance to targeted therapies was PI3K/AKT/mTOR signaling, contributed by PIK3CA and AKT1 activating mutations as well as NF1, NF2, PTEN, TSC1, STK11 and TSC2 inactivating mutations or deletions. In parallel, dysregulation of cell cycle was mostly owing to CCND1, CDK4 and CDK6 amplification and/or loss of CDKN2A. Notably, on top of BRCA1/ 2 mutations, deletion of BRCAness-related genes ( MRE11, RAD50, PALB2, FANCD2, ATM, ATR, CHEK1 and CHEK2) that may result in homologous recombination deficiency (HRD) was observed in 71.4% breast, 70.6% ovarian, 61.0% lung, 58.3% pancreatic, and 52.2% colorectal cancers. Other targetable alterations on receptor tyrosine kinase (RTK), angiogenic and hedgehog signaling pathways were also observed. Conclusion: A comprehensive pathway-based genomic profiling characterized significant actionable alterations across different solid tumors that may play a role in tissue-agnostic tailored treatment." @default.
- W2894047270 created "2018-10-05" @default.
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- W2894047270 date "2018-10-01" @default.
- W2894047270 modified "2023-10-17" @default.
- W2894047270 title "Clinical Targeted Next-Generation Sequencing to Identify Potentially Actionable Alterations in the Majority of Asian Cancer Patients" @default.
- W2894047270 doi "https://doi.org/10.1200/jgo.18.16600" @default.
- W2894047270 hasPublicationYear "2018" @default.
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