Abstract
We performed integrated genomic, transcriptomic, and proteomic profiling of 150 pancreatic ductal adenocarcinoma (PDAC) specimens, including samples with characteristic low neoplastic cellularity. Deep whole-exome sequencing revealed recurrent somatic mutations in KRAS, TP53, CDKN2A, SMAD4, RNF43, ARID1A, TGFβR2, GNAS, RREB1, and PBRM1. KRAS wild-type tumors harbored alterations in other oncogenic drivers, including GNAS, BRAF, CTNNB1, and additional RAS pathway genes. A subset of tumors harbored multiple KRAS mutations, with some showing evidence of biallelic mutations. Protein profiling identified a favorable prognosis subset with low epithelial-mesenchymal transition and high MTOR pathway scores. Associations of non-coding RNAs with tumor-specific mRNA subtypes were also identified. Our integrated multi-platform analysis reveals a complex molecular landscape of PDAC and provides a roadmap for precision medicine.
Original language | English (US) |
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Pages (from-to) | 185-203.e13 |
Journal | Cancer cell |
Volume | 32 |
Issue number | 2 |
DOIs | |
State | Published - Aug 14 2017 |
Funding
We are grateful to all patients and families who contributed to this study. This work was supported by the following grants from the NIH: U54 HG003273, U54 HG003067, U54 HG003079, U24 CA143799, U24 CA143835, U24 CA143840, U24 CA143843, U24 CA143845, U24 CA143848, U24 CA143858, U24 CA143866, U24 CA143867, U24 CA143882, U24 CA143883, U24 CA144025, U24 CA211000, SPORE CA62924, P50 CA127003, and P30 CA016672. B.J. Raphael is a co-founder and consultant of Medley Genomics. R. Hruban receives royalty payments from Myriad Genetics for the PalB2 invention and is on the board of MiDiagnostics in a relationship overseen by Johns Hopkins University. M. Meyerson and A. Cherniack receive research funding from Bayer A.G. D.J. Weisenberger is a consultant for Zymo Research Corporation. E.A.G is an employee of GenomeDX Biosciences.
Keywords
- genomics
- heterogeneity
- KRAS
- miRNA
- molecular subtypes
- pancreatic cancer
- PDAC
- RPPA
- TCGA
- tumor cellularity
ASJC Scopus subject areas
- Oncology
- Cancer Research