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• W3212367056 abstract "Chronic pancreatitis is associated with an increased risk of developing pancreatic cancer, and patients with inherited forms of pancreatitis are at greatest risk. We investigated whether clinical severity of pancreatitis could also be an indicator of cancer risk independent of etiology by performing targeted DNA sequencing to assess the mutational burden in 55 cancer-associated genes.Using picodroplet digital polymerase chain reaction and next-generation sequencing, we reported the genomic profiles of pancreases from severe clinical cases of chronic pancreatitis that necessitated palliative total pancreatectomy with islet autotransplantation.We assessed 57 tissue samples from 39 patients with genetic and idiopathic etiologies and found that despite the clinical severity of disease, there was no corresponding increase in mutational burden. The average allele frequency of somatic variants was 1.19% (range 1.00%-5.97%), and distinct regions from the same patient displayed genomic heterogeneity, suggesting that these variants are subclonal. Few oncogenic KRAS mutations were discovered (7% of all samples), although we detected evidence of frequent cancer-related variants in other genes such as TP53, CDKN2A, and SMAD4. Of note, tissue samples with oncogenic KRAS mutations and samples from patients with PRSS1 mutations harbored an increased total number of somatic variants, suggesting that these patients may have increased genomic instability and could be at an increased risk of developing pancreatic cancer.Overall, we showed that even in those patients with chronic pancreatitis severe enough to warrant total pancreatectomy with islet autotransplantation, pancreatic cancer-related mutational burden is not appreciably increased." @default.
• W3212367056 created "2021-11-22" @default.
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• W3212367056 date "2021-11-01" @default.
• W3212367056 modified "2023-10-10" @default.
• W3212367056 title "Pancreatic Cancer–Related Mutational Burden Is Not Increased in a Patient Cohort With Clinically Severe Chronic Pancreatitis" @default.
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• W3212367056 doi "https://doi.org/10.14309/ctg.0000000000000431" @default.
• W3212367056 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8604013" @default.
• W3212367056 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34797250" @default.
• W3212367056 hasPublicationYear "2021" @default.
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