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Review
Understanding the Genetic Landscape of Pancreatic Ductal Adenocarcinoma to Support Personalized Medicine: A Systematic Review.
Cancers 2023 December 22
Pancreatic ductal adenocarcinoma (PDAC) is one of the most fatal malignancies worldwide. While population-wide screening recommendations for PDAC in asymptomatic individuals are not achievable due to its relatively low incidence, pancreatic cancer surveillance programs are recommended for patients with germline causative variants in PDAC susceptibility genes or a strong family history. In this study, we sought to determine the prevalence and significance of germline alterations in major genes ( ATM , BRCA1 , BRCA2 , CDKN2A , EPCAM , MLH1 , MSH2 , MSH6 , PALB2 , PMS2 , STK11 , TP53 ) involved in PDAC susceptibility. We performed a systematic review of PubMed publications reporting germline variants identified in these genes in PDAC patients. Overall, the retrieved articles included 1493 PDAC patients. A high proportion of these patients ( n = 1225/1493, 82%) were found to harbor alterations in genes ( ATM , BRCA1 , BRCA2 , PALB2 ) involved in the homologous recombination repair (HRR) pathway. Specifically, the remaining PDAC patients were reported to carry alterations in genes playing a role in other cancer pathways ( CDKN2A , STK11 , TP53 ; n = 181/1493, 12.1%) or in the mismatch repair (MMR) pathway ( MLH1 , MSH2 , MSH6 , PMS2 ; n = 87/1493, 5.8%). Our findings highlight the importance of germline genetic characterization in PDAC patients for better personalized targeted therapies, clinical management, and surveillance.
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