The Evolutionary Origins of Recurrent Pancreatic Cancer.
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ID: 100849
2020
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Abstract
Surgery is the only curative option for Stage I/II pancreatic cancer, nonetheless most patients will recur after surgery and die of their disease. To identify novel opportunities for management of recurrent pancreatic cancer we performed whole exome or targeted sequencing of 10 resected primary cancers and matched intrapancreatic recurrences or distant metastases. We identified that recurrent disease after adjuvant or first-line platinum therapy corresponds to an increased mutational burden. Recurrent disease is enriched for genetic alterations predicted to activate Mapk/Erk and PI3K/AKT signaling and develops from a monophyletic or polyphyletic origin. Treatment induced genetic bottlenecks lead to a modified genetic landscape and subclonal heterogeneity for driver gene alterations in part due to intermetastatic seeding. In one patient what was believed to be recurrent disease was an independent (second) primary tumor. These findings suggest routine post-treatment sampling may have value in the management of recurrent pancreatic cancer.
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sakamoto2020thecancer
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| Authors | Sakamoto, Hitomi;Attiyeh, Marc A;Gerold, Jeffrey M;Makohon-Moore, Alvin P;Hayashi, Akimasa;Hong, Jungeui;Kappagantula, Rajya;Zhang, Lance;Melchor, Jerry P;Reiter, Johannes G;Heyde, Alexander;Bielski, Craig M;Penson, Alexander V;Gonen, Mithat;Chakravarty, Debyani;O'Reilly, Eileen M;Wood, Laura D;Hruban, Ralph H;Nowak, Martin A;Socci, Nicholas D;Taylor, Barry S;Iacobuzio-Donahue, Christine A; |
| Journal | Cancer Discovery |
| Year | 2020 |
| DOI |
CD-19-1508
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