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. 2016 Feb 1;3(1):42-8.
doi: 10.18632/oncoscience.290. eCollection 2016.

Early onset esophageal adenocarcinoma: a distinct molecular entity?

Anna M J van Nistelrooij  1 , Ronald van Marion  2 ; PALGA-group; Katharina Biermann  2 , Manon C W Spaander  3 , J Jan B van Lanschot  4 , Bas P L Wijnhoven  4 , Winand N M Dinjens  2
Affiliations

Early onset esophageal adenocarcinoma: a distinct molecular entity?

Anna M J van Nistelrooij et al. Oncoscience. .

Abstract

Esophageal adenocarcinoma (EAC) is typically diagnosed in elderly with a median age of 68 years. The incidence of EAC has been rising over the last decades, also among young adults. The aim of the study was to investigate whether early onset EAC is a distinct molecular entity. To identify early onset EACs, the nationwide network and registry of histo- and cytopathology in the Netherlands (PALGA) was searched. Twenty-eight tumors of patients aged ≤40 years were selected and matched with 27 tumors of patients aged ≥68 years. DNA was isolated from surgically resected specimen and sequenced on the Ion Torrent Personal Genome Machine with the Ion AmpliSeq Cancer Panel. No differences in mutational load between early onset and conventional EACs were observed (P=0.196). The most frequently mutated genes were TP53 (73%) and P16 (16%). Additional mutations in early onset EACs occurred exclusively in: APC, CDH1, CTNNB1, FGFR2, and STK11. In the conventional EACs additional mutations were exclusively identified in: ABL1, FBXW7, GNA11, GNAS, KRAS, MET, SMAD4, and VHL. Additional mutations besides TP53 and P16 seem to occur in different genes related to cell fate pathways for early onset EACs, while the additional mutations in conventional EACs are related to survival pathways.

Keywords: early onset cancer; esophageal adenocarcinoma; molecular analysis.

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Conflict of interest statement

CONFLICTS OF INTEREST

None declared.

Figures

Figure 1
Figure 1. Mutations identified in early onset EACs and conventional EACs classified to cell signaling pathways
See this image and copyright information in PMC

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