Scientific Reports (Jul 2024)

Socioeconomic disparities and the genomic landscape of gastric cancer

  • Daniel Zanabria,
  • Marco Galvez-Nino,
  • Jhajaira M. Araujo,
  • Alejandro Alfaro,
  • Williams Fajardo,
  • Luis Saravia,
  • Lidia Quispe,
  • Gina Velazque,
  • Junior Carbajal,
  • María J. López,
  • Sergio Jimenez,
  • Paola Montenegro,
  • Alejandra Zevallos,
  • Maria de los Angeles Clavo,
  • Paula Medina-Pérez,
  • Melanie Cornejo,
  • María Requena,
  • Alfredo Aguilar,
  • Joseph A. Pinto

DOI
https://doi.org/10.1038/s41598-024-65912-6
Journal volume & issue
Vol. 14, no. 1
pp. 1 – 11

Abstract

Read online

Abstract The genomic characteristics of Peruvian patients with gastric adenocarcinoma from diverse socioeconomic backgrounds were examined in consideration of the possibility that patients from different socioeconomic backgrounds may be exposed to different risk factors. We conducted a prospective pilot study in two Peruvian cities (Lima and Ica). This study enrolled 15 patients from low socioeconomic status (LSES) and 15 patients from medium/high socioeconomic status (MHSES). The genomic profiling of gastric adenocarcinoma samples was done through the FoundationOne CDx platform. We compared the genomic characteristics and the need for targeted therapy and immunotherapy between LSES and MHSES. The genes with higher rates of alterations were TP53 (73.3% vs. 50.0%, P = 0.2635); CDH1 (26.7% vs. 28.6%, P = 1); CDKN2A (20.0% vs. 28.6%, P = 1); KRAS (33.3% vs. 7.1%, P = 0.1686); ARID1A (20.0% vs. 14.3%, P = 1); MLL2 (13.3% vs. 21.4%, P = 1) and SOX9 (33.3% vs. 0.0%, P = 0.0421) in LSES versus HMSES, respectively. There was no significant difference in tumor mutational burden (P = 0.377) or microsatellite status (P = 1). The LSES group had a higher need for targeted therapy or immunotherapy according to gene involvement and alterations. A significant genomic difference exists among patients with gastric adenocarcinoma of different socioeconomic status, which may result in a different need for targeted therapy and immunotherapy.

Keywords