Open AccessThe prognostic role of c-MYC amplification in schistosomiasis-associated colorectal cancer
Author(s) -
Weiyu Pan,
Weixia Wang,
Jie Huang,
Kui Lu,
Sinian Huang,
Dongxian Jiang,
Dacheng Bu,
Jing Liu,
Hongyan Jing,
Junxia Yao,
Yingyong Hou
Publication year - 2020
Publication title -
japanese journal of clinical oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.768
H-Index - 85
eISSN - 1465-3621
pISSN - 0368-2811
DOI - 10.1093/jjco/hyz210
Subject(s) - colorectal cancer , medicine , oncology , schistosomiasis , metastasis , cancer , stage (stratigraphy) , fluorescence in situ hybridization , lymph node , immunology , biology , gene , paleontology , biochemistry , helminths , chromosome
Objective The purpose of this study was to explore the prognostic role of c-MYC amplification in colorectal cancer, particularly in schistosomiasis-associated colorectal cancer. Methods Three hundred and fifty four cases of colorectal cancer, which were from Qingpu Branch of Zhongshan Hospital affiliated to Fudan University, were retrospectively analyzed in a tissue microarray (TMA) format, with fluorescence in situ hybridization (FISH) assay and immunohistochemistry (IHC). Results c-MYC gene amplification was found in 14.1% (50 out of 354) of patients with colorectal cancer and was correlated with old age (P = 0.028), positive lymph node metastasis (P = 0.004) and advanced stage tumors (P = 0.002). The overexpression of c-MYC was closely associated with the amplification status (P = 0.023). Kaplan–Meier survival curves for overall survival (OS) showed a statistically significant difference for patients with c-MYC amplification in full cohort of colorectal cancer, stage III-IV set and patients with lymph node metastasis (P = 0.002, 0.034, 0.012, respectively). Further analysis found c-MYC amplification associated with poorer survival in the subgroup of colorectal cancer with schistosomiasis (CRC-S, P < 0.001), but not in colorectal cancer without schistosomiasis (CRC-NS, P = 0.155). By multivariate analysis, c-MYC amplification was an independent poor-prognostic factor in CRC-S set (P = 0.046). Conclusions Our study firstly found c-MYC amplification could predict poor prognosis in schistosomiasis-associated colorectal cancer, but not in colorectal cancer without schistosomiasis.