Please use this identifier to cite or link to this item: https://doi.org/10.1038/bjc.2013.109
Title: KRAS and BRAF mutations are rare and related to DNA mismatch repair deficiency in gastric cancer from the East and the West: Results from a large international multicentre study
Authors: Van Grieken, N.C.T.
Aoyma, T.
Chambers, P.A.
Bottomley, D.
Ward, L.C.
Inam, I.
Buffart, T.E.
Das, K. 
Lim, T.
Pang, B.
Zhang, S.L.
Tan, I.B.
Carvalho, B.
Heideman, D.A.M.
Miyagi, Y.
Kameda, Y.
Arai, T.
Meijer, G.A.
Tsuburaya, A.
Tan, P. 
Yoshikawa, T.
Grabsch, H.I.
Issue Date: 16-Apr-2013
Citation: Van Grieken, N.C.T., Aoyma, T., Chambers, P.A., Bottomley, D., Ward, L.C., Inam, I., Buffart, T.E., Das, K., Lim, T., Pang, B., Zhang, S.L., Tan, I.B., Carvalho, B., Heideman, D.A.M., Miyagi, Y., Kameda, Y., Arai, T., Meijer, G.A., Tsuburaya, A., Tan, P., Yoshikawa, T., Grabsch, H.I. (2013-04-16). KRAS and BRAF mutations are rare and related to DNA mismatch repair deficiency in gastric cancer from the East and the West: Results from a large international multicentre study. British Journal of Cancer 108 (7) : 1495-1501. ScholarBank@NUS Repository. https://doi.org/10.1038/bjc.2013.109
Abstract: Background:Inhibitors of the epidermal growth factor (EGFR) signaling pathway have a major role in the treatment of KRAS wild-type colorectal cancer patients. The EGFR pathway has been shown to be activated in gastric cancer (GC). However, published data on KRAS and BRAF mutation status is limited in GC and has not been compared between GC from different geographic regions.Methods:The prevalence of KRAS and BRAF mutations was established in 712 GC: 278 GC from the United Kingdom, 230 GC from Japan and 204 GC from Singapore. The relationship between KRAS/BRAF mutation status, DNA mismatch repair (MMR) status, clinicopathological variables and overall survival was analysed.Results:Overall, 30 (4.2%) GC carried a KRAS mutation. In total, 5.8% of the UK GC, 4% of Japan GC and 1.5% of Singapore GC were KRAS mutant. KRAS mutant GC had fewer lymph node metastases in the UK cohort (P=0.005) and were more frequent in elderly patients in the Japan cohort (P=0.034). KRAS mutations were more frequent in MMR-deficient GC in the UK and the Japanese cohort (P
Source Title: British Journal of Cancer
URI: http://scholarbank.nus.edu.sg/handle/10635/110151
ISSN: 00070920
DOI: 10.1038/bjc.2013.109
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