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The frequency of NRAS mutation in stool samples of Iranian colorectal cancers compared to Finnish patients.
BACKGROUND: Stools from colorectal cancer patients are noninvasive samples that could be used to compare the frequency of hotspot mutations between two different ethnic cohorts.
MATERIALS AND METHODS: We collected stool samples from the Iranian cohort (52 patients and 49 controls) and the Finnish cohort (40 patients and 14 controls). Following stool DNA extraction, we used the AmpliSeq Colon and Lung Cancer panel to prepare DNA libraries before sequencing.
RESULTS: The Iranian cohort exhibited 35 hotspot mutations in the BRAF , ERBB4 , FBXW7 , FGFR1 , FGFR3 , KRAS , MAP2K , MET , NRAS , PIK3C , SMAD4 , and TP53 genes. In the Finnish cohort, 13 hotspot mutations were found in the AKT1 , APC , KIT , KRAS , SMO , STK11 , and TP53 genes. Mutations in NRAS and FGFR3 were observed only in the Iranian cohort, while APC mutations were exclusive for the Finnish cohort.
CONCLUSION: Genes involved in MAPK and PI3K-MAPK pathways showed a higher frequency of mutations in Iranian patients which may have therapeutic implications.
MATERIALS AND METHODS: We collected stool samples from the Iranian cohort (52 patients and 49 controls) and the Finnish cohort (40 patients and 14 controls). Following stool DNA extraction, we used the AmpliSeq Colon and Lung Cancer panel to prepare DNA libraries before sequencing.
RESULTS: The Iranian cohort exhibited 35 hotspot mutations in the BRAF , ERBB4 , FBXW7 , FGFR1 , FGFR3 , KRAS , MAP2K , MET , NRAS , PIK3C , SMAD4 , and TP53 genes. In the Finnish cohort, 13 hotspot mutations were found in the AKT1 , APC , KIT , KRAS , SMO , STK11 , and TP53 genes. Mutations in NRAS and FGFR3 were observed only in the Iranian cohort, while APC mutations were exclusive for the Finnish cohort.
CONCLUSION: Genes involved in MAPK and PI3K-MAPK pathways showed a higher frequency of mutations in Iranian patients which may have therapeutic implications.
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