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Chinese and Europeans with acute myeloid leukemia have discordant mutation topographies.

Leukemia Research 2018 April 23
Although the topography of mutations in persons of predominately European-descent with acute myeloid leukemia (AML) is well-described this is less so in Asians. We studied AML-related mutations in 289 consecutive Chinese (mostly Han) with newly-diagnosed de novo AML. Full-length coding sequence of NPM1 and CEBPA, IDH1 and IDH2 hotspot mutations and WT1 mutations in exons 7 and 9 were analyzed by PCR as were correlations with clinical and laboratory variables. CEBPA mutations were detected in 20% of subjects (95% confidence interval [CI] 15, 25%), NPM1 mutations in 20% (15, 25%), IDH1 mutations in 4% (1, 6%), IDH2 mutations in 11% (7, 15%) and WT1 mutations in 6% (3, 9%). A comparison of these data with mutation frequencies in persons of predominately European-descent with AML indicates a higher frequency of CEBPA mutations, a similar frequency of IDH2 mutations and lower frequencies of NPM1, IDH1 and WT1 mutations. Our data indicate different topographies of AML-associated mutations in Chinese compared with persons of predominately European descent suggesting genetic background, life-style, environment and perhaps other variables may influence these differences.

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