Dataset Information

Identification of NUDT15 gene variants in Amazonian Amerindians and admixed individuals from northern Brazil.

ABSTRACT: INTRODUCTION:The nudix hydrolase 15 (NUDT15) gene acts in the metabolism of thiopurine, by catabolizing its active metabolite thioguanosine triphosphate into its inactivated form, thioguanosine monophosphate. The frequency of alternative NUDT15 alleles, in particular those that cause a drastic loss of gene function, varies widely among geographically distinct populations. In the general population of northern Brazilian, high toxicity rates (65%) have been recorded in patients treated with the standard protocol for acute lymphoblastic leukemia, which involves thiopurine-based drugs. The present study characterized the molecular profile of the coding region of the NUDT15 gene in two groups, non-admixed Amerindians and admixed individuals from the Amazon region of northern Brazil. METHODS:The entire NUDT15 gene was sequenced in 64 Amerindians from 12 Amazonian groups and 82 admixed individuals from northern Brazil. The DNA was extracted using phenol-chloroform. The exome libraries were prepared using the Nextera Rapid Capture Exome (Illumina) and SureSelect Human All Exon V6 (Agilent) kits. The allelic variants were annotated in the ViVa® (Viewer of Variants) software. RESULTS:Four NUDT15 variants were identified: rs374594155, rs1272632214, rs147390019, andrs116855232. The variants rs1272632214 and rs116855232 were in complete linkage disequilibrium, and were assigned to the NUDT15*2 genotype. These variants had high frequencies in both our study populations in comparison with other populations catalogued in the 1000 Genomes database. We also identified the NUDT15*4 haplotype in our study populations, at frequencies similar to those reported in other populations from around the world. CONCLUSION:Our findings indicate that Amerindian and admixed populations from northern Brazil have high frequencies of the NUDT15 haplotypes that alter the metabolism profile of thiopurines.

SUBMITTER: Rodrigues JCG

PROVIDER: S-EPMC7159207 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Identification of NUDT15 gene variants in Amazonian Amerindians and admixed individuals from northern Brazil.

Rodrigues Juliana Carla Gomes JCG Souza Tatiane Piedade de TP Pastana Lucas Favacho LF Ribeiro Dos Santos André Maurício AM Fernandes Marianne Rodrigues MR Pinto Pablo P Wanderley Alayde Vieira AV Souza Sandro José de SJ Kroll José Eduardo JE Pereira Adenilson Leão AL Magalhães Leandro L Mercês Laís Reis das LRD Vidal Amanda Ferreira AF Vinasco-Sandoval Tatiana T Cavalcante Giovanna Chaves GC Guerreiro João Farias JF Assumpção Paulo Pimentel de PP Ribeiro-Dos-Santos Ândrea Â Santos Sidney S Santos Ney Pereira Carneiro Dos NPCD

PloS one 20200415 4

<h4>Introduction</h4>The nudix hydrolase 15 (NUDT15) gene acts in the metabolism of thiopurine, by catabolizing its active metabolite thioguanosine triphosphate into its inactivated form, thioguanosine monophosphate. The frequency of alternative NUDT15 alleles, in particular those that cause a drastic loss of gene function, varies widely among geographically distinct populations. In the general population of northern Brazilian, high toxicity rates (65%) have been recorded in patients treated wit ...[more]

PMID: 32294118

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Dataset Information

Identification of NUDT15 gene variants in Amazonian Amerindians and admixed individuals from northern Brazil.

Publications

Identification of NUDT15 gene variants in Amazonian Amerindians and admixed individuals from northern Brazil.

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