Carcinogenesis, Teratogenesis & Mutagenesis ›› 2021, Vol. 33 ›› Issue (5): 334-337,344.doi: 10.3969/j.issn.1004-616x.2021.05.003

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Associations between MTHFR rs1801131 polymorphisms and non-syndromic cleft lips with or without cleft palates in a Han population, Chaoshan, China

LU Xuemei1,2, XU Mingyan1,3, LIU Tingying3, ZHANG Qiufang1, DENG Xiaoling2   

  1. 1. Affiliated Stomatological Hospital of Xiamen Medical College, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361003;
    2. Department of Basic Medical Science, School of Medicine, Xiamen University, Xiamen 361102, Fujian;
    3. Cleft Lip and Palate Treatment Centre of Second Affiliated Hospital of Shantou University Medical College, Shantou 515041, Guangdong, China
  • Received:2021-01-02 Revised:2021-05-10 Online:2021-09-30 Published:2021-10-09

Abstract: OBJECTIVE: To investigate associations between MTHFR rs1801131 polymorphisms and susceptibility to non-syndromic cleft lips with or without cleft palates (NSCL/P) in a Han population which was located in the Chaoshan area,China. METHODS: Peripheral blood samples from 357 NSCL/P children,199 fathers, 198 mothers and 354 healthy controls were collected. Genomic DNA samples were extracted and polymorphisms of the MTHFR rs1801131 was detected by matrix-assisted laser desorbed ionization time-offlight mass spectrometry (MALDI-TOF-MS). The chi-square test was used to compare the genotypes and allele frequencies between the case and the normal control groups. The transmission disequilibrium test (TDT) was conducted in the cleft case-parents trios. The family-based genetic analyses were completed by FBAT 2.0.2 software. The genotype frequency distributions of rs1801131 in both the case and control groups were in accordance with Hardy-Weinberg equilibrium. RESULTS: The case-control study showed that the genotype and allele distribution frequencies of the rs1801131 locus were not associated with risk of NSCL/P (P > 0.05), and there was no evidence of allele A or C transmission disequilibrium at rs1801131 in cleft case-parents trios (P > 0.05). Family-based association test (FBAT) analyses provided no evidence of NSCL/P risk with single allele A or C of rs1801131. CONCLUSION: Our study suggested that MTHFR rs1801131 polymorphisms were not associated with risk of NSCL/P in the study population.

Key words: MTHFR rs1801131, gene polymorphism, nonsyndromic cleft lip with or without cleft palate, association

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