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Inostroza V, Salamanca C, Recabarren AS, Pantoja R, Leiva N, Pardo R, Suazo J. Maternal genotypes of folate/one-carbon metabolism gene variants and nonsyndromic cleft lip with or without cleft palate risk in Chile. Eur J Oral Sci 2021; 129:e12813. [PMID: 34289180 DOI: 10.1111/eos.12813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 05/28/2021] [Accepted: 05/31/2021] [Indexed: 12/27/2022]
Abstract
The aim of this study was to evaluate, in a case-control design, the association between maternal genotypes for variants in 23 genes involved in folate/one-carbon metabolism and nonsyndromic cleft lip with or without cleft palate (NSCL/P) in a Chilean population. After applying several filters to an Illumina array, we extracted 175 single nucleotide polymorphisms (SNPs) from 150 mothers of NSCL/P cases and 150 control women. Association was evaluated using computed odds ratio (OR) with a 95% confidence interval (95% CI) in additive, recessive, and dominant models. After multiple comparison correction, only SNP rs4451422 (A>C), located 237 bp downstream of the gene encoding the human folylpolyglutamate synthetase (FPGS), maintained a significant association with NSCL/P in the offspring (OR 3.03; 95% CI 1.69-5.26). The variant rs4451422 is associated with a decrease in FPGS expression according to database annotation. Our results lead to a new hypothesis that a lower activity of FPGS enzyme reduces intracellular folate levels and increases the risk of an offspring having NSCL/P.
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Affiliation(s)
- Verónica Inostroza
- Department of Anatomy, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carlos Salamanca
- Institute for Research in Dental Sciences, School of Dentistry, Universidad de Chile, Santiago, Chile.,Research Center in Dental Sciences (CICO), Dental School, Universidad de La Frontera, Temuco, Chile.,Universidad Adventista de Chile, Chillán, Chile
| | - Andrea S Recabarren
- Institute for Research in Dental Sciences, School of Dentistry, Universidad de Chile, Santiago, Chile
| | - Roberto Pantoja
- Unit of Oral and Maxillofacial Surgery, Hospital Clínico San Borja-Arriaran, Santiago, Chile.,Department of Oral and Maxillofacial Surgery, School of Dentistry, Universidad de Chile, Santiago, Chile
| | - Noemí Leiva
- Unit of Maxillofacial Malformations, School of Dentistry, Universidad de Chile, Santiago, Chile
| | - Rosa Pardo
- Section of Genetics, Hospital Clínico Universidad de Chile, Santiago, Chile.,Unit of Neonatology, Hospital Clínico Universidad de Chile, Santiago, Chile.,Unit of Genetics, Hospital Dr. Sótero del Río, Santiago, Chile
| | - José Suazo
- Institute for Research in Dental Sciences, School of Dentistry, Universidad de Chile, Santiago, Chile
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