Association of common genetic variants with vitamin D status in Malaysian children with epilepsy
Purpose: Children with epilepsy (CWE) are at risk of vitamin D deficiency. Single nucleotide polymorphisms (SNPs) affecting the vitamin D pathway are potentially important risk factors for serum 25-hydroxyvitamin D 25(OH)D] concentration. The aims of our study were to evaluate the association of vit...
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my.um.eprints.365822023-12-01T06:39:24Z http://eprints.um.edu.my/36582/ Association of common genetic variants with vitamin D status in Malaysian children with epilepsy Kong, Ann Nie Fong, Choong Yi Ng, Ching Ching Mohamed, Ahmad Rithauddin Khoo, Teik Beng Ng, Rui Lun Jalaludin, Muhammad Yazid Nadarajaw, Thiyagar RJ Pediatrics Child health. Child health services Purpose: Children with epilepsy (CWE) are at risk of vitamin D deficiency. Single nucleotide polymorphisms (SNPs) affecting the vitamin D pathway are potentially important risk factors for serum 25-hydroxyvitamin D 25(OH)D] concentration. The aims of our study were to evaluate the association of vitamin D-related SNPs to serum 25(OH)D concentrations in Malaysian CWE. Methods: Cross-sectional study of Malaysian ambulant CWE on antiseizure medication for > 1 year. Sixteen SNPs in 8 genes (GC, VDR, CYP2R1, CYP24A1, CYP27B1, CYP27A1, CYP3A4, NADSYN1/DHCR7) were genotyped. Linear and logistic regression models and co-variates adjusted analyses were used. SNPs with significant associations were further analysed in a group of ethnically-matched healthy Malaysian children. Results: 239 CWE were recruited (52.7% Malay, 24.3% Chinese and 23.0% Indian) with mean serum 25(OH)D of 58.8 nmol/L (SD 25.7). Prevalence of vitamin D deficiency (<= 37.5 nmol/L) was 23.0%. Minor allele of GC-rs4588-A was associated with lower serum 25(OH)D in the meta-analysis of both CWE (beta-8.11, P = 0.002) and Malaysian healthy children (beta-5.08, P < 0.001), while VDR-rs7975232-A was significantly associated with reduced odds of vitamin D deficiency in Malay subgroup of CWE (OR: 0.16; 95% CI: 0.06-0.49; P = 0.001) and this association was not found in the healthy children group. Conclusions: Our results suggest that GC-rs4588 is associated with lower serum 25(OH)D concentration in both Malaysian CWE and healthy children, while VDR-rs7975232A is associated with lower risk of vitamin D deficiency in Malaysian CWE of Malay ethnicity. Our findings may assist in the genetic risk stratification of low vitamin D status among CWE. W.B. Saunders Ltd 2020-07 Article PeerReviewed Kong, Ann Nie and Fong, Choong Yi and Ng, Ching Ching and Mohamed, Ahmad Rithauddin and Khoo, Teik Beng and Ng, Rui Lun and Jalaludin, Muhammad Yazid and Nadarajaw, Thiyagar (2020) Association of common genetic variants with vitamin D status in Malaysian children with epilepsy. Seizure-European Journal of Epilepsy, 79. pp. 103-111. ISSN 1059-1311, DOI https://doi.org/10.1016/j.seizure.2020.05.009 <https://doi.org/10.1016/j.seizure.2020.05.009>. 10.1016/j.seizure.2020.05.009 |
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RJ Pediatrics Child health. Child health services Kong, Ann Nie Fong, Choong Yi Ng, Ching Ching Mohamed, Ahmad Rithauddin Khoo, Teik Beng Ng, Rui Lun Jalaludin, Muhammad Yazid Nadarajaw, Thiyagar Association of common genetic variants with vitamin D status in Malaysian children with epilepsy |
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Purpose: Children with epilepsy (CWE) are at risk of vitamin D deficiency. Single nucleotide polymorphisms (SNPs) affecting the vitamin D pathway are potentially important risk factors for serum 25-hydroxyvitamin D 25(OH)D] concentration. The aims of our study were to evaluate the association of vitamin D-related SNPs to serum 25(OH)D concentrations in Malaysian CWE. Methods: Cross-sectional study of Malaysian ambulant CWE on antiseizure medication for > 1 year. Sixteen SNPs in 8 genes (GC, VDR, CYP2R1, CYP24A1, CYP27B1, CYP27A1, CYP3A4, NADSYN1/DHCR7) were genotyped. Linear and logistic regression models and co-variates adjusted analyses were used. SNPs with significant associations were further analysed in a group of ethnically-matched healthy Malaysian children. Results: 239 CWE were recruited (52.7% Malay, 24.3% Chinese and 23.0% Indian) with mean serum 25(OH)D of 58.8 nmol/L (SD 25.7). Prevalence of vitamin D deficiency (<= 37.5 nmol/L) was 23.0%. Minor allele of GC-rs4588-A was associated with lower serum 25(OH)D in the meta-analysis of both CWE (beta-8.11, P = 0.002) and Malaysian healthy children (beta-5.08, P < 0.001), while VDR-rs7975232-A was significantly associated with reduced odds of vitamin D deficiency in Malay subgroup of CWE (OR: 0.16; 95% CI: 0.06-0.49; P = 0.001) and this association was not found in the healthy children group. Conclusions: Our results suggest that GC-rs4588 is associated with lower serum 25(OH)D concentration in both Malaysian CWE and healthy children, while VDR-rs7975232A is associated with lower risk of vitamin D deficiency in Malaysian CWE of Malay ethnicity. Our findings may assist in the genetic risk stratification of low vitamin D status among CWE. |
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Article |
author |
Kong, Ann Nie Fong, Choong Yi Ng, Ching Ching Mohamed, Ahmad Rithauddin Khoo, Teik Beng Ng, Rui Lun Jalaludin, Muhammad Yazid Nadarajaw, Thiyagar |
author_facet |
Kong, Ann Nie Fong, Choong Yi Ng, Ching Ching Mohamed, Ahmad Rithauddin Khoo, Teik Beng Ng, Rui Lun Jalaludin, Muhammad Yazid Nadarajaw, Thiyagar |
author_sort |
Kong, Ann Nie |
title |
Association of common genetic variants with vitamin D status in Malaysian children with epilepsy |
title_short |
Association of common genetic variants with vitamin D status in Malaysian children with epilepsy |
title_full |
Association of common genetic variants with vitamin D status in Malaysian children with epilepsy |
title_fullStr |
Association of common genetic variants with vitamin D status in Malaysian children with epilepsy |
title_full_unstemmed |
Association of common genetic variants with vitamin D status in Malaysian children with epilepsy |
title_sort |
association of common genetic variants with vitamin d status in malaysian children with epilepsy |
publisher |
W.B. Saunders Ltd |
publishDate |
2020 |
url |
http://eprints.um.edu.my/36582/ |
_version_ |
1784511825980686336 |
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13.159267 |