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The rs594445 in MOCOS gene is associated with risk of autism spectrum disorder
Mohammad Taheri1, Rezvan Noroozi2, Kamyar Aghaei3
1Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abstract:
Molybdenum cofactor sulfurase (MOCOS) gene encodes an enzyme which is involved in purine metabolism. Recent experiments have shown down-regulation of MOCOS in adult nasal olfactory stem cells of individuals with autism spectrum disorder (ASD). In the current study, we genotyped two single nucleotide polymorphisms (SNPs) within coding regions of MOCOS gene (rs594445 and rs1057251) in 406 ASD patients and 411 age and sex-matched controls. The A allele of the rs594445 SNP was more prevalent among ASD cases compared with controls (OR (95% CI) = 1.33 (1.07-1.64), adjusted P value = 0.02). This SNP was associated with risk of ASD in co-dominant (AA vs. CC: OR (95% CI) = 2.00 (1.22-3.23), adjusted P value = 0.04) and recessive (AA vs. CC + AC: OR (95% CI) = 1.86 (1.16-2.98), adjusted P value = 0.02) models. The other SNP was not associated with risk of ASD in any inheritance model. There was no LD between rs594445 and rs1057251 SNPs (D' = 0.03, r2 = 0.14). The C T haplotype (rs594445 and rs1057251, respectively) had a protective role against ASD (OR (95% CI) = 0.76 (0.62-0.92), adjusted P value = 0.02). Other estimated haplotypes distributed equally between cases and controls. Based on the results of current study, the rs594445 SNP might be regarded as a risk locus for ASD in Iranian population.
Insights
Genetic variations in the Molybdenum Cofactor Sulfurase (MOCOS) gene are linked to autism spectrum disorder (ASD). The rs594445 SNP is identified as a potential risk factor for ASD in the Iranian population.
Area of Science:
- Genetics
- Neuroscience
- Metabolic Disorders
Background:
- The Molybdenum Cofactor Sulfurase (MOCOS) gene plays a role in purine metabolism.
- Previous research indicated MOCOS down-regulation in individuals with autism spectrum disorder (ASD).
Purpose of the Study:
- To investigate the association between MOCOS gene polymorphisms and ASD risk.
- To evaluate two specific single nucleotide polymorphisms (SNPs), rs594445 and rs1057251, in the MOCOS gene.
Main Methods:
- Genotyping of 406 ASD patients and 411 controls for MOCOS SNPs rs594445 and rs1057251.
- Statistical analysis using various inheritance models (co-dominant, recessive) and haplotype analysis.
- Linkage disequilibrium (LD) analysis between the two SNPs.
Main Results:
- The A allele of rs594445 was significantly more prevalent in ASD cases (OR = 1.33).
- This SNP showed association with ASD risk in co-dominant and recessive models (P < 0.05).
- The CT haplotype (rs594445 and rs1057251) demonstrated a protective effect against ASD (OR = 0.76, P = 0.02).
Conclusions:
- The rs594445 SNP in the MOCOS gene may represent a risk locus for ASD.
- These findings suggest a potential genetic link between MOCOS variations and ASD in the Iranian population.
- Further research is warranted to elucidate the functional impact of these genetic associations.
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