The Val/Met and rs4633 variants showed nominally significant associations with SZ (P<0.05), although neither of the individual SNPs remained significant after adjusting for multiple testing (most significant P=0.1174).
DNA samples from 150 cases of EC and healthy controls (n = 165) were analyzed by PCR-RFLP to determine the genotypic frequency of four different polymorphic loci on COMT [codon 62 (rs4633), 102 (rs5031015), 136 (rs4818), 158 (rs4680)].
DNA samples from 150 cases of EC and healthy controls (n = 165) were analyzed by PCR-RFLP to determine the genotypic frequency of four different polymorphic loci on COMT [codon 62 (rs4633), 102 (rs5031015), 136 (rs4818), 158 (rs4680)].
The major findings of this study were that, among the individuals carrying the rs3751082 A allele in the ALDH3B1 gene, the rs4633 T allele in the COMT gene was associated with susceptibility to paranoid schizophrenia (p = .004), development of hallucination (p = 5.141 E-5), delay of P300 latency in both patients (p = .006) and control subjects (p = .02), and increased expression of the COMT gene in control subjects (p = .002).
The major findings of this study were that, among the individuals carrying the rs3751082 A allele in the ALDH3B1 gene, the rs4633 T allele in the COMT gene was associated with susceptibility to paranoid schizophrenia (p = .004), development of hallucination (p = 5.141 E-5), delay of P300 latency in both patients (p = .006) and control subjects (p = .02), and increased expression of the COMT gene in control subjects (p = .002).
Although several haplotype combinations showed significance, the combinations of G-T-G-G haplotype for rs6269, rs4633, rs4818 and rs4680 were only present in the MDD group (G-T 4.5%, corrected sim P=0.0001; G-T-G 3.87%, corrected sim P=0.001; G-T-G-G 3.3% corrected sim P=0.0025).
This study aimed to (1) examine if certain variants of the COMT genetic markers (rs6269, rs4633, rs4818 and rs4680) are more common in BN versus controls; (2) assess transmission of COMT alleles in BN families; and (3) explore the role of COMT genotypes and haplotypes in bulimic women with childhood ADHD history.
Our results reveal that the alleles of each SNP are not significantly correlated with pain perception except for the rs4633 allele in the 2 Hz TEAS session (P < 0.05).
However, COMT: rs4680: A>G and rs4633: C>T polymorphisms were found to significantly affect PD risk, and the MTHFR 677C>T polymorphism helped determine plasma Hcy concentrations.
Association analysis of individual SNPs adjusted for covariates revealed association of rs4633 and rs4680 with post treatment improvement in VAS LBP (p = 0.02, mean difference (β) = 13.5 and p = 0.02, β = 14.2 respectively).
The CC genotype of rs4633 (C/T) and the GG genotype of rs4680 (G/A) showed a significantly higher degree of PAI and the association remained positive after adjustment for age, hypertension, diabetes, smoking and drinking (p=0.035 and p=0.031, respectively).
This study was aimed at the evaluation of the relationship between genetic polymorphisms of catechol-O-methyltransferase (COMT) (rs4680:A > G-Val158Met, rs6269:A > G, rs4633:C > T, rs4818:C > G) and pain sensitivity after lumbar discectomy.
In the overall sample, rs4633 and rs4680 were significantly associated with morphine use, whereas rs4818 was associated with time-averaged pain scores.
Statistically significant associations were found between COMT rs4633 and rs4680 genotypes and the amount of morphine self-administered through a patient-controlled analgesia pump.
Although allele and genotype frequencies did not differ among groups, the rs4633 CT genotype was not associated with the presence of FM following adjustment for age and sex (OR = 0.745; 95% CI: 0.558, 0.995; p = 0.046).
The frequencies of rs4633 T carriers, rs4680 A carriers and the two linked rs4633-rs4680 T/A carriers were significantly higher in the early onset PD group than in the healthy controls (all <i>P</i> < 0.05).
CONCLUSIONS Taken together, T-77C and Arg399Gln polymorphisms of the XRCC1 gene, as well as the 186C>T and Val158Met polymorphisms of the COMT gene, increased the risk of lung cancer in non-smoking women, with the factors of occupation type, cooking-oil fumes, and soot exposures representing key contributing factors.
We have identified a significant SNP of COMT, rs4633, which is associated with symptomatic LDH in a large Chinese Han-based sample of the study subjects.