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Table 1 Genotype and allele frequencies of the six known SNPs and association analysis between the patient (n = 356) and control (n = 386) groups

From: Genetic analysis of GABRB3 as a candidate gene of autism spectrum disorders

Location

SNP ID

Group

Allele (1/2)

Genotype counts (frequency)

P(df = 2)

Allele counts (frequency)

P(df = 1)

Power (df = .1)

1/1

1/2

2/2

1

2

5′ region

rs4906902

ASD

T/C

168 (0.472)

140 (0.393)

48 (0.135)

0.304

476 (0.669)

236 (0.332)

0.226

37.4%

Control

161 (0.417)

171 (0.443)

54 (0.140)

493 (0.639)

279 (0.361)

 

rs8179184

ASD

G/A

168 (0.472)

141 (0.396)

47 (0.132)

0.342

477 (0.670)

235 (0.330)

0.244

37.3%

Control

162 (0.420)

171 (0.443)

53 (0.137)

495 (0.641)

277 (0.359)

 

rs20317

ASD

C/G

167 (0.470)

140 (0.393)

49 (0.138)

0.327

474 (0.666)

238 (0.334)

0.347

37.6%

Control

162 (0.420)

172 (0.446)

52 (0.135)

496 (0.643)

276 (0.357)

 

Exon 1a

rs20318

ASD

C/T

167 (0.470)

139 (0.390)

50 (0.140)

0.220

473 (0.664)

239 (0.336)

0.406

37.7%

Control

161 (0.417)

175 (0.453)

50 (0.130)

497 (0.644)

275 (0.356)

 

Intron 3

rs8179186

ASD

C/T

168 (0.472)

141 (0.396)

47 (0.132)

0.367

477 (0.670)

235 (0.330)

0.289

37.4%

Control

163 (0.422)

171 (0.443)

52 (0.135)

497 (0.644)

275 (0.356)

 

Intron 8

rs3751582

ASD

G/A

195 (0.548)

126 (0.354)

35 (0.098)

0.013

516 (0.725)

196 (0.275)

0.131

34.0%

Control

217 (0.562)

152 (0.394)

17 (0.044)

586 (0.759)

186 (0.241)

 
  1. Power indicates the estimates of power of risk alleles to detect the association with ASD under the assumptions of multiplicative inheritance mode, genotype relative risk (Aa) = 1.2, prevalence of disease = 0.01, D’ = 1 and P-value of 0.05 under null hypothesis. df indicates degree of freedom. ASD, autism spectrum disorders.