Computational protocol: Genetic polymorphisms of CYP3A4 among Chinese patients with steroid-induced osteonecrosis of the femoral head

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Protocol publication

[…] The genotype frequencies of each SNP in the control subjects were checked using the Hardy–Weinberg equilibrium (HWE). Data analysis was performed using SPSS version 16.0 statistical package (SPSS, Chicago, IL) and Microsoft Excel (Chicago, IL). The significance of the difference of alleles and genotype frequencies between the groups was tested using the chi-square method.[]P < 0.05 was considered to represent statistical significance. Differences in the distribution were analyzed using logistic regression. Odds ratios (ORs) and 95% confidence intervals (CIs) were tested using unconditional logistic regression analysis with adjustment for age and gender.[] The 3 genetic models (Dominant, Recessive, and Additive) were applied by PLINK software (Chicago, IL) ( to assess the association of single SNPs with the risk of steroid-induced ONFH. The analyses of linkage disequilibrium (LD), and haplotype construction was used by the Haploview software package (version 4.2) (Chicago, IL).[] […]

Pipeline specifications

Software tools SPSS, PLINK, Haploview
Applications Miscellaneous, GWAS
Chemicals Steroids