How to log-transform OR and its SE in GWAS summary statistics

Question

[song628196]

Hi all, i'm doing some analysis on GWAS summary statistics which requires effect size and its Standard Error (SE). Some GWAS results provide Odds Ratio (OR) and its SE without log-transformation, how can i transform them into log scale?

AFAIK, OR does not follow normal distribution before log-transformation. Thus, the transformation of SE seems not that easy. I wish to learn from you about this question.

Thanks inadvance for your help!

[Kevin Blighe]

How was your data produced, and what is your next intended step for the analysis? Ultimately, why do you feel that you need to log transform these?