Does azathioprine cause cause birth defects in men?

Data presented on : This site http://www.Ncbi.Nlm.Nih.Gov/m/pubmed/15023170/ suggest an ⬆ed risk of congenital abnormalities. Since affected progeny had the same disorders as their fathers, a causal association with an immunosuppressant could not be proven. Please consult your wife's ob-gyn & request a pre-pregnancy visit with a prenatal genetic counselor to assist you in decision-making.