News Release

Homosexuality and maternal immune response

Peer-Reviewed Publication

Proceedings of the National Academy of Sciences

In a study of 142 women and 12 men, ages 18-80 years, researchers report higher concentrations of antibodies against the Y-linked protein NLGN4Y in blood samples from women compared with those from men, and higher concentrations of such antibodies in women with homosexual sons particularly homosexual sons with older brothers-compared with women with no sons or only heterosexual sons, suggesting an association between maternal immune response to NLGN4Y and sexual orientation in male offspring.


Article #17-05895: "Male homosexuality and maternal immune responsivity to the Y-linked protein NLGN4Y," by Anthony F. Bogaert et al.

MEDIA CONTACT: Anthony F. Bogaert, Brock University, St. Catherines, CANADA; tel: 905-688-5550, 905-341-8654; e-mail:

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