Proposed SRY test to determine athletes’ sex should be treated with caution

In the light of recent controversy about eligibility for male and female categories in sport, the International Olympic Committee has decided to set up a working group to look at gender eligibility issues. While this is necessary to address the arguments, the European Society of Human Genetics (ESHG) has a number of concerns about its potential outcome. Meanwhile several international and national sports federations and governing bodies have started to introduce mandatory sex testing or stricter eligibility rules.