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The IOC emphasizes that now all female athletes wishing to compete in women's categories will have to undergo a one-time test for the presence of the SRY gene (Sex-determining Region Y). This gene, which is typically found on the Y chromosome and is responsible for the development of male characteristics, will be tested through a cheek swab. "As someone who once participated in sports, I am confident in every Olympian's right to fair competition. Our policy is based on scientific data and developed with the involvement of medical experts. Even the slightest difference can play a key role in the outcome of a competition. Therefore, it is completely unacceptable for biological males to compete in women's categories, as it may be unsafe," noted IOC Chair Kirsty Coventry.
In the IOC's statement, it is mentioned that the presence of the SRY gene is a reliable indicator that the athlete developed as a male, and this gene will be present throughout their life. Previously, according to BBC Sports, the IOC left the decision on the admission of transgender athletes to the discretion of individual sports federations. In March 2023, the World Athletics governing body imposed a ban on transgender women from participating in major competitions if they transitioned after male puberty. Before that, transgender athletes could participate if their testosterone levels remained below 2.5 nanomoles per liter for two years. Starting in September 2025, a rule for mandatory genetic testing for participation in women's competitions will come into effect.
