Dr. Filippatos unequivocally confirmed that neither Khelif nor Lin are biological females.

He also criticized the International Olympic Committee (IOC) for relying on passports to determine gender, stating, "Medicine is knowledge, it is not opinion. One passport can give to us the opportunity to be men, and, tomorrow when I go back to Athens, I can go to my government and change my name from Ioannis to Ionnia. That means I am a woman tomorrow? Please. The nature and the biological world do not change."

Dr. Filippatos' statements were backed by DNA tests conducted during the 2023 International Boxing Association (IBA) World Championships in New Delhi and a prior test in Turkey in May 2022. Both tests revealed that Khelif has male chromosomes (XY). Additionally, he emphasized that the women's category must be defined by those who have a female karyotype (XX).