Complex sentence: Martínez-Patiño is a 46,XY woman who has Androgen insensitivity syndrome; her sex chromatin test was negative in 1985, and she was thus ruled ineligible to participate in women athletics.
Split into simpler sentences: Martínez-Patiño is a 46,XY woman who has Androgen insensitivity syndrome. However, her sex chromatin test was negative in 1985, and she was thus ruled ineligible to participate in women athletics.