Jason Collins, the trailblazing former NBA player and the league's first openly gay active athlete, announced his diagnosis with Stage 4 glioblastoma, a highly aggressive brain cancer, confirming a severe prognosis.Collins is undergoing intensive multidisciplinary treatment in Singapore, combining radiation, chemotherapy, and an experimental immunotherapy drug, supported by his brother Jarron Collins and husband Brunson Greene.Despite initial symptoms of memory loss and concentration difficulties in August that led to the critical diagnosis, Collins expressed a determined will to fight the cancer, hoping to inspire others and push medical boundaries.