Jason Collins, a former NBA center whose professional career lasted 13 seasons across six teams, has revealed that he has been diagnosed with Stage 4 brain cancer. Collins, who made history in 2013 as the first openly gay active player in NBA history, shared that he is battling glioblastoma—one of the most aggressive and fast-spreading forms of brain cancer.

In an open letter published by ESPN, Collins explained the warning signs that led to his diagnosis. He described experiencing persistent difficulty concentrating, an inability to complete even simple daily tasks, and a noticeable decline in his short-term memory. Concerned about these symptoms, Collins underwent a CT scan at UCLA, where doctors discovered a tumor in his brain.

Collins emphasized the seriousness of his condition, noting that glioblastoma is particularly dangerous because it grows within the confined space of the skull and expands rapidly. In his case, the tumor is encroaching on the frontal lobe, the area of the brain responsible for personality, decision-making, and identity. This location makes treatment especially challenging, as the cancer is surrounded by vital brain tissue.

Earlier this year, the NBA released a brief statement confirming that Collins was undergoing treatment for a brain tumor. At the time, the statement intentionally lacked detail, as Collins and his family wanted to maintain privacy while they processed the diagnosis and explored treatment options. Now, Collins says he feels ready to speak openly about his condition, hoping his story may offer strength or guidance to others facing similar battles.

Reflecting on his family’s experience with cancer, Collins recalled how his grandmother struggled with Stage 4 stomach cancer and avoided even hearing the word “cancer.” In contrast, Collins has chosen to confront his diagnosis directly and openly. He stated that acknowledging the reality of his illness empowers him, and like his grandmother before him, he is determined to fight with everything he has.

Currently, Collins is undergoing radiation therapy to slow the growth of the tumor. He has also pursued targeted chemotherapy treatments in Singapore, specifically designed to combat the unique characteristics of his glioblastoma. His long-term goal is to remain healthy enough for a personalized immunotherapy treatment, which is being developed to target his specific cancer.

Beyond his achievements on the basketball court, Collins has long been recognized as a trailblazer for LGBTQ+ athletes. His decision to come out publicly in 2013 helped pave the way for greater visibility and acceptance in professional sports. Now, he hopes that by sharing his cancer journey, he can once again make a meaningful impact.

Collins reflected on advice he received after coming out, when someone he deeply respected told him that living openly could help people he might never meet. That belief has stayed with him ever since. Today, as he faces the fight of his life, Collins hopes that his honesty and resilience will continue to inspire others—both within and beyond the sports world.