Jason Collins, a 13-year NBA veteran and groundbreaking athlete who came out as gay in 2013, is being treated for a brain tumor, his family said.

The NBA released a statement by Collins' family on Sept. 11 about the 46-year-old's health.

"NBA Ambassador and 13-year NBA veteran Jason Collins is currently undergoing treatment for a brain tumor," the statement said. "Jason and his family welcome your support and prayers and kindly ask for privacy as they dedicate their attention to Jason's health and well-being."

The 7-foot center played for the then-New Jersey Nets from 2001 to 2008, a span that included a pair of appearances in the NBA Finals. He also played for five other NBA teams before he returned to the Nets, this time in Brooklyn, in 2014 to finish his career.

The Nets shared a

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