This is what I found on DailyMail:

Star Trek star Anton Yelchin secretly battled cystic fibrosis before he tragically died in a car crash at the age of 27, a new documentary has revealed.

The Hollywood star was on his way to an audition in 2016 [when] his SUV rolled down a steep driveway and pinned him against a security gate where he died on impact.

His parents, former Russian figure skating pair Viktor and Irina Yelchin, revealed the actor kept his chronic illness from even his closest friends as he starred in the reboot of the Star Trek franchise.

Documentary director Garret Price says he was ‘surprised’ to learn about his diagnosis and that the actor was ‘admirable’ for his commitment to his career despite his struggle.

The video below is a trailer for a documentary about Yelchin.

Information provided by DailyMail.

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