Chris Snow, the assistant general manager of the Calgary Flames who has undergone a years-long battle with ALS and cancer, suffered what his wife has described as a “catastrophic brain injury” after going into cardiac arrest.

Kelsie Snow posted the tragic news on X on Wednesday.

“With a shattered heart I’ve come to share that yesterday Chris became unresponsive and went into cardiac arrest,” she wrote.

“Paramedics and doctors were able to get his heart beating again but, devastatingly, a scan showed Chris has suffered a catastrophic brain injury caused by lack of oxygen. His doctors do not expect him to wake up from this.

“My chest feels cracked open and hollowed out. Chris is the most beautiful, brilliant person I’ll ever know and doing life without him feels untenable. Hug your people.”

As detailed by the New York Times, ALS runs in Snow’s family and claimed the lives of his father, two uncles and one cousin.

“I was not scared until my dad was diagnosed,” Chris told the outlet last year.

He continued to work for the Flames, overseeing what the Times described as “a complex digital warehouse for data and video.”

The 42-year-old Snow was first diagnosed with ALS in 2019, and was given about a year to live.

He was able to beat the initial one-year prognosis by using an experimental drug that worked in “silencing the effects of the mutated gene,” Kelsie Snow wrote in 2019, according to Sportsnet in Canada.

“We cannot convey the impact Chris has on our organization, not only in his work but the leadership & positivity he brings. Despite his own challenges, he is a beacon of light, uplifting all of us around him,” the Flames wrote on X. “Our hearts are with Kelsie, [and their children] Cohen & Willa as Chris continues to battle.”