San Francisco 49ers Dwight Clark makes his iconic "Catch" against the Dallas Cowboys American football star Dwight Clark was known for having the safest hands on the San Francisco 49ers. In September 2015, doctors diagnosed him with ALS after he struggled to open a sugar packet. Less than three years later, he died. Amyotrophic lateral … Continue reading CIRM’s “Ask the Expert About ALS and Stem Cells” Facebook Live event