Sickle Cell Trait

Ryan Clark

Ryan Clark Launches Program To Combat Sickle Cell Disease

Flanked by doctors and patients, the Steelers safety, Ryan Clark unveiled Ryan Clark’s Cure League.


Ryan Clark lines up against the Baltimore Ravens

Steelers Will Face Broncos Without Ryan Clark

When the Steelers take the field at Mile High Stadium Sunday, they will do so without starting safety Ryan Clark. Back in 2007 when the Steelers played the Broncos in Denver, Clark’s sickle cell trait caused him to become ill because of the high altitude.