ROANOKE, Va. – Ensuring no one fights alone. The Carilion Clinic Sickle Cell Collaborative is holding a walk to honor sickle cell patients and their caregivers on Saturday. Sickle cell disease is a rare genetic blood disorder that affects every aspect of a person’s life. Predominately impacting people of color, the disease has long been misunderstood by the community and even doctors. It’s also historically come with some unfair stigmas.