DOTHAN, Ala. (WTVY) -- A doctor from UAB, spoke before members of a local chapter of Alpha Kappa Alpha, inc., about advancements in sickle cell treatment. Dr. Tim Townes lecture signifies the start of a sickle cell awareness weekend. This is the 10th year the sorority chapter has had a guest lecturer, speak at Southeast Alabama medical center. Dr. Townes spoke on a number of issues including, just how close they are to finding a cure. Saturday they will be having their walk-a-thon at Westgate Park. Registration starts at 7:15am, with the walk beginning at 8:30pm.