S116: LONG-TERM EFFICACY AND SAFETY OF THE ORAL PYRUVATE KINASE ACTIVATOR MITAPIVAT IN ADULTS WITH NON—TRANSFUSION-DEPENDENT ALPHA- OR BETA-THALASSEMIA. (31st January 2022) - Kuo, K; Layton, D; Lal, A; Al-Samkari, H; Bhatia, J; Kosinski, P; Tong, B; Lynch, M; Uhlig, K; Vichinsky, E