Topic: AS04-MDS Biology and Pathogenesis/AS04b-Clonal diversity & evolution: INDUCTION CHEMOTHERAPY AND ECULIZUMAB TREATMENT OF HIGH-RISK MYELODYSPLASIA WITH A LARGE PAROXYSMAL NOCTURNAL HAEMOGLOBINURIA CLONE. (September 2021) - Cross, J.; Johansson, U.; Besley, C.; Protheroe, R.; Kulasekararaj, A.; Mehta, P.