B-ALL first Relapse

A Phase 2 Study of Blinatumomab (NSC# 765986, IND# 125462) in Combination with Nivolumab (NSC # 748726, IND# 125462), a Checkpoint Inhibitor of PD-1, in B-ALL Patients Aged ≥ 1 to < 31 Years Old with First Relapse