WBP1L and acute lymphoblastic leukemia: Later, it was shown that its levels are particularly increased in B cell progenitor ALL (BCP‐ALL) with chromosomal translocation t(12;21)(p13;q22), which results in expression of ETV6‐RUNX1 fusion transcription factor.2, 3 In BCP‐ALL, this translocation is associated with good prognosis, which likely explains the correlation between WBP1L expression and favourable outcome.2 However, it is not known whether WBP1L functionally contributes to it.