STIL and acute lymphoblastic leukemia: Among the 28 samples, 17 were shown to have ALL‐related fusions and oncogenic isoforms, including BCR‐ABL1 (n = 7), IKZF1 Δ4‐7 (n = 9), KMT2A‐AFF1 [t(4; 11), n = 2], EBF1‐PDGFRB, P2RY8‐CRLF2, and STIL‐TAL1 (n = 1 each for the last three).