MYH9 and anaplastic large cell lymphoma: Many other rearrangements involving the ALK gene have recently been shown to be associated with ALCL, including ALO17-ALK, TRK-fused gene (TFG)-ALK, moesin (MSN)-ALK, Tropomyosin 3 (TPM3)-ALK, Tropomyosin 4 (TPM4)-ALK, ATIC-ALK, myosin 9(MYH9)-ALK, CLTC-ALK [15].