ALK and neuroblastoma: Specific ALK inhibitors were shown to inhibit the growth of NB and RMS cells overexpressing wildtype or mutated ALK in vitro and in xenograft models [30, 33, 39, 43, 44], and crizotinib is currently being tested for the treatment of NB and RMS (NCT00939770, NCT01524926, NCT01121588).