CACYBP and neuroblastoma: Recent studies have indicated that CacyBP/SIP participates in many cellular processes [2] such as regulation of the ERK1/2 pathway [3, 4], organization of the tubulin-actin cytoskeleton [5, 6], differentiation of neuroblastoma cells and cardiomyocytes [5, 7], and regulation of apoptosis [8].