S1) [41]. Expression of miR-29 cluster members correlated significantly negative to DUSP2 mRNA levels i.a. in thymoma, while members of the C19MC cluster showed exclusively in thymoma significant negative correlations. Moreover, significant negative correlations of miR-302-367 cluster members to DUSP2 mRNA levels were exclusively found in testicular germ cell tumours (TGCT). This evidence concerns the gene DUSP2 and childhood testicular germ cell tumor.