KRAS and hepatoblastoma: While the gene itself is not differentially expressed in either of the datasets, its isoforms change significantly in proportions between healthy and hepatoblastoma samples—ENST00000256078 (KRAS-201, traditionally called KRAS4A, a 189-aa long protein) decreases in proportion and ENST00000311936 (KRAS-202, KRAS4B, a 188-aa long protein) increases in proportion in its stead.