ATXN3 and neuroblastoma: The studies employed human neuroblastoma SK-N-SH cells transfected with full-length ATXN3 with 78 CAG repeats (SK-N-SH-MJD78), human embryonic kidney 293 (HEK-293), or SH-SY5Y cells with inducible ATXN3/Q75-GFP expression, Flp-In SH-SY5Y cells with inducible N-terminal-truncated ATXN3/Q14–75-GFP expression, induced pluripotent stem cells (iPSCs), and GFPu reporter cells.