Better Mental Health was associated with ≤3 SMN2 copies (p = 0.029; n = 25), wheelchair use (p = 0.023; n = 31), and the presence of scoliosis (p = 0.031; n = 30), but not with motor function scores (RULM; HFMSE) or performance in ADL (ALSFRS-R, BI). This evidence concerns the gene SMN2 and scoliosis.