CTIF and amyotrophic lateral sclerosis: The previously reported SNPs in European and Chinese patients with ALS, such as rs2046243 in CTIF and rs10128627 in FRMD8, showed no significant association with AAO in our study (rs2046243: p = 0.466, effect = −0.393, SE = 0.538; rs10128627: p = 0.384, effect = 0.597, SE = 0.686).