Previously, the median GSP of anti-YghJ IgA in serum and ALS from these volunteers were found to be 0.45 (IQR: 0.30, 0.59; range: 0.13, 0.88; n = 16) and 0.39 (IQR: 0.20, 0.59; range: 0.05, 1.04; n = 19), respectively [22]. The gene discussed is CD79A; the disease is amyotrophic lateral sclerosis.