Our results are consistent with the data from other Asian countries such as Japan,38 China39 and India.40 A study conducted in Northern India among adults has detected 6.7% participants with partial IgA deficiency out of 3640 participants screened, which is also in accordance with our findings.40 Another study performed in Iran has observed partial IgA deficiency of 7.1% in children (mean age 10.3 years) with rheumatoid arthritis.41 We have also found a higher number of participants with low IgA in children. Here, CD79A is linked to selective IgA deficiency disease.