5 | Limitations
This study has some limitations that should be noted. This was a
single-center study with a limited number of cases. CD40 ligand
expression levels in in vitro -activated lymphocytes should
be assayed as the patients in this study could not be tested for it in
our hospital. Nevertheless, this study provides a valuable reference for
respiratory infections, especially fungal and viral infections, in
children with XHIGM.