The protein encoded by this gene is a B-cell specific antigen, and a low-affinity receptor for IgE. It has essential roles in B cell growth and differentiation, and the regulation of IgE production. This protein also exists as a soluble secreted form, then functioning as a potent mitogenic growth factor. Alternatively spliced transcript variants encoding different isoforms have been described for this gene.
Fc Fragment Of IgE Receptor II; Fc Fragment Of IgE, Low Affinity II, Receptor For (CD23); Immunoglobulin E-Binding Factor; Lymphocyte IgE Receptor; Fc Epsilon Receptor II; Fc-Epsilon-RII; CD23 Antigen; BLAST-2; CLEC4J; CD23A