| mRNA IDs | Primary Information | |
| NM_001006658.1,NM_001877.3 | Gene Symbol | CR2 |
| Protein Name | complement component (3d/Epstein Barr virus) receptor 2 | |
| Alternate Names | C3DR, CD21, SLEB9 | |
| Gene Locus | 1q32 | |
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| Disease name | Characteristic / Associated features | Category | inheritance type |
| Recurrent upper respiratory tract infections; persistent myalgia; fever; sore throat; chronic diarrhea; weight loss; haemophilus influenzae infections; white blood cell count increased; splenomegaly; hypogammaglobulinemia; Immunoglobulin G subclass deficiency | Predominantly antibody deficiencies | Autosomal recessive |