| A rare genetic immunodeficiency due to a complement cascade protein anomaly with characteristics of low serum levels of MASP-2 and a variable susceptibility to bacterial infections (for example pulmonary tuberculosis, pneumococcal pneumonia, skin abscesses and sepsis), and autoimmune diseases (for example inflammatory lung disease, cystic fibrosis, systemic lupus erythematosus). In many cases it remains asymptomatic. There is evidence the disease is caused by homozygous mutation in the MASP2 gene on chromosome 1p36. |
