Any classic complement early component deficiency in which the cause of the disease is a mutation in the C4B gene.
Comprehensive, easy-to-understand information about this condition
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Gene data from MyGene.info • Click to view on NCBI Gene
C1 inhibitor deficiency
MONDO:0007361
complement component C1r/C1s deficiency
MONDO:0009005
complement component 2 deficiency
MONDO:0009006
complement component 5 deficiency
MONDO:0012295
complement component 7 deficiency
MONDO:0012412
complement component 6 deficiency
MONDO:0012908