Definition: 'Immunoglobulin G Subclass Deficiency'
immunoglobulin G subclass deficiencyType: Term
1. a rare inherited disorder in which there are reduced levels of one or more IgG subclasses resulting from defective heavy chain genes or an abnormality in the regulation of immunoglobulin isotype switching.
The definition information for immunoglobulin G subclass deficiency is provided by Stedman's. You can search our medical dictionary here.