[disorder of immunoglobulin synthesis in which large quantities of abnormal heavy chains are excreted in the urine; amino acid sequences of the N-(amino-) terminal regions of these chains are normal, but they have a deletion extending from part of the variable domain through the first domain of the constant region, so that they cannot form cross-links to the light chains; the defect arises through faulty coupling of the variable (V) and constant (C) region genes. ( CSP )]
UMLS (NCI) C0018852 Relation/PAR: Lymphoproliferative Disorder
paraproteinemia
gammopathy
Relation/CHD: Alpha Heavy Chain Disease