ABSTRACT
The three major types are
γ
,
α
, and µ.
γ
-Heavy-Chain Disease (γ
-HCD)
This lymphoplasmacytic cell proliferative disorder produces a monoclonal
γ
-heavy-chain in the serum or urine. The
γ
-chains have significant amino acid deletions. The median age is approximately 60 years, although it has been noted in young persons.