Table 3.

Classification of the Type of Multiple Myeloma, Based on the Immunoglobulin Secretion Pattern and Serum Immunoglobulin Concentration

Variable	n (%) or median (IQR * )
Type of Myeloma
Non secretory Light chain secretory Heavy and light chain secretory	1 (0.58%) 42 (24.7%) 127 (74.8%)
Heavy Chain (n=127)
IgG IgA IgM IgD	83 (65.4%) 35 (27.6%) 7 (5.5%) 2 (1.6%)
IgG (n=83)	4229 (1929 – 5765)
IgA (n=35)	3487 (1693 – 4975)
IgM (n=7)	4605 (3316 – 5786)
Light Chain (n=165**)
Kappa Lambda	116 (70.3%) 49 (29.7%)
Light Chain Ratio (n=7)	37.7 (5.7 – 289)
% Plasma cells in Bone Marrow (mean of all thre methods)	28.2 (15 – 35)

^* Interquartile range

^** Four patients with heavy chain secretion had no light chain secretion data