Serum β2-microglobulin is frequently elevated in type 1 Gaucher patients

β2-Microglobulin is the major prognostic factor in multiple myeloma, a known comorbidity of Gaucher disease. We evaluated herein serum β2-microglobulin levels of 31 type 1 Gaucher patients; for 8/31 patients, pre- and post-treatment comparisons were made. Thirteen patients (on treatment = 6) had high levels of β2-microglobulin, and showed higher chitotriosidase activity and Severity Score Index, and lower concentration of platelets, than patients with normal levels. Levels of β2-microglobulin correlated with chitotriosidase activity (ρ = 0.65; p