[Gougerot-Sjögren syndrome and monoclonal immunoglobulin]

Serum electrophoresis and immunoelectrophoresis were performed in 67 patients with Sjögren's syndrome. We found a monoclonal gammapathy in 11 cases: IgG (10 cases) and IgM (1 case). 1 monoclonal gammapathy was detected in 2 of 21 patients with primary Sjögren's syndrome. All patients with monoclonal gammapathy were asymptomatic.