Anti-Titin Antibodies in Myasthenia Gravis

Abstract
MYASTHENIA GRAVIS (MG) is an autoimmune disease of the neuromuscular junction characterized by fatigability and weakness of striated muscles.1 It is mediated primarily by autoantibodies directed at the muscle acetylcholine receptor (AChR) in the postsynaptic membrane of the motor end plate.2,3 These autoantibodies are present in the serum of most patients (85%) and can passively transfer the disease to rodents.4 Consequently, they have a major diagnostic and pathogenetic value.