CD79A and Miyoshi myopathy: Training and validation were achieved under the same conditions as described above for the light chains with a 94 patient training group containing 28 IgA (17 A+B chips and 11 P chips) and 66 IgG (34 A+B chips and 32 P chips) monoclonal immunoglobulin heavy chains as assessed by immunoelectrophoresis, a consistent proportion for MM patients.