A new case of gamma-heavy chain disease (LIA protein) with deletion of the hinge region

TA 4-SCC versus CEA Sensitivity for Lung Cancer

The sensitivity of a new tumor marker, TA 4-SCC, for lung tumors is examined and compared with the performance of the already established CEA. TA 4-SCC sensitivity is only moderate (30 %), and it presents no significant differences among the various histologic types of lung cancer. In addition, unlike CEA, TA 4-SCC is present in large amounts in the serum of many stage I and II patients. In fact, its sensitivity in still curatively operable tumors reaches 30 % compared to 10 % with CEA.

Immunochemical and structural characterization of an IgG1 heavy chain disease

The immunochemical and structural analysis of an IgG1 heavy chain disease is reported. The abnormal component is characterized by extensive deletion including the CH1 domain and most or all of the VH region.