- Calpain 3 deficiency is associated with myonuclear apoptosis and profound perturbation of the IkappaB alpha/NF-kappaB pathway in limb-girdle muscular dystrophy type 2A. Baghdiguian, S., Martin, M., Richard, I., Pons, F., Astier, C., Bourg, N., Hay, R.T., Chemaly, R., Halaby, G., Loiselet, J., Anderson, L.V., Lopez de Munain, A., Fardeau, M., Mangeat, P., Beckmann, J.S., Lefranc, G. Nat. Med. (1999)