- The genes for nicein/kalinin 125- and 100-kDa subunits, candidates for junctional epidermolysis bullosa, map to chromosomes 1q32 and 1q25-q31. Vailly, J., Szepetowski, P., Mattei, M.G., Pedeutour, F., Burgeson, R., Ortonne, J.P., Meneguzzi, G. Genomics (1994)