- Differential splicing of COL4A5 mRNA in kidney and white blood cells: a complex mutation in the COL4A5 gene of an Alport patient deletes the NC1 domain. Guo, C., Van Damme, B., Van Damme-Lombaerts, R., Van den Berghe, H., Cassiman, J.J., Marynen, P. Kidney Int. (1993)