- Aprataxin, the causative protein for EAOH is a nuclear protein with a potential role as a DNA repair protein. Sano, Y., Date, H., Igarashi, S., Onodera, O., Oyake, M., Takahashi, T., Hayashi, S., Morimatsu, M., Takahashi, H., Makifuchi, T., Fukuhara, N., Tsuji, S. Ann. Neurol. (2004)