- Leigh syndrome caused by mutations in the flavoprotein (Fp) subunit of succinate dehydrogenase (SDHA). Horváth, R., Abicht, A., Holinski-Feder, E., Laner, A., Gempel, K., Prokisch, H., Lochmüller, H., Klopstock, T., Jaksch, M. J. Neurol. Neurosurg. Psychiatr. (2006)