Coenzyme Q10 and vitamin E deficiency in Friedreich’s ataxia: predictor of efficacy of vitamin E and coenzyme Q10 therapy

A high proportion of FRDA patients have a decreased serum CoQ(10) level which was the best predictor of a positive clinical response to CoQ(10)/vitamin E therapy. Low and high dose CoQ(10)/vitamin E therapies were equally effective in improving ICARS scores.