ATXN3 and Tremor: With respect to parkinsonian symptoms, there was a significant increase in rigidity (p = 0.0402) and a tendency toward a non-significant increase in resting tremor (p = 0.2230) when the ataxic SCA3 MC with ATXN2 27-30Q were compared with that without intermediate ATXN2 repeats (Fig. 1J; Table 5).