PMM2 and cerebellar ataxia: We also found three other genes that are differentially expressed due to Fxn knockdown, namely, CSTB (Pennacchio et al., 1998), NHLRC1 (Singh and Ganesh, 2009) and PMM2 (Matthijs et al., 1997) all of which are associated with other disorders manifesting ataxia (Figure 8c).