KCNN2 and cerebellar ataxia: We observed that SK2-KO mice had a statistically significant increase in gait parameters related to gait variability (stride-length coefficient of variance [CV], stance width CV, ataxia coefficient; S2E, S2G and S2H Fig) and of the paw angle specific for hind limbs (S2C Fig), providing a quantitative representation of their evident motor impairment.