GYPE and Huntington disease: Prior studies in other mouse HD models have not examined survival of GPe, GPi, or SNr neurons, but Perez‐Rosello et al. (2019) reported that Q175 mice show increased GPe responsiveness to striatal input at 6 months of age, as well as in symptomatic 9‐week‐old R6/2 mice, in large part due to increased postsynaptic response efficacy.