However, treatment with peptide P110 (suppressor of DRP1 activity) in the zQ175 knock-in mouse model (zQ175 allele encodes the human HTT exon one sequence with a ~ 190 CAG repeats) disables the translocation of DRP1 into mitochondria, improves locomotor activity and reduces the white matter degeneration of the corpus callosum in HD mice [172]. The gene discussed is HTT; the disease is Huntington disease.