Gedunin degrades endogenous mHTT in fibroblasts from HD patients. A Representative images of mHTT and HTT aggregates in fibroblasts from HD patients and healthy siblings after treatment with Gedunin (white arrowheads, smaller mHTT fragments; green arrowheads, intranuclear inclusions). B Change in mHTT aggregate size in the Gedunin-treated group compared with control (mean ± SD; **P < 0.001, one-way ANOVA, non-parametric and multiple comparisons). C Intranuclear inclusions of mHTT in the Gedunin-treated group compared with control (mean ± SD; **P < 0.001, non-parametric one-way ANOVA, multiple comparisons). D Changes in HTT aggregates in the Gedunin-treated group compared with control.