SPG11 and hereditary spastic paraplegia: To substantiate these findings, we analyzed myeloid cells in two additional postmortem cases of SPG11–HSP that had been banked in Belgium (case BG2, previously reported in Denora et al. 2016 [25]) and at the University of Washington (case UWA, precise clinical description will be reported elsewhere; Scherpelz et al., in review).