Extended Data Fig. 2: Treatment-induced peripheral neuropathy.

a, b, (a) Ultrastructural examination and (b) electronic microscopy analysis of a biopsy collected from the left superficial peroneal upper leg nerve root of a Cohort 4 patient from the Solid Tumor trial. The patient developed Grade 3-4 peripheral neuropathy while on a treatment regimen of 2.5 mg of IACS-010759 daily during the induction phase (Day 1–7), and 2.5 mg bi-weekly during the maintenance phase. Images indicate severe vacuolar changes in myelin sheath with axonal degenerative changes and atrophy.