Published data: Npc1-/- CHO cells, NPC patient fibroblasts and Npc1-/- mice
“The supportive nonclinical mechanistic data that contributed to CE include in vitro and in vivo data in (1) wildtype and NPC1-deficient Chinese hamster ovary (CHO) (Npc1-/- CHO) cells; (2) fibroblasts derived from patients with NPC; and (3) Npc1-/- mice”
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Reviewer's view of the efficacy data
Proof-of-concept only; plausible mechanistic support for confirmatory evidence, not direct support for clinical endpoint
“It is concluded that the pharmacology parameters evaluated in nonclinical models are primarily proof-of-concept that suggest plausible mechanistic support for the overall package of CE of effectiveness for levacetylleucine in patients with NPC.”