MAD Study to Assess the Safety, Tolerability, PKs and Efficacy of YJ001 for Spray Use in Patients With DPNP

This Phase I, randomized, double-blind and placebo controlled study is to evaluate the safety, tolerability, and PK, and to preliminarily assess the efficacy of topically administered YJ001 in a multiple-ascending dose (MAD) fashion in the patients with DPNP. The study will be conducted at a single study center. In this study, 2 cohorts (N=24, 12 subjects for each cohort), each cohort will consist of 10 active and 2 placebo, with approximately equal numbers of male and female subjects. Each subject will be administered a single dose of YJ001 as multiple sprays topically on both feet and below the ankle in the morning on Day 1 and Day 2, and will be administered as twice daily doses once in the morning and the other in the evening (with an interval of 11 to 13 h) from Day 3 through Day 11.