Keratosis Palmoplantaris Papulosa

This Phase 1b, open-label, single-center, prospective trial will be assessing the safety, tolerability, and efficacy of topical KM-001 1% in patients with PPPK1 or PC diseases. In this study 2 cohorts will be recruited:
1. Cohort 1: up to 11 eligible patients, will be enrolled to be treated twice daily, for 12 weeks, with 1% topical KM-001, on the plantar surfaces (2 feet).
2. Cohort 2: up to 8 eligible patients, will be enrolled to be treated twice daily, for 16 weeks, with 1% topical KM-001, on the plantar surfaces (2 feet).
Safety (AEs, blood work [at specific visits], vital signs), tolerability, and efficacy parameters (overall lesion improvement) will be assessed during in-clinic visits (Cohort 1: during Screening, Enrolment, and on Days 7, 28, 42, 63, 84 [end of treatment, EoT], 112 [End of Study, EoS] post first investigational medicinal product (IMP) administration; Cohort 2: during Screening, Enrolment, and on Days 7, 28, 42, 63, 84, 112 [EoT], 140 [EoS] post first investigational medicinal product (IMP) administration).
PK samples will be collected to assess plasma levels of KM-001 on
* Screening (Day -14 to -0): any time during the visit. (or on Day 1 up to 30 minutes pre-dose if missed during Screening)
* Day 7 and at EoT (Cohort 1: Day 84; Cohort 2: Day 112) up to 30 minutes pre-dose, and at 1 h, 2 h, 3 h, 6 h (+15 min) post-dose
* Days 28, 42 for both Cohorts, and Day 84 for Cohort 2: 1 sample after the first dose, before the second dose, as late as possible in the visit.
* End of Study (EoS, Day 112 (Cohort 1) or Day 140 (cohort 2)), or at Early Termination (ET): at any time during the visit.
The patient will complete a patient-reported diary, consisting of treatment compliance and self-assessments for efficacy.
Follow up- 2 weeks after EoT by phone call, and 4 weeks after EoT in clinic visit.

In this phase 1 open label study for patients with type I punctate palmoplantar keratoderma or pachyonychia congenital, 2 arms will be recruited to be treated twice daily, with 1% topical KM-001.
Arm 1: up to 10 eligible patients will be treated for 12 weeks. Arm 2: up to 8 eligible patients will be treated for 16 weeks.
Treatment safety and efficacy will be assessed in the clinic visits (for arm 1 up to day 91, for arm 2 up to day 126). In between safety will also be assessed by phone visits.
At the in-clinic visits, treatment efficacy (lesion clearance - IGA, CGI-S, PGI-C, PGI-S and VAS pain) will also be assessed.
PK blood samples will be collected for arm 1: on Days 0, 7, 84 (EoT visit). One week after the end of treatment (EoT) visit, patients will return to the clinic for final safety, efficacy and PK evaluations. For arm 2, PK blood samples will be collected on days 0, 7, 84, 112 (EoT visit). Two weeks after the end of treatment (EoT) visit, patients will return to the clinic for final safety, efficacy and PK evaluations.