Study of KM-023 in Healthy Volunteers and Patients With Olmsted Syndrome.

NCT07090889 | Recruiting Phase 1 DMC

• 1 other identifier: KM-023-101
• Study Type: interventional
• Target: 64
• Locations: 1 country
• Sites: 1

Brief Summary

The trial is conducted in order to assess the safety of KM-023 and to observe what effects, both beneficial and adverse, it has on the body, and the way the body absorbs and eliminates KM-023, first in healthy participants, then in Olmsted Syndrome patients. In addition, the study will examine the presence of KM-023 in the different layers of the skin. Finally, the efficacy of KM-023 will be investigated in Olmsted Syndrome patients. The first part of this trial will be conducted with healthy participants in France, then after its completion, the second part of the trial will be conducted with Olmsted Syndrome patients in France and the United Kingdom. The first part of the trial is itself divided in two parts: first, a series of single doses will be given to groups of healthy participants, then other groups of healthy participants will be given repeated doses of KM-023 twice daily for 5 days. The participants will be hospitalized approximately 2 days for the investigation of single doses, and approximately 8 days for the investigation of the multiple doses. Some participants will receive the KM-023, and other will receive a placebo, which is a non-active product. Four (4) different dose levels will be given in the trial part studying single administration, and 3 different dose levels in the trial part studying repeated administrations. The trial will start with the lowest doses, and the dose levels will be gradually increased after the safety and tolerability of the previous dose level has been assessed by a group of experts (including physicians). In order to assess the safety, a series of examinations will be conducted, including taking blood samples. Blood samples will also be collected a regular timepoints in order to evaluate the changes in concentration of KM-023 in blood over time. One group of participants will receive a single dose of KM-023 twice: once after fasting, and once with a meal, to check any effect of food on the concentration of KM-023 in blood. In the second part of the trial, Olmsted Syndrome patients will take KM-023 twice daily, for a duration of 12 weeks. There will be a first hospitalization day, during which the patients will receive the study drug, and will be taught how to self-administer KM-023 at home during the ambulatory periods. Safety and efficacy tests will be performed, and the concentration of KM-023 in blood will be monitored. Patients will then go back home with their treatment, to be taken every day. After the first hospitalization day, there will be five visits (two of them will be 1-day hospitalization periods), to monitor the safety and tolerability, the efficacy, and the concentration of KM-023 in blood. Between the hospitalization visits, the clinical teams will call the patients at home on a regular basis to check the safety and tolerability. The duration of participation, including the selection period and the follow-up period, is a maximum 36 days when only one dose is given, 51 days when the dose is given on two occasions to assess the effect of food, 40 days when treatment is given twice daily for 5 days, and 18 weeks in the case of Olmsted Syndrome patients.

Conditions

Olmsted Syndrome

Outcome Measures

Primary Outcomes (1)

• Number of participants with treatment-emergent adverse events (TEAEs), serious adverse events (SAEs), and other safety-related events.

  Part A- SAD(Single Ascending Dose) day 8, MAD (Multiple Ascending Dose) day 12 Part B- Day 112.

Secondary Outcomes (7)

• Reduction in target plantar callus thickness from baseline to visit at Week 12. (Part B only)

  12 weeks

• Reduction in target plantar callus size from baseline to visit at Week 12. (Part B only)

  12 weeks

• Clearance of the lesions, assessed by change from baseline to W4, 8 and 12 in Investigator Global Assessment (IGA) score. (Part B only)

  12 weeks

• Peak Plasma Concentration (Cmax)

  Part A - SAD (Single Ascending Dose) Day 8; MAD (Multiple Ascending Dose) Day 12; Part B - Day 112.

• Time to Reach Peak Plasma Concentration (Tmax)

  Part A - SAD Day 8; MAD Day 12; Part B - Day 112.

Other Outcomes (1)

• Quantitative analysis of KM-023 distribution across skin layers at various timepoints, utilizing imaging mass spectrometry with matrix-assisted laser desorption/ionization (MALDI).

  Part A- SAD(Single Ascending Dose) day 8, MAD (Multiple Ascending Dose) day 12 Part B- Day 112.

Study Arms (3)

Part A SAD (Single Ascending Dose)

ACTIVE COMPARATOR

Up to 4 cohorts of 8 healthy participants

Drug: KM-023; Drug: Placebo

Part A MAD (Multiple Ascending Dose)

ACTIVE COMPARATOR

3 cohorts of 8 healthy participants.

Drug: KM-023; Drug: Placebo

Part B- OS patients

ACTIVE COMPARATOR

up to 8 participants with OS, receiving KM-023 for 12 weeks.

Drug: KM-023

Interventions

KM-023 DRUG

solution for oral administration

Part A MAD (Multiple Ascending Dose); Part A SAD (Single Ascending Dose); Part B- OS patients

Placebo DRUG

solution for oral administration

Part A MAD (Multiple Ascending Dose); Part A SAD (Single Ascending Dose)

Eligibility Criteria

• Age: 18 Years - 55 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Part A
• Healthy female and male participants.
• Female participants of non-childbearing potential, childbearing potential and males capable of fathering a child must meet the contraception requirements.
• Non-smoking and no use of any tobacco or nicotine products (by declaration) for a period of at least 1 month prior to screening visit.
• Not using prescription medication 14 days prior to admission; and 7 days prior to admission for over the counter (OTC) medication/vitamins/supplements.
• Must not be taking any medication that could potentially impair hepatic or renal function at the time of screening.
• No history of alcohol or other drugs of abuse.
• Body Mass Index (BMI) of 18.0 to 32.0 kg/m2 (inclusive); and a total body weight \>50.0 kg (110 lbs) and \<100.0 kg (220 lbs) at screening and Day -1.
• No vaccines given within 14 days of dosing.
• Covered by a health insurance system where applicable, and/or in compliance with the recommendations of the national laws in force relating to biomedical research.
• Part B
• Read, understood, and signed an ICF before any investigational procedure(s) are performed.
• Clinical diagnosis of OS, with confirmed TRPV3 or PERP mutation, and visible palmoplantar keratoderma.
• Stable medical condition over the previous 1 month.
• Willingness and ability to comply with the treatment and follow-up visits.

You may not qualify if:

• Part A
• Participants who are staff members at the investigational site directly involved in conducting the study.
• Evidence or history of clinically relevant hepatic, hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease.
• History of regular alcohol consumption exceeding 14 drinks/week for females or 21 drinks/week for males within 6 months of screening.
• Screening supine BP ≥145 mm Hg (systolic) or ≥90 mm Hg (diastolic)
• Participants with any abnormalities in clinical laboratory tests, and serology results, at screening, considered by the study physician as clinically significant.
• Pregnant or breastfeeding female participants.
• Participants who donated blood or received blood or plasma derivatives in the 30 days preceding study drug administration.
• Dosed in another clinical trial within at least 10 tissue half-lives prior to dosing or 4 months.
• Known relevant allergy to any drug or excipients in the formulation
• Participants with any acute medical situation (e.g., acute infection) within 48h of screening or start of dosing, which is considered of significance by the Investigator.
• Major surgery within the last 3 months or any planned surgery during the trial.
• Unwilling or unable to comply with all scheduled visits, treatment plan, laboratory tests and other study procedures and the restrictions described in the protocol.
• Any other condition or previous therapy that, in the opinion of the Investigator or their designee, would render the participant unsuitable for this study, including an inability to fully comply with the study protocol requirements or a likelihood of noncompliance with study procedures.
• Part B

Sponsors & Collaborators

• Kamari Pharma Ltd: lead

Study Sites (1)

Biotrial

Rennes, France

RECRUITING

MeSH Terms

Interventions

3-(3-ethyl-5-isopropyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carbonyl)-5-methylbenzonitrile

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: RANDOMIZED
• Masking: QUADRUPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: SEQUENTIAL
• Sponsor Type: NETWORK
• Responsible Party: SPONSOR

Model Details: The study includes two parts: Part A- a Single Ascending Dose (SAD) part followed by a Multiple Ascending Dose (MAD) part, Placebo- controlled Part B- Open Label

Study Record Dates

• First Submitted: May 8, 2025
• First Posted: July 29, 2025
• Study Start: July 8, 2025
• Primary Completion: February 11, 2026
• Study Completion: February 11, 2026
• Last Updated: July 29, 2025

Record last verified: 2025-07

Locations

FR (1)