The Safety and Tolerability of CLZ-2002 in Patients With Charcot-Marie Tooth Disease.

A Phase 1, Open-Label, Prospective, Dose-finding Clinical Trial for Evaluation of Safety and Tolerability of Intramuscular Injections of CLZ-2002 for the Treatment of Subjects With Charcot-Marie-Tooth Type 1(CMT 1)

A Phase 1, Open-Label, Prospective, Dose-finding Clinical Trial for Evaluation of Safety and Tolerability of Intramuscular Injections of CLZ-2002 for the Treatment of Subjects with Charcot-Marie-Tooth type 1(CMT 1)

Study Overview

• Status: Completed
• Conditions: Charcot Marie Tooth Disease, Type 1
• Intervention / Treatment: Drug: CLZ-2002

Detailed Description

This study is the First In Human (FIH) clinical trial for evaluating the safety and tolerability of IM injections of CLZ-2002 in patients with Charcot-Marie-Tooth disease (CMT) Type 1.

CLZ-2002 is the allogeneic mesenchymal stem cell-derived Neuronal Regeneration Promoting Cells. These cells are Schwann cell-like cells differentiated from tonsillar mesenchymal stem cells. CLZ-2002 helps the remyelination of the damaged peripheral nerves by restoring the myelin sheaths. It also induces the nerve regeneration and myelination pathways in the sciatic nerve and restores abnormal muscle tissues in Charcot-Marie-Tooth disease type 1 (CMT1).

• Study Type: Interventional
• Enrollment (Actual): 9
• Phase: Phase 1

Contacts and Locations

Study Locations

• Korea, Republic of
  • Gangnam-gu
    • Seoul, Gangnam-gu, Korea, Republic of, 06351
      • Samsung Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Subjects aged 18 years or older
• Subjects with a proven diagnosis of Charcot-Marie-Tooth disease type 1 at the time of screening visit
• Subjects who have muscle weakness in at least foot dorsiflexion (clinical assessment) at the time of screening visit
• Subjects with a CMT neuropathy score (CMTNS-v2) of 2 or more and 30 or fewer points at the time of screening visit
• Subjects who can understand and are willing to sign a written informed consent document are willing to comply with all study procedures and schedule visits.

Exclusion Criteria:

• Subjects who have any other neuromuscular diseases
• Subjects who have undergone upper and lower limb bone surgery within six months before screening visit
• Subjects who have concerns about muscle strength measurements due to the previous surgery
• Subjects who have severe active infection including severe/purulent cellulitis at the injection sites at screening visit
• Subjects who have a history of hospitalization due to hypersensitivity to antihistamines or allergy or hypersensitivity to certain substances such as food or drugs
• Subjects who have a history of unstable cardiovascular disease defined by the presence of myocardial infarction (STEMI or NSTEMI) within 6 months before the screening or the presence of unstable angina pectoris (in the case of increased frequency of symptoms, increased severity, or signs of prolonged symptoms at moderate activity or rest)
• Subjects who have a history of a transient ischemic attack (TIA) or stroke within 6 months before screening visit
• Subjects who have a positive HIV antibody test, hepatitis B antigen, or hepatitis C antibody test result
• Subjects who have a history of malignant tumors within 5 years before screening visit
• Subjects who have received systemic steroids (inhaled steroids are allowed), immunotherapy, or cytotoxic therapy within 14 days before screening, or who are expected to receive such treatment during the study period
• Subjects who have participated in other clinical trials within 30 days before screening visit
• Pregnant and lactating women or women of childbearing potential and men who plan a pregnancy or are unwilling to use adequate birth control methods& until 30 days after the end of drug administration

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: CLZ-2002; CLZ-2002 injection is intramuscular in lower limbs on Day 1.	Drug: CLZ-2002; Low dose group (6×10^6 cells), Mid dose group (12×10^6 cells), High dose group (24×10^6 cells); Other Names: Allogeneic tonsillar mesenchymal stem cell-derived schwann cell like cells

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Safety and tolerability of intramuscular (IM) injections of CLZ-2002 in Participants	Frequency and percentage of treatment-emergent adverse events (TEAEs) and serious adverse events after injection through laboratory tests, physical examinations, vital signs, and electrocardiogram measurements conducted during the clinical trial.	Day 1 (visit 2) to Week 24 (visit 6)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Changes from baseline in neurological examination at Weeks 1, 4, 12 and 24	The principal investigator will assess the neurological examination which is investigated the evidence of muscle weakness in the arms, legs, hands, and feet; as well as signs of muscle wasting, reduced reflexes, and any sensory loss.	Weeks 1, 4, 12 and 24
Changes from baseline in functional disability using the functional disability scale (FDS) at Weeks 4, 12, and 24	The Functional Disability Scale (FDS) primarily evaluates impairment in motor function and is assessed by the neurologist (principal investigator) during the visit. The 9 stages of FDS are as follows: 0; normal, 1; normal but with cramps and fatigability, 2; inability to run, 3; walking difficulty but still possible unaided, 4; If able to walk with a cane (walk with cane), 5; walk with crutches, 6; walk with a walker, 7; wheelchair bound, 8; bedridden.	Weeks 4, 12, and 24
Changes from baseline in the 10-meter walk test at Weeks 4, 12, and 24	This test measures the time required for a subject to walk 10 m through the 10-Meter Walking Test (10MWT)	Weeks 4, 12, and 24
Change from baseline in the fatty infiltration level of lower limb muscles at Week 24.	The degree of fat infilteration seen on MRI was classified into five grades from 0-4 and compared as follow: No fat infiltration at all (Grade 0; no fat), some traces of fat infiltration (Grade1; some fatty streak), more muscle than fat (Grade2; fat <muscle), when muscle and fat are similar (Grade3; fat = muscle), and when fat is more than muscle (Grade 4; fat>muscle).	Week 24
Changes from baseline in the velocity of Motor and Sensory nerve conduction at Weeks 4, 12, and 24	Motor and sensory nerve conduction studies will be performed on the median nerve, ulnar nerve, peroneal nerve, tibial nerve, and sural nerve using skin surface stimulation electrodes and recording electrodes. using the skin surface stimulation and recording method. The studies will be performed with the amplitudes of the compound muscle action potential (CMAP) and the sensory nerve action potential (SNAP) from the positive maximum value to the negative maximum value.	Weeks 4, 12, and 24
Changes from baseline in the disease severity of CMTNS-v2 score at Weeks 4, 12, and 24.	The range of CMTNS-v2 (Charcot Marie Tooth Neuropathy Score-v2) ranges from 0-36. The disease severity is classified as mild (≤10), moderate (11 to 20), and severe (>21).	Weeks 4, 12 and 24
Changes from baseline in the overall neuropathy limitation scale (ONLS) at Weeks 4, 12 and 24	The Overall Neuropathy Limiting Scale (ONLS) assesses scale scores in the lower extremities as the Total Neuropathy Limiting Scale. A 1-point stage represents a clinically meaningful change in terms of disability.	Weeks 4, 12 and 24

Collaborators and Investigators

• Sponsor: Cellatoz Therapeutics, Inc

Study record dates

Study Major Dates

• Study Start (Actual): June 19, 2023
• Primary Completion (Actual): August 9, 2024
• Study Completion (Actual): August 9, 2024

Study Registration Dates

• First Submitted: June 16, 2023
• First Submitted That Met QC Criteria: July 9, 2023
• First Posted (Actual): July 17, 2023

Study Record Updates

• Last Update Posted (Actual): March 25, 2025
• Last Update Submitted That Met QC Criteria: February 13, 2025
• Last Verified: June 1, 2023

More Information

Terms related to this study

• Keywords: Cell therapy; CMT1; Charcot-Marie-Tooth Disease; Tonsillar mesenchymal stem cells (T-MSC); Neuronal Regeneration Promoting Cells; Schwann cell-like cells
• Additional Relevant MeSH Terms: Stomatognathic Diseases; Nervous System Diseases; Neuromuscular Diseases; Genetic Diseases, Inborn; Peripheral Nervous System Diseases; Neurodegenerative Diseases; Congenital Abnormalities; Heredodegenerative Disorders, Nervous System; Nervous System Malformations; Polyneuropathies; Tooth Diseases; Charcot-Marie-Tooth Disease; Nerve Compression Syndromes; Hereditary Sensory and Motor Neuropathy
• Other Study ID Numbers: CLZ-CMT-101

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No