IMCY-0141 Safety and Efficacy in Multiple Sclerosis - ISEMIS Study (IMCY-MS-001)

A Phase I/II Dose Escalation/Adaptive Design Study to Evaluate the Safety and Efficacy of IMCY-0141 in Patients With Relapsing Remitting-Multiple Sclerosis (RR-MS)

The IMCY-MS-001 study is a study to test a new experimental drug, IMCY-0141, for the treatment of Relapsing-Remitting Multiple Sclerosis (RR-MS).

The pathophysiology of MS with known myelin autoantigens and T cell epitopes makes this disease a particularly attractive indication for development of an immunotherapeutic based on the Imcyse technology.

Based on the unique mechanism of action of the drug, IMCY-0141 administered as early as possible after confirmation of the diagnosis may potentially switch-off the autoimmune process and limit the corresponding myelin destruction. Newly (recently) diagnosed patients will be targeted to tackle the disease at its onset.

Before launching any efficacy studies, safety of IMCY-0141 in MS patients must be evaluated with a phase I, open-label, dose escalation clinical trial to evaluate the safety of three IMCY-0141 doses followed by a phase II, double-blind, randomized study with an adaptive design to determine if any IMCY-0141 dose(s) offer superior efficacy relative to placebo and to assess immune responses and biomarker data as potential early predictors of efficacy of IMCY-0141 in adults presenting with RR-MS.

Study Overview

• Status: Active, not recruiting
• Conditions: Multiple Sclerosis, Relapsing-Remitting
• Intervention / Treatment: Drug: IMCY-0141; Drug: Placebo; Drug: Dimethyl Fumarate

Detailed Description

The Sample Size determined for this study is as follows:

Phase I:

A total of 12 patients (4 patients in each of 3 dose cohorts) are planned to be enrolled. The study sample size has been estimated as adequate to provide a reliable safety assessment of the tested doses. All primary, secondary and exploratory endpoints will be summarized by descriptive statistics (continuous variables) or frequency tables (categorical variables), by dose group and overall. Additional patients may be enrolled if requested by the IDMC (Independent Data Monitoring Committee).

Phase II:

The sample size estimation is based on the total cumulative number of CUAL observed on brain MRI scans from week 12 till week 36. The study sample size has been estimated as adequate to determine if any IMCY-0141 doses offer superior efficacy (as measured by CUAL) relative to placebo. Using the negative binomial model for CUAL, a maximum total of 150 patients are planned to be enrolled (including the 12 patients enrolled in phase I), with 30 patients randomized to each of five groups:

• Placebo
• IMCY-0141 dose 1
• IMCY-0141 dose 2
• IMCY-0141 dose 3
• DMF (open label)

During the adaptive design phase (Phase IIa), a minimum of 40 patients will be enrolled (with 8 patients randomized to each of five groups) and analyzed along with the 12 phase I patients as detailed here:

• Placebo: 8 patients
• IMCY-0141 dose 1: 8 patients + 4 phase I patients
• IMCY-0141 dose 2: 8 patients + 4 phase I patients
• IMCY-0141 dose 3: 8 patients + 4 phase I patients
• DMF (open label) : 8 patients

During the Phase IIb part, up to 98 additional patients will be enrolled in order to get up to 150 patients spread over the groups selected for Phase IIb, with a maximum 30 patients randomized to DMF. These sample sizes are sufficient to deliver Type I errors less than 5% in our chosen null scenarios, and unconditional powers greater than 75% and conditional powers greater than 90% in our two alternative scenarios.

• Study Type: Interventional
• Enrollment (Estimated): 150
• Phase: Phase 2; Phase 1

Contacts and Locations

Study Locations

• Moldova, Republic of
  • Chisinau, Moldova, Republic of, MD-2025
    • Republican Clinical Hospital, ARENSIA Exploratory Medicine

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 45 years (Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria (Phase I and II):

1. Male or female between 18 and and 45 years old.
2. RR-MS according to the 2017 revisions of the McDonald Criteria.
3. Patients should be newly diagnosed or have a disease duration ≤ 3 years.
4. If not newly diagnosed, patients should have at least one documented clinical relapse in the last 12 months.
5. Patients should present with at least 1 Gadolinium-enhancing (Gd+) T1-weighted lesion OR at least 2 new or enlarging T2-weighted lesions at screening MRI compared to a reference scan in the last 6 months.
6. No background MS treatment at the time of study treatment start (refer to exclusion criteria for details about authorized washout period for some first line treatment).
7. EDSS ≤ 5.0 at screening.

8. Women of childbearing potential (1) should use an highly effective contraception method (2) from screening and for the whole duration of the study. (1) Of child-bearing potential is defined as being post onset of menarche and not meeting any of the following conditions:

   • Menopausal for at least 2 years (follicle-stimulating hormone within menopausal range),
   • Having undergone bilateral tubal ligation at least 1 year previously
   • Having undergone bilateral oophorectomy or hysterectomy. (2) HIGHLY EFFECTIVE contraceptive measures acceptable for the whole duration of the study have been defined based on the CTFGs recommendations on contraception and are the following:
   • Combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation (oral, intravaginal, transdermal),
   • Progestogen-only hormonal contraception associated with inhibition of ovulation (oral, injectable, implantable).
   • Intrauterine device (IUD)
   • intrauterine hormone-releasing system (IUS)
   • Monogamous relationship with vasectomized partner. Partner must have been vasectomized for at least 6 months prior to the patient's entry into the study
   • Abstinence or absence of sexual relations with men.
9. Ability to understand and comply with research requirements and procedures, in opinion of investigator (Signed Informed Consent)

Exclusion Criteria (Phase I and II):

1. Secondary or primary progressive multiple sclerosis and late onset multiple sclerosis (LOMS).

2. Findings on brain MRI scan indicating any clinically significant brain abnormality like:

   • Doubts about MS diagnosis (based on clinically or imaging abnormalities)
   • PML cases (positive PML checklist according to "suspected PML case adjudication instructions")
   • Co-morbidities influencing the MS disease evolution (i.e. Tumor, large infarction, CSF obstruction)
3. Patient has complete transverse myelitis or bilateral optic neuritis.
4. Systemic corticosteroids or adrenocorticotropic hormone (ACTH) without chronic use within 30 days prior to screening MRI.
5. Treatment with rituximab, ocrelizumab, mitoxantrone, or lymphocyte depleting therapies (e.g., alemtuzumab, anti-CD4, cladribine, cyclophosphamide, total body irradiation, bone marrow transplantation) within 48 weeks prior to study treatment start.
6. Use of lymphocyte trafficking blockers (e.g., natalizumab, fingolimod) within 24 weeks prior to study treatment start.
7. Treatment with β-interferons or glatiramer acetate within 4 weeks prior to study treatment start.
8. Treatment with teriflunomide within 12 weeks prior to study treatment start.
9. Exposure to dimethyl fumarate within 6 months prior to study treatment start.
10. Any investigational drug within the past 6 months at the time of study treatment start.
11. Immunosuppressive therapy including chronic use of systemic steroids in past year. Topical, inhalational or intranasal corticosteroids are allowed.
12. Primary or secondary immune deficiency disorders with the exception of well-controlled diabetes or thyroid disorder.
13. Patients with combined other auto-immune or inflammatory disorders.
14. Have signs or symptoms of active or long COVID infection or a positive COVID PCR test during the screening period. In the case of PCR positivity, a reswabbing will be done. If reswabbing returns a negative result, the initiation of study treatment can occur.
15. Have evidence of current or past human immunodeficiency virus (HIV-1 and 2), Hepatitis B or Hepatitis C infection: HBsAg+ or anti-HBc+; anti-HCV+ (unless the polymerase chain reaction [PCR] for HBV DNA (hepatitis B) or HCV RNA (hepatitis C) is negative according to local procedure).
16. Current signs or symptoms of infection at time of study treatment start or within 2 weeks prior to planned administration of the study product or intravenous antibiotics within 2 months prior to the first planned administration of the study product.
17. Live, attenuated vaccine within 3 months prior to the first planned administration of the study product.
18. Inability to comply with MRI scanning, including contraindications to MRI such as known allergy to gadolinium contrast media, claustrophobia, presence of a pacemaker, cochlear implants, ferromagnetic devices or clips, intracranial vascular clips, insulin pumps, nerve stimulators.
19. Any other significant disease, disorder or finding which may significantly increase the risk to the patient because of participation in the study, affect the ability of the patient to participate in the study or impair interpretation of the study data.
20. Patients with a known hypersensitivity to any component of the drug product.
21. Patients with psychiatric or cognitive disorders.
22. History of MS related seizures not adequately controlled by medications.
23. History of cancer, except adequately treated basal cell or squamous cell carcinoma of the skin (no more than 3 lesions requiring treatment in lifetime) or carcinoma in situ/cervical intraepithelial neoplasia of the uterine cervix, unless considered cured > 5 years
24. Abnormal renal function defined by creatinine clearance ≤ 60 ml/min/1.73m2.
25. Patient with total lymphocytes count < 1000/mm3.
26. Patient with abnormal hepatic function defined as any liver enzyme > 3 ULN, bilirubin > 3 ULN with exception of Gilbert Syndrome.
27. Breastfeeding/lactating or pregnant women.

Exclusion Criteria specific for Phase I:

1. Patient HLA DRB1*03:01 positive

Exclusion Criteria specific for Phase II:

1. Patients already included in Phase I

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Sequential Assignment
• Masking: Quadruple

Number of Arms

8

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Cohort 1 - Phase I (IMCY-0141 Dose 1); The first dose (Cohort 1) will consist of the administration of 150 μg of peptide (IMCY-0141) in two separate injections of 75 μg each (500μl each).	Drug: IMCY-0141; The investigational medicinal product (IMP) consists in a small synthetic peptide (23 amino acids - IMCY-0141) combining a known human epitope of MOG flanked with a thioredox motif, presented in the form of a freeze-dried sterile powder and diluent for subcutaneous (SC) administration. The diluent includes the adjuvant aluminium hydroxide (alum) at a concentration of 900 μg/mL. Treatment will be injected within 4h of resuspension of the powder with the diluent. Treatment will consist of 6 immunizations (separated by 14 days) of the IMP by SC injection in the upper arm, in the region of the triceps (lateral part of the arm, midway between the elbow and the shoulder). Half of the dose to be administered will be injected concomitantly in both arms.; Other Names: Imotope
Experimental: Cohort 2 - Phase I (IMCY-0141 Dose 2); The second dose (Cohort 2) will consist of the administration of 450 μg of peptide (IMCY-0141) in two separate injections of 225 μg each (500μl each).	Drug: IMCY-0141; The investigational medicinal product (IMP) consists in a small synthetic peptide (23 amino acids - IMCY-0141) combining a known human epitope of MOG flanked with a thioredox motif, presented in the form of a freeze-dried sterile powder and diluent for subcutaneous (SC) administration. The diluent includes the adjuvant aluminium hydroxide (alum) at a concentration of 900 μg/mL. Treatment will be injected within 4h of resuspension of the powder with the diluent. Treatment will consist of 6 immunizations (separated by 14 days) of the IMP by SC injection in the upper arm, in the region of the triceps (lateral part of the arm, midway between the elbow and the shoulder). Half of the dose to be administered will be injected concomitantly in both arms.; Other Names: Imotope
Experimental: Cohort 3 - Phase I (IMCY-0141 Dose 3); The third dose (Cohort 3) will consist of the administration of 1350 μg of peptide (IMCY-0141) in two separate injections of 675 μg each (500μL each).	Drug: IMCY-0141; The investigational medicinal product (IMP) consists in a small synthetic peptide (23 amino acids - IMCY-0141) combining a known human epitope of MOG flanked with a thioredox motif, presented in the form of a freeze-dried sterile powder and diluent for subcutaneous (SC) administration. The diluent includes the adjuvant aluminium hydroxide (alum) at a concentration of 900 μg/mL. Treatment will be injected within 4h of resuspension of the powder with the diluent. Treatment will consist of 6 immunizations (separated by 14 days) of the IMP by SC injection in the upper arm, in the region of the triceps (lateral part of the arm, midway between the elbow and the shoulder). Half of the dose to be administered will be injected concomitantly in both arms.; Other Names: Imotope
Experimental: Group 1 - Phase II (IMCY-0141 Dose 1); Administration of IMCY-0141, 150 μg combined with alum adjuvant.	Drug: IMCY-0141; The investigational medicinal product (IMP) consists in a small synthetic peptide (23 amino acids - IMCY-0141) combining a known human epitope of MOG flanked with a thioredox motif, presented in the form of a freeze-dried sterile powder and diluent for subcutaneous (SC) administration. The diluent includes the adjuvant aluminium hydroxide (alum) at a concentration of 900 μg/mL. Treatment will be injected within 4h of resuspension of the powder with the diluent. Treatment will consist of 6 immunizations (separated by 14 days) of the IMP by SC injection in the upper arm, in the region of the triceps (lateral part of the arm, midway between the elbow and the shoulder). Half of the dose to be administered will be injected concomitantly in both arms.; Other Names: Imotope
Experimental: Group 2 - Phase II (IMCY-0141 Dose 2); Administration of IMCY-0141, 450 μg combined with alum adjuvant.	Drug: IMCY-0141; The investigational medicinal product (IMP) consists in a small synthetic peptide (23 amino acids - IMCY-0141) combining a known human epitope of MOG flanked with a thioredox motif, presented in the form of a freeze-dried sterile powder and diluent for subcutaneous (SC) administration. The diluent includes the adjuvant aluminium hydroxide (alum) at a concentration of 900 μg/mL. Treatment will be injected within 4h of resuspension of the powder with the diluent. Treatment will consist of 6 immunizations (separated by 14 days) of the IMP by SC injection in the upper arm, in the region of the triceps (lateral part of the arm, midway between the elbow and the shoulder). Half of the dose to be administered will be injected concomitantly in both arms.; Other Names: Imotope
Experimental: Group 3 - Phase II (IMCY-0141 Dose 3); Administration of IMCY-0141, 1350 μg combined with alum adjuvant.	Drug: IMCY-0141; The investigational medicinal product (IMP) consists in a small synthetic peptide (23 amino acids - IMCY-0141) combining a known human epitope of MOG flanked with a thioredox motif, presented in the form of a freeze-dried sterile powder and diluent for subcutaneous (SC) administration. The diluent includes the adjuvant aluminium hydroxide (alum) at a concentration of 900 μg/mL. Treatment will be injected within 4h of resuspension of the powder with the diluent. Treatment will consist of 6 immunizations (separated by 14 days) of the IMP by SC injection in the upper arm, in the region of the triceps (lateral part of the arm, midway between the elbow and the shoulder). Half of the dose to be administered will be injected concomitantly in both arms.; Other Names: Imotope
Placebo Comparator: Group 4 (Placebo Group) - Phase II; Administration of placebo combined with alum adjuvant.	Drug: Placebo; The placebo will be administered by subcutaneous route, once every two weeks for 6 times. Placebo will be administered to patients randomized in the "placebo" group during Phase II only.
Active Comparator: Group 5 (Active Control Group) - Phase II; Parallel, Open-Label, Active Control Group Oral administration of Dimethyl Fumarate (DMF) given according to its SmPC for the whole duration of the study.	Drug: Dimethyl Fumarate; Dimethyl Fumarate (DMF) will be given orally, according to its SmPC for the whole duration of the study. Dimethyl Fumarate (DMF) will be administered to patients randomized in the active control group during Phase II only.; Other Names: DMF

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Ph I Primary safety endpoint (1) - Solicited injection site and systemic AEs	Occurrence, intensity and relationship of any solicited injection site and systemic adverse events (AEs) during a 7-day follow-up period (i.e., day of study product administration and 6 subsequent days) after each IMCY-0141 administration analysing local injection site and systemic adverse events, clinical and laboratory data.	Up to 36 weeks
Ph I Primary safety endpoint (2) - Unsolicited injection site and systemic AEs	Occurrence, intensity and relationship of any unsolicited injection site (local) and systemic AEs occurring throughout the study period.	Up to 36 weeks
Ph I Primary safety endpoint (3) - All SAEs	Occurrence and relationship of all serious adverse events (SAEs) occurring throughout the study period.	Up to 36 weeks
Ph I Primary safety endpoint (4) - Abnormalities on different parameters	Occurrence and relationship of any abnormality in physical examination, vital signs, 12-lead ECG, MRI, haematological and biochemical laboratory parameters.	Up to 36 weeks
Ph II Primary efficacy endpoint - Number of CUAL	Total cumulative number of CUAL observed on brain MRI scans (centralized reading) from week 12 till week 36 vs placebo.	Week 12 to Week 36

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Ph I/II Secondary endpoint (1) - Relapse rate	Annualized relapse rate at week 36 vs baseline	At Week 36
Ph I/II Secondary endpoint (2) - Relapse-free rate	Proportion of relapse-free patients at week 36 vs baseline	At Week 36
Ph I/II Secondary endpoint (3) - EDSS Score	EDSS score at week 36 vs screening	At Week 36
Ph I/II Secondary endpoint (4) - Neurofilament light chains levels	Neurofilament light chains levels in the serum of the patient (sNfL) at baseline, weeks 2, 4, 6, 8, 10, 12, 24 and 36.	Up to 36 weeks
Ph II Secondary endpoint (1) - Solicited injection site and systemic AEs	Occurrence, intensity and relationship of any solicited local and systemic adverse event (AE) during a 7-day follow-up period (i.e., day of study drug administration and 6 subsequent days) after each IMCY-0141 administration.	Up to 36 weeks
Ph II Secondary endpoint (2) - Unsolicited injection site and systemic AEs	Occurrence, intensity and relationship of any unsolicited injection site (local) and systemic AEs occurring throughout the study period.	Up to 36 weeks
Ph II Secondary endpoint (3) - All SAEs	Occurrence and relationship of all serious adverse events (SAEs) occurring throughout the study period.	Up to 36 weeks
Ph II Secondary endpoint (4) - Abnormalities on different parameters	Occurrence, intensity and relationship of any abnormality in physical examination, vital signs, 12-lead ECG, MRI, haematological and biochemical laboratory parameters.	Up to 36 weeks

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
To assess the disease activity and the efficacy of IMCY-0141 on MRI parameters and if any IMCY-0141 dose(s) offer superior efficacy.	Measured by cumulative number of CUAL, number of new Gadolinium-enhancing T1 lesions, number of active (new or enlarging) T2/FLAIR lesions, number of persistent Gadolinium enhancing T1 lesions vs baseline and number of shrinking FLAIR lesions versus baseline.	Up to 36 weeks
To assess the disease activity	Measured by volume change versus baseline in T2/FLAIR lesions, Gadolinium-enhancing T1 lesions, shrinking FLAIR lesions and Brain (White matter, grey matter, cortical grey matter, lateral, thalamus)	Up to 36 weeks
To evaluate and characterize the MOG-specific CD4+ T cells induced by IMCY-0141 and its impact on autoreactive T-cell responses specific for myelin proteins.	Changes in cytolytic CD4+ T cell response specific for IMCY-0141, in CD4+ and CD8+ effector T cell responses specific for myelin proteins MOG and/or PLP	Up to 36 weeks
Impact of IMCY-0141 on auto-antibodies against myelin proteins (MOG,PLP)	Detection of change in MS associated auto-antibodies	Up to 36 weeks

Collaborators and Investigators

• Sponsor: Imcyse SA
• Investigators: Principal Investigator: Vitalie LISNIC, Prof., ARENSIA Exploratory Medicine, Moldova

Publications and helpful links

General Publications

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Study record dates

Study Major Dates

• Study Start (Actual): April 12, 2022
• Primary Completion (Estimated): May 23, 2025
• Study Completion (Estimated): December 31, 2025

Study Registration Dates

• First Submitted: June 1, 2022
• First Submitted That Met QC Criteria: June 8, 2022
• First Posted (Actual): June 14, 2022

Study Record Updates

• Last Update Posted (Actual): March 8, 2024
• Last Update Submitted That Met QC Criteria: March 7, 2024
• Last Verified: March 1, 2024

More Information

Terms related to this study

• Keywords: Multiple Sclerosis; Relapsing-Remitting Multiple Sclerosis; RR-MS; Synthetic peptide
• Additional Relevant MeSH Terms: Pathologic Processes; Nervous System Diseases; Immune System Diseases; Demyelinating Autoimmune Diseases, CNS; Autoimmune Diseases of the Nervous System; Demyelinating Diseases; Autoimmune Diseases; Multiple Sclerosis; Sclerosis; Multiple Sclerosis, Relapsing-Remitting; Physiological Effects of Drugs; Immunosuppressive Agents; Immunologic Factors; Dermatologic Agents; Dimethyl Fumarate
• Other Study ID Numbers: IMCY-MS-001; 2021-004974-67 (EudraCT Number)

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