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A Phase III, randomized, double-blind, placebo-controlled, multi-center clinical trial of oral cladribine in subjects with a first clinical event at high risk of converting to MS

A Phase III, randomized, double-blind, placebo-controlled, multi-center clinical trial of oral cladribine in subjects with a first clinical event at high risk of converting to MS.

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2009/091/000061
Enrollment
642
Registered
2010-01-28
Start date
Unknown
Completion date
Unknown
Last updated
2021-11-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: null- Patients with a first clinical event at high risk of converting to Multiple Sclerosis

Interventions

Intervention1: Low-dose oral cladribine: Oral cladribine Low-dose oral cladribine - 1.75 mg/kg/year. Dosed once/week for 4 weeks at the start of a cycle. Intervention2: High-dose oral cladribine: Low

Sponsors

Merck Serono SA
Lead Sponsor
PAREXEL International Clinical Research Private Limited
Collaborator

Eligibility

Inclusion criteria

Inclusion criteria: To be eligible for entry into this study, subjects must fulfill all of the following criteria: 1. Be male or female between 18 and 55 years old, inclusive 2. Must weigh between 40-120 kg, inclusive 3. Has experienced a single, first clinical event suggestive of MS within 75 days prior to Screening (clock starts 24 hours after onset). The event must be a new neurological abnormality present for at least 24 hours, either mono- or polysymptomatic 4. Has at least two clinically silent lesions on the T2-weighted MRI scan, at screening, with a size of at least 3 mm, at least one of which is ovoid or periventricular or infratentorial on screening MRI 5. Has EDSS 0 - 5.0 at Screening 6. Have no medical history or evidence of latent tuberculosis infection (LTBI) or active tubercular disease (TB), as evidenced by the Mantoux TB skin test or a comparable sensitive test, according to local regulation guidelines, if Mantoux test is not available and/or chest X-ray (Follow TB Guideline; Appendix C) 7. All hematological parameters must be normal at Screening according to the normal ranges provided by the centralized laboratory performing all the assessments. 8. If female, she must: • be neither pregnant nor breast-feeding, nor attempting to conceive and • use a highly effective method of contraception throughout the entire duration of the study and for 6 months (6 menstrual cycles) following completion of the last dose of study medication. A highly effective method of adequate contraception is defined as one which results in a low failure rate (i.e. less than1% per year) when used consistently and correctly such as implants, injectables, combined oral contraceptives, some IUDs, sexual abstinence or a vasectomised partner. For the purpose of this trial, women of childbearing potential are defined as: â??All female subjects after puberty unless they are post-menopausal for at least two years, are surgically sterile or are sexually inactive.â?? 9. If male, he must be willing to use contraception to avoid contributing to pregnancies throughout the entire duration of the study and for 90 days following the last dose of study medication 10. Be willing and able to comply with study procedures for the duration of the study 11. Voluntarily provide written informed consent, including, for USA, subject authorization under Health Insurance Portability and Accountability Act (HIPAA) (see Appendix J), prior to any study-related procedure that is not part of normal medical care, and with the understanding that the subject may withdraw consent at any time without prejudice to their future medical care. 12. Must refuse any treatment already available for CIS such as Interferons and Glatiramer Acetate, entering the Initial Treatment Period of the Study. NOTE: Confirmation that the subject is not pregnant must be established by a negative serum human chorionic gonadotropin (hCG) pregnancy test at Screening and a negative urine pregnancy test on Study Day 1. A pregnancy test is not required if the subject is post-menopausal or surgically sterilized.

Exclusion criteria

Exclusion criteria: To be eligible for inclusion in this trial the subject must not meet any of the following criteria: 1. Subject has a diagnosis of multiple sclerosis (per McDonald criteria, 2005) 2. Subject has any other disease that could better explain the subjectâ??s signs and symptoms 3. Subject has complete transverse myelitis or bilateral optic neuritis 4. Subject uses or has used any other approved MS disease modifying drug (DMD) 5. Subject has used any investigational drug or undergone an experimental procedure within 12 weeks prior to SD1. 6. Subject who received oral or systemic corticosteroids or ACTH within 30 days prior to screening MRI. The MRI has to be performed 30 days after the oral or systemic corticosteroids or ACTH treatment. In case this interferes with MRI timing the screening period can be extended accordingly. 7. Subject has abnormal total bilirubin, or aspartate aminotransferase (AST) or alanine aminotransferase (ALT) or alkaline phosphatase greater than 2.5 x ULN 8. Subject suffers from current autoimmune disease other than MS 9. Subject suffers from psychiatric illness (including history of, or current, severe depressive disorders and/or suicidal ideation) that in the opinion of the investigator creates undue risk to the subject or could affect compliance with the study protocol 10. Subject suffers from major medical illness such as cardiac (e.g. angina, congestive heart failure or arrhythmia), endocrinologic, hepatic, immunologic, metabolic, renal, pulmonary, gastrointestinal, dermatologic, or other major disease that would preclude the administration of oral cladribine 11. Subject has a history of seizures not adequately controlled by medications. 12. Subject has a known allergy to cladribine, IFN-beta, the excipient(s) of the study medications, or to gadolinium-DTPA 13. Has any renal condition that would preclude the administration of gadolinium (e.g. acute or chronic severe renal insufficiency (GFR 14. Has a history of chronic or clinically significant hematological abnormalities 15. History of active or chronic infectious disease or any disease that compromises immune function (e.g. HIV+, HTLV-1, Lyme disease, LTBI or TB, insulin-dependent diabetes). 16. Subject has previously been screened in this study thus signed an informed consent and then withdrawn 17. Subject has received any immunomodulatory or immunosuppressive therapyat any time prior to Screening, including, but not limited to, the following products: any interferon, glatiramer acetate (Copolymer I), cyclophosphamide, cyclosporine, methotrexate, linomide, azathioprine, mitoxantrone, teriflunomide, laquinimod, cladribine, total lymphoid irradiation, anti-lymphocyte monoclonal antibody treatment (e.g. natalizumab, alemtuzumab/Campath, anti-CD4), intravenous immunoglobuline G (IVIG), cytokines or anti-cytokine therapy 18. Subject has received experimental MS treatment 19. Subject has a history of alcohol or drug abuse 20. Subject has intolerance or any contraindication to both paracetamol (acetaminophen) and ibuprofen 21. Inability to administer subcutaneous injections either by self or by caregiver <br

Design outcomes

Primary

MeasureTime frame
The single primary endpoint for the overall study, which will be determined during the Initial Treatment Period, is time to conversion to MS (from randomization), according to the revised McDonald criteria (2005)Timepoint: 2 years

Secondary

MeasureTime frame
Time to conversion to clinically definite MS (from randomization), according to the Poser Criteria, defined by either a 2nd attack or a sustained increase (³1.5 points) in the EDSS score which will be determined during the initial treatment periodTimepoint: 2 years

Countries

Argentina, Austria, Belgium, Bosnia and Herzegovina, Bulgaria, Canada, Chile, Croatia, Czech Republic, Estonia, Finland, France, Georgia, Germany, Greece, India, Italy, Lebanon, Mexico, Norway, Poland, Portugal, Republic of Korea, Romania, Saudi Arabia, Serbia, Singapore, Spain, Sweden, Taiwan, Thailand, The former Yugoslav Republic of Macedonia, Turkey, United Arab Emirates, United Kingdom, United States of America

Contacts

Public ContactDr Khokan K Debnath
khokan.debnath@merck.co.in022-66609003

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026