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Evaluation of Quality of Life (QoL) in Subjects With Highly Active Relapsing Multiple Sclerosis (MS) (CLARIFY MS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03369665
Recruitment Status : Completed
First Posted : December 12, 2017
Last Update Posted : January 6, 2022
Information provided by (Responsible Party):
Merck KGaA, Darmstadt, Germany

Brief Summary:
The main purpose of the study is to assess the health-related quality of life (HRQoL) through the Multiple Sclerosis Quality of Life-54 Questionnaire (MSQoL-54) scale in highly-active relapsing multiple sclerosis (RMS) subjects treated with Mavenclad® for 2 years (24 months).

Condition or disease Intervention/treatment Phase
Multiple Sclerosis Drug: Mavenclad® Phase 4

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 485 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A 2-Year Prospective Study to Assess Health-related Quality of Life In Subjects With Highly-Active Relapsing Multiple Sclerosis Treated With Mavenclad® (CLARIFY MS)
Actual Study Start Date : June 20, 2018
Actual Primary Completion Date : November 12, 2021
Actual Study Completion Date : November 12, 2021

Resource links provided by the National Library of Medicine

Drug Information available for: Cladribine

Arm Intervention/treatment
Experimental: Mavenclad® Drug: Mavenclad®
Subjects will receive Mavenclad® 3.5 milligram per kilogram (mg/kg) of body weight over 2 years, administered as 1 treatment course of 1.75 mg/kg per year.
Other Name: Cladribine

Primary Outcome Measures :
  1. Change From Baseline in Multiple Sclerosis Quality of Life-54 Questionnaire (MSQoL-54) Scale Score at Month 24 [ Time Frame: Baseline, Month 24 ]

Secondary Outcome Measures :
  1. Treatment Satisfaction Assessed by Treatment Satisfaction Questionnaire Medication Version 1.4 (TSQM v1.4) Scale at Month 6 [ Time Frame: Month 6 ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Highly active RMS as defined by:
  • One relapse in the previous year and at least 1 T1 Gadolinium (Gd)+ lesion or 9 or more T2 lesions, while on therapy with other disease modifying drugs (DMDs).
  • Two or more relapses in the previous year, whether on DMD treatment or not.
  • Expanded Disability Status Scale (EDSS) score less than equals to (<=) 5.0.
  • Other protocol defined inclusion criteria could apply.

Exclusion Criteria:

  • Positive hepatitis C or hepatitis B surface antigen test and/or core antibody test for immunoglobulin G (IgG) and/or immunoglobulin M (IgM).
  • Current or previous history of immune deficiency disorders including a positive human immunodeficiency virus (HIV) result.
  • Currently receiving immunosuppressive or myelosuppressive therapy with, for example, monoclonal antibodies, methotrexate, cyclophosphamide, cyclosporine or azathioprine, or chronic use of corticosteroids.
  • History of tuberculosis, presence of active tuberculosis, or latent tuberculosis
  • Presence of Progressive Multifocal Leukoencephalopathy (PML) in Magnetic Resonance Imaging (MRI).
  • Active malignancy.
  • Other protocol defined exclusion criteria could apply.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03369665

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Sponsors and Collaborators
Merck KGaA, Darmstadt, Germany
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Study Director: Medical Responsible Merck KGaA, Darmstadt, Germany
Additional Information:
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Responsible Party: Merck KGaA, Darmstadt, Germany Identifier: NCT03369665    
Other Study ID Numbers: MS700568_0021
2017-002632-17 ( EudraCT Number )
First Posted: December 12, 2017    Key Record Dates
Last Update Posted: January 6, 2022
Last Verified: December 2021
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: We are committed to enhancing public health through responsible sharing of clinical trial data. Following approval of a new product or a new indication for an approved product in both the US and European Union, the study sponsor and/or its affiliated companies will share study protocols, anonymized patient data and study level data, and redacted clinical study reports with qualified scientific and medical researchers, upon request, as necessary for conducting legitimate research. Further information on how to request data can be found on our website
Supporting Materials: Study Protocol
Statistical Analysis Plan (SAP)
Clinical Study Report (CSR)
Analytic Code
Time Frame: Within six months after the approval of a new product or a new indication for an approved product in both the United States and the European Union
Access Criteria: Qualified scientific and medical researchers can request the data. Such requests must be submitted in writing to the company's portal and will be internally reviewed regarding criteria for researchers' qualification and legitimacy of the research proposal.

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Merck KGaA, Darmstadt, Germany:
Multiple sclerosis
Health-related Quality of Life
Additional relevant MeSH terms:
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Multiple Sclerosis
Pathologic Processes
Demyelinating Autoimmune Diseases, CNS
Autoimmune Diseases of the Nervous System
Nervous System Diseases
Demyelinating Diseases
Autoimmune Diseases
Immune System Diseases
Antineoplastic Agents
Immunosuppressive Agents
Immunologic Factors
Physiological Effects of Drugs