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The primary purpose of this study is to demonstrate pharmacokinetic bioequivalence of ofatumumab injected by Pre-filled Syringe (PFS) versus Auto-Injector (AI) devices and thereby establish a bridge between the ongoing Phase 3 program and the to-be-marketed drug-device combinations
Characterization of the pharmacokinetics of ofatumumab administered via the PFS used inclinical trials and the to-be-marketed autoinjector at the clinical dose of 20 mg will be conducted after an initial depletion of CD20 positive B-cells. Comparing the ofatumumab pharmacokinetics between the two drug-device combinations only after the induction period is expected to reduce initial high variability due to target-mediated clearance. This ensures a more stable baseline for PK comparison in a parallel group study design and reflects the clinical situation where systemic concentrations are at steady-state. In order to justify the resulting longterm B-cell depletion, a PK comparability study between the PFS and the AI can only be conducted in MS patients rather than in healthy subjects to balance the risk/benefit and to obtain PK data from the relevant patient population. In order for patients to obtain a clinical benefit from participation in the study, continued treatment with ofatumumab will be offered to all eligible patients through enrollment into the open-label Phase 3 extension study (separate protocol, COMB157G2399).
A secondary objective of the study is to characterize the pharmacokinetics following subcutaneous administration of ofatumumab to either the abdominal region or the thigh which are two injections sites allowed in the Phase 3 study and planned for inclusion in the label. Another secondary objective is assessment of immunogenicity during the 12 weeks duration of the study addressing potential differences in ofatumumab anti-drug antibody formation between the PFS and AI devices as well as between abdomen and thigh injection sites.
An exploratory objective of the study includes evaluation of the PK and PD during the induction phase in order to obtain an improved understanding of the time-course of the initial depletion of CD20-positive B-cells and to establish an improved data source for PK/PD modelling. An additional exploratory objective of the study will be a feasibility assessment of using Neurofilament Lightchain (NfL) concentrations to estimate early response of NfL to treatment initiation and to estimate the relative timing of NfL increases and the occurrence of Gd-lesions on MRI.
Not yet recruiting
Published on BioPortfolio: 2018-06-25T04:40:12-0400
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A form of multiple sclerosis characterized by a progressive deterioration in neurologic function which is in contrast to the more typical relapsing remitting form. If the clinical course is free of distinct remissions, it is referred to as primary progressive multiple sclerosis. When the progressive decline is punctuated by acute exacerbations, it is referred to as progressive relapsing multiple sclerosis. The term secondary progressive multiple sclerosis is used when relapsing remitting multiple sclerosis evolves into the chronic progressive form. (From Ann Neurol 1994;36 Suppl:S73-S79; Adams et al., Principles of Neurology, 6th ed, pp903-914)
A non-glycosylated form of interferon beta-1 that has a serine at position 17. It is used in the treatment of both RELAPSING-REMITTING MULTIPLE SCLEROSIS and CHRONIC PROGRESSIVE MULTIPLE SCLEROSIS.
An autoimmune disorder mainly affecting young adults and characterized by destruction of myelin in the central nervous system. Pathologic findings include multiple sharply demarcated areas of demyelination throughout the white matter of the central nervous system. Clinical manifestations include visual loss, extra-ocular movement disorders, paresthesias, loss of sensation, weakness, dysarthria, spasticity, ataxia, and bladder dysfunction. The usual pattern is one of recurrent attacks followed by partial recovery (see MULTIPLE SCLEROSIS, RELAPSING-REMITTING), but acute fulminating and chronic progressive forms (see MULTIPLE SCLEROSIS, CHRONIC PROGRESSIVE) also occur. (Adams et al., Principles of Neurology, 6th ed, p903)
The most common clinical variant of MULTIPLE SCLEROSIS, characterized by recurrent acute exacerbations of neurologic dysfunction followed by partial or complete recovery. Common clinical manifestations include loss of visual (see OPTIC NEURITIS), motor, sensory, or bladder function. Acute episodes of demyelination may occur at any site in the central nervous system, and commonly involve the optic nerves, spinal cord, brain stem, and cerebellum. (Adams et al., Principles of Neurology, 6th ed, pp903-914)
Multiple protein bands serving as markers of specific ANTIBODIES and detected by ELECTROPHORESIS of CEREBROSPINAL FLUID or serum. The bands are most often seen during inflammatory or immune processes and are found in most patients with MULTIPLE SCLEROSIS.
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