Mavrilimumab
Monoclonal antibody | |
---|---|
Type | Whole antibody |
Source | Human |
Target | GMCSF receptor &alpha-chain |
Identifiers | |
CAS Number | 1085337-57-0 |
ATC code | none |
IUPHAR/BPS | 7785 |
UNII | 1158JD1P9A |
Chemical data | |
Formula | C6706H10438N1762O2104S54 |
Molecular mass | 143.2 kg/mol |
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Mavrilimumab is a human monoclonal antibody designed for the treatment of rheumatoid arthritis.[1] It is an inhibitor of human granulocyte macrophage colony-stimulating factor receptor (GM-CSF-R).[2]
Mavrilimumab was discovered as CAM-3001 by Cambridge Antibody Technology and is being developed by MedImmune, Inc.[3]
It has so far shown positive results in phase 1[2] and phase 2a clinical trials.[4] A phase 2a trial which studied mavrilimumab doses of up to 100 mg, reported that 55.7% of subjects met the primary endpoint of "a ≥1.2 decrease from baseline in Disease Activity Score (DAS28-CRP) at week 12" (vs. only 34.7% of placebo subjects).[4] Two further clinical studies are reported to be underway in rheumatoid arthritis patients to investigate these effects further.[5]
Preliminary results, from a phase IIb study investigating doses of 30, 100 and 150 mg mavrilimumab over 24 weeks, were presented at a rheumatology conference in Rome, in August 2015. At week 24, 40.15% of patients in the top dose group achieved an ACR50 response compared to 3.7% in the placebo group. Rates of remission and low disease activity were reported to be significantly higher in the 150-mg group. [6] Patients who completed this and a second US clinical study were enrolled into an open-label extension study to evaluate the longer term efficacy and safety of mavrilumumab for up to 74 weeks of treatment, presented at a rheumatology conference in San Francisco in November 2015. The authors concluded that 150 mg mavrilimumab was optimal for patients who had prior inadequate response to non-biological DMARDs compared to a dose of 100 mg every other week which had produced positive results in patients still receiving methotrexate.[7]
References
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- ↑ http://www.ama-assn.org/resources/doc/usan/mavrilimumab.pdf
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