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Method of Risk Management for Patients Undergoing Natalizumab Treatment

a risk management and patient technology, applied in the direction of drugs, instruments, nervous disorders, etc., can solve the problems of severe and often fatal neurological injury, nmab disrupts the transmigration of these leukocytes,

Inactive Publication Date: 2011-12-08
SEEDLINGS LIFE SCI VENTURES
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In so doing, NMAB disrupts the transmigration of these leukocytes across endothelial tissue and into inflamed parenchymal tissue.
Unfortunately, in 2005 it was observed that three patients who had been treated with NMAB were diagnosed with Progressive Multi-focal Leukoencephalopathy (PML), a rare and often fatal disease of the brain that has been observed historically in immunosuppressed patients.
Like MS, PML causes demyelination and can result in severe and often fatal neurological injury.

Method used

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Embodiment Construction

[0006]The invention relates in part to an appreciation that should PML or another opportunistic CNS disease occur as a result of CNS immunosuppression secondary to NMAB therapy, then the sooner NMAB therapy is discontinued, the more likely a patient will minimize CNS damage due to a CNS opportunistic disease, and the more likely that that same patient will recover. Because MS can be such a devastating disease, because treatment options for MS (and other medical disorders that may potentially benefit from NMAB therapy) are relatively limited, because NMAB has shown significant clinical benefit to MS patients in proper clinical studies, and because all medications carry risk and are assessed by their risk to benefit ratio, it may not be necessary to permanently remove NMAB as a therapeutic option for patients. Rather, it may be possible to create a means of managing the risk associated with NMAB, and in particular to produce a method of screening and monitoring patients undergoing NMA...

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Abstract

Progressive multifocal leukoencephalopathy (PML) has been identified in patients taking natalizumab (NMAB) for the treatment of multiple sclerosis (MS). This patent application provides a novel method of patient screening and monitoring intended to decrease the risk of PML and other opportunistic central nervous system (CNS) diseases in patients undergoing MS therapy with NMAB, and proposes a novel method of screening and monitoring intended to decrease the risk of opportunistic disease processes of the CNS during the treatment of other medical disorders with NMAB.

Description

This application is divided from and claims priority to U.S. patent application Ser. No. 11 / 885,615 filed Mar. 25, 2008. BACKGROUND OF THE INVENTION[0001]Natalizumab (NMAB) is a humanized antibody that binds to surface-expressed integrins on all leukocytes except neutrophils, and inhibits adhesion molecules on these leukocytes from binding to their counter-receptors. In so doing, NMAB disrupts the transmigration of these leukocytes across endothelial tissue and into inflamed parenchymal tissue. NMAB additionally inhibits recruitment and inflammatory activity of activated immune cells. Although the exact mechanism of action of NMAB is unclear, it is thought that at least part of the therapeutic benefit of NMAB in the treatment of MS is due to NMAB's ability to decrease the number of activated inflammatory cells, including T-lymphocytes, across the blood-brain barrier (BBB), thus decreasing the degree of inflammation within the CNS.[0002]MS is considered to be a chronic inflammatory ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K49/00A61P25/00
CPCC12Q1/6883C12Q1/689C12Q1/70G01N2800/285G01N33/56983G01N33/6896G01N33/9493G01N33/56911A61P25/00
Inventor RUBIN, KEITH H.GLAZER, STEVEN
Owner SEEDLINGS LIFE SCI VENTURES
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