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EAN 2026 | The mechanisms underlying multifocal motor neuropathy

Nicolas Dubuisson, MD, John Radcliffe University Hospital, Oxford, UK, and Cliniques Universitaires Saint-Luc, Brussels, Belgium, discusses research into the mechanisms underlying multifocal motor neuropathy (MMN). He outlines efforts to identify and characterize the B cells responsible for producing pathogenic anti-GM1 antibodies, with the aim of developing more targeted therapies for patients with MMN. This interview took place at the 12th Congress of the European Academy of Neurology (EAN) in Geneva, Switzerland.

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Transcript

My work in Oxford is dedicated to MMN, so Multifocal Motor Neuropathy, where basically I try to find out the origin of the disease. So this MMN is caused by an antibody, an IgM monoclonal antibody called GM1. And basically we know that this GM1 is deleterious for the nerves, but we don’t know where it comes from. So basically my aim is to pinpoint the B cells, so the lymphocytes that are creating, that are secreting this antibody...

My work in Oxford is dedicated to MMN, so Multifocal Motor Neuropathy, where basically I try to find out the origin of the disease. So this MMN is caused by an antibody, an IgM monoclonal antibody called GM1. And basically we know that this GM1 is deleterious for the nerves, but we don’t know where it comes from. So basically my aim is to pinpoint the B cells, so the lymphocytes that are creating, that are secreting this antibody. And we were able to basically sequence the antibody of interest with all the mutation profile, et cetera. And so we can now use that, clone it, and test it on iPSC. So it’s like nerves that are done in vitro, if you want. And we can test it on this iPSC to see how it affects the nerve and how deleterious it is for the nerve and based on that we can now design eventually more targeted therapies so that’s basically the aim of the project.

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