Aquaporin-4 (AQP4)

Higher levels of self-reactive antibodies against aquaporin-4 protein (AQP4), which drives neuroinflammation in most cases of neuromyelitis optica spectrum disorder (NMOSD), correlate with more severe relapses and visual disability, according to a large study. Even after treatment with immunosuppressive agents, patients with high anti-AQP4 antibodies experienced more severe relapses.

International research has uncovered a series of immune-related events that might contribute to the abnormal immune responses against the aquaporin-4 protein (AQP4), which drives neuroinflammation in cases of neuromyelitis optica spectrum disorder (NMOSD). Among the implicated immune cell types are natural killer T-cells (NKT), which seem to be first…

The U.S. Food and Drug Administration (FDA) has approved Ultomiris (ravulizumab-cwvz) to treat adults with neuromyelitis optica spectrum disorder (NMOSD) who are positive for antibodies against the aquaporin-4 (AQP4) protein. About 75% of people with NMOSD produce antibodies that bind to AQP4, according to the therapy’s developer, Alexion…

Under normal circumstances, immune B-cells train T-cells, another type of immune cell, on which targets not to attack, preventing the development of neuromyelitis optica spectrum disorder (NMOSD), according to a study in mice. This training occurs in the thymus gland, a small organ behind the breastbone that works as…

Health Canada has approved Uplizna (inebilizumab-cdon) to treat adults in the country with neuromyelitis optica spectrum disorder (NMOSD) who test positive for disease-driving anti-aquaporin-4 (AQP4) antibodies. The decision adds Canada to the list of nations where the medication is now available. The intravenous or into-the-vein infusion, developed by…

Certain long non-coding RNAs (lncRNAs) — a family of molecules that can regulate gene activity — tied to immune function were at significantly higher levels in the blood of people with neuromyelitis optica spectrum disorder (NMOSD) compared with the general population, a study reports. All four evaluated markers —…

Ultomiris (ravulizumab) is now approved in Canada to treat adults with neuromyelitis optica spectrum disorder (NMOSD) who are positive for antibodies against aquaporin-4 (AQP4). According to a press release from Alexion Canada, which will market Ultomiris in the country, it’s the “first and only” long-acting therapy…

Soliris (eculizumab) has been approved in China to treat adults with neuromyelitis optica spectrum disorder, known as NMO or NMOSD, who test positive for antibodies against the aquaporin-4 (AQP4) protein. The therapy — which works to reduce the risk of relapse and ease inflammation among patients — was approved…

People with a genetic makeup that causes them to be more susceptible to COVID-19 are nearly five times as likely to develop neuromyelitis optica spectrum disorder (NMOSD) associated with antibodies against aquaporin-4 (AQP4), a study finds. Evidence for a cause and effect, or causal, link between COVID-19 and NMOSD…

Long-term use of the approved therapy Soliris (eculizumab) safely and effectively prevents relapses in the real world in people with neuromyelitis optica spectrum disorder (NMOSD) and antibodies against the AQP4 protein. That’s according to two-year interim data from an observational study in Japan, where Soliris was approved in…