progressive multifocal leukoencephalopathy (PML)

People with multiple sclerosis (MS) who develop progressive multifocal leukoencephalopathy (PML) as a side effect of Tysabri (natalizumab) often see their neurological symptoms worsen severely during the infection and their disability gradually accumulate over time. That’s according to a study in Austria, which also showed that most disability progression…

A pair of experts are calling for genetic tests to be developed to identify people at higher risk of developing progressive multifocal leukoencephalopathy (PML), a serious brain infection that can occur as a side effect of certain multiple sclerosis (MS) treatments. “The availability of a simple, relatively inexpensive test…

Risk of Severe COVID-19 Not Raised by Immunosuppressive DMTs Here’s the latest on whether disease-modifying therapies (DMTs) raise the risk of a person having a bad case of COVID-19 if infected with the novel coronavirus. Researchers report here that DMTs don’t increase that risk. But don’t confuse this information…

Helper T-cells Drive Transition from RRMS to SPMS, Study Suggests The T-cells referred to in this study, known as CD4+ cells, are believed to play a significant part in central nervous system inflammation. The disease-modifying treatment Lemtrada (alemtuzumab) is designed to destroy these misbehaving T-cells, along with B-cells, so…

The journal JAMA Neurology recently reported that a 78-year-old man with progressive multiple sclerosis died after being diagnosed with progressive multifocal leukoencephalopathy (PML), a brain disease. The man, diagnosed with MS about 30 years ago, had been treated for two years with Ocrevus (ocrelizumab), and had no previous…

I rolled onto the neurology ward of the hospital that has been dealing with my disease from the beginning. The nurses, whom I’ve met innumerable times, opened with their normal jolly, “How are you?” I can never resist, “Well, I have got MS!” It was 8 in the morning. I’d…

Editor’s note: “Need to Know” is a series inspired by common forum questions and comments from readers. Have a comment or question about MS? Visit our forum. This week’s question is inspired by the forum topic “Does PML worry you?” from April 18. The world of multiple sclerosis (MS)…

Two years after the approval of Ocrevus (ocrelizumab), the latest data continue to support the benefits of the so-called “game-changing” therapy in multiple sclerosis (MS), while new insights highlight its neuronal protective effects and safety. Multiple Sclerosis News Today had the opportunity to speak with Hideki Garren,…

It’s been a big week for interesting stories, as the annual meeting of the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS) has just concluded. The conference offered much to engage healthcare professionals and researchers, but the following are some presentations that appealed to me as a multiple…

WeHealth, PathMaker Collaborating to Develop MyoRegulator as Noninvasive Treatment for Spasticity I’m one of the many people with multiple sclerosis (MS) for whom spasticity is a significant problem. This is a nonmedicinal approach to dealing with it. I hope it doesn’t take too long to make this…

A mutation in a mouse model of the John Cunningham (JC) virus, which causes progressive multifocal leukoencephalopathy (PML), allows the virus to evade the host immune responses in people with multiple sclerosis (MS), according to a study into the mechanisms of PML. Infection with the JC virus most often passes unnoticed in healthy…

A case report of a woman with relapsing-remitting multiple sclerosis (MS), who developed progressive multifocal leukoencephalopathy (PML) after natalizumab therapy, found that the immune-boosting molecule interleukin-2 (IL-2) might be a viable therapeutic option to fight this life-threatening complication although further study is needed. The case report, “Use of interleukin-2 for…

Certain therapies used to treat multiple sclerosis (MS) have been associated with opportunistic infections of the central nervous system, including progressive multifocal leukoencephalopathy (PML), a rare but often fatal brain disorder caused by the John Cunningham (JC) virus. The question of whether the risk for opportunistic infections to MS patients outweighs…

The European Medicines Agency Pharmacovigilance Risk Assessment Committee (PRAC), responsible for assessing and monitoring safety issues for human medicines, completed a review on the risk for progressive multifocal leukoencephalopathy (PML) in multiple sclerosis (MS) patients treated with the medicine Tysabri (natalizumab). The issued guidelines have the objective of minimizing patients’ risk.

In a recent study of more than 1,200 patients with multiple sclerosis (MS), a research team reported that treatment with the drug natalizumab (Tysabri) could lead to a tenfold increase in the levels of blood antibodies associated with a virus causing a rare but severe brain disease known as progressive multifocal…

Multiple sclerosis (MS) patients treated with natalizumab have an increased risk of developing high levels of antibodies associated with a virus causing a rare, but often fatal, brain infection known as progressive multifocal leukoencephalopathy (PML), researchers reported. Their study, “Therapy with natalizumab is associated with high JCV seroconversion and rising JCV index values,”…

A panel of neurologists from the U.K. and Ireland recently developed practical consensus guidelines for monitoring multiple sclerosis (MS) patients on natalizumab (Tysabri) therapy for the risk of developing progressive multifocal leukoencephalopathy (PML), a life-threatening viral infection caused by the John Cunningham (JC) virus. The panel was summoned by…