research

Scientists announced positive and encouraging outcomes from two clinical studies — running as part of the larger Human Vaccines Project — aiming to unravel the mechanisms that underlie our immune system’s ability to fight disease. The results are expected to shed light on unknown aspects of the immune system that scientists at the Human Vaccines Project, a public-private partnership, hope to translate into new trials for diseases linked to the immune system, such as multiple sclerosis. Results from the trials — the Human Immunome Program and the Immunity to Hepatitis B Vaccine study — were recently presented at the World Vaccine and Immunotherapy Congress in San Diego, California. In the ongoing Human Immunome Program, researchers are trying to fill a major knowledge gap in the components and mechanisms of the immune system that allow it to recognize various threats, from viruses, parasites and bacteria to cancer cells. They are using blood samples from healthy people to analyze, at an unprecedented depth, the whole repertoire of genes that make up the surface receptors of immune B- and T-cells, the core cells of the immune system’s defence mechanisms. Results will likely advance how scientists diagnose and treat various diseases, and could prompt the development of new, improved vaccines. "We are studying the immune systems of healthy individuals to identify common elements, which could be important for facilitating new and improved vaccines," James E. Crowe Jr., MD, director of Vanderbilt University Medical Center's Vaccine Center, the leading scientific institution of the Human Immunome Program, said in a press release. Researchers will cross the sequencing information with participants' microbiome composition — the natural community of microbes that reside in an organism and are key for a healthy immune system — and other health and sociodemographic characteristics. "We also plan to expand these studies to complete the catalog across different demographics and geographies and compare healthy subjects with individuals with immune-mediated diseases such as multiple sclerosis, cancer and Alzheimer's, which could also reveal novel diagnostic markers," Crowe said. The second study, the Immunity to Hepatitis B Vaccine trial — currently recruiting participants — aims to understand why some people achieve protection against Hepatitis B after a single vaccine shot, while others require up to three immunizations to acquire full immunity. Understanding why the immune system responds differently in individuals can help researchers improve existing vaccines and potentially lead to one-shot vaccines that provide long-term immunity for all populations. Researchers in this study are analyzing genes belonging to the innate-immune system — a general immune system response, not one tailored to specific threats — and observing that activation of these genes in certain immune cells can predict who will be a responder after a single shot of the Hepatitis B vaccine. Preliminary results of the Immunity to Hepatitis B Vaccine study were delivered in two separate sessions at the congress. One was given by Manish Sadarangani, director of the Vaccine Evaluation Center of the University of British Columbia and BC Children's Hospital Research Institute, and the by and Richard Scheuermann, director of the J. Craig Venter Institute in La Jolla, California. "These preliminary data points toward strategies to understand why some people respond better to vaccines than others," Sadarangani said. "Using single cell analyses, we now have the opportunity to probe vaccine-induced responses more effectively, to not only learn what happens immediately after vaccination, but to monitor responses over time and utilize machine learning to eventually predict the human immune response to vaccines," added Scheuermann. Wayne C. Koff, president and chief executive officer of the Human Vaccines Project, emphasized that researchers are optimistic with the results obtained so far, as they "provide important insights into the scale and complexity of the human immune system and how vaccines confer protective immunity." "With our network of academic and corporate partners, we aim to build on these findings and decode the human immune system, giving the world the tools required to advance the development of future vaccines and therapies to defeat major global diseases," Koff concluded.  

Sweden's Active Biotech said its experimental therapy Laquinimod failed to meet the primary and secondary objectives of Phase 2 clinical trial evaluating the drug's potential to treat primary progressive multiple sclerosis. Laquinimod, also known as Nerventra or ABR-215062, was developed by Active Biotech and Israel's Teva Pharmaceutical Industries. The drug targets inflammation and degeneration in neurological tissue. Preclinical studies using animal models of multiple sclerosis showed that laquinimod regulated inflammatory and immune responses in these animals, reducing disease progression. The ARPEGGIO Phase 2 study aimed to evaluate laquinimod's efficacy, safety and tolerability in PPMS patients. Its primary endpoint was brain atrophy as defined by percent brain volume change. Secondary goals included time to disability progression, change in timed 25-foot walk, and number of new T2 lesions. The multicenter, randomized, double-blind, placebo-controlled trial enrolled 374 individuals. Initially, the study aimed to evaluate two doses of laquinimod — 0.6 and 1.5 mg/day — in PPMS compared to placebo. However, the highest dose was discontinued in January 2016 after some participants reported adverse cardiovascular events. In a Dec. 1 press release, Active Biotech said the lower dose of laquinimod failed to slow both the rate of brain atrophy and disease progression. “There was, however, a reduction in new T2 lesions observed in patients treated with laquinimod 0.6 mg,” said the company's president and CEO, Helén Tuvesson. The trial revealed a similar safety profile to that observed in previous studies in relapsing-remitting MS patients (RRMS). The most common adverse reactions were headache, nasopharyngities, upper respiratory tract infection,and back pain. Results of the ARPEGGIO trial will likely be presented at a future scientific conference and published in a scientific journal. Earlier this year, Active Biotec stopped developing laquinimod as a potential RRMS treatment after a Phase 3 study failed to achieve its primary goal: slowing disease progression. Laquinimod is also being evaluated as a potential therapy for Huntington’s disease in a Phase 2 clinical trial.

A blood test may someday replace some of the magnetic resonance imaging (MRI) scans taken by people with multiple sclerosis (MS)  — offering an easy, cheap alternative for monitoring disease activity. A study by Norway’s University of Bergen found that blood levels of a factor called neurofilament light chain, released…

Researchers at the MRC Centre for Regenerative Medicine, University of Edinburgh, have discovered a mechanism that accelerates reprogramming of cells into any other cell type. The finding may help boost drug discovery and cellular therapies for several diseases, including multiple sclerosis (MS). The study reporting the findings, “…

The Mayo Clinic has developed a test that allows doctors to distinguish other inflammatory demyelinating diseases from multiple sclerosis in the early stages of a disorder. The test, the first of its kind in the United States, looks for an antibody against a protein known as myelin oligodendrocyte glycoprotein…

Multiple sclerosis patients who adhere strictly to their medication pay more but stay healthier in the long run than those who don't, a study found. Researchers at Liberty University College of Osteopathic Medicine in Lynchburg, Virginia, analyzed data from 2004 to 2013, including electronic health records, insurance claims and self-reported medication adherence. They based their assessment of health outcomes on inpatient admission, emergency room visits, outpatient appointments  and healthcare costs. In total, 681 participants answered questionnaires about medication adherence and disease outcomes, including the Multiple Sclerosis Impact Scale and the Kurtzke Expanded Disability Status Scale. Also used was the Treatment Satisfaction Questionnaire for Medication to assess satisfaction with the medication taken. Patients who took their medicines most rigorously reported 14 percent less severe physical impact of MS, and 17 percent less severe psychological impact than those with low adherence. These patients also reported a 12 percent decrease in disability level, and believed their treatment plan was 7 percent more effective. However, the total overall costs were higher for patients who adhered to their doctor's orders. The researchers said it's more difficult to detect improvements in health outcomes for MS than for other chronic illnesses. This is partly because the only test for changes in disease status is brain imaging, which is expensive and not done routinely. Furthermore, brain imaging only detects new lesions following a relapse, which cannot be compared to previous or future imaging in a quantifiable way. In fact, no simple tests exist for measuring disease severity in MS as there are in other chronic diseases, making it difficult to determine whether treatment benefits justify their cost.

Immune cells that destroy myelin in multiple sclerosis (MS) access the brain and spinal cord via two different routes, a new mouse study shows. This suggests that therapies which target these entry routes may shield the brains of MS patients from further damage. The study, “Caveolin1 Is Required for…

A diet rich in vegetables and low in protein reduced inflammation in multiple sclerosis (MS) patients by modulating the gut microbiome and promoting bacteria that helps control a hyper-reactive immune system. The study reporting the findings, “Immunological and Clinical Effect of Diet Modulation of the Gut…

So-called silent brain lesions in patients with early-stage relapsing-remitting multiple sclerosis (RRMS) may, in fact, not be silent at all, according to a French study that linked such lesions to cognitive decline in early MS. This link has likely been missed since the major tool for measuring disability in MS…

Smoking changes a DNA-based mechanism that influences multiple sclerosis patients’ gene activity, a Swedish study confirms. Another finding was that MS appears to aggravate the harmful effects of smoking. The study dealt with DNA methylation, the process by which the body adds methyl groups to a DNA molecule. Methylation can change…

Exposure to certain gut bacteria at a young age may cause multiple sclerosis (MS) and fuel its progression, a new mouse study shows. The study, “Gut dysbiosis breaks immunological tolerance toward the central nervous system during young adulthood,” appeared in the journal Proceedings of the National…

An estimated 947,000 people in the U.S. have multiple sclerosis (MS) — more than double the long-accepted figure of 400,000 — according to a newly completed study organized and funded by the National Multiple Sclerosis Society (NMSS). “This is definitely not what we expected,”  Nicholas G. LaRocca, vice…

Available long-term data on Fampyra (fampridine; 4-aminopyridine) suggest the treatment may improve walking speed in patients with multiple sclerosis (MS) for up to one year, but more research is needed, a French study reports. The study “Multiple Sclerosis and Clinical Gait Analysis before and after Fampridine: A Systematic Review”…

A pregnancy hormone called estriol may be effective in controlling relapses in women with multiple sclerosis (MS), says a researcher at the University of California, Los Angeles (UCLA). In clinical trials, estriol has also lowered fatigue and improved thinking — work that originated in Rhonda Voskuhl’s quest to understand…

A physiotherapist-supported exercise program using Nintendo Wii may be a feasible and cost-effective way of helping  people with multiple sclerosis (MS) be more physically active, researchers reported after performing a small pilot study. While findings showed some evidence that people improved — both in terms of self-reported health, gait and balance measurements — researchers underscored that more data needs to be gathered on the intervention’s effectiveness, as the study mainly intended to determine if such a program was feasible. Researchers at the Bournemouth University and Poole Hospital NHS Foundation Trust, both in the U.K., argued that a physical activity intervention using active gaming at home may overcome the many challenges MS patients face when attempting to be active. Barriers to it could be physical, but psychological factors, such as fear, embarrassment, or lack of confidence, can also prevent patients from attempting to increase their activity levels. Moreover, practical aspects — such as transport and cost — can hinder people from joining interventions. In the report, “Mii-vitaliSe: a pilot randomised controlled trial of a home gaming system (Nintendo Wii) to increase activity levels, vitality and well-being in people with multiple sclerosis,” researchers explained they used data generated in earlier Nintendo Wii studies to design an improved intervention program. Earlier studies showed that behavior change techniques, including motivational interviews and problem solving, would likely improve the impact of an intervention. These early studies also highlighted the importance of considering the functional levels, environment, and preferences of individual patients when prescribing a Wii-based program. The study (ISRCTN49286846), described in the journal BMJ Open, shows that among the 30 people who signed up, only two dropped out because of medical reasons. Patients either received the 12-month intervention, called Mii-vitaliSe, directly or after a six-month waiting period. Those on the waiting list group were given six months of intervention. Patients, who had low levels of physical activity when the study began, were instructed as to the benefits of physical activity and on how to use the Wii. During the personalized intervention, participants had access to regular support from a physiotherapist and were provided with a personal activity workbook, which aided participants in setting goals and monitoring progress, among other things. They were also asked to keep a log to track their activity, which showed an average use of the Wii two times per week, for 27 minutes each day. Results showed that patients who started the intervention immediately tended to report better physical activity levels, and better physical and psychological well-being. They also had numerical improvements in gait and balance. While no severe adverse reactions were seen, participants reported pain and worsening of scar tissue after some exercises, for which they received follow-up advice and care. The team also identified several problems or difficulties, including wrongly completed questionnaires, that will allow them to improve measurements once they launch a larger study. "Our study is the first to report on home-based use of the Wii for people with MS in the UK. Overall, findings from this study are promising and support proceeding to a full-scale trial of effectiveness and cost-effectiveness. We will refine the trial design, aspects of the intervention and finalize outcome measures in the light of our experiences from this pilot study" the researchers wrote.

MMJ BioScience, an affiliate of medical cannabis research company MMJ International Holdings, has hired a principal investigator to lead clinical trials exploring potential therapeutic applications of cannabinoids in progressive multiple sclerosis (MS). Dr. Bianca Weinstock-Guttman, a neurology professor at the State University of New York at Buffalo, is executive director…

Myelin-producing Brain Cells Regenerated Using Stem Cells in Early Study We know that when the myelin coating of our nerve axons is destroyed, MS symptoms result. So a process that halts or reverses that destruction is the goal of a lot of MS research. This is a…

Sanofi Genzyme and Principia Biopharma have entered into a license agreement to advance the clinical development of PRN2246, an oral drug candidate for the treatment of multiple sclerosis and other diseases of the central nervous system. PRN2246 is an inhibitor of the Bruton’s tyrosine kinase, an enzyme encoded by the BTK gene that plays a crucial role in B-cell development and the B-cell signaling pathway. B-cells are known to be involved in the development of autoimmune diseases that affect the nervous system, including multiple sclerosis. PRN2246 is an orally available therapy designed to easily access the central nervous system (brain and spinal cord) by crossing the blood-brain barrier, and impact the signaling of immune cells and brain cells involved in autoimmunity and inflammatory processes. The drug is designed to safely and effectively modulate B-cell function without depleting these cells. A Phase 1 clinical trial is now testing the drug's safety in healthy volunteers. Under the agreement, which is expected to close shortly, Principia will grant Sanofi an exclusive, worldwide license to develop and commercialize PRN2246. Principia, in return, will receive $40 million in upfront payments from Sanofi, and future milestone payments could reach $765 million. Principia will retain the option to co-fund the treatment's Phase 3 development in exchange for other royalties in the United States. Principia has developed a novel way to design and develop better and safer therapies based on oral small molecules. The company uses its proprietary Tailored Covalency technology to develop its drug candidates, which are, according to the company's website, safer, and more selective, potent and durable than other available treatments. The terms of this licensing agreement are still subject to customary regulatory approval.

Longevity Biotech has received a $316,384 grant from the National MS Society to see if LBT-3627, the nerve cell-protecting therapy it has tested in Parkinson’s, can work in multiple sclerosis as well. The company designed the therapy to protect and repair damaged nerve cells and restore balance to the out-of-whack immune response associated…

The CXCR7 receptor present on mature monocytes — a type of white blood cell — may be a therapeutic target to alleviate the inflammation seen in multiple sclerosis (MS) and similar disorders, a new study shows. The study, “Frontline Science: CXCR7 mediates CD14+CD16+ monocyte transmigration across the blood…

Have you ever thought about stopping whatever MS treatment you’re using? I have. So has John Corboy. Corboy’s not an MS patient. Rather, he’s a researcher at the University of Colorado’s medical school. And he’s studying whether older patients, if they haven’t had a relapse for several…

A blood-clotting protein called fibrinogen prevents myelin production and blocks the neuron remyelination repair process in mice, a study finds. The study, “Fibrinogen Activates BMP Signaling in Oligodendrocyte Progenitor Cells and Inhibits Remyelination after Vascular Damage,” appeared in the journal Neuron. Its conclusions offer new insights and…

In the future, a blood test may make diagnosing multiple sclerosis (MS) much easier, thanks to newly identified biomarker patterns that distinguish between MS patients and healthy people. The test could also correctly detect primary progressive MS (PPMS) in patients who also had relapsing-remitting disease (RRMS). Australian researchers suggest that…

#MSParis2017 – Trial to See if Disease-modifying Therapies Not Necessary in Older MS Patients This tops my list this week because, at age 69, I certainly fit the definition of an “older” MS patient. The study is hoping to enroll 300 MS patients in the U.S. who…

The National Multiple Sclerosis Society (NMSS) has officially announced its collaboration with Corrona on the launch of the Corrona Multiple Sclerosis Registry to compare the safety and effectiveness of approved therapies in multiple sclerosis (MS). Corrona, based in Cambridge, Massachusetts, conducts observational cohort studies, offering analytic expertise…

The generation of a thin myelin sheath during remyelination — one that continues to protect nerve cells over time — is indicative of the long-term health and activity of the central nervous system (CNS) in demyelinating diseases such as multiple sclerosis (MS), a new study shows. These findings, which aim…

Research teams from Canada, Portugal and the United States, each with projects focused on predicting and defining characteristics of multiple sclerosis (MS) , will share this year’s 1 million euro ($1,165,700) Grant for Multiple Sclerosis Innovation (GMSI), announced by Merck at the 7th Joint ECTRIMS-ACTRIMS meeting in Paris, France,…

RedHill Biopharma has received a Notice of Allowance for a new patent on RHB-104 its potential therapy for patients with relapsing-remitting multiple sclerosis (RRMS). Once granted by the United States Patent and Trademark Office (USPTO), this patent will be valid until 2032. RHB-104 is a proprietary, orally-administered antibiotic combination with potentially potent intracellular, antimycobacterial…

Researchers, using two different kinds of stem cells in rats, were able to regenerate oligodendrocytes — myelin-producing brain cells that are defective in multiple sclerosis (MS). They were also able to grow adult neural stem cells in laboratory cultures and prod them to develop into oligodendrocytes. The exact cause of MS is unknown — including what triggers attacks on myelin — but the loss of oligodendrocytes seen in the disease is known to play a role in its progression. Nerve cells in the brain send their signals through their axons, long arm-like structures that extend out from the centers of the nerve cells. The signals are electrical pulses transmitted along the length of an axon. Oligodendrocytes provide the insulation — called myelin — that wraps around axons, speeding up the transmission of electrical signals through the nerve cells. Loss or malfunction of oligodendrocytes means that signaling in the brain is impaired. It is this slowing of signaling that is thought to cause MS symptoms. Researchers from the Heinrich-Heine-University, Germany, with support from British and Chilean colleagues, designed a novel approach to regenerate oligodendrocytes, according to a press release. Stem cells are immature cells that give rise to differentiated cells — cells with a specific function, such as oligodendrocytes. Adult neural stem cells can divide and produce nerve cells and other brain cells, including oligodendrocytes. However, in normal circumstances, the regeneration of cells that take place in the human brain is not enough to repair the damage seen in MS. The researchers set out to find conditions that would promote the differentiation of adult human NSCs into oligodendrocytes. They discovered that another type of stem cell, mesenchymal stem cells (MSCs), could provide the signals required. First they tested their system in rats, and found that by using factors produced by human MSCs, they could induce the growth of new oligodendrocytes in the animals. Then they grew adult NSCs in the laboratory, and using the same factors from human MSCs were able to promote the establishment of oligodendrocytes in the cultured cells.

A giant leap in research and interest in progressive multiple sclerosis — from a few people pushing for such work to 2,000 listening to updates on it — a successful first trial in children, and a growing body of potentially safer treatments for relapsing MS were among the highlights of…