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Why Janssen’s nipocalimab could represent a ‘pipeline in a pathway’

By Brian Buntz | May 2, 2022

JanssenAt the heart of Johnson & Johnson’s (NYSE:JNJ) $6.5 billion acquisition of Momenta Pharmaceuticals in 2020 is a portfolio of drug candidates for immune-mediated diseases.

One of the promising compounds in the acquisition is nipocalimab, which Janssen sees as a potential “pipeline in a pathway.” Nipocalimab holds promise for an array of diseases, ranging from rheumatoid arthritis and lupus and rare diseases such as myasthenia gravis. In all, Janssen is testing the drug in ten rare diseases as well as in rheumatoid arthritis and systemic lupus erythematosus.

When taken as a whole, rare diseases are not altogether rare, said Dr. Neely Mozaffarian, VP and autoantibody pathway area leader at Janssen Immunology.

Dr. Neely Mozaffarian

Dr. Neely Mozaffarian

According to an analysis in the European Journal of Human Genetics, anywhere from 3.5% to 5.9% of the world’s population suffers from a rare disease, affecting 263–446 million people globally.

Rare autoantibody-mediated diseases alone likely affect more than 2% of the population worldwide, Mozaffarian estimated, referring to immune-system-produced antibodies that can cause pathological damage to the body’s tissues or organs.

“We’ve known for decades about autoantibodies,” Mozaffarian said. “Normally, your immune system makes antibodies to protect you against pathogens like bacteria and viruses. But sometimes the immune system makes antibodies — autoantibodies — that bind to your own tissues and can cause disease.”

One of the reasons Janssen is upbeat about nipocalimab is its potential to treat various conditions, including autoantibody-mediated rare diseases, including myasthenia gravis, hemolytic disease of the fetus and newborn and warm autoimmune hemolytic anemia.

“Nipocalimab is a very elegant molecule,” Mozaffarian said. “The body has a very natural mechanism for recycling and removing antibodies from your bloodstream. Nipocalimab takes advantage of this natural recycling system.”

The compound binds to a recycling protein known as FcRn. “FcRn normally takes IgG antibodies in your bloodstream, protects them and puts them back into the bloodstream to last longer,” Mozaffarian said. “But nipocalimab binds to FcRn and prevents it from recycling these antibodies, and so the IgG in the bloodstream gets taken up and degraded.”

Hong Sun, M.D., Ph.D.

Dr. Hong Sun

“Nipocalimab is really fit for purpose,” said Dr. Hong Sun, senior director, global compound development team leader, neuroscience at Janssen. The drug candidate is precise in its mechanism of action — whether the condition in question is immunological or an autoimmune disease. Nipocalimab could offer promise across a spectrum of conditions where a pathogenic autoantibody is involved.

Sun is involved in testing the potential of nipocalimab in myasthenia gravis, which causes weakness and fatigue of muscles that can make breathing and swallowing difficult. Unfortunately, diagnosis is challenging and few treatments are available to treat the disease.

“We know that the disease is caused by the pathogenic autoantibody immunoglobulin G (IgG),” Sun said. “So nipocalimab can remove that IgG without interfering with cellular immunity or other antibodies such as IgM or IgA, which are important immune protectors,” she added.

Compared to traditional treatments, which tend to be more broadly immunosuppressant, nipocalimab potentially offers a much more selective approach.

“It is still an investigational therapy, but we have seen in clinical trials that it does very nicely reduce the amount of IgG in the patients’ bloodstream, including those autoantibodies that cause disease are also reduced in the presence of nipocalimab,” Mozaffarian said.


Filed Under: Biologics, clinical trials, Drug Discovery, Neurological Disease, Obstetrics & gynecology, Women in Pharma and Biotech
Tagged With: Johnson & Johnson, Myasthenia Gravis, nipocalimab, pipeline in a pathway
 

About The Author

Brian Buntz

As the pharma and biotech editor at WTWH Media, Brian has almost two decades of experience in B2B media, with a focus on healthcare and technology. While he has long maintained a keen interest in AI, more recently Brian has made making data analysis a central focus, and is exploring tools ranging from NLP and clustering to predictive analytics.

Throughout his 18-year tenure, Brian has covered an array of life science topics, including clinical trials, medical devices, and drug discovery and development. Prior to WTWH, he held the title of content director at Informa, where he focused on topics such as connected devices, cybersecurity, AI and Industry 4.0. A dedicated decade at UBM saw Brian providing in-depth coverage of the medical device sector. Engage with Brian on LinkedIn or drop him an email at bbuntz@wtwhmedia.com.

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