Early Use of Methotrexate Slows Rheumatoid Arthritis

By Pat Anson, PNN Editor

Early treatment with methotrexate can significantly reduce joint pain and inflammation in patients showing early signs of rheumatoid arthritis (RA), according to a new study by Dutch researchers.

First used as a chemotherapy treatment because it prevents cancer cells from dividing, methotrexate became a first-line therapy for RA in the 1980’s because it also acts as an immune system inhibitor. RA is a chronic autoimmune disease in which the body’s own defenses attack joint tissues, causing pain, swelling, inflammation and bone erosion. 

Treatment with methotrexate usually isn’t initiated until RA is diagnosed, but researchers at Leiden University Medical Centre (LUMC) in the Netherlands found that early treatment of patients in the "pre-rheumatic phase" helped slow progression of the disease.

"At present, methotrexate is only prescribed to the patient following a rheumatoid arthritis diagnosis," said lead author Annette van der Helm, PhD, Professor of Rheumatology at LUMC. "But that is too late. By then, the disease is already considered chronic."

Van der Helm and her colleagues enrolled 236 patients who had joint pain and inflammation that could be seen on an MRI. Although RA was suspected, it was not yet confirmed. Half the patients were treated with methotrexate and the other half with a placebo. The effects of the treatments were assessed a year later.

The study findings, published in The Lancet, show that early treatment with methotrexate did not prevent the development of RA, but the diagnosis was delayed. Patients in the methotrexate group also had less pain and morning stiffness than those treated with a placebo. Their physical function was also better and their MRI scans showed less joint inflammation.

"This is an important step towards reducing disease burden for this group of patients," says Van der Helm. "This chronic disease is extremely burdensome to patients and their families. Our study is paving the way toward arthritis prevention."

In 2019, over a million people were prescribed methotrexate in the United States, where it is approved as a treatment for RA, psoriasis and cancer. The drug is also used “off-label” for lupus, migraine, multiple sclerosis, Crohn’s Disease and other autoimmune problems.   

‘Abortion-Inducing Drug’

Ironically, the Dutch study comes at a time when some female patients in the U.S. are losing access to methotrexate because the drug can cause miscarriages and be used to end ectopic pregnancies. After last month’s Supreme Court ruling that overturned Roe vs. Wade, over half the states enacted or implemented abortion limits, including some that specifically list methotrexate as an “abortion-inducing drug.”  

Although the state laws don’t prohibit methotrexate from being used for other purposes, some doctors, pharmacies and insurers have become cautious about prescribing or dispensing the drug. The Arthritis Foundation has heard from several women who’ve had trouble getting methotrexate, including some beyond childbearing age.

“Some of the stories we’ve gotten in are of women who are over the age of 50 — they are past their reproductive years — and they’re still being asked really invasive questions and having roadblocks thrown up,” Dr. Anna Hyde of the Arthritis Foundation told NBC4 in Washington.

Up to 90% of RA patients are prescribed methotrexate at some point. It doesn’t work for everyone and can have side effects, but it’s the only affordable option for many patients, costing about $50 for a month’s supply of generic methotrexate tablets. Other treatments for RA, such as disease modifying biologic drugs, can cost as much as $3,000 a month and are not covered by insurance.