08:35pm Sunday 24 June 2018

Research challenges use of off-label drug to treat osteoarthritis

An off-label drug prescribed to treat osteoarthritis of the hand when conventional medication has failed is ineffective, according to a study involving researchers from the University of York.

The HERO Trial (Hydroxychloroquine Effectiveness in Reducing Symptoms of Hand Osteoarthritis Trial) shows there was no benefit in taking hydroxychloroquine to control debilitating pain when compared to a placebo.

The first-line treatment for hand osteoarthritis – paracetamol, non-steroidal anti-inflammatory drugs or opioids – is often not effective and some patients experience adverse reactions. Doctors have used hydroxychloroquine as an off-label alternative when first-line treatments are ineffective.

Authorised

Prescription drugs are licensed for certain conditions: off-label use means doctors are using them to treat illnesses outside of that designated or authorised list.

It is not clear how often doctors use hydroxychloroquine off-label, although it is believed to be a common practice.

The study was hosted at the York Trials Unit (YTU), University of York, working in conjunction with the Chief Investigator, Professor Philip Conaghan, and his team at the Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds. YTU were involved in the design, running and reporting of this study.

The study is published in the journal Annals of Internal Medicine.

Dr Puvan Tharmanathan, from the YTU , said: “This project involved close collaboration between universities in Yorkshire to answer an important question on treatment choices for patients with hand osteoarthritis using rigorous research methods.”

“The finding that hydroxychloroquine is not effective is important both in relation to not exposing patients to additional treatments and further understanding the underlying cause of hand osteoarthritis in the hope of finding new treatments.”

Osteoarthritis of the hand is a painful and disabling condition which tends to affect people as they get older. It can stop people from carrying out everyday activities – and can limit their quality of life.

The HERO Trial, funded by Arthritis Research UK, estimated that up to 31 per cent of people aged over 70 suffer from the condition.

Pain

The study involved 248 patients at 13 NHS hospitals in England: all had the condition for at least 5 years and had changes to the joints in their hands consistent with osteoarthritis.

The participants all reported moderate to severe pain on at least half of the days in the previous three months to the study commencing.

The study found that patients initially reported a small reduction in the severity of pain before the improvement plateaued. However, that change was seen in both the group receiving the medication and the group taking the placebo (i.e. dummy capsule that contained no medicine).

Measurements of grip strength and the structural damage existing in patients’ joints were also similar for both groups.

Figures from Arthritis Research UK show that 8.75 million people over the age of 45 have sought treatment for all types of osteoarthritis. One third have to stop working or reduce their working hours because of the pain of the condition.

According to the charity, hand osteoarthritis is more commonly seen in people whose occupations required increased manual dexterity.

Limiting

Dr Natalie Carter, head of research liaison and evaluation at Arthritis Research UK, said: “While this drug is known to be effective for some forms of inflammatory arthritis, such as rheumatoid arthritis, this study does not back up its use for hand osteoarthritis.

“Hand osteoarthritis can have a huge impact on a person’s life, limiting their ability to live independently and carry out everyday tasks such as dress, wash and cook for themselves.

“It is vital that we invest in research to improve the treatment options available to people with this condition. Anyone concerned about the effectiveness of their treatment should seek advice from their doctor.”

 

University of York 

 


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