Arthritis drug could be used to treat blood cancer sufferers

  • Anti-inflammatory drug is one thousandth of the cost of the current drug which works in the same way
  • Discovery may open up cost effective treatment options not just for the NHS but also cancer patients across the world

Scientists at the University of Sheffield have discovered that a common drug given to arthritis sufferers could also help to treat patients with blood cancers.

mpnMyeloproliferative neoplasms (MPN) are diagnosed in around 3,300 UK patients every year and cause an overproduction of blood cells creating a significant impact on quality-of-life, with symptoms such as night sweats, itching and tiredness.

MPNs are most often diagnosed in people in their 50s and 60s and currently treatment is limited to aspirin, removal of excess blood and mild chemotherapy. Recently, the drug Ruxolitinib has been developed and has been shown to provide relief, but at a cost of over £40,000 per year per patient, it has not been approved by the National Institute for Health and Care Excellence (NICE).

Dr Martin Zeidler from the University’s Department of Biomedical Science, working together with colleagues from the Department of Haematology at the Royal Hallamshire Hospital, and funded by Cancer Research UK have discovered that Methotrexate (MTX) can work in the same way.

He said: “Given that a year’s course of low-dose MTX costs around £30, the potential to repurpose MTX could provide thousands of patients with a much needed treatment option and also generate substantial savings for health care systems.

“Because MTX is a World Health Organisation ‘Essential Medicine’, this also means that this well understood drug could be used throughout the developing world.”

In this study scientists used cells from the fruit fly Drosophila to screen for small molecules that suppress the signalling pathway central to the development of MPNs in humans. Further testing confirmed this in human cells, even those carrying the mutated gene responsible for MPNs in patients.

MTX is commonly used at low doses to treat inflammatory diseases including rheumatoid arthritis, Crohn’s disease and psoriasis and has few side effects. It is also used in some cancers at much higher doses where the side effects are substantial and similar to other chemotherapy agents.

Working together with clinical colleagues at the Royal Hallamshire Hospital, Dr Zeidler is now looking to undertake clinical trials to examine the possibility of repurposing low-dose MTX for the treatment of MPNs.

“We have the potential to revolutionise the treatment of this group of chronic diseases – a breakthrough that may ultimately represent a new treatment option able to bring relief to both patients and health funders,” he added.

Nell Barrie, senior science information manager at Cancer Research UK, said: “Finding new uses for existing drugs is a great way to speed up improvements in treatment, as these drugs will have previously been through safety tests.

Methotrexate is already used as a chemotherapy drug for several types of cancer, and this early research shows that at much lower doses it could have the potential to help treat certain blood disorders.”

Additional information

The paper Methotrexate is a JAK/STAT pathway inhibitor is published in PLOS One.
The research was supported by a Cancer Research UK Senior Cancer Research Fellowship to Martin Zeidler and a joint Cancer Research UK/Yorkshire Cancer Research PhD fellowship awarded via the Sheffield Cancer Centre.

The University of Sheffield
With almost 26,000 of the brightest students from around 120 countries, learning alongside over 1,200 of the best academics from across the globe, the University of Sheffield is one of the world’s leading universities.
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Unified by the power of discovery and understanding, staff and students at the university are committed to finding new ways to transform the world we live in.
In 2014 it was voted number one university in the UK for Student Satisfaction by Times Higher Education and in the last decade has won four Queen’s Anniversary Prizes in recognition of the outstanding contribution to the United Kingdom’s intellectual, economic, cultural and social life.
Sheffield has five Nobel Prize winners among former staff and students and its alumni go on to hold positions of great responsibility and influence all over the world, making significant contributions in their chosen fields.
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For further information, please visit www.sheffield.ac.uk

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Contact

For further information please contact:
Clare Parkin
Media Relations Officer
University of Sheffield
0114 222 9851
clare.parkin@sheffield.ac.uk