Research
New drug could treat dyskinesia in Parkinson’s disease

Early trial results give hope for a new potential dyskinesia treatment for people with Parkinson’s disease.
A new clinical trial, carried out by Neurolixis and made possible by co-funding from the Parkinson’s Virtual Biotech and The Michael J Fox Foundation for Parkinson’s Research (MJFF), shows that the drug NLX-112 is safe and effective in reducing dyskinesia in patients with Parkinson’s disease.
Over the last five years, the Parkinson’s Virtual Biotech has provided US based biotech company, Neurolixis, with a total of £1.57 million in funding to support the progress of NLX-112 through preclinical research and clinical trials.
Neurolixis has been researching the effect of the drug NLX-112 on dyskinesia, a common side effect experienced by people with Parkinson’s who have been taking levodopa-based medications for several years.
It causes involuntary movements that can affect various parts of the body, making everyday tasks impossible. The main medication available to manage dyskinesia is amantadine, which can have side effects and does not work for everyone.
NLX-112 works by targeting serotonin cells inside the brain which are believed to contribute to the development of dyskinesia, by releasing dopamine in an erratic manner. It aims to reduce dyskinesia by decreasing the amount of dopamine the cells release.
This latest phase 2a study firstly looked at how safe and well tolerated NLX-112 was in people with Parkinson’s and also how well NLX-112 improved their dyskinesia symptoms. Of the 22 participants with levodopa-induced dyskinesia who completed the treatment process, 15 participants received NLX-112 and seven participants received a placebo.
Participants either received NLX-112 or placebo in increasing doses during the initial four weeks, to minimise the potential side effects. After two weeks at the maximum dose, they decreased the dosage over two weeks.
The results achieved the first objective to suggest that NLX-112 was safe and well tolerated in people with Parkinson’s.
The second aim of the study was to show that NLX- 112 was effective in treating dyskinesia. The results suggest participants who received NLX-112 showed significant reduction in their scores for dyskinesia, whereas those who received the placebo did not show significant reduction in their scores.
The side effects of participants who received NLX-112 were mild, confirming previous observations on the compound. Full analysis of efficacy measures is underway and will be disclosed in further announcements.
Professor Per Svenningsson, principal clinical investigator, said: “We are excited about the positive results of this proof-of-concept study. The findings indicate that NLX-112 can be safely administered to people with PD [Parkinson’s disease] and alleviates their troublesome LID. If these findings are confirmed in larger clinical trials, NLX-112 could become a promising new treatment option for this indication.”
The Parkinson’s Virtual Biotech, led by charity Parkinson’s UK in partnership with the Parkinson’s Foundation, fast-tracks the projects with the greatest scientific potential to transform the lives of people with Parkinson’s, focusing on treatments that will meet the most pressing needs identified by the Parkinson’s community.
Dr Arthur Roach, Director of Research at Parkinson’s UK, said: “We’re incredibly proud and excited by these early results from Neurolixis. They were one of the first companies that the Parkinson’s Virtual Biotech invested in, in partnership with The Michael J Fox Foundation, so to see it making positive progress just reiterates why this brave and innovative approach is right for the Parkinson’s community. It really is bringing us closer to new treatments that address the symptoms that the Parkinson’s community have told us are the most urgent and LID is one of those.
“The Parkinson’s Virtual Biotech is a global partnership between Parkinson’s UK, the largest charitable funder of Parkinson’s research in Europe, and the Parkinson’s Foundation, but it is entirely driven by the Parkinson’s community. Further studies will be necessary for regulatory approval and routine clinical use of NLX-112. But now people with Parkinson’s can have hope that a much needed new treatment for LID may be coming to them soon, and know that their support of the Parkinson’s Virtual Biotech has made this possible.”
Dr. Adrian Newman-Tancredi, CEO of Neurolixis, added: “PD is the fastest growing neurodegenerative disease and these results suggest that NLX-112 could help mitigate the medical and societal burden caused by this disease. We are grateful to the Parkinson’s Virtual Biotech and the Michael J Fox Foundation for financially supporting investigation of NLX-112 from preclinical studies through to this clinical trial, and their recognised expertise in the PD field provides a strong validation for the program. These positive findings further support the development of NLX-112 as a potential treatment for LID and other movement disorders with large market potential.”
Research
NHS to review cost effectiveness of new Alzheimer’s drugs

NICE will review whether new Alzheimer’s drugs should be offered on the NHS after an appeal found their wider impact was not fully counted.
An appeal found that the National Institute for Health and Care Excellence had failed to properly account for the wider impact of the treatments, including the heavy burden on unpaid carers, when calculating the cost effectiveness of the medicines.
Both treatments, lecanemab and donanemab, will now return to a NICE committee for further consideration.
“Today’s ruling is an opportunity for NICE to consider the real cost of Alzheimer’s on people and their families, and we welcome the decision to look again at whether new medicines could be provided on the NHS,” said David Thomas, head of policy and public affairs at Alzheimer’s Research UK.
Lecanemab and donanemab do not cure Alzheimer’s, but they slow it by targeting and clearing clumps of amyloid proteins, sticky protein build-ups in the brain linked to the disease.
While the drugs are available privately in the UK for people who can afford them, NICE ruled last year that they were too expensive to be made available on the NHS in England and Wales.
It is estimated informal dementia care costs the economy more than £20bn a year.
Alzheimer’s Research UK wants NICE to update how it assesses the value of new dementia drugs and factor in the huge additional costs this condition places on society and the wider economy.
NICE and its expert committees assess whether new drugs are good value for money for the NHS based on a wide range of evidence.
This includes how treatments perform in clinical trials, the experiences of patients and carers, and the costs of new drugs as well as any changes to NHS services needed to provide access.
When NICE weighs up whether a new Alzheimer’s drug is cost effective for the NHS, it carries out a limited assessment of the impact dementia has on the health of carers.
But the condition takes an enormous toll on families and society because caring for someone with dementia can lead people to become more isolated and give up work.
It can have a major emotional impact and put families under financial strain.
Thomas said: “Research has delivered new treatments with the potential to provide people with valuable extra months of independence, lessening the burden on carers.
“While these treatments offer modest benefits and can cause serious side effects, they provide the foundation for a future where dementia becomes a treatable condition.
“Now we need NICE to look again at how these medicines could benefit both people with early Alzheimer’s and their carers.”
Chris, whose mother Shirley is living with Alzheimer’s disease, said: “The real cost of Alzheimer’s is far greater than many people realise.
“In order to give my mum the care she needed, I moved back home to help my dad as the care was too much for him alone. After my dad passed away from Covid in 2021, I became sole carer for my mum.
“It was a very difficult period, working a full-time job, caring for Mum and dealing with the loss of my dad. Eventually I got some in-home care support to help.
“The family has borne most of the cost of Mum’s care, both in time and fees, and the family home has been sold to finance it.”
“The emotional and financial strain Alzheimer’s has taken on our family is horrendous, and I know many families across the UK are experiencing this pressure.”
He is backing Alzheimer’s Research UK’s call for NICE to change how it evaluates new dementia treatments.
The timeframe for the next NICE meetings to discuss the drugs is still to be set, and it is not certain follow-up hearings would change NICE’s guidance on access to the medicines.
But Alzheimer’s Research UK is continuing to push to make sure dementia is now a main priority for political and NHS decision-makers.
The head of the ongoing independent review into adult social care, Baroness Louise Casey, has called on the government to act, show leadership and prioritise dementia.
She has proposed appointing a dementia tsar to drive forward the prevention, treatment and care of dementia.
Baroness Casey has also argued for more funding for dementia treatment trials.
With more than 130 Alzheimer’s drugs in clinical trials worldwide, the charity says it is vital the NHS runs trials of new treatments now to understand how to deliver them to eligible patients in future.
In addition to changing how NICE assesses new medicines, the health service needs to collect real-world evidence on new dementia drugs and prepare for diagnostic tests and innovative treatments that are coming.
“Alzheimer’s Research UK is calling on the government to give dementia the same political determination that transformed cancer care,” Thomas said.
“We urgently need investment and a clear UK-wide plan so new treatments can be assessed in the NHS and reach the people who stand to benefit.”
Health and social care secretary Wes Streeting has said dementia is “one of the greatest challenges of our time” and pledged that the UK should become a world leader in dementia clinical trials.
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Osteoporosis drugs could reduce dementia risk, study suggests
News
Gut health supplement relieves arthritis pain, research finds

A prebiotic fibre supplement may ease arthritis pain and improve grip strength in people with knee osteoarthritis, a study suggests.
The daily supplement, made from inulin, a dietary fibre found in chicory root, Jerusalem artichokes and other vegetables, also lowered pain sensitivity and saw fewer people drop out than a digital physiotherapy programme tested alongside it.
Dr Afroditi Kouraki, lead author of the study from the University of Nottingham, said: ‘Our findings suggest that targeting gut health with a prebiotic supplement is a safe, well-tolerated, and effective way to reduce pain in people with knee osteoarthritis.
“The very low dropout rate compared to the exercise group is also encouraging from a public health perspective, people were able to fit this supplement easily into their daily lives.’
Osteoarthritis of the knee, a wear-and-tear joint condition, affects hundreds of millions of people worldwide and is a leading cause of pain and disability, particularly in older adults.
Current treatments rely heavily on pain medication, which can cause side effects, or exercise programmes, which many patients find hard to maintain.
The INSPIRE trial, led by researchers at the University of Nottingham, involved 117 adults with knee osteoarthritis and tested four groups: inulin alone, digital physiotherapy-supported exercise alone, a combination of both, and a placebo. Both inulin and physiotherapy independently reduced knee pain.
However, inulin alone improved grip strength and reduced pain sensitivity, measures linked to how the nervous system processes pain, while physiotherapy did not.
The dropout rate for those taking the supplement was just 3.6 per cent, compared with 21 per cent for the physiotherapy group, suggesting a daily supplement may be easier for people to stick with than an exercise programme.
Inulin works as a prebiotic, meaning it feeds beneficial bacteria in the gut.
This leads to the production of compounds called short-chain fatty acids, particularly butyrate, which can affect inflammation and pain pathways throughout the body.
Participants taking inulin also showed increased levels of both butyrate and GLP-1, a gut hormone linked to pain regulation and muscle health.
Higher GLP-1 levels were associated with improved grip strength, pointing to a possible gut-muscle connection.
Senior author Professor Ana Valdes added: ‘The link we observed between GLP-1 and grip strength is particularly intriguing and points to a broader gut-muscle-pain axis that warrants further investigation. This could have implications not just for osteoarthritis, but for understanding how gut health influences ageing and physical resilience more broadly.’
Professor Lucy Donaldson, director of research at Arthritis UK, said: “The pain of arthritis can severely impact quality of life. Our recent lived experience survey showed that six in ten people are living in pain most or all of the time due to their arthritis.
“Researchers are starting to explore the role of the gut microbiome in our experience of pain.
“This exciting preliminary research highlights how diet and physiotherapy can act in different ways to have benefits for people with arthritis.
“We know a variety and balance of healthy foods, including fibre, and regular physical activity matter, and we’re glad to be supporting research that explores how they work to help people with arthritis.”













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