68Ga-FAPI-46 PET for Giant Cell Arteritis-Polymyalgia Rheumatica Spectrum Disease
This research study is investigating a new way to diagnose conditions that involve inflammation, specifically Giant Cell Arteritis and Polymyalgia Rheumatica. These conditions can cause pain and stiffness, especially in older adults. The study uses a special type of body scan called a PET/CT scan, along with a tracing substance known as 68Ga-FAPI-46. The main goal is to find out how accurately this new scan can identify these inflammatory conditions compared to current methods. Researchers will also check if the scan results change after patients have been on standard treatments for 28 days and again after 6 months, to see how the inflammation responds to medication. This could lead to better and earlier diagnosis for many patients.
At a glance
What is this study about?
This research study is focused on a specific medical area where people experience inflammation, particularly conditions known as Giant Cell Arteritis (GCA) and Polymyalgia Rheumatica (PMR). These are conditions that can cause a lot of pain and stiffness, especially in the neck, shoulders, and hips. GCA can also affect blood vessels, potentially leading to more serious problems if not diagnosed and treated quickly.
The study is using a new approach to diagnose these conditions, involving a special type of scan called a PET/CT scan. For this scan, a very small amount of a tracing substance called 68Ga-FAPI-46 is injected into the body. This tracer is designed to highlight areas where there's inflammation, which can help doctors see what's happening inside the body more clearly. The main idea is to see how good this new scan is at spotting these inflammatory conditions.
Beyond simply diagnosing the conditions, the researchers also want to understand if the scan can show how well treatments are working over time. They will re-scan patients after both 28 days and 6 months of standard treatment to see if the inflammation has reduced. This could be a really helpful tool to make sure patients are on the right treatment plan and that their condition is improving.
Key takeaways
- The study explores a new scan for inflammatory conditions.
- It uses a tracer called 68Ga-FAPI-46 with a PET/CT scan.
- Aims to improve diagnosis of Giant Cell Arteritis and Polymyalgia Rheumatica.
- Will also check how inflammation changes after treatment.
- Requires three scans over about 6 months.
- Open to adults aged 18 and over who suspect they have these conditions.
Who may be eligible?
To be able to take part in this study, you need to be an adult, aged 18 years or older – there's no upper age limit. The study is open to both men and women.
It's important that you have been suspected of having one of the conditions the study is looking at, which are Giant Cell Arteritis or Polymyalgia Rheumatica. The doctors on the study team will carry out checks to make sure you fit all the necessary criteria before you can join.
There might be other health conditions or medications that would prevent someone from taking part, but these will be discussed in detail by the study team if you express an interest. Always speak to your doctor or the study team to find out if this particular study is right for you.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Are you 18 years old or older?
- Have you recently been told by your doctor that you might have Giant Cell Arteritis or Polymyalgia Rheumatica?
- Are you able to attend appointments for medical scans?
- Are you willing to have standard treatments for your condition as part of the study?
What does participation involve?
If you decide to take part in this study, the main activity will involve having a special type of scan called a 68Ga-FAPI-46 PET/CT scan. You will have a small amount of the tracer injected into your body, and then you'll go through the scanner. This scan helps doctors see areas of inflammation.
Initially, you'll have one of these scans to help diagnose your condition. If you are diagnosed with Giant Cell Arteritis or Polymyalgia Rheumatica and start standard treatment, you will then have follow-up scans. The study plans for you to have a second scan after about 28 days (roughly 4 weeks) of treatment, and then a third scan after about 6 months of treatment. These follow-up scans will help the researchers understand how the inflammation changes with treatment. The total duration of your active involvement in the study would be about 6 months, including the initial assessments and the three scans.
Potential risks and benefits
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Common questions
What is 68Ga-FAPI-46?
It's a special tracing substance used with PET/CT scans to light up areas of inflammation in your body.
What are Giant Cell Arteritis and Polymyalgia Rheumatica?
These are conditions that cause inflammation, leading to pain and stiffness, often in the shoulders, neck, and hips.
Will this study cure my condition?
No, this study is about improving diagnosis, not curing the condition. You will still receive standard treatments.
How long does each scan take?
While the exact time can vary, a PET/CT scan and associated procedures usually take an hour or two.
Do I have to pay to join the study?
No, you don't have to pay to take part in the study. All study-related procedures are covered.
How to find out more
Always speak to your GP or specialist before deciding to take part in a study.
Discussion
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