This clinical trial is focused on studying Rheumatoid Arthritis, a condition that causes inflammation in the joints, leading to pain and stiffness. The study will use a special imaging technique called [18F]PEG-folate PET-CT to monitor how patients with this condition respond to a type of treatment known as anti-TNF therapy. Anti-TNF therapy involves medications that help reduce inflammation by blocking a protein called tumor necrosis factor (TNF) in the body.
The purpose of the study is to see if changes in the PET-CT images after four weeks of treatment can predict how well patients will respond to the therapy after 26 weeks. The study will also look at changes in the joint tissue to understand more about how the treatment works, especially focusing on certain cells called macrophages and a protein known as FRβ.
Participants in the study will receive the [18F]Fluor-PEG-Folate solution through an intravenous infusion, which means it will be injected into a vein. The study will follow patients over a period of time to observe the effects of the treatment and the changes in their condition. Some participants may receive a placebo, which is a substance with no active medication, to compare the results. The study aims to provide valuable insights into the effectiveness of anti-TNF therapy for people with rheumatoid arthritis.



The Netherlands