A Phase 1 Study of Repeat PET/CT Imaging in People With CAPS and Anakinra-Induced Amyloidosis Using Amyloid-Reactive Peptide 124I-AT-01 (124I-p5+14, Iodine-124I-Evuzamitide) to Measure Changes in Organ-Specific Amyloid Load
National Institute of Allergy and Infectious Diseases (NIAID)
Summary
Background: Anakinra is a drug used to treat people with certain diseases that affect their immune systems. Sometimes anakinra can cause proteins under the skin to clump together. These clumps are called amyloidosis; they can spread to other organs. The only way to diagnose amyloidosis is to remove a piece of tissue (biopsy). Researchers want to find a way to locate amyloidosis in internal organs using positron emission tomography (PET)/computed tomography (CT). Objective: To test a new tracer used during PET/CT scans in people with amyloidosis. A tracer is a radioactive dye injected into the body. Eligibility: Adults aged 18 years or older with amyloidosis from anakinra injections. They must be enrolled in NIH protocol 17-I-0016. Design: Participants will come to the clinic once every 6 months for 2 years. Each visit will be 1 day. They will have a PET/CT scan with the new tracer at each visit: The tracer will be given through a tube attached to a needle inserted into a vein. The PET/CT scanner is a machine shaped like a doughnut. Participants will lie still on a padded table. The table will move in and out of the machine. The scan takes about 1 hour. Radiation from the tracer will remain in the body for 24 hours after each scan. Participants will need to follow rules to avoid exposing pets and other people. Participants will collect a 24-hour urine sample before each visit. They will also have blood tests and a physical exam at each visit. Participants will receive a follow-up phone call about 1 week after each visit.
Description
Study Description: This is a phase 1 study to evaluate the feasibility of an investigational positron emission tomography (PET)/computed tomography (CT) radiotracer, 124I-AT-01, to screen for anakinra-induced amyloidosis in people with the cryopyrin-associated autoinflammatory syndromes (CAPS) (Muckle-Wells syndrome \[MWS\] or neonatal onset multisystem inflammatory disease \[NOMID\]), and to follow resolution of amyloidosis. This radiotracer binds to amyloid, so a PET/CT scan can show the presence and relative magnitude of amyloid. Participants aged 18 years and older who developed local sk…
Eligibility
- Age range
- 18–120 years
- Sex
- All
- Healthy volunteers
- No
* INCLUSION CRITERIA: An individual must meet all the following criteria to be eligible for this study: 1. Aged 18 years and older. 2. Currently enrolled on NIH protocol 17-I-0016 with a documented diagnosis of MWS or NOMID. 3. Agree to allow data collected in this study to be shared with and stored on NIH protocol 17-I-0016 for that study s research analyses. 4. Developed skin thickening at the site of anakinra injection. 5. Participants who can become pregnant or who can impregnate their partner must agree to use 2 highly effective methods of contraception, at least 1 of which must be a ba…
Interventions
- Drug124I AT-01
124I-AT-01 is an amyloid-reactive synthetic 45-L amino acid polypeptide radiolabeled with iodine-124, with a theoretical molecular weight of 4763.6 Da (based on amino acid sequence). The polypeptide, AT-01, is not pharmacologically active. 124I-AT-01 binds many forms of human and murine amyloid and is intended to be a PET imaging agent for the detection of amyloid deposits.
Location
- National Institutes of Health Clinical CenterBethesda, Maryland