Testing a new injectable medication for arthritis safety and how the body processes it

Plain-English translation of NCT07258849 on ClinicalTrials.gov ↗ · Source last updated June 2026 · Translation generated July 2026 · How we translate trials

Phase 1 — Testing in a small group (usually 20–80 people) to find a safe dose and watch for side effects.

What is this trial?

This study is testing a new medication called to see how safe it is and what side effects it might cause in healthy volunteers and in people with rheumatoid arthritis. Researchers will give the medication by injection under the skin or into a vein, then use blood tests to understand how your body processes this treatment and how it affects you.

Before any new medication can be widely used, it must be carefully tested in humans to make sure it is safe and that people can tolerate it well. This trial is the first step to see if this medication could one day help people with rheumatoid arthritis.

Do you qualify?

You likely qualify if…

you have a healthy weight and body mass index between 18.0 and 32.0 (or up to 40.0 if you have rheumatoid arthritis)
you have been diagnosed with adult-onset rheumatoid arthritis at least 3 months before joining (for the arthritis groups only)
you weigh at least 50 kilograms (about 110 pounds) if you have rheumatoid arthritis
you are willing to receive injections and have blood drawn regularly during the study

You likely don't qualify if…

you have a history of serious heart, lung, liver, kidney, stomach, or nervous system problems that could affect how drugs work in your body
you have Class 4 rheumatoid arthritis (the most severe category) if you have arthritis
you have abnormal heart rhythm or electrical activity on a heart test (ECG)
you currently have an active or recent serious infection
you are pregnant, breastfeeding, or planning to become pregnant during the study

What participation looks like

You will visit the study clinic multiple times over about 33 weeks. Depending on which group you join, you will receive injections of either the medication or a placebo (a dummy treatment with no active ingredient), and have regular blood tests to see how your body processes the treatment. Some participants will receive a single dose, while others will receive multiple doses over time. Throughout the study, researchers will closely monitor you for any side effects and ask you how you're feeling.

AI-generated summary from trial data · Jul 3, 2026 · Not medical advice

Trial locations(10 sites)

United States

Pinnacle Research Group, LLC, Anniston, Alabama

Arizona Research Center, Phoenix, Arizona

Clinical Research of West Florida, Inc. (Clearwater), Clearwater, Florida

GNP Research at Mark Jaffe, MD, Cooper City, Florida

Fortrea Clinical Research Unit, Daytona Beach, Florida