abatacept vs pegloticase
Side-by-side comparison of abatacept and pegloticase Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Orencia
Krystexxa
Orencia is a medicine that helps to reduce inflammation. It is used to treat rheumatoid arthritis, juvenile idiopathic arthritis, and psoriatic arthritis.
Krystexxa is a medicine used to treat chronic gout in adults when other treatments don't work well enough. It helps lower uric acid levels in your blood.
Orencia treats rheumatoid arthritis in adults. It also treats polyarticular juvenile idiopathic arthritis in patients 2 years and older. Orencia can also treat active psoriatic arthritis in patients 2 years and older. Finally, it can prevent acute graft versus host disease after a stem cell transplant.
Krystexxa is used to treat chronic gout in adults. This is for people whose gout is not well controlled with other medicines. It helps lower uric acid levels in your blood to reduce gout symptoms.
Orencia works by blocking the activity of certain immune cells called T cells. These T cells can cause inflammation and damage to your joints and other tissues. By blocking T cell activity, Orencia can help reduce inflammation and relieve your symptoms.
Krystexxa contains an enzyme that breaks down uric acid in your body. This helps to lower the amount of uric acid in your blood. Lowering uric acid can reduce gout symptoms.
- • Headache
- • Upper respiratory tract infection (like a cold)
- • Runny nose
- • Nausea
- • Gout flares
- • Nausea
- • Infusion reactions
- • Joint pain
- • COVID-19
- The medicine is not working 38,612
- Rheumatoid arthritis 23,596
- Pain 21,295
- Joint pain 20,151
- Swollen joint 19,709
- Gout flare 539
- Increased uric acid in blood 378
- Reaction to the infusion 358
- Treatment not working as well 240
- Difficulty breathing 166
Using Orencia with a TNF antagonist or other biologic medicines can raise your risk of serious infections. Tell your doctor if you have any signs of infection, such as fever, cough, or sore throat. Orencia can also cause allergic reactions, including anaphylaxis. Get medical help right away if you have trouble breathing, swelling, or hives.
Krystexxa can cause serious allergic reactions, including anaphylaxis, during or after the infusion. You should receive Krystexxa in a healthcare setting where anaphylaxis can be treated. If you have G6PD deficiency, you should not take Krystexxa, as it can cause red blood cell problems.
There is not enough information about Orencia use in pregnant women to know if it is safe. Talk to your doctor if you are pregnant, plan to become pregnant, or are breastfeeding.
It is not known if Krystexxa can harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if Krystexxa passes into breast milk, so it should not be used when breastfeeding unless the benefit outweighs the risk.
How to Read This abatacept vs pegloticase Comparison
abatacept is classified in the T-Cell Co-Stimulation Modulator drug class, while pegloticase sits within the Recombinant Uricase class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, abatacept has 123,363 submissions while pegloticase has 1,681. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between abatacept and pegloticase — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.