Clinical Report: FDA approves first therapy for warm autoimmune hemolytic anemia

Overview

The FDA has approved nipocalimab-aahu (IMAAVY) as the first therapy for warm autoimmune hemolytic anemia (wAIHA) in patients aged 12 and older. This approval is based on the results of the phase 2/3 ENERGY trial, which demonstrated efficacy in improving hemoglobin levels compared to placebo.

Background

Warm autoimmune hemolytic anemia (wAIHA) is characterized by the destruction of red blood cells due to autoantibodies, leading to anemia and increased risk of complications.

Data Highlights

Key Findings

• Nipocalimab-aahu is the first FDA-approved therapy specifically for wAIHA.
• The approval was based on the phase 2/3 ENERGY trial involving 115 adults.
• Participants receiving nipocalimab had a significantly higher durable hemoglobin response compared to placebo.
• Mean hemoglobin levels increased by 1 g/dL at week 1 for the 30 mg/kg dose group.
• Common adverse reactions included peripheral edema, diarrhea, and fever.

Clinical Implications

Clinicians should be aware of the potential adverse effects and monitor patients accordingly.

Conclusion

The approval of nipocalimab represents a milestone in the management of warm autoimmune hemolytic anemia.

Related Resources & Content

1. Johnson & Johnson, Investor News, 2026 -- FDA approves IMAAVY® (nipocalimab-aahu) as first-ever treatment for warm autoimmune hemolytic anemia (wAIHA)
2. Johnson & Johnson, JNJ Medical Connect, 2026 -- Nipocalimab for warm autoimmune hemolytic anemia: results from the phase 2/3 randomized trial
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7. FDA approves IMAAVY® (nipocalimab-aahu) as first-ever treatment for warm autoimmune hemolytic anemia (wAIHA), representing a landmark advancement for patients | Johnson & Johnson
8. https://www.jnjmedicalconnect.com/media/attestation/congresses/immunology/2026/eha/nipocalimab-for-warm-autoimmune-hemolytic-anemia-results-from-the-phase-23-rando.pdf
9. Diagnosis and treatment of autoimmune hemolytic anemia in adults: Recommendations from the First International Consensus Meeting - PubMed