EMA Backs Orphan Drug Status for Soligenix’s SGX945 in Behçet's Disease

EMA Backs Orphan Drug Status for Soligenix’s SGX945 in Behçet's Disease
EMA Backs Orphan Drug Status for Soligenix’s SGX945 in Behçet's Disease
Regulatory News / Rare Diseases | Princeton, N.J. | Feb 26, 2026

Soligenix Receives Positive Opinion from the European Medicines Agency on the Request for Orphan Drug Designation for SGX945 for the Treatment of Behçet's Disease

Regulatory Snapshot
Company Soligenix, Inc.
Drug Candidate SGX945 (dusquetide)
Indication Behçet's Disease
Regulatory Action EMA COMP Positive Opinion (Orphan Drug)

PRINCETON, N.J., Feb. 26, 2026 -- Soligenix, Inc., a late-stage biopharmaceutical company focused on developing and commercializing products to treat rare diseases where there is an unmet medical need, announced today that the European Medicines Agency (EMA) Committee for Orphan Medicinal Products (COMP) provided a positive recommendation on the Company's request for orphan drug designation for dusquetide (the active pharmaceutical ingredient in SGX945) for the treatment of Behçet's Disease, following review of the recently published Phase 2a clinical results demonstrating biological efficacy and safety in patients with Behçet's Disease.

The next step in the process will be ratification of the positive opinion by the European Commission. SGX945 has previously been granted both orphan drug and fast track designations from the US Food and Drug Administration (FDA) for the treatment of Behçet's Disease.

"We are extremely pleased to have received the positive opinion from the COMP and look forward to the European Commission granting the orphan drug designation for the SGX945 program. Behçet's Disease is an area of unmet medical need, with up to 18,000 people in the U.S., 50,000 people in Europe, 350,000 people in Turkey and as many as 1 million people worldwide affected by this incurable disease. Given the clinically meaningful improvements seen in our Phase 2 proof-of-concept study in patients with oral aphthous ulcers due to Behçet's Disease, we are hopeful dusquetide will have a role to play in helping underserved patients suffering from this difficult to treat and chronic auto-immune disease. The EMA's positive opinion signifies an important step for Soligenix as we continue to advance the program and adds significantly to the existing intellectual property estate surrounding this novel technology." Christopher J. Schaber, PhD
President and Chief Executive Officer of Soligenix

About Dusquetide

Dusquetide, the active ingredient in SGX945 (Behçet's Disease) and SGX942 (oral mucositis), is an innate defense regulator (IDR), a new class of short, synthetic peptides. It has a novel mechanism of action whereby it modulates the body's reaction to both injury and infection towards an anti-inflammatory, anti-infective, and tissue healing response.

IDRs have no direct antibiotic activity but, by modulating the host's innate immune system responses, increase survival after infections caused by a broad range of Gram-negative and Gram-positive bacterial pathogens. Dusquetide also accelerates resolution of tissue damage following exposure to a variety of agents including bacterial pathogens, trauma, and chemo- and/or radiation therapy. Preclinical efficacy and safety have been demonstrated in numerous animal disease models including mucositis, colitis, macrophage activation syndrome as well as bacterial infections. In addition, potential anti-tumor activity has been demonstrated in multiple in vitro and in vivo xenograft studies.

Dusquetide has demonstrated safety and tolerability in a Phase 1 clinical study in 84 healthy human volunteers. In Phase 2 and 3 clinical studies with dusquetide in over 350 subjects with oral mucositis due to chemoradiation therapy for head and neck cancer, positive efficacy results were demonstrated, including potential long-term ancillary benefits.

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