News|Articles|April 20, 2023

FDA Grants Breakthrough Therapy Designation to SAB Biotherapeutics for Influenza Immunotherapy

Author(s)Alivia Leon

SAB Biotherapeutics has received both breakthrough and fast track designations from FDA for its lead antibody drug candidate for treating influenza.

SAB Biotherapeutics, a US-based clinical-stage biopharmaceutical company, announced on April 18, 2023 that FDA has granted breakthrough therapy designation to SAB-176, an investigational therapeutic, for post-exposure prophylaxis for Type A and Type B influenza illness in high-risk patients. FDA also granted the treatment fast track designation on April 13, 2023.

SAB-176 is a fully human, multi-epitope-binding, broadly neutralizing immunoglobulin antibody therapeutic being developed for several influenza indications, including treatment of high-risk patient populations as well as pre- and post-exposure prophylaxis.

FDA’s breakthrough therapy designation expedites the development and review of a medicine that is intended to treat a serious or life-threatening condition, and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over therapies currently available.

“Influenza continues to pose considerable health concerns both in the [United States] and on a global scale. This [b]reakthrough [t]herapy designation signifies an important step forward in our fight against this disease," said Eddie Sullivan, co-founder, president, and CEO of SAB Biotherapeutics, in a company press release. "Even though both designations can be requested early in development, the requirements for [b]reakthrough [t]herapy designation are higher than those for the [f]ast [t]rack program. For [b]reakthrough [t]herapy designation, the improvement demonstrated must be substantial. We are proud that, based on generated preclinical and clinical evidence, SAB-176 has received both [b]reakthrough and [f]ast [t]rack designations, a combination rarely seen. These designations further assure us that SAB-176 has a clear regulatory and clinical development path to progress this important therapeutic.”

Source: SAB Biotherapeutics


Related to this article

PharmTech Weekly Roundup—October 2, 2026
This week on PharmTech, Merck diversified its pipeline, USP emphasizes supply chain security, AI systems are examined, and speakers preview their presentations at CPHI Milan and AAPS PharmSci 360.
CPHI Milan 2026: Nitrosamine Risk Mitigation, Part 1
Capsugel's Bram Baert and Sandrine Picco argue that chasing zero nitrite in pharmaceutical excipients is often impractical and costly. They recommend setting scientifically justified, risk-based limits and consistently staying below them.
Regulatory Roundup—September 2026
The FDA opened an expedited IND pilot, tightened scrutiny of foreign trial data, and finalized a rule recognizing non-animal testing methods. In Europe, the EMA advanced pharmaceutical legislation reform, restricted 2 legacy products, and opened an injectable-iron safety review.