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RQ Bio Secures $115M to Fast-Track Long-Acting Antibody RQB01, Revolutionizing Flu Prevention for Vulnerable Patients

GlobeNewswire UK
Overview
RQ Bio has successfully closed a $115 million (approximately £85.5 million) Series A funding round, led by Frazier Life Sciences, to accelerate the clinical development of RQB01. This long-acting antibody program is designed to provide robust, broad protection against seasonal influenza with a single dose, specifically targeting high-risk and immunocompromised patient populations. Currently in IND-enabling studies, RQB01 holds the potential to offer immediate and sustained passive immunity, addressing a critical unmet need in flu prevention.
In Depth

Background

Influenza poses a significant global public health challenge, affecting millions annually and leading to severe illness and mortality worldwide. Vulnerable populations, particularly those with compromised immune systems such as organ transplant recipients, cancer patients, and the elderly, often receive insufficient protection from existing vaccines and face a heightened risk of severe complications. Traditional influenza vaccines typically require time to induce an immune response and demonstrate limited efficacy in these high-risk groups. RQ Bio’s innovative approach aims to bridge this critical gap in preventive care for these populations. The successful Series A funding round, led by Frazier Life Sciences, underscores strong investor confidence in pioneering antibody technologies within the preventive medicine sector.

Key Findings

RQ Bio has secured $115 million (approximately £85.5 million) in Series A funding, which will specifically accelerate the clinical development of RQB01, a long-acting antibody program targeting seasonal influenza prevention in high-risk and immunocompromised individuals. RQB01 represents a next-generation, long-acting antibody engineered to deliver potent and broad protection against seasonal influenza viruses from a single dose. Unlike conventional vaccines that rely on the host’s immune system to generate antibodies over time, RQB01 provides direct, immediate antibody protection, conferring passive immunity to these vulnerable populations. The candidate is currently undergoing IND (Investigational New Drug)-enabling studies, with subsequent clinical trials planned to evaluate its safety and efficacy.

Significance & Outlook

The successful Series A funding establishes a robust foundation for RQ Bio to rapidly advance RQB01’s clinical development. Should RQB01 achieve anticipated results in clinical trials and gain regulatory approval, it could profoundly transform influenza prevention for high-risk and immunocompromised patients. The prospect of long-term protection from a single administration not only enhances patient convenience but also promises to significantly reduce the morbidity and mortality associated with seasonal influenza. This groundbreaking technology is also anticipated to contribute substantially to future pandemic preparedness efforts, marking a pivotal advancement in medical science.

Source: https://www.globenewswire.com/news-release/2026/06/24/3316603/0/en/rq-bio-announces-115-million-85-5-million-series-a-financing-to-advance-long-acting-antibody-programme-rqb01-for-full-season-influenza-prevention.html

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