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July 25, 2023

Invetx Completes Development of Canine and Feline Half-Life Extension Technology Platform that Significantly Extends Duration of Monoclonal Antibody Treatment Effect

Long-Acting Therapeutics Make Chronic Diseases More Manageable and Provide Better Value for Pet Owners

Boston, MA- July 25, 2023 – Invetx, a pioneer in protein-based therapeutics for animal health, announced that it has recently completed development of its species-specific, half-life extension technology for dogs and cats which leads to superior extended duration of activity for the company’s veterinary monoclonal antibodies. The novel technology enables the company to optimize antibody drug treatment options for chronic, serious diseases in dogs and cats. Invetx has been granted four patents in the U.S. related to its half-life extension technology, and has multiple patents pending in the U.S., Europe and other jurisdictions.

“We successfully completed an extensive engineering program to identify and validate novel species-specific Fc variants and combinations of variants, which have FcRn binding affinities that improve the serum half-lives of antibodies. Our selected variants deliver significantly longer duration of drug activity in dogs and cats compared to those using standard human half-life extension technology,” said Bill Brondyk, PhD, chief scientific officer, Invetx. “The technology has been applied to all our product candidates and we have demonstrated its superior effect in the target species.”

“By lengthening the time between doses – to every other month, quarterly or possibly even longer – Invetx is making the treatment of chronic diseases more manageable and convenient for pet owners,” said Juergen Horn,, PhD, chief executive officer, Invetx. “We believe that continuous, professionally administered treatment with our novel therapeutics, combined with regular check-ups in the clinic, can lead to better health outcomes for pets, reduce cost of treatment and provide greater value to  owners.”

The half-life extension technology is part of Invetx’s overall integrated platform, which includes best-in-class antibody discovery, optimization, development and manufacturing for veterinary biotherapeutics. The company is advancing a pipeline of novel antibody therapeutics for multiple diseases in cats and dogs.

About Invetx
Invetx has raised $86 million since 2018, including investors F-Prime Capital, Novo Holdings, GV, Eight Roads, Anterra Capital, Casdin Capital and funds managed by Tekla Capital Management, LLC. The company has strategic partnerships with Boehringer Ingelheim, a global leader in animal health, AbCellera, a global technology company specializing in antibody discovery located in Vancouver, BC, and WuXi Biologics, a global company with leading biologics technology platforms. Invetx is a private company headquartered in Boston, Massachusetts. For more information, see

Invetx Partners and Investors:
Juergen Horn,, PhD
Chief Executive Officer

Invetx Media:
Susan Kinkead

Invetx’s Market Research Study Reveals Nearly 40% of Dogs in the U.S. Suffer from Chronic Osteoarthritis/Pain

Boston, MA, November 29, 2023 – Invetx, a pioneer in protein-based therapeutics for animal health, announced results of a market research study showing that both veterinarians and pet owners would switch to a longer-acting (and higher-priced) therapeutic to treat pain associated with chronic osteoarthritis in their pets.

Invetx Appoints Dr. Marcus Remmers, Novo Holdings Partner and Animal Health Industry Leader, to Board of Directors

Boston, MA – June 26, 2023- Invetx, a pioneer in protein-based therapeutics for animal health, today announced the appointment of Dr. Marcus Remmers to its board of directors.

Invetx Announces Oversubscribed Series B Financing of $60.5 Million to Advance Portfolio of Best-in-Class Veterinary Biotherapeutics

Company positioned to bring portfolio of novel antibody product candidates through development to market approval Round includes new investors F-Prime Capital, Novo Holdings, GV and