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Novartis to pay up to $2 billion for US biotech firm Excellergy

March 27, 2026 2:29 AM

By Marleen Kaesebier and ‌Bhanvi Satija

March 27 (Reuters) - ​Swiss ​drugmaker Novartis will buy California-based biotech company Excellergy in a deal worth up to $2 billion, it said on Friday, extending ‌its anti-allergy range and in line with plans to increase its ⁠U.S. focus.

A week ago it announced another deal to buy a breast cancer drug ‌candidate for up to $3 billion ‌from U.S. biotech firm Synnovation Therapeutics.

Novartis will pay up to $2 billion in upfront and milestone payments for Excellergy, it said, adding the deal ​is expected to close in the second half of 2026, subject to customary conditions, including regulatory approvals.

INCREASED RANGE OF ANTI-ALLERGY DRUGS

Excellergy's food allergy ⁠drug candidate, Exl-111, would extend Novartis' existing anti-allergy franchise, which includes its blockbuster Xolair, used for ​allergic asthma and other conditions, that faces increased competition in some EU markets.

A biosimilar, or drug similar to one already ​approved, was introduced to EU markets late ‌last year after some patents expired for Xolair, which is sold by Novartis outside the U.S. and by Swiss ⁠peer Roche's Genentech in the United States.

Like Xolair, Exl‑111 also targets the immune system's IgE antibodies but is longer-acting and designed to bind more tightly and ⁠remove IgE from its receptor.

It has been shown to suppress allergic signaling faster and more ​effectively than existing drugs in early studies but the benefit has yet to be tested in larger human trials.

In April last year, Novartis said it planned to invest $23 billion ‌to build and expand its facilities in the United States through the following half decade.

So far the company ‌has begun construction on R&D and manufacturing sites across four states, including California, ⁠and expanded its radioligand therapy ‌facilities in Indiana and ​New Jersey.

(Reporting by Bhanvi Satija, Marleen Kaesebier and Maria Rugamer, additional reporting by Ludwig Burger; Editing by Dave Graham and ‌Barbara Lewis)

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