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Taiho Powers its Oncology Portfolio with Araris Acquisition

Taiho Powers its Oncology Portfolio with Araris Acquisition Taiho Powers its Oncology Portfolio with Araris Acquisition
IMAGE CREDITS: TAIHO VENTURES

In a strategic move to bolster its presence in the antibody-drug conjugate (ADC) space, Taiho Pharmaceutical has announced its acquisition of Swiss-based ADC specialist Araris Biotech for up to $1.14 billion. This deal underscores the growing interest in ADCs as a promising cancer treatment modality.

The acquisition agreement includes a $400 million upfront payment, with an additional $740 million tied to milestone achievements. The transaction is expected to close in the first half of 2025, solidifying Taiho’s position in the rapidly expanding oncology market.

Taiho and Araris: A Strengthened Partnership

Taiho and Araris have been collaborating since 2023 on ADC research targeting undisclosed oncological indications. With this acquisition, Taiho will fully integrate Araris’s cutting-edge ADC technology, infrastructure, and expertise into its operations. Araris will become a wholly owned subsidiary of Taiho, enabling seamless advancements in ADC drug development.

Araris, a spin-off from the Paul Scherrer Institute (PSI) and ETH Zurich, has developed a proprietary linker technology called AraLinQ. This innovative platform allows for the attachment of two or three cytotoxic payloads to off-the-shelf antibodies in a single step, setting it apart from conventional ADC approaches. The technology addresses common ADC challenges such as heterogeneity, blood aggregation, and high production costs, enhancing both safety and efficacy.

Araris’s Promising Pipeline and Future Clinical Trials

Currently, Araris has three preclinical ADC candidates expected to enter clinical trials between 2025 and 2026. Among these, two have disclosed targets: nectin-4 and NaPi2b, both of which are key oncological markers. The third candidate remains undisclosed.

Following the acquisition, Araris CEO Dragan Grabulovski expressed confidence in Taiho’s ability to accelerate the development of their ADC portfolio. “Taiho’s significant expertise in oncology will help us fast-track our potent ADC candidates for haematological and solid tumors,” Grabulovski stated.

Taiho’s President, Masayuki Kobayashi, echoed this sentiment, emphasizing that Araris’s expertise and technology platform will enhance Taiho’s drug discovery efforts. “We believe this acquisition will strengthen our capabilities and expand our oncology pipeline,” Kobayashi commented.

ADC Market Growth and Industry Competition

Taiho’s acquisition of Araris is part of a broader trend of major pharmaceutical companies investing heavily in ADC technology. Earlier this year, Chugai Pharmaceutical entered a research and licensing collaboration with Araris, valued at up to $780 million, further validating the company’s technology.

While Taiho’s investment is significant, it remains smaller than some of the blockbuster ADC deals in recent years. For example:

  • Pfizer acquired Seagen for $43 billion in December 2023, marking one of the largest ADC deals to date.
  • MSD completed a $10.8 billion ADC acquisition, while AbbVie closed a $10.1 billion ADC-related deal in recent years.

Conclusion: A Game-Changer for Taiho’s Oncology Ambitions

With this acquisition, Taiho strengthens its position in the competitive ADC landscape, gaining access to Araris’s groundbreaking linker technology and preclinical pipeline. As ADCs continue to reshape cancer treatment, Taiho’s strategic investment positions it as a key player in the evolving oncology market.

The coming years will be crucial as Taiho and Araris work together to advance their ADC candidates into clinical trials, paving the way for innovative and more effective cancer therapies.

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