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Tacalyx secures €11 million to advance lead TACA-targeting ADC programme toward the clinic

€11 million from the existing syndicate in a first closing of the seed extension. TCX-201 is selected as first clinical candidate, with a CTA filing planned for 2027.

Tacalyx has secured €11 million in a first closing of its seed extension round from its existing international investor syndicate, including Boehringer Ingelheim Venture Fund (BIVF), Kurma Partners, High-Tech Gründerfonds (HTGF), Eurazeo, Creathor Ventures and Thuja Capital. The company intends to add further investors in a subsequent closing.

At the same time Tacalyx has selected TCX-201 as its first clinical candidate. TCX-201 is an antibody-drug conjugate (ADC) against an undisclosed TACA, developed on Tacalyx's platform for gastrointestinal malignancies and other solid tumors. The proceeds will take TCX-201 through preclinical development toward a clinical trial application (CTA), planned for 2027, and advance the earlier pipeline. The next clinical candidate is to be selected by the end of 2026.

"Over the past years, we have built a powerful platform capable of reliably discovering and developing high-affinity antibodies against TACAs, sugar structures specifically found on tumour cells. […] With that, we are now redoubling our laser focus on translating the cutting-edge science on which the company was founded into transformative cancer therapies. Cancer patients cannot wait."

— Jean Engela, CEO

"Tacalyx has delivered on its promise to unlock the therapeutic potential of TACAs, a frontier in oncology that has long been considered undruggable. With the selection of its first clinical candidate and significant advances with its earlier pipeline, the company is now rapidly transitioning from discovery research to a clinical-stage biotech."

— Dr. Klaus Schollmeier, Chairman of the Board

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AACR 2026 poster 5631 on TCX-201, with in vitro, in vivo, pharmacokinetic and toxicology panels

Scientific presentations

TCX-201 and TCX-101 data presented at AACR 2026

Two posters at the AACR Annual Meeting 2026 in San Diego: the preclinical profile of first clinical candidate TCX-201 (Poster 5631) and TCX-101 as a trispecific T-cell engager (Poster 5584).