Avacta BOD’s know what they have….6 Apr 2026 15:19
This shows you AVA6103 is worth billions once safety and efficacy is proven.
But Daiichi made more money licensing the out exatecan derivatives.
Daiichi Pharmaceutical Co., Ltd. (now Daiichi Sankyo) got the furthest in attempting to bring exatecan (DX-8951f) to market, taking it through Phase I, Phase II, and into Phase III clinical evaluations.
If Daiichi Sankyo had successfully brought exatecan to market as a standalone drug (rather than as a payload in their DXd ADC platform), its value would have likely been substantial but hampered by early toxicity challenges. However, the strategic pivot to using exatecan derivatives in Antibody-Drug Conjugates (ADCs) led to a much higher valuation through partnerships with AstraZeneca and Merck, with potential deal values reaching up to $22 billion for specific, similar technology.
Here is the breakdown of the value associated with Daiichi's "exatecan" efforts:
* Initial Exatecan (DX-8951f): Early trials for exatecan as a standalone drug showed promise but faced challenges with dose-limiting toxicities, including neutropenia and gastrointestinal effects. While it was determined to be a strong topoisomerase I inhibitor, its failure to establish a broad, safe therapeutic window as a standalone treatment limited its initial market value.
* The "Exatecan Derivative" (DXd) Revolution: Daiichi Sankyo realized the potential of exatecan by developing it into a "payload" (DXd) for ADCs. The success of this strategy is best represented by Enhertu (trastuzumab deruxtecan), an exatecan derivative ADC developed with AstraZeneca.
* AstraZeneca Deal (Enhertu): In 2019, AstraZeneca agreed to pay up to $6.9 billion to co-develop Enhertu.
* AstraZeneca Deal (Dato-DXd): In 2020, another deal worth up to $6 billion was signed for a second ADC, Dato-DXd.
* Merck Deal (3 ADC candidates): In 2023, Merck entered a deal worth up to $22 billion for three of Daiichi’s other DXd-based ADCs.
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If exatecan had been successfully launched earlier as a targeted, safe treatment, it would likely have rivaled or surpassed other topoisomerase-based therapies. Its successful adaptation into DXd, however, created a much larger, multi-billion dollar impact on Daiichi Sankyo’s market capitalization.
Good luck all
Keep hold of your golden shares.
T. W. A. T. ‘s
T horn. W ynd. A nd T ouk
Can you close the door after yourselves