Daiichi Sankyo Co., Ltd. got two pieces of good news in two days for Enhertu (fam-trastuzumab deruxtecan-nxki). First came the AstraZeneca plc-partnered drug’s approval in HER2-mutated non-small cell lung cancer (NSCLC), a much smaller indication than breast cancer but still a potentially lucrative market. That was followed by a favorable decision in arbitration about antibody-drug conjugate technology that Seagen Inc. brought against the Japanese drug maker.
Daiichi Sankyo/AstraZeneca Get Two Lucky Breaks For Enhertu
The FDA granted accelerated approval for the small but significant HER2-mutated NSCLC indication, while the arbitrator in Seagen’s arbitration case ruled in Daiichi Sankyo’s favor.

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