The 2022 Nobel Prize in chemistry was awarded to Carolyn Bertozzi of Stanford University, to Morten Meldal of the University of Copenhagen, and – for the second time – to Barry Sharpless of The Scripps Research Institute “for the development of click chemistry and bioorthogonal
chemistry.”
Click chemistry, the Nobel Committee’s Olof Ramström told reporters while announcing the prize, “is almost like it sounds – it’s all about linking different molecules.”
He likened click chemistry to a seatbelt buckle, whose interlocking parts can be attached to many different materials, linking them by snapping the two parts of the buckle together.
“The problem was to find good chemical buckles,” Ramström said – chemicals that “will easily snap together, and importantly, they won’t snap with anything else.”
Sibylla Biotech Srl raised €23 million (US$22.9 million) in series A funding to progress its two lead programs in targeted protein degradation, to broaden its pipeline, and to enhance its computationally intensive discovery platform. The company is expanding the druggable proteome in a highly original fashion. It applies mathematical techniques originally developed in theoretical physics to simulating the intermediate folding states of target proteins that have no obvious drug-binding pockets. These may well have transient structures that a small molecule can bind. So instead of drugging the native, biologically active molecule, it aims to develop small-molecule drugs that lock them into an intermediate state. They are then eliminated by the usual protein degradation pathways that operate within cells.
Tumor mutational burden (TMB), a biomarker used to assess whether a patient will respond to immunotherapy, needs to be recalculated in order to be useful for patients of Asian or African descent. Scientists at the Dana-Farber Cancer Institute found a significant bias in the estimated TMB values affecting these populations and adjusted them for those patients.
The U.S. FDA has approved Taiho Oncology Inc.’s Lytgobi (futibatinib) for adults with previously treated, unresectable, locally advanced or metastatic intrahepatic cholangiocarcinoma harboring fibroblast growth factor receptor 2 (FGFR-2) gene fusions or other rearrangements. The approval arrived on its Sept. 30 PDUFA date.
Calithera Biosciences Inc.’s in-licensing deal to take ownership of a pair of oncology assets from Takeda Pharmaceutical Co. Ltd. may be on its way to paying off, perhaps especially with regard to the oral Syk/FLT3 inhibitor mivavotinib, formerly known as CB-659/TAK-659.
Zai Lab Ltd. has agreed to pay $30 million up front to in-license from Seagen Inc. exclusive rights to the antibody-drug conjugate (ADC) Tivdak (tisotumab vedotin) in mainland China, Hong Kong, Macau and Taiwan. Seagen is also eligible to receive development, regulatory, and commercial milestone payments of undisclosed value, as well as tiered royalties on net sales of the drug in Zai’s territory.
Pheon Therapeutics Ltd. is working to bring next-generation antibody-drug conjugate (ADC) payloads and enhanced tolerability into the clinic after closing a $68 million series A.
Researchers at the Walter and Eliza Hall Institute of Medical Research (WEHI) in Melbourne, Australia, have developed a new genome editing technique than can activate any gene, including those that have been silenced, allowing new drug targets and causes of drug resistance to be explored.
CRISPR-based cell therapies continued to gain steam Sept. 27 with the announcements of a potentially valuable big pharma collaboration and an ambitious global regulatory push.
Japan’s Ministry of Health, Labor and Welfare approved Daiichi Sankyo Co. Ltd.’s Ezharmia (valemetostat tosilate), the first dual inhibitor of histone methyltransferases EZH1 and EZH2 for the treatment of patients with relapsed or refractory adult T-cell leukemia and lymphoma. It’s Daiichi Sankyo’s fifth new oncology medicine approved in Japan in the past three years.
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