Trastuzumab-based chemotherapy has demonstrated clinical benefits in the treatment of HER2+ breast cancer. There is a percentage of patients who do not respond to therapy and have a poorer prognosis than those who respond. To better understand the mechanisms behind trastuzumab resistance, researchers in China studied the role of transcription elongation factor A protein-like 9 (TCEAL9) in resistance to trastuzumab-based chemotherapy in HER+ breast cancer.
Tumors have a lower interstitial pH compared to healthy tissues, with tumor acidity having emerged as a driver of tumor progression as it can lead to tumor immune evasion. Solute carrier family 4 member 4 (SLC4A4), which encodes a sodium bicarbonate cotransporter involved in pH regulation and homeostasis in normal tissue, was the focus of studies in pancreatic cancer resistance in in vivo preclinical models. Researchers tested the impact of Slc4a4 deletion in cancer cells on tumor growth, anticancer immunity and response to immunotherapy in murine models of pancreatic ductal adenocarcinoma (PDAC).
Orgenesis Inc. and Kurve Therapeutics Inc. have announced promising preclinical study results for intranasal administration of a cell-based oncolytic virus-bearing product.
Inhibitors of cyclin-dependent kinase 4 (CDK4) and CDK6, such as palbociclib, have significantly improved progression-free survival of several breast cancer types, such as hormone receptor-positive, HER2-negative luminal breast cancers, with about 40% being unresponsive or refractory to therapy; the main cause of resistance is the selection of mutant clones in the target oncoprotein.
3D Medicines Inc. has raised HK$408 million (US$52.5 million) in a listing on the Hong Kong Stock Exchange. Its shares opened at HK$29 apiece, jumped by more than 20% by the middle of the day, and closed at HK$31.45 on the first trading day of Dec. 15.
Astellas Pharma Inc. reported top-line results showing zolbetuximab, a monoclonal antibody targeting Claudin 18.2, met the primary endpoint for progression-free survival as well as secondary endpoints for overall survival in the phase III Glow trial in CLDN18.2-positive, HER2-negative, locally advanced unresectable or metastatic gastric or gastroesophageal junction adenocarcinoma.
Magenta Therapeutics Inc., the developer of an antibody-drug conjugate intended to help prep certain relapsed/refractory acute myeloid leukemia and myelodysplastic syndrome patients for stem cell transplant or gene therapy, has stopped dosing the drug in part of an ongoing trial after observing two cases of serious adverse events (SAEs) possibly related to the candidate.
Fujifilm Corp. inked an agreement to purchase the global digital pathology business of Inspirata Inc., paving the way for expansion of its Synapse enterprise imaging offering. The transaction includes Inspirata’s Dynamyx software, which Fujifilm has distributed in the U.K. and certain European Union countries since mid-2020. Under the agreement, Fujifilm will acquire Inspirata’s digital pathology technology, as well as employees and customers associated with the brand. Financial terms of the deal were not disclosed. It is expected to close in early 2023.
Medshine Discovery Inc. has divulged benzospiroheterocyclic derivatives acting as prostaglandin E receptor 4 (PTGER4; EP4 receptor) antagonists reported to be useful for the treatment of cancer.
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