Exploiting deficiencies in tumor cells’ inability to repair damage to their DNA has been one of the most successful endeavors of oncology research in recent memory. There are four approved PARP inhibitors to treat certain types of breast, ovarian, pancreatic and prostate cancers. Multiple other synthetic lethal combinations that might push repair-deficient tumors into cell death are being investigated. In the July 29, 2022, issue of Science, researchers at Yale University have described another approach to turning DNA repair defect against itself. Startup Modifi Biosciences Inc. is now on course to translate that work.

After an eight-year odyssey, the first cytidine triphosphate synthase 1 (CTPS1) inhibitor has entered the clinic, with Step Pharma SAS announcing it has simultaneously begun studies in the U.S. and the U.K. The phase I/II trial is assessing Step’s lead program, STP-938, in relapsed/refractory B- and T-cell lymphomas, with the first U.S. site opening for enrollment this week.

Elevation Oncology Inc. has picked up the global rights to SYSA-1801, an anti-Claudin 18.2 antibody-drug conjugate (ADC) candidate, from CSPC Megalith Biopharmaceutical Co. Ltd. in a deal worth up to $1.195 billion. Under the terms, Elevation gets rights to develop and commercialize SYSA-1801 outside of mainland China, Hong Kong, Macau and Taiwan.

Tumor heterogeneity is recognized as an important way in which tumors are able to grow, invade surrounding tissue, metastasize and develop resistance to therapies. But linking specific states to the overall biology of tumors has been a challenge.