cbs evening news starts now. tonight, 62 million americans are under threat of severe weather from alabama to new york. good evening and thank you for being with us on this memorial day. i am maurice dubois in for norah o donnell. tonight, storms a part of the same system that brought deadly tornadoes to the central u.s. this weekend. this is valley view, texas, where tornadoes bulldozed through, turning homes into unrecognizable piles of lumber and metal. at least 23 people have been killed, including two children, in texas, arkansas, oklahoma, kentucky, and virginia. the force of the winds clear from the sheer scale of the damage tonight. now that system is drenching parts of the northeast, slowing down returning travelers, more than 5,000 flights have been delayed, and major hubs like atlanta, chicago, new york, with alerts posted up and down the east coast. cbs s meg oliver starts us off with more on these catastrophic storms. reporter: shattered homes and eve
Results from a new phase 1 trial indicate that immunotherapy could be used to treat the most common form of colorectal cancer, also known as bowel cancer. Consistent responses to immunotherapy have been reported in patients with the most common type of colorectal tumors, known as MSS mCRC, with 61% of patients seeing their tumor shrink or remain stable after receiving treatment.
For nearly two decades, how kidney cancer becomes resistant to rapalog drugs has baffled the scientific community. Now a study by researchers at UT Southwestern Medical Center s Kidney Cancer Program sheds light. Published in the Proceedings of the National Academy of Sciences, the study "Unconventional Mechanism of Action and Resistance to Rapalogs in Renal Cancer" provides evidence for an unanticipated role for nontumor cells in mediating the therapeutic effects of rapalogs in kidney cancer.
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