Tiny genetic segments may give a big tip-off to platinum chemoresistance in patients with small cell lung cancer, researchers said.

Three microRNAs were linked to de novo chemoresistance in a small study led by Glen J. Weiss, MD, of Scottsdale Healthcare and the Translational Genomics Research Institute (TGen), both in Scottsdale, Ariz.

He presented the results here at the Joint Conference on Molecular Origins of Lung Cancer sponsored by the American Association for Cancer Research and the International Association for the Study of Lung Cancer.