By Deena Beasley (Reuters) – Trial data on Amgen Inc’s Lumakras will be released later on Tuesday by the World Conference on Lung Cancer (WCLC), but meeting organizers decided to hold until Aug. 7 results from a study in combination with drugs that help the immune system attack cancer. The study, which will be the first report of how well Lumakras works in combination with immunotherapies – Merck & Co’s Keytruda and Roche Holding AG’s Tecentriq – was selected to be part of the press program at the organization’s Vienna meeting, WCLC spokesman Chris Martin said on Tuesday. Lumakras is an oral d…