Dr. Greg Riely, medical oncologist from MSKCC, discusses the controversial question of whether patients should continue on an oral EGFR tyrosine kinase inhibitor after progression.

MSKCC medical oncologist Dr. Greg Riely explains the growing value of a repeat biopsy after the development of acquired resistance in patients with an EGFR mutation.

Medical oncologist Dr. Greg Riely, MSKCC, summarizes the development of acquired resistance after a good initial response to EGFR inhibitor therapy and the clinical patterns of progression commonly seen.