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The last few years have seen an increase in the number of randomized controlled trials (RCTs) of new agents in metastatic solid tumors using progression-free survival (PFS) as the primary end point. Some trials showing improvement in PFS, without a corresponding increase in overall survival (OS), have led to approval of new drugs and/or changes in standard of care. This suggests a growing belief in the oncology community that delaying progression in metastatic disease is a worthy goal, even if OS is not improved. But is a new treatment that improves PFS really an advance for patients? Or is it only lowering the bar to declare active some of our much-heralded new molecular targeted therapies? We believe that as a community, this trend requires discussion and debate.