We need to examine the impact of tobacco use on a wider range of therapeutic regimens and settings, with more detailed longitudinal tobacco use assessment. Research in this area is impeded by inadequate assessment of tobacco use after cancer diagnosis and a lack of valid, harmonized measures that are tailored to the trajectory of cancer diagnosis, treatment and survivorship.(15) The NCI-AACR Cancer Patient Tobacco Use Assessment Task Force formed in 2013 to develop recommendations for assessing tobacco use by cancer patients. The long- range goal of the Task Force is to advance the state of knowledge about the effect of tobacco use after a cancer diagnosis, to inform cancer treatment decision-making and to guide patients and providers regarding the timing and clinical significance of tobacco cessation.