To the Editor The optimal timing of surgery following chemoradiotherapy for rectal cancer continues to be debated. Adding to the literature is a recent analysis of Italian registry data,1 finding that surgery beyond 8 weeks in patients with a poor response was associated with worse survival outcomes. Based on this finding, the authors recommend patients who do not respond well to chemoradiotherapy (ypT3-4 or N1-2) should “be identified early…and undergo surgery without delay.”1 We are concerned that this strong recommendation was drawn from a single uncontrolled data series. Further, this approach is practically limited by the timing and accuracy of standard chemoradiation response assessment.