“…Second, selection biases are clearly applicable and cannot be controlled for, like in previous analyses by Abel et al [2] , as well as Lenis et al [3] . Within the current study design, which exclusively investigated surgically treated patients, age was restricted to ≤75 yr at diagnosis to account for a more pronounced and more heterogeneous perioperative risk profile with increasing age, especially above 75 yr. Third, absence of specific information that would have allowed stratification according to the risk criteria, as well as detailed information regarding systemic therapy, including the sequence of systemic therapy, was not available within the current study population [1] , [26] , [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] , [35] . Fourth, pT3a-substage patients with tumor features (eg, perinephritic fat invasion) other than vascular invasion were excluded from the initial analyses and were subsequently considered in a secondary analysis without change to the recorded results.…”