Reply from Authors re: Andrea Minervini, Giampaolo Siena, Sergio Serni, Marco Carini. Robotic laparoscopic single-site partial nephrectomy: almost like driving with the steering lock engaged. Eur Urol 2014;66:518–9

The term trifecta includes all the parameters considered paramount regarding the functional, oncologic, and clinical efficacy and safety of a nephron-sparing procedure [1–3]. In our recently published study, we demonstrated that robotic laparoendoscopic single-site (R-LESS) partial nephrectomy (PN) cannot achieve the same trifecta results as the conventional approach, which must be emphasized to urologists worldwide [4]. This is probably because R-LESS PN performed according to the current fashion is almost like driving with the steering lock engaged, as correctly described by Minervini et al. [5]. The retrospective nature of the study and the low numbers of the population researched as reported by Komninos et al., as well as by Minervini and associates, could have engendered errors in the final results [4,5]. Therefore, we thoroughly checked and analyzed the baseline characteristics and the tumor complexity of both groups, to feel confident that we at least performed similar