a Kaplan-Meier analysis disclosed a 5-year OS of 84.4% for patients with Gas 6− tumors compared to 77.8% for patients with Gas 6+ tumors in pRCC type 1 (p = 0.179, log-rank). b Kaplan-Meier analysis disclosed a 5-year OS of 64.8% for patients with Gas 6− tumors compared to 59.9% for patients with Gas 6+ tumors in pRCC type 2 (p = 0.900, log-rank).