CDK4 and neoplasm: Of note, patients with mRNA tumor expression of CDK4 higher than the median value had a tendency to a longer median PFS [(5.23 months, 95% CI 3.04–7.43) vs. (1.90 months, 95% CI 0.64–3.16), p = 0.11] and OS [(15.53 months, 95% CI 8.99–22.09) vs. (10.57 months, 95% CI 0.0–23.19), p = 0.098] (Table 3).