RB1 and cancer: Other distinguished species found were mTOR (3.6 × 10−4) and its regulator, RPTOR (1.05 × 10−3), critical for controlling cancer metabolism [27], and structural proteins such as microtubule-associated proteins 1B, 4, and RB (1.15 × 10−3; 1.78 × 10−3; 7.3 × 10−3, respectively).