KRAS and neoplasm: Furthermore, in patients with MT-KRAS in the serum, the growth rate remained constant even as circulating MT-KRAS was initially detected or appeared to increase, suggesting (1) the detection or increase in mutant KRAS templates was inconsequential, and (2) not only the growth rate of the entire tumor was constant but cells harboring MT-KRAS had no impact on the tumor’s growth rate nor were likely growing faster.