What Are Cancer Sleeper Cells?
Siddhartha Mukherjee calls dormant cells that already carry cancer mutations sleeper cells. A person can have them and still not have cancer.
In the illustration he gives, a lung of several million or maybe a billion cells might hold 2,000 cells carrying cancer mutations, and another lung might hold 750. He says those cells most likely arose by bad luck, as cells grew and made mistakes, and he says he does not know that for certain. The split he draws is an inflammatory response. One person gets that stimulation and then develops cancer. The other person's 750 cells stay dormant, quiescent, and asleep, and that person does not have cancer.