Some believe that breast cancer results from a complex, multistep process, beginning with a faulty gene that causes cells to misbehave ​ — to divide furiously, to invade other tissue, to evade capture by immune cells, and to launch stealthy attacks on vital organs.
Mõningate arvates tuleneb rinnavähk komplekssest, mitmeastmelisest protsessist, mis saab alguse vigasest geenist. See geen põhjustab rakkude väärtalitlust: tormilist jagunemist, muudesse kudedesse tungimist, immuunrakkude haardest pääsemist ning hiilivaid rünnakuid elutähtsatele organitele.