This document discusses the "EFRUZHU CANCER (CARCİNOGENESİS) THEORY" regarding activator-repressor proteins and CPG island methylations. During normal cell transcription and expression, activator proteins are needed, but after neoplastic transformation, promoter regions become hypermethylated and repressor proteins prevent transcription and expression. In contrast, mutated genes can be transcriptionally expressed through activator proteins binding to hypomethylated promoter regions. Abnormal signaling via mutated receptors and signaling pathways (involving nitric oxide, guanilate cyclase, cyclic monophosphate, and calcium mobilization) allow foreign DNA or mutated genes to dominate. However, normal DNA sequences