Cancer Drugs Losing Out: Pruning the Branches, Not Cutting the Trees

An oncologist puts the cancer patient on a targeted therapy, the cancer goes away, patient goes home. But, 6 months later, the cancer is back (relapsed) and is aggressive stage IV. Biologically, the cancer cells have mutated to bypass/ignore the expensive targeted therapy.

At the molecular level, the cancer cells are constantly mutating, evolving, and generating diversity. This phenomenon of cancer evolution is central to cancer relapse, tumor escape and therapeutic failure.

New research from the Institute of Cancer Research, UK, shows extreme diversity of cancer cell types in leukemia patients: multiple cancers within a cancer. 

Common Mutations Drive 12 Different Cancer Types

Cancer types from leukemia to breast cancer, and bladder cancer to lung cancer are all driven by a common set of genes containing driver mutations. Researchers from The Cancer Genome Network (TCGN) sequenced and analyzed genomes of 3,281 tumors from 12 different cancer types and discovered 127 genes that were involved in the initiation or progression of these cancers. This research appears in the October 17, 2013, issue of the journal Nature.