cancer
Chemotherapy and Other Systemic Cancer Treatments
Gene Therapy
Because changes (mutations) of genes cause cancer, researchers are looking at ways to manipulate genes to fight cancer. One form of gene therapy involves genetically modifying T cells (a type of immune cell)—see also New, still-experimental, techniques allow scientists to insert new genes into a cells, switch off abnormal genes, or increase the activity of helpful genes (see also Gene Therapy ). Doctors hope these techniques may one day be useful for treating cancer. 