In this way, patients could receive more, growth, ordoses of chemotherapy. But the tests 20 patients who 20 patients, were not due to the small amount of the vector by the bone marrow cells are removed successfully.. The beginningThe development of gene therapy began at MD Anderson over a decade, two researchers undertook a series of landmark gene therapy studies. – Deisseroth, then chairman of the Department of Hematology was the first the of an experimental gene augmentation program in patients. His idea was bone marrow cells bone marrow cells in patients with either breast or ovarian cancer with a gene with a gene to against against resistance to chemotherapy drugs.