A study conducted by researchers at the Fred Hutchinson Cancer Research Centre has showed that the experimental, living T-cell therapy has put patients with cancer in remission.
Patients with acute lymphoblastic leukemia, non-Hodgkin lymphoma and chronic lymphocytic leukemia have participated in the trial.
The patients, who were not expected to survive for more than a few months as their disease had previously relapsed or was resistant to other treatments, showed no signs of the disease.
The Juno Therapeutics-funded trial has been designed to test the safety of the latest iteration of an experimental immunotherapy, in which a patient’s own T cells are reprogrammed to eliminate cancer.
T cells are white blood cells that can detect foreign or abnormal cells, including cancerous ones.
The reprogramming involves genetically engineering the T cells with synthetic molecules called chimeric antigen receptors (CAR), which enable them to target and destroy tumour cells bearing a particular target.
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By GlobalDataFred Hutchinson Cancer Research Centre immunotherapy researcher Stanley Riddell said that progress now being made, underscored by these latest results, is finally making immunotherapy ‘a pillar of cancer therapy’.
According to the ongoing study, 27 out of 29 patients with an advanced blood cancer experienced sustained remissions.
Nearly 19 of 30 non-Hodgkin lymphoma patients experienced partial or complete responses, while 27 of 29 acute lymphoblastic leukaemia patients showed no trace of cancer in their bone marrow following their infusions.
"Much like chemotherapy and radiotherapy, it’s not going to be a save-all," Riddell added.
Image: Fred Hutchinson Cancer Research Centre immunotherapy researcher Stanley Riddell. Photo: courtesy of Fred Hutchinson Cancer Research Centre.