New City Osaki Clinic homepage > About us > The concept of immune cell therapy 3
When we look at the websites of many medical facilities that provide immunotherapy, the CT images of tumors that became smaller are shown as a proof of efficacy—because these are easiest for patients to understand as the sign of efficacy. Cancer can shrink only with immunotherapy without standard therapies. However, as most patients are receiving standard therapies, for example, administration of anticancer agents in reality, it is unknown whether reduction of the size of the tumor can be attributed to the effect of immunotherapy. To show the effect of the combined use of immunotherapy, it is necessary to prove that the frequency of size reduction is clearly higher in the combination than in the treatment only with anticancer agents. Unfortunately, the results of the clinical studies that prove such superiority have not been obtained yet, which is a major reason for the negative view of immunotherapy held by some cancer specialists.
Prolongation of survival, rather than shrinkage of tumors, is considered most appropriate for evaluating the effect of cancer treatment.
This type of survival benefit is also attended by a significant increase in immunity.
This would indicate that survival benefit and increased immunity are correlated, and clinical trials are needed in order to verify this point going forward.
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