&quot;The most promising research...&quot; ...Varies, at the moment it is definitely immune system related, in other words: It is all about how we can reignite the fire of the immune system against the cancer cells which often have immunosuppressive micro-environments (the stop the attacks of the body against the tumor by inactivating immune cells). (<a href="http:&#x2F;&#x2F;www.sciencemag.org&#x2F;content&#x2F;342&#x2F;6165&#x2F;1432.full" rel="nofollow">http:&#x2F;&#x2F;www.sciencemag.org&#x2F;content&#x2F;342&#x2F;6165&#x2F;1432.full</a> (2013))