Cancers in infants and children are more and more frequent and are often difficult to treat due the still developing systems in their bodies. It is also difficult to have medical, clinical trials done for them. Since chemo and radiation therapies target all cells, something needed to be done to specifically target cancerous cells and reduce the risks and number of side-effects.
Scientists at Israel's Technion University have developed a system to tag cancer cells, and a nano-particle therapy to target those tagged cells alone. In lab tests with rats, the procedure has been shown to reduce tumors and increase life expectancy by 42%.
Though particularly relevant for children, I see no reason why this treatment will not also be suitable for adults.