Effects of XRT, PBRT on IQ score in children with brain tumours

There was no significant difference in the decline in intelligence quotient (IQ) score over time between pediatric brain tumor patients treated with either photon radiation (XRT) or proton beam radiation therapy (PBRT), according to a new study. On a multivariate analysis, XRT was associated with a significant decline in IQ score, while PBRT was not; however, the slopes of the two were no different, and further study is needed to untangle potential differences in cognitive effects.

Cancer Network