Kim et al. (2016) also showed that poorer motor function was associated with higher radial diffusivity values in the CST for the Val/Met and Met/Met genotype groups in the early chronic stroke phase, which demonstrated that motor recovery in stroke patients might be affected by the BDNF val66met polymorphism, possibly through its effects on the distinct pathological processes underlying CST degeneration. Here, BDNF is linked to stroke disorder.