Angiogenin (ANG) binds to F-actin on the surface of endothelial cells. Once bound, ANG is endocytosed and translocated to the nucleus where it stimulates ribosomal RNA syntheses which induce vascularisation of normal and malignant tissues (Dickson et al. 2009). Defects in ANG can cause amyotrophic lateral sclerosis 9 (ALS9; MIM:611895), a fatal progressive neurodegenerative disorder characterised by the preferential loss of motor neurons in the brain stem, motor cortex and spinal cord, resulting in paralysis and respiratory failure between 3 to 5 years of onset of symptoms (Padhi et al. 2014).