An international research team has uncovered a new mechanism crucial to the production of cellular proteins. When this mechanism is disrupted, the blueprints used by the cell to produce proteins are inaccurately edited through a process called splicing. The study sheds light on how specific mutations may lead to the retinal disease retinitis pigmentosa. Importantly, these findings could also open the door to new diagnostic tests and treatments for a range of other diseases, including certain cancers, Parkinson's, and Alzheimer's.