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![Study describes new brain disorder Qing Ouyang, left, and Eric Morrow led a study tracing how a mutation causes a rare brain disease. Photo by Nicholas Dentamaro](https://medicine.at.brown.edu/wp-content/uploads/2016/09/morrow-GPT2-351x185.jpg)
Study describes new brain disorder
Researchers show how mutations lead to a rare developmental and potentially degenerative disease.