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RESEARCH Brain Inflammation A Hallmark Of Autism, Large-Scale Analysis Shows Johns Hopkins study is largest so far of gene expression in autism brains hopkinsmedicine.org ![]() While many different combinations of genetic traits can cause autism, brains affected by autism share a pattern of ramped-up immune responses, an analysis of data from autopsied human brains reveals. The study, a collaborative effort between Johns Hopkins and the University of Alabama at Birmingham, included data from 72 autism and control brains. It was published online today in the journal Nature Communications. “There are many different ways of getting autism, but we found that they all have the same downstream effect,” says Dan Arking, Ph.D., an associate professor in the McKusick-Nathans Institute for Genetic Medicine at the Johns Hopkins University School of Medicine. “What we don’t know is whether this immune response is making things better in the short term and worse in the long term." The causes of autism, also known as autistic spectrum disorder, remain largely unknown and are a frequent research topic for geneticists and font-size: 11px;neuroscientists. But Arking had noticed that for autism, studies of whether and how much genes were being used — known as gene expression — had thus far involved too little data to draw many useful conclusions. That’s because unlike a genetic test, which can be done using nearly any cells in the body, gene expression testing has to be performed on the specific tissue of interest — in this For
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