In research that may be a step forward toward finding personalized treatments for Tourette disorder, scientists at Rutgers University–New Brunswick have bred mice that exhibit some of the same behaviors and brain abnormalities seen in humans with the disorder.

As reported in the Proceedings of the National Academy of Sciences, the researchers, using a technique known as CRISPR/Cas9 DNA editing, inserted the same genetic mutations found in humans with Tourette disorder into the corresponding genes in mouse embryos. After the mice were born, the scientists observed their behavior compared with littermates without the gene mutation insertion. The mutations that were inserted were discovered by some members of the same research team who have spent more than a decade focused on investigating genetic factors in Tourette disorder.

The researchers said the findings indicate that these mice are a highly useful model to study the neurobiology of Tourette disorder and to test new medications. To read the full story.