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## Etiology    |**Citation** | **Title** |**Title**  | **Comment** | |:------------|:----------|:------------| |:----------|:------------|  | Astrocyte metabolism in TS \citep{25735483} | A collaborative genetic study shows association of TS with genes expressed in astrocytes, especially with 33 genes involved in glycolosis and glutamate metabolism. The results not only narrow the hunt for genes that may cause TS, they encourage future electrophysiological, imaging and pharmacological studies in a new direction. |   | NMDA receptor gene polymorphism in Han Chinese \citep{26321256} | This relatively small sample provided preliminary evidence for linkage of TS and the gene for the NMDA receptor 2B subunit. |