MAPT and psychiatric disorder: These include five genes encoding proteins that aggregate in neurodegenerative and/or mental illness: <i>CRMP1</i> (also called <i>DPYSL1</i>), <i>DISC1</i>, <i>MAPT</i> (encoding the Tau protein), <i>PRKN</i> (also called <i>PARK2</i>, encoding Parkin), and <i>SOD1</i>.