Pathophysiological Roles of Two Intracellular P-Type ATPases: The Cancer-Associated Na&lt;sup&gt;+&lt;/sup&gt;,K&lt;sup&gt;+&lt;/sup&gt;-ATPase α3 Isoform and the Parkinson's Disease-Related ATP13A2. This evidence concerns the gene DNAH8 and Parkinson disease.