Based on limited published evidence, FXYD6-FXYD2 readthrough encodes a protein that modulates ATP-dependent sodium-potassium pump function. The gene is expressed in the brain and belongs to the FXYD family, which regulates the Na+/K+-ATPase complex. A missense variant in FXYD6-FXYD2 readthrough was identified in a childhood-onset schizophrenia case, suggesting potential involvement in neurodevelopmental disorders 1. However, functional characterization remains limited.