biomarker By Ivan Suarez Robles 14 Nov, 2010 A specific biological trait, such as the level of a certain molecule in the body, that can be measured to indicate the progression of a disease or condition.Related Articles: Paramedic Stem Cells Show Potential as a Treatment for Huntington’s Disease in Mouse StudiesBiomarkers: The Clues in usUpdates in HD Research: July-September 2020Updates in HD Research: January-March 2021Drs. James Gusella and Marcy MacDonald