Minimal Residual Disease

About Minimal Residual Disease

Minimal residual disease (MRD) refers to the presence of tumor-specific DNA in the body after cancer treatment. These fragments of genetic information, known as circulating tumor DNA (ctDNA), are shed into the blood by solid tumors as part of the tumor growth cycle. Their presence may indicate that a tumor is likely to return. Solid tumors are typically undetected until they are advanced enough to be picked up by a medical image or physician examination. The detection of ctDNA at extremely low levels has the potential to provide crucial insights that may help discover cancer recurrence earlier and inform treatment decisions.