Genetic mutations can be hereditary, when parents pass them down to their children, or they may occur.. Distal duplication 18q syndrome (also known as distal trisomy 18q) is a rare chromosomal disorder caused by the duplication of the distal (far end) portion of the long arm of.
[1] the deletion involves the distal section of 18q and typically extends to the tip of.. If you or a loved one is affected by this condition, visit nord to find.