Landmarks in genetics through philately: Down syndrome

Down syndrome (DS) is one of the most common chromosomal disorders; however, the molecular pathogenesis and cause remains elusive. Many advances have been made in pre‐natal screening and detection, but there have been few real advances in the primary prevention or treatment of DS. DS individuals have been depicted on several philatelic materials; we present some of these stamps and philatelic covers, as well as other complementary stamps, as a means to illustrate issues relevant to this disorder.