Haig Kazazian

Haig Hagop Kazazian Jr. (July 30, 1937 – January 19/20, 2022) was an American professor in the Department of Genetic Medicine at Johns Hopkins University School of Medicine in Baltimore, Maryland. Kazazian was an elected member of the National Academy of Sciences and the American Academy of Arts and Sciences.

Kazazian determined the molecular basis of single-gene genetic disorders such as hemoglobinopathies and hemophilia and introduced prenatal diagnosis for such disorders. His group was the first to identify a disease-causing mutation resulting from jumping genes in humans. After this discovery, he focused on basic research into LINE retrotransposition in humans and its implications for disease.