Hans Tomas Bjornsson

Assistant Professor
Pediatrics - Genetics
Johns Hopkins University
United States of America

Doctor Pediatrics
Biography

Dr. Hans Tomas Bjornsson is an assistant professor of pediatrics and genetics at the Johns Hopkins University School of Medicine. His areas of clinical expertise include clinical genetics and pediatrics. He is a faculty member in the McKusick-Nathans Institute of Genetic Medicine. Dr. Bjornsson serves as the director of the Epigenetic and Chromatin Clinic and assistant program director of Clinical Genetics. He earned his M.D. from the University of Iceland and his Ph.D. from Johns Hopkins. He completed a combined pediatrics and medical genetics residency program at Johns Hopkins. Dr. Bjornsson’s research focuses on exploring the epigenomic impact of various Mendelian disorders of the epigenetic machinery. He is also interested in epigenetic-based therapeutic development with focus on developing therapies for Mendelian disorders of the histone machinery and imprinting disorders. Dr. Bjornsson serves on the faculty of the Medical Scientist Training/MD-PhD Program. In 2013, he receive an Early Independence Award from the National Institutes of Health, a prestigious grant that gives promising junior scientists the opportunity to skip traditional post-doctoral training and move directly into independent research roles. He is a member of the American Academy of Pediatrics and the American Society of Human Genetics.

Research Intrest

Epigenetics; Kabuki syndrome; Rubinstein-Taybi syndrome; Mendelian Disorders of the Histone Machinery

List of Publications
Bjornsson HT, Sigurdsson MI, Fallin MD, Irizarry RA, Aspelund T, Cui H, Yu W, Rongione MA, Ekstrm TJ, Harris TB, Launer LJ, Eiriksdottir G, Leppert MF, Sapienza C, Gudnason V, Feinberg AP. Intra-individual change over time in DNA methylation with familial clustering. JAMA. 2008 Jun 25;299(24):2877-83.
Wen B, Wu H, Bjornsson H, Green RD, Irizarry R, Feinberg AP. Overlapping euchromatin/heterochromatin- associated marks are enriched in imprinted gene regions and predict allele-specific modification. Genome Res. 2008 Nov;18(11):1806-13. Epub 2008 Oct 10.
Sigurdsson MI, Smith AV, Bjornsson HT, Jonsson JJ. HapMap methylation-associated SNPs, markers of germline DNA methylation, positively correlate with regional levels of human meiotic recombination. Genome Res. 2009 Feb 20.