H Franklin Bunn

H. Franklin Bunn(born July 7, 1935) is an American physician, hematologist and biochemist at Harvard Medical School, and an elected Fellow of the American Academy of Arts and Sciences He isknown for his discovery of glycated hemoglobin or hemoglobin A1c, a major diagnostic indicator of pre-diabetes and diabetes.

Bunn attended the Pingry School in Elizabeth, New Jersey. He received the AB degree from Harvard in 1957 majoring in chemistry and the MD from the University of Pennsylvania School of Medicine in 1961. After a medical residency atNew York Hospital, he completed a fellowship in hematology at the Thorndike Laboratory under the mentorship of James Jandl. 

Frank Bunn has been a Professor of Medicine at Harvard Medical School since 1979. From 1976 to 1982 he was Director of the Hematology Division at Brigham and Women’s Hospital, and from 1977 to 1989 he was an investigator of the Howard Hughes Medical Institute. During a nearly 50-year time span, Bunn played a major role in the training of medical students during their four years at Harvard Medical School, and residents and fellows at Brigham and Women's Hospital. From 1991 until 1998, he directed the Harvard-Markey Program in Biomedical Sciences that gives graduate students an additional year of training in human biology and the pathophysiology of disease.

The first 20 years of Bunn’s research focused on hemoglobin.  His major work included the demonstration that free hemoglobin in the circulating plasma is excreted by the kidney owing to the dissociation of the a2b2 tetramer into ab dimers, discovery of the hemoglobin binding site of the physiologically important modifier 2,3 bisphosphoglycerate, demonstration that surface charge determines the proportion of commonly encountered mutant hemoglobins in heterozygotes, discovery of the first example of a hemoglobin frame shift mutation, establishment of sequence dependent rules for the cleavage of the initiator methionine and N-acetylation, demonstration with Paul Gallop that the minor hemoglobin component HbA1c contains glucose attached to the N-terminus of the beta globin chain by a ketosamine linkage, providing the rationale for the measurement of HbA1c as an index of long-term control in diabetics with later work indicating that this glucose dependent modification is a likely contributor to the long-term complications of diabetes, identification of critical regulatory elements in the gene for erythropoietin (EPO), the hormone that regulates red blood cell formation, and of the oxygen-dependent domain of the HIFa transcription factor responsible for physiologic induction by hypoxia.

• 1997: “Letter in Life” Award from the Pingry School, 1997
• 1999: Elected Fellow of the American Academy of Arts and Sciences
• 2000: Stratton Medal from the American Society of Hematology
• 2009: Distinguished Graduate Alumni Scholar Award from the University of Pennsylvania School of Medicine
• 2009: Wallace H. Coulter Lifetime Achievement Award from the American Society of Hematology
• 2013: First recipient of Special Faculty Prize from Harvard Medical School for Sustained Excellence in Teaching

Burn has been married to Elizabeth Godard for over 50 years. They have 3 sons and 7 grandchildren, all boys.