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Daniel Quiat

M.D., Ph.D.

Attending, Department of Cardiology, Boston Children’s Hospital

Instructor in Pediatrics, Harvard Medical School

Dr. Daniel Quiat is a pediatric cardiologist at Boston Children’s Hospital and an Instructor of Pediatrics at Harvard Medical School. Dr. Quiat earned his MD and PhD in 2014 from the Medical Science Training Program (MSTP) at University of Texas Southwestern Medical Center. Dr. Quiat then completed both his residency and fellowship at Boston Children’s Hospital, where he is board certified in pediatrics and pediatric cardiology with specialties in pediatric cardiomyopathies and congenital heart defects. In addition to his clinical responsibilities, Dr. Quiat pursues biomedical research in cardiovascular development and genetics in collaboration with the Seidman Lab at Harvard Medical School Department of Genetics, with a goal of identifying genetic causes of single ventricle heart disease and illuminating the role of those genetic factors in the development of heart failure and other clinical outcomes.

Daniel Quiat

M.D., Ph.D.

Attending, Department of Cardiology, Boston Children’s Hospital

Instructor in Pediatrics, Harvard Medical School

Dr. Daniel Quiat is a pediatric cardiologist at Boston Children’s Hospital and an Instructor of Pediatrics at Harvard Medical School. Dr. Quiat earned his MD and PhD in 2014 from the Medical Science Training Program (MSTP) at University of Texas Southwestern Medical Center. Dr. Quiat then completed both his residency and fellowship at Boston Children’s Hospital, where he is board certified in pediatrics and pediatric cardiology with specialties in pediatric cardiomyopathies and congenital heart defects. In addition to his clinical responsibilities, Dr. Quiat pursues biomedical research in cardiovascular development and genetics in collaboration with the Seidman Lab at Harvard Medical School Department of Genetics, with a goal of identifying genetic causes of single ventricle heart disease and illuminating the role of those genetic factors in the development of heart failure and other clinical outcomes.

Recent Publications

Bleeding and Thromboembolic Events With Antiplatelet Agents in Pediatric Heart Disease-An Exploratory Study of the Role of Pharmacogenomics

Published On 2026 Jul 25

Journal article

CONCLUSIONS: Clinically important bleeding and TE events were common in pediatric cardiac patients on antiplatelets, with organ dysfunction, age, and physiology emerging as key associations. Pharmacogenomic variants were frequent; a candidate P2RY1 signal warrants validation. Pediatric antiplatelet management and relationships with outcomes are complex, supporting the need for prospective studies integrating pharmacogenomic variant analyses with standardized pharmacodynamic testing.


Structural variants in human congenital heart disease disrupt distal genomic regulatory contacts of developmental genes

Published On 2026 Mar 23

Journal article

remains challenging. To test the hypothesis that SVs from people with congenital heart disease (CHD) disrupt developmental chromatin interactions, we developed CardioAkita, a machine-learning model that predicts how variants alter 3D chromatin structure. Analyzing previously genotyped de novo SVs (dnSVs), we observed a positive association between CHD severity and CardioAkita scores across dozens of families. From whole-genome sequencing of three individuals with CHD we predicted disruptive...