@article {8713,
	title = {A System for Phenotype Harmonization in the NHLBI Trans-Omics for Precision Medicine (TOPMed) Program.},
	journal = {Am J Epidemiol},
	year = {2021},
	month = {2021 Apr 16},
	abstract = {<p>Genotype-phenotype association studies often combine phenotype data from multiple studies to increase power. Harmonization of the data usually requires substantial effort due to heterogeneity in phenotype definitions, study design, data collection procedures, and data set organization. Here we describe a centralized system for phenotype harmonization that includes input from phenotype domain and study experts, quality control, documentation, reproducible results, and data sharing mechanisms. This system was developed for the National Heart, Lung and Blood Institute{\textquoteright}s Trans-Omics for Precision Medicine program, which is generating genomic and other omics data for >80 studies with extensive phenotype data. To date, 63 phenotypes have been harmonized across thousands of participants from up to 17 studies per phenotype (participants recruited 1948-2012). We discuss challenges in this undertaking and how they were addressed. The harmonized phenotype data and associated documentation have been submitted to National Institutes of Health data repositories for controlled-access by the scientific community. We also provide materials to facilitate future harmonization efforts by the community, which include (1) the code used to generate the 63 harmonized phenotypes, enabling others to reproduce, modify or extend these harmonizations to additional studies; and (2) results of labeling thousands of phenotype variables with controlled vocabulary terms.</p>},
	issn = {1476-6256},
	doi = {10.1093/aje/kwab115},
	author = {Stilp, Adrienne M and Emery, Leslie S and Broome, Jai G and Buth, Erin J and Khan, Alyna T and Laurie, Cecelia A and Wang, Fei Fei and Wong, Quenna and Chen, Dongquan and D{\textquoteright}Augustine, Catherine M and Heard-Costa, Nancy L and Hohensee, Chancellor R and Johnson, William Craig and Juarez, Lucia D and Liu, Jingmin and Mutalik, Karen M and Raffield, Laura M and Wiggins, Kerri L and de Vries, Paul S and Kelly, Tanika N and Kooperberg, Charles and Natarajan, Pradeep and Peloso, Gina M and Peyser, Patricia A and Reiner, Alex P and Arnett, Donna K and Aslibekyan, Stella and Barnes, Kathleen C and Bielak, Lawrence F and Bis, Joshua C and Cade, Brian E and Chen, Ming-Huei and Correa, Adolfo and Cupples, L Adrienne and de Andrade, Mariza and Ellinor, Patrick T and Fornage, Myriam and Franceschini, Nora and Gan, Weiniu and Ganesh, Santhi K and Graffelman, Jan and Grove, Megan L and Guo, Xiuqing and Hawley, Nicola L and Hsu, Wan-Ling and Jackson, Rebecca D and Jaquish, Cashell E and Johnson, Andrew D and Kardia, Sharon L R and Kelly, Shannon and Lee, Jiwon and Mathias, Rasika A and McGarvey, Stephen T and Mitchell, Braxton D and Montasser, May E and Morrison, Alanna C and North, Kari E and Nouraie, Seyed Mehdi and Oelsner, Elizabeth C and Pankratz, Nathan and Rich, Stephen S and Rotter, Jerome I and Smith, Jennifer A and Taylor, Kent D and Vasan, Ramachandran S and Weeks, Daniel E and Weiss, Scott T and Wilson, Carla G and Yanek, Lisa R and Psaty, Bruce M and Heckbert, Susan R and Laurie, Cathy C}
}
