Adam Christian Naj, PhD

faculty photo
Associate Professor of Epidemiology in Biostatistics and Epidemiology at the Hospital of the University of Pennsylvania
Senior Scholar, Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine
Department: Biostatistics and Epidemiology

Contact information
921 Blockley Hall
423 Guardian Drive
Philadelphia, PA 19104
Office: (215) 746-4180
Fax: (215) 573-1050
Lab: (215) 746-4180
Education:
BA (Biology (Genetics)/Psychology)
University of Chicago, 2000.
PhD (Epidemiology (Human Genetics))
The Johns Hopkins University Bloomberg School of Public Health, 2008.
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Description of Research Expertise

Dr. Naj is an Assistant Professor of Epidemiology in the Department of Biostatistics, Epidemiology, and Informatics, and the Department of Pathology and Laboratory Medicine at the University of Pennsylvania Perelman School of Medicine. His research focuses primarily on the genetics of Alzheimer’s Disease (AD) and neurodegeneration, including his genome-wide association analyses in the Alzheimer’s Disease Genetics Consortium (ADGC) which resulted in a first-author paper that was the most cited Alzheimer’s study of 2011. Joining Penn in 2012, Dr. Naj has extended his roles in analysis and data management in the ADGC, and has been actively co-leading quality control and case-control analysis working groups in the Alzheimer’s Disease Sequencing Project (ADSP), which has collected data on nearly 600 whole genomes and more than 10,500 whole exomes of AD cases and controls to identify rare risk-increasing and protective genomic variants contributing to AD. Of late his work has included guiding development of a quality control pipeline for next-generation sequence data as part of the Genomic Center on Alzheimer’s Disease (GCAD). Dr. Naj is also one of several Penn co-founders and organizers of the annual Symposium on Advances in Genetic Epidemiology and Statistics (SAGES), promoting the development of methods to analyze genomic datasets. He has recently expanded his research portfolio to include studies examining genetic loci contributing to multiple neurodegenerative diseases and phenotypes including AD, Parkinson’s disease, and progressive supranuclear palsy, among others, aspiring to identify key genetic contributors to the pathologies underlying neurodgeneration.

Selected Publications

Bledsoe X, Wang TC, Wu Y, Archer D, Chen HH, Naj AC, Bush WS, Hohman TJ, Dumitrescu L, Below JE, Gamazon ER.: Neuroimaging PheWAS and molecular phenotyping implicate PSMC3 in Alzheimer's disease. Alzheimer's & Dementia February 2026.

Durant A, Mukherjee S, Lee ML, Choi SE, Scollard P, Klinedinst BS, Trittschuh EH, Mez J, Farrer LA, Gifford KA, Cruchaga C, Hassenstab J, Naj AC, Wang LS, Johnson SC, Engelman CD, Kukull WA, Keene CD, Saykin AJ, Cuccaro ML, Kunkle BW, Pericak-Vance MA, Martin ER, Bennett DA, Barnes LL, Schneider JA, Bush WS, Haines JL, Mayeux R, Vardarajan BN, Albert MS, Thompson PM, Jefferson AL; Alzheimer's Disease Neuroimaging Initiative (ADNI)*Alzheimer's Disease Genetics Consortium (ADGC)The Alzheimer's Disease Sequencing Project (ADSP); Crane PK, Dumitrescu L, Archer DB, Hohman TJ, Gaynor LS.: Evaluating the association of apolipoprotein E genotype and cognitive resilience in SuperAgers. Alzheimer's & Dementia February 2026.

Li YJ, La JO, Naj A, Martin ER.: Leveraging genetic propensity to identify modifiable factors for the age at onset of Alzheimer's disease. Alzheimer's & Dementia February 2026.

Contreras AG, Walters S, Eissman JM, Archer DB, Regelson AN, Durant A, Clifton M, Mukherjee S, Lee ML, Choi SE, Scollard P, Trittschuh EH, Mez J, Bush WS, Kunkle BW, Cruchaga C, Naj AC, Gifford KA, Bilgel M, Kuzma AB; Alzheimer’s Disease Neuroimaging Initiative (ADNI); Alzheimer’s Disease Genetics Consortium (ADGC); Alzheimer’s Disease Sequencing Project (ADSP); Cuccaro ML, Pericak-Vance MA, Farrer LA, Wang LS, Schellenberg GD, Haines JL, Jefferson AL, Kukull WA, Keene CD, Saykin AJ, Thompson PM, Martin ER, Albert MS, Johnson SC, Engelman CD, Ferrucci L, Bennett DA, Barnes LL, Schneider JA, Sperling RA, Resnick SM, Crane PK, Dumitrescu L, Hohman TJ.: Genetic modifiers of APOE-ε4-associated cognitive decline. Nature Communications February 2026.

Jin Y, Wang H, Naj AC, Wang LS, Lee WP.: GrafAnc: Reliable and reproducible inference of continental and regional population structure. HGG Advances 7: 100530, January 2026.

Wang D, Abbruzzese S, Heard-Costa N, Rampersaud A, Martin E, Naj A, Akgun B, Kunkle B, Seshadri S, Peloso G; Alzheimer's Disease Neuroimaging Initiative; Alzheimer's Disease Sequencing Project; DeStefano AL, Li Z, Li X, Choi SH.: Application of the STAAR framework in detecting rare variant associations with Alzheimer disease and related dementias: Insights and implications. HGG Advances 7: 100574, January 2026.

Durodoye RO, Ciesielski TH, Benchek P, Bartlett J, Zhu X, Liu S, Naj A, Kunkle B, Schellenberg GD, Mayeux R, Farrer L, Wang LS, Pericak-Vance MA, Rajabli F, Tosto G, Haines JL, Bush WS, Williams SM.: Deviations from additivity in APOE4-mediated late-onset Alzheimer's disease risk across races and ethnicities. Human Genetics 145: 16, January 2026.

Cholerton B, Godrich D, Pasteris J, Rivero J, Martin ER, Kunkle BW, Naj AC, Hamilton-Nelson KL, Wang H, Lee WP, Dumitrescu L, Hohman TJ, Mayeux R, Larson EB, Crane PK, Keene CD, Latimer CS, Mukherjee S, Kofler JK, Kamboh MI, Bennett DA, Molina-Porcel L, Cuccaro M, Pericak-Vance MA, Rundek T, Scott WK, Kukull W, Schellenberg G; Alzheimer’s Disease Genetics Consortium; Beecham GW, Montine TJ.: Genome wide association study meta-analysis of neuropathologic lesions of Alzheimer's disease and related dementias in a multi-site autopsy cohort. medRxiv January 2026.

Rast JE, Rosso AL, James BD, Underwood JFG, Bergstedt J, Ahlqvist VH, Grove J, Fang F, Goldstein ND, Vivanti G, Levine SZ, Nordström A, Schendel D, Lyall K, Nordström P, Ballin M, Stafford J, Naj AC, Lee BK; LEGENNDS Consortium.: Association of neurodevelopmental conditions with Alzheimer's disease and related dementias and Parkinson's disease. Journal of Gerontology Series A: Biological Sciences and Medical Sciences December 2025.

Andersen OM, de Waal MWJ, Monti G, Tesi N, Jensen AMG, de Geus C, van Spaendonk R, Vogel M, Ahmad S, Amin N, Amouyel P, Beecham GW, Bellenguez C, Berr C, Bis JC, Boland A, Bossù P, Bouwman F, Bras J, Charbonnier C, Clarimon J, Cruchaga C, Daniele A, Dartigues JF, Debette S, Deleuze JF, Denning N, DeStefano AL, Dols-Icardo O, van Duijn CM, Farrer LA, Fernández MV, van der Flier WM, Fox NC, Galimberti D, Genin E, Gille JJP, Grenier-Boley B, Grozeva D, Guen YL, Guerreiro R, Haines JL, Holmes C, Hummerich H, Arfan Ikram M, Kamran Ikram M, Kawalia A, Kraaij R, Lambert JC, Lathrop M, Lemstra AW, Lleó A, Myers RM, Mannens MMAM, Marshall R, Martin ER, Masullo C, Mayeux R, Mead S, Mecocci P, Meggy A, Mol MO, Nacmias B, Naj AC, Napolioni V, Nicholas Cochran J, Nicolas G, Pasquier F, Pastor P, Pericak-Vance MA, Pijnenburg YAL, Piras F, Quenez O, Ramirez A, Raybould R, Redon R, Reinders MJT, Richard AC, Riedel-Heller SG, Rivadeneira F, van Rooij JGJ, Rousseau S, Ryan NS, Sanchez-Juan P, Schellenberg GD, Scheltens P, Schott JM, Seshadri S, Sie D, Sims R, Sistermans EA, Sorbi S, van Swieten JC, Tijms B, Uitterlinden AG, Visser PJ, Wagner M, Wallon D, Wang LS, Williams J, et al.: Domain mapping of disease mutations reveals pathogenic SORL1 variants in Alzheimer's disease. Molecular Neurodegeneration 20: 122, December 2025.

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Last updated: 03/13/2026
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