Biotia
Dr. Dorottya Nagy-Szakal
Author

Dr. Dorottya Nagy-Szakal, MD, PhD

Chief Medical Officer
Areas of expertise

Clinical metagenomics • Translational medicine • Urinary tract infections • Joint infections • Microbiome research • NGS diagnostics • Antimicrobial resistance • FDA regulatory strategy

Dr. Dorottya Nagy-Szakal is the Chief Medical Officer of Biotia, where she oversees clinical operations, medical affairs, and regulatory strategy for the company's metagenomic infectious disease diagnostics.

About

About Dr. Dorottya Nagy-Szakal

Dr. Dorottya Nagy-Szakal is the Chief Medical Officer of Biotia, where she oversees clinical operations, medical affairs, laboratory leadership, and strategic communications with regulatory bodies including the FDA and CDC. She brings more than 15 years of experience in translational medicine and clinical microbiology, with deep expertise in clinical metagenomics for urine, joint fluid, and other challenging infections using next-generation sequencing technologies.

Before joining Biotia, Dr. Nagy-Szakal led clinical research on fecal microbiota transplantation, the gut-brain axis, multi-omics of complex disease, and COVID-19 diagnostics and therapeutics. She has authored more than 30 peer-reviewed articles in high-impact journals including JAMA, Nature Communications, Cell, mBio, and Scientific Reports, as well as multiple book chapters.

Dr. Nagy-Szakal earned her MD and PhD in clinical medicine from Semmelweis University of Medicine in Budapest, Hungary. She completed postdoctoral fellowships at Baylor College of Medicine / Texas Children's Hospital and Columbia University Medical Center. She currently serves as a research assistant professor at SUNY Downstate Health Sciences University.

Credentials & education

Education

  • MD, Semmelweis University of Medicine, Budapest, Hungary
  • PhD in Clinical Medicine, Semmelweis University of Medicine, Budapest, Hungary
  • Postdoctoral Fellowship, Baylor College of Medicine / Texas Children's Hospital
  • Postdoctoral Fellowship, Columbia University Medical Center
Affiliations & societies

Affiliations

  • SUNY Downstate Health Sciences University (Research Assistant Professor)
  • Baylor College of Medicine / Texas Children's Hospital (former postdoc)
  • Columbia University Medical Center (former postdoc)
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Publications and Blogs from Dr. Dorottya Nagy-Szakal

Selected publications

PUBLICATION2026
Microbiol Spectr

Analytical validation of a highly accurate and reliable next-generation sequencing-based urine assay.

Couto-Rodriguez M, Danko DC, Wells HL, Rey S, Jirau Serrano X, Fidler G, Papciak J, Combs PF, Plourde A, Augenbraun M, Mason CE, Otto C, O'Hara NB, Nagy-Szakal D.
Read publicationDOI: 10.1128/spectrum.02026-25
PUBLICATION2026
mBio

Autologous fecal microbiota transplantation restores the infant gut microbiome and metabolome after antibiotics: a case report.

Sun H, Dulencin A, Kirn TJ, Vo J, Liachko I, Rao D, Manzano-Santana J, Patel E, Looi C, Horton DB, Barrett E, Weidner M, Bachmann G, Panettieri RA Jr, Connor BA, Rogova M, Nagy-Szakal D, Couto-Rodriguez M, Kotwal S, Wu Q, Simon J, Blaser MJ, Dominguez Bello MG.
Read publicationDOI: 10.1128/mbio.00711-26
PUBLICATION2026
Front Cell Infect Microbiol

Analytical validation of a metagenomic next-generation diagnostic platform for urinary tract infection in a Thai tertiary hospital setting: a BI-Biotia UTI cohort study.

Wangprapa P, Nagy-Szakal D, Wells HL, Fidler G, Sangtian M, Panmontha W, Bunlungsup S, Techasathit W, Couto-Rodriguez M, Danko DC, Mason CE, O'Hara NB, Sriswasdi S, Viangteeravat T.
Read publicationDOI: 10.3389/fcimb.2026.1751074
PUBLICATION2025
Pediatr Res

Mucosal disease activity may predict response to fecal microbiota transplantation in patients with ulcerative colitis.

Kellermayer R, Nagy-Szakal D, Ihekweazu FD, Luna RA, Versalovic J.
Read publicationDOI: 10.1038/s41390-025-04120-y
PUBLICATION2025
Open Forum Infectious Diseases

Potential Application of a Clinical-Grade Next Generation Sequencing Assay for Detection of Bacterial Vaginosis Associated Organisms in Urine.

Couto-Rodriguez M, Rey S, Wells HL, Morfa Romero EJ, Plourde A, Augenbraun M, Rivera T, Jirau Serrano XO, Papciak JC, Otto C, Danko DC, Mason CE, O'Hara NB, Nagy-Szakal D.
PUBLICATION2025
Open Forum Infectious Diseases

Comprehensive Next-Generation Sequencing-Based Assay for Antimicrobial Resistance Gene Marker Identification in Urine.

Fidler G, Couto-Rodriguez M, Jirau Serrano XO, Wells HL, Rey S, Morfa Romero EJ, Plourde A, Augenbraun M, Rivera T, Papciak JC, Combs PF, Otto C, Mason CE, O'Hara NB, Nagy-Szakal D, Danko DC.
PUBLICATION2022
JAMA Netw Open

Comparative Effectiveness of Single vs Repeated Rapid SARS-CoV-2 Antigen Testing Among Asymptomatic Individuals in a Workplace Setting.

Connor BA, Rogova M, Garcia J, Patel D, Couto-Rodriguez M, Nagy-Szakal D, Rendel M.
Read publicationDOI: 10.1001/jamanetworkopen.2022.3073
PUBLICATION2022
J Pediatr Gastroenterol Nutr

Fecal Microbiota Transplantation Commonly Failed in Children With Co-Morbidities.

Kellermayer R, Wu Q, Nagy-Szakal D, Queliza K, Ihekweazu FD, Bocchini CE, Magee AR, Oezguen N, Spinler JK, Hollister EB, Shulman RJ, Versalovic J, Luna RA, Savidge TC.
Read publicationDOI: 10.1097/MPG.0000000000003336
PUBLICATION2021
Microbiol Spectr

Targeted Hybridization Capture of SARS-CoV-2 and Metagenomics Enables Genetic Variant Discovery and Nasal Microbiome Insights.

Nagy-Szakal D, Couto-Rodriguez M, Wells HL, Barrows JE, Debieu M, Butcher K, Chen S, Berki A, Hager C, Boorstein RJ, Taylor MK, Jonsson CB, Mason CE, O'Hara NB.
Read publicationDOI: 10.1128/Spectrum.00197-21
PUBLICATION2018
Sci Rep

Insights into myalgic encephalomyelitis/chronic fatigue syndrome phenotypes through comprehensive metabolomics.

Nagy-Szakal D, Barupal DK, Lee B, Che X, Williams BL, Kahn EJR, Ukaigwe JE, Bateman L, Klimas NG, Komaroff AL, Levine S, Montoya JG, Peterson DL, Levin B, Hornig M, Fiehn O, Lipkin WI.
Read publicationDOI: 10.1038/s41598-018-28477-9
PUBLICATION2017
Microbiome

Fecal metagenomic profiles in subgroups of patients with myalgic encephalomyelitis/chronic fatigue syndrome.

Nagy-Szakal D, Williams BL, Mishra N, Che X, Lee B, Bateman L, Klimas NG, Komaroff AL, Levine S, Montoya JG, Peterson DL, Ramanan D, Jain K, Eddy ML, Hornig M, Lipkin WI.
Read publicationDOI: 10.1186/s40168-017-0261-y
PUBLICATION2023
Open Forum Infectious Diseases

Utilization of Clinical-Grade Metagenomics in Urinary Tract Infection Diagnostics: Improving High-Risk Patients' Outcomes with a Genomic-Based Assay.

Morfa Romero EJ, Augenbraun M, Rivera T, Rey S, Jirau Serrano XO, Papciak JC, Patel SS, Harrison B, Plourde A, Otto C, Mason C, Wells HL, Danko DC, O'Hara NB, Couto-Rodriguez M, Nagy-Szakal D.
PUBLICATION2015
Am J Gastroenterol

Serial fecal microbiota transplantation alters mucosal gene expression in pediatric ulcerative colitis.

Kellermayer R, Nagy-Szakal D, Harris RA, Luna RA, Pitashny M, Schady D, Mir SA, Lopez ME, Gilger MA, Belmont J, Hollister EB, Versalovic J.
Read publicationDOI: 10.1038/ajg.2015.19
PUBLICATION2014
Nutrition-Infection Interaction and Impacts on Human Health

The Gut Microbiome in the Nutrition-Infection Interaction: A Focus on Malnourished Children.

Nagy-Szakal D, et al.
PUBLICATION2012
Celiac Disease - From Pathophysiology to Advanced Therapies

Mucosal expression of claudins in celiac disease.

Nagy-Szakal D, et al.
PUBLICATION2011
Gut Microbes

The remarkable capacity for gut microbial and host interactions.

Nagy-Szakal D, Kellermayer R.
Read publicationDOI: 10.4161/gmic.2.3.16107

Blog posts