Author

Kaitlyn E. Barrack

Dartmouth CollegeORCID 0000-0001-7152-8564Unclaimed ORCID profile · follow to get notified of new preprints

Biology Disciplines

Click to filter author papers

Signature Assays, Organisms & Methods

Click to filter · or open tag

Research Focus:cell type annotation· 2 Approach:experimental assay· 2 Organism:human· 2 Assay:metagenomics· 2 Assay:bulk RNA-seq· 1 Research Focus:differential expression· 1 Research Focus:host-pathogen & immune response· 1 Organism:mouse· 1

Frequent Co-Authors

George A. O’TooleiD· 3 shared Rebecca A. VallsiD· 3 shared Sarvesh V. SurveiD· 3 shared Antonia Karine Silva BezerraiD· 1 shared Caitlin E. MurphyiD· 1 shared Emily P. BalskusiD· 1 shared James B. BliskaiD· 1 shared Julie L. SanvilleiD· 1 shared

Activity by Year

2026-2026 · peak 3/yr

Co-Author Collaboration Network

10 top collaborators · 34 mutual co-author links

Click any collaborator node to inspect or filter shared papers

Focal author (center)Selected co-authorORCID co-authorUnlinked name

Curved chords = mutual co-authorship

3 shared papersMicrobiology

George A. O’TooleORCID

Mutual co-authors in cluster

Author profile →

3 papers

Recent·Most cited

A genotoxin associated with colorectal cancer linked to gut dysbiosis in children with cystic fibrosis

Kaitlyn E. Barrack, Sarvesh V. Surve, Antonia Karine Silva Bezerra, Caitlin E. Murphy, Shannon M. Soucy, Miguel A. Aguilar Ramos, Rebecca A. Valls, Rebekah D. Ruff, Emily P. Balskus, Julie L. Sanville, Juliette C. Madan, George A. O’Toole

This study investigates microbial dysbiosis in children with cystic fibrosis, identifying glycerol as a driver of altered microbial competition and linking colibactin production to increased colorectal cancer risk.

Journal of Bacteriology · Jun 9, 2026Peer-reviewedMicrobiology

Sex and regional effects of Bacteroides in the gut

Rebecca A. Valls, Kaitlyn E. Barrack, Sarvesh V. Surve, James B. Bliska, George A. O’Toole

This study examines how Bacteroides colonization affects gut and systemic health in mice, revealing sex-dependent immune responses and macrophage marker changes in specific gut regions.

mBio · May 6, 2026Peer-reviewedMicrobiology

The Regional Landscape of the Human Colon Culturome in Health and Cystic Fibrosis

Sarvesh V. Surve, Rebecca A. Valls, Kaitlyn E. Barrack, Lorraine L. Gwilt, T B Gardner, George A. O’Toole

This study uses culturomics to analyze gut microbiota in CF and non-CF individuals, finding higher bacterial loads and spatially specific dysbiosis in CF mucosal samples.

Microbiology Spectrum · Feb 27, 2026Peer-reviewedMicrobiology