• 5018 Citations
  • 34 h-Index
1993 …2020

Research output per year

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Fingerprint Dive into the research topics where Thomas A. Ullman is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

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  • Publications

    Association Between Indefinite Dysplasia and Advanced Neoplasia in Patients With Inflammatory Bowel Diseases Undergoing Surveillance

    Mahmoud, R., Shah, S. C., Torres, J., Castaneda, D., Glass, J., Elman, J., Kumar, A., Axelrad, J., Harpaz, N., Ullman, T., Colombel, J. F., Oldenburg, B. & Itzkowitz, S. H., Jun 2020, In : Clinical Gastroenterology and Hepatology. 18, 7, p. 1518-1527.e3

    Research output: Contribution to journalArticle

    Open Access
  • 2 Scopus citations

    Stopping Mesalamine Therapy in Patients With Crohn's Disease Starting Biologic Therapy Does Not Increase Risk of Adverse Outcomes

    Ungaro, R. C., Limketkai, B. N., Jensen, C. B., Yzet, C., Allin, K. H., Agrawal, M., Ullman, T., Burisch, J., Jess, T. & Colombel, J. F., May 2020, In : Clinical Gastroenterology and Hepatology. 18, 5, p. 1152-1160.e1

    Research output: Contribution to journalArticle

  • 3 Scopus citations

    Appropriate Therapeutic Drug Monitoring of Biologic Agents for Patients With Inflammatory Bowel Diseases

    Papamichael, K., Cheifetz, A. S., Melmed, G. Y., Irving, P. M., Vande Casteele, N., Kozuch, P. L., Raffals, L. E., Baidoo, L., Bressler, B., Devlin, S. M., Jones, J., Kaplan, G. G., Sparrow, M. P., Velayos, F. S., Ullman, T. & Siegel, C. A., Aug 2019, In : Clinical Gastroenterology and Hepatology. 17, 9, p. 1655-1668.e3

    Research output: Contribution to journalArticle

    Open Access
  • 21 Scopus citations

    Consecutive negative findings on colonoscopy during surveillance predict a low risk of advanced neoplasia in patients with inflammatory bowel disease with long-standing colitis: Results of a 15-year multicentre, multinational cohort study

    Ten Hove, J. R., Shah, S. C., Shaffer, S. R., Bernstein, C. N., Castaneda, D., Palmela, C., Mooiweer, E., Elman, J., Kumar, A., Glass, J., Axelrad, J., Ullman, T. A., Colombel, J. F., Torres, J., Van Bodegraven, A. A., Hoentjen, F., Jansen, J. M., De Jong, M. E., Mahmmod, N., Van Der Meulen-De Jong, A. E. & 4 others, Ponsioen, C. Y., Van Der Woude, C. J., Itzkowitz, S. H. & Oldenburg, B., Apr 1 2019, In : Gut. 68, 4, p. 615-622 8 p.

    Research output: Contribution to journalArticle

  • 7 Scopus citations

    Gut microbiota density influences host physiology and is shaped by host and microbial factors

    Contijoch, E. J., Britton, G. J., Yang, C., Mogno, I., Li, Z., Ng, R., Llewellyn, S. R., Hira, S., Johnson, C., Rabinowitz, K. M., Barkan, R., Dotan, I., Hirten, R. P., Fu, S. C., Luo, Y., Yang, N., Luong, T., Labrias, P. R., Lira, S., Peter, I. & 54 others, Grinspan, A., Clemente, J. C., Kosoy, R., Kim-Schulze, S., Qin, X., Castillo, A., Hurley, A., Atreja, A., Rogers, J., Fasihuddin, F., Saliaj, M., Nolan, A., Reyes-Mercedes, P., Rodriguez, C., Aly, S., Santa-Cruz, K., Peters, L., Suárez-Fariñas, M., Huang, R., Hao, K., Zhu, J., Zhang, B., Losic, B., Irizar, H., Song, W. M., Di Narzo, A., Wang, W., Cohen, B. L., DiMaio, C., Greenwald, D., Itzkowitz, S., Lucas, A., Marion, J., Maser, E., Ungaro, R., Naymagon, S., Novak, J., Shah, B., Ullman, T., Rubin, P., George, J., Legnani, P., Telesco, S. E., Friedman, J. R., Brodmerkel, C., Plevy, S., Cho, J. H., Colombel, J. F., Schadt, E. E., Argmann, C., Dubinsky, M., Kasarskis, A., Sands, B. & Faith, J. J., Jan 22 2019, In : eLife. 8, e40553.

    Research output: Contribution to journalArticle

    Open Access
  • 19 Scopus citations