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Translational Biology & Molecular Medicine

Houston, Texas

Benchtop, Research, Bedside and Application
Translational Biology & Molecular Medicine Graduate Program
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Alumni Profile: Geoffrey Preidis, M.D., Ph.D.

Geoffrey Preidis

Department of Pathology and Immunology

Thesis Title: Mechanisms of Probiosis by Lactobacillus reuteri in Acute Rotaviral Gastroenteritis

Basic Science Mentor: James Versalovic, M.D., Ph.D.
Department of Pathology and Immunology

Clinical Science Mentor: Mark W. Kline, M.D.
Department of Pediatrics

Position after graduation

Baylor College of Medicine Pediatric Residency Program


  • M.D., Baylor College of Medicine, 2012
  • Ph.D., Translational Biology and Molecular Medicine, Baylor College of Medicine, 2011
  • B.A., Physics, Harvard University

Position after graduation: Return to medical school to complete MD/PhD program.

Awards and Honors

  • The Ralph D. Feigin, M.D., Medical Student Excellence in Pediatrics Award, Baylor College of Medicine, 2012
  • Certificate of Completion, International Health Track, Baylor College of Medicine, 2012
  • Certificate of Completion, Care of the Underserved Track, Baylor College of Medicine, 2012
  • Publication Award, Medical Scientist Training Program, Baylor College of Medicine, 2012
  • Faculty of 1000 Selection, Probiotics Stimulate Enterocyte Migration and Microbial Diversity in the Neonatal Mouse Intestine, 2012
  • Houston Livestock Show and Rodeo BRASS Community Service Scholar of the Year Award, 2011
  • Richard R. Dickason, Jr., M.D., Ph.D., Outstanding Physician-Scientist Award, Baylor College of Medicine, 2011-2012
  • Houston Livestock Show and Rodeo BRASS Community Service Scholar of the Year Award, 2011
  • Second Place Poster Presentation, UNC-Chapel Hill Translational Medicine Symposium, 2010
  • S. E. Sulkin Award, First Place Oral Presentation, Texas Branch American Society for Microbiology Annual Meeting, 2009
  • John R. Kelsey, Jr., Student Speaker Award, Baylor College of Medicine Graduate School of Biomedical Sciences Graduate Student Symposium, 2009
  • Third Place Oral Presentation, Baylor College of Medicine Interdepartmental Program in Translational Biology and Molecular Medicine Conference, 2009
  • Dean's Award for Excellence, Graduate School of Biomedical Sciences, Baylor College of Medicine, 2009-present
  • Ruth L. Kirschstein National Research Service Award for Individual Predoctoral MD/PhD Fellows (F30), National Institute of Diabetes and Digestive and Kidney Diseases, 2009-present
  • American Gastroenterological Association Institute Travel Scholarship, 2009
  • K. Patricia Cross Future Leaders Award, Association of American Colleges and Universities, 2009
  • Sam Kaplan Award, First Place Poster Presentation, Texas Branch American Society for Microbiology, 2008
  • Student Research Award Winner, Public Health Education and Health Promotion Section, American Public Health Association (APHA) 136th Annual Meeting and Exposition, 2008
  • Global Health Technologies Teaching Fellowship, Rice University, 2007-present
  • Matthew Carter Memorial Service Award, Baylor College of Medicine, 2006
  • Baylor Research Advocates for Student Scientists (BRASS) Scholar, 2006-present
  • Howard Hughes Medical Institute Fellow, 2006
  • Outstanding New Leader Award, Houston Outreach Medical and Education Services (HOMES) Clinic, 2006
  • Honorable Mention Essay, BCM History of Medicine Society, for AIDS, Human Rights, and the Plight of the Poor: Responses to the Pandemic in Haiti and Cuba in the 1980s, Baylor College of Medicine, 2005
  • Student Leadership in Community Service (SliCS) Award for Raising HIV/AIDS Awareness in a High-Risk Area (Rural Haiti), Baylor College of Medicine, 2005
  • Caskey Scholar, Baylor College of Medicine, 2004
  • Medical Scientist Training Program appointment, Baylor College of Medicine, 2004


  • Kim MH, Ahmed S, Buck WC, Preidis GA, Hosseinipour MC, Bhalakia A, Nanthuru D, Kazembe PN, Chimbwandira F, Giordano TP, Chiao EY, Schutze GE, Kline MW. The Tingathe program: a pilot intervention using community health workers to create a continuum of care in the Prevention of Mother to Child Transmission of HIV (PMTCT) cascade of services in Malawi. Journal of the International AIDS Society 2012; 15(4):1-11.
  • Preidis GA, Saulnier DM, Blutt SE, Mistretta TA, Riehle KP, Major AM, Venable SF, Barrish JP, Finegold MJ, Petrosino JF, Guerrant RL, Conner ME, Versalovic J. Host response to probiotics determined by nutritional status of rotavirus-infected mice. Journal of Pediatric Gastroenterology and Nutrition 2012; 55(3):299-307.
  • Preidis GA, Saulnier DM, Blutt SE, Mistretta TA, Riehle KP, Major AM, Finegold MJ, Petrosino JF, Conner ME, Versalovic J. Probiotics stimulate enterocyte migration and proliferation while increasing intestinal microbiome diversity in neonatal mice. The FASEB Journal 2012;26(5):1960-9.
  • Preidis GA, McCollum ED, Mwansambo C, Kazembe PN, Schutze GE, Kline MW. Pneumonia and malnutrition are highly predictive of mortality among African children hospitalized with HIV-infection and HIV-exposure in the era of antiretroviral therapy. Journal of Pediatrics. 2011;159:484-9.
  • McCollum ED, Preidis GA, Golitko C, Siwande LD, Mwansambo C, Kazembe PN, Hosseinipour MC, Schutze GE, Kline MW. Routine inpatient testing system increases access to pediatric HIV care in Malawi. Pediatric Infectious Disease Journal. 2011;30(5): e75-e81.
  • Thomas CM, Preidis GA, Versalovic J. Mechanisms of immune enhancement by beneficial microbes and probiotics. Old Herborn University Seminar Monographs. 2011;24:83-94.
  • Preidis GA, Hill C, Guerrant RL, Ramakrishna BS, Tannock GW, Versalovic J. Probiotics, enteric and diarrheal diseases, and global health. Gastroenterology. 2011;140(1):8-14.
  • Preidis GA, Shapiro CD, Pierre I, Dyer MJ, Kozinetz CA, Grimes RM. An effective, low-cost approach to implementing HIV/AIDS education programs in low literacy populations: an example from rural Haiti. Journal of Health Care for the Poor and Underserved. 2010. 21(2):430-7.
  • McCollum ED, Preidis GA, Kabue MM, Singogo EBM, Mwansambo C, Kazembe PN, Kline MW. Provider initiated testing and counseling: an inpatient pediatric model utilizing task shifting in Lilongwe, Malawi. PLoS ONE. 2010. 5(3):e9626.
  • Preidis GA, Versalovic J. Targeting the human microbiome with antibiotics, probiotics, and prebiotics: gastroenterology enters the metagenomics era. Gastroenterology. 2009.136(6):2015-31.
  • Preidis GA, Huang H-C, Lewis DE, Castellanos-Gonzalez A, Rogers KA, Ward HD, White AC. Seropositive human subjects produce interferon gamma afterstimulation with recombinant Cryptosporidium hominis gp15. Amer J Tropical Medicine and Hygiene. 2007. 77(3):583-5.

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