
Roy F. Chemaly MD
Professor of Medicine, University Tex MD Anderson Cnacer Center, Houston
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1515 Holcombe BlvdBox 402Houston, TX 77030
Phone+1 713-745-1116
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Summary
- Roy Chemaly, MD, MPH, CMQ. Professor. Chief Infection Control Officer and Director of the Clinical Virology Research program. Dr. Chemaly’s interest include studies on the epidemiology, severity, prognosis, prevention and treatment of respiratory viral infections in immunocompromised cancer patients as well in the prevention of health care associated infections. Dr. Chemaly conducts clinical trials for the management and prevention of viral infections in cancer patients, Hematopoietic Cell Transplant (HCT) recipients, in particular, as well as on the composition of the upper respiratory tract microbiome as a risk factor for lower respiratory tract infections. He is also conducting clinical trials using CMV specific immuno-assays to predict CMV reactivation or progression. In addition, Dr. Chemaly and his lab team are conducting studies on whole genome sequencing for VRE, phages, and CMV to establish the transmission networks and the resistance and virulence genes associated with worse outcomes, respectively. His work in viral infections in HCT recipients has led to landmark publications in high impact journals like New England Journal of Medicine, Annals of Internal Medicine, Blood, and Clinical Infectious Diseases. He is the founder and past chair of the Transplant Infectious Diseases Special Interest Group of the American Society of Bone Marrow Transplantation and a member of the writing committee of the ASBMT guidelines for transplant infectious diseases, and the European Committee for Infections in Leukemia (ECIL 8). He is the co-chair of the Infection & Immune Reconstitution Working Committee of the ASTCT/CIBMTR, an executive member on the council for the International Immunocompromised Host Society (ICHS), and the scientific officer for the working group on respiratory viruses (ESGREV) of the European Society for Clinical Microbiology and Infectious Diseases (ESCMID). Funding sources: NCI/NIH, NIH subcontracts, Private industry, Institutional Awards.
Education & Training
Cleveland Clinic FoundationFellowship, Infectious Disease, 1998 - 2001
Zucker School of Medicine at Hofstra/Northwell at Staten Island University HospitalResidency, Internal Medicine, 1994 - 1998
St Joseph's University Medical SchoolClass of 1992
Certifications & Licensure
FL State Medical License 2021 - Present
TX State Medical License 2002 - 2027
NY State Medical License 1997 - 2003
OH State Medical License 2000 - 2003
American Board of Internal Medicine Infectious Disease
American Board of Pathology Medical Microbiology
Awards, Honors, & Recognition
- CMS Meaningful Use Stage 1 Certification ClinicStation, UT MD Anderson Cancer Center, 2013, 2015
- Top Doctors:SE Texas Castle Connolly, 2013
Clinical Trials
- Intermittent Use of Aerosolized Ribavirin for Treatment of RSV Start of enrollment: 2003 Feb 01
- Cidofovir Instillation in Hematopoietic Stem Cell Transplant (HSCT) Recipients With Hemorrhagic Cystitis
- Respiratory Syncytial Virus - RSV Protocol Start of enrollment: 2011 Dec 28
Publications & Presentations
PubMed
- Late Cytomegalovirus Infections After Allogeneic Hematopoietic Cell Transplant.George L Chen, Roland Bassett, Rohtesh S Mehta, Betul Oran, Fareed Khawaja
American Journal of Hematology. 2026-05-13 - Clinical and genomic determinants associated with emergent ceftazidime-avibactam plus aztreonam non-susceptibility in ceftazidime-avibactam resistant.William C Shropshire, Jovan Borjan, Iris Y Fonseca, Kathlyn Pham, Melanie Guerrero
Antimicrobial Agents and Chemotherapy. 2026-05-06 - Clostridioides difficile infection in non-transplanted adults with haematological malignancy: Systematic review and meta-analysis on behalf of European Conference on I...Chiara Oltolini, Agnieszka Piekarska, Alessio Signori, Christine Robin, Dionysios Neofytos
Blood Reviews. 2026-04-30
Journal Articles
- The Ability of a Cytomegalovirus ELISPOT Assay to Predict Outcome of Low-Level CMV Reactivation in Hematopoietic Cell Transplant RecipientsRoy F Chemaly, Elizabeth Shpall, The Journal of Infectious Diseases
- Oral Versus Aerosolized Ribavirin for the Treatment of Respiratory Syncytial Virus Infections in Hematopoietic Cell Transplantation RecipientsSamuel L Aitken, Roy F Chemaly, Clinical Infectious Diseases
- Definitions of Resistant and Refractory Cytomegalovirus Infection and Disease in Transplant Recipients for Use in Clinical TrialsRoy F Chemaly, Kathleen M Mullane, Robin Avery, Raymund R Razonable, Clinical Infectious Diseases
Abstracts/Posters
- Third-Party BK Virus Specific Cytotoxic T Lymphocyte Therapy for Hemorrhagic Cystitis Following AllotransplantationRoy Chemaly, 61st Annual American Society of Hematology Meeting, Orlando, FL, 12/7/2019
Lectures
- Freesia Study Design: JNJ-53718678 in Hematopoietic Cell Transplant Recipients with Respiratory Syncytial Virus Infection of the Upper Respiratory Tract61st Annual American Society of Hematology Meeting - Orlando, FL - 12/7/2019
- A Systematic and Critical Review of Bacteriophage Therapy Against Multi-Drug Resistant ESKAPE Organisms in HumansThe University of Texas, M. D. Anderson Cancer Center, Houston, Texas - 9/4/2012
Press Mentions
6 Simple Ways to Boost Your Immune SystemDecember 9th, 2025
4 Questions About COVID-19 Vaccines and Bivalent Boosters, AnsweredSeptember 22nd, 2022
COVID-19’s BA.4 and BA.5 Omicron Subvariants: 12 Questions, AnsweredJuly 14th, 2022
Grant Support
- The interplay of the immune system, and microbiome in determining outcome of respiratory viral infections in hematopoietic cell transplant recipients and in patients with leukemiaUNIVERSITY OF TX MD ANDERSON CAN CTR2020–2025
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