Baylor College of Medicine

Joud Hajjar, M.D., PhD, M.S.

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Hajjar

Joud Hajjar, M.D., PhD, M.S.

Associate Professor

Phone

832-824-1319

Positions

Associate Professor: Medicine-Immun, Allergy & Rheum
Baylor College of Medicine
Houston, TX US

Service Chief, adult allergy and immunology: Pediatrics
Texas Children's Hospital

Faculty: The Center of Human Immunobiology

Addresses

6701 Fannin Street (Clinic)
: 9th floor
Houston, TX 77030
United States
Phone: (832) 824-1319
joud.hajjar@bcm.edu

Education

MS from Baylor College of Medicine: 07/2017 - Houston, Texas United States; Clinical Investigations

Fellowship at Virginia Commonwealth University: 07/2013 - Richmonad, United States; Allergy and Immunology

Fellowship at M. D. Anderson Cancer Center: 06/2011 - Houston, United States; Hospice and Palliative Care

Residency at American University of Beirut: 06/2007 - Beirut, Lebanon; Internal Medicine

Residency at Indiana University: 06/2010 - Indianapolis, United States; Internal Medicine

Internship at Indiana University: 06/2008 - Indianapolis, United States; Internal Medicine

MD from University of Alleppo: 01/2004 - Aleppo, Syria

PhD from Baylor College of Medicine: 01/2023 - Houston

Honors & Awards

Norton Rose Fulbright Faculty Excellence Award, 2020

TX Top Docs, 2020

Castle Connolly’s Top Doctors for 2020

Castle Connolly’s Exceptional Women in Medicine for 2019

Castle Connolly’s Top Doctors for 2019

TX TopDocs 2019

Castle Connolly’s Exceptional Women in Medicine for 2020

Professional Interests

Primary Immunodeficiency

Professional Statement

Dr. Hajjar’s research is focused on the interplay of the microbiome and immune dysregulation in the antibody deficient host.

Websites

VIICTR Publications List

Immunology, Allergy & Retrovirology

Selected Publications

Jiang Y, Firan M, Nandiwada SL, Reyes A, Marsh RA, Vogel TP, Hajjar J. "The Natural History of X-Linked Lymphoproliferative Disease (XLP1): Lessons from a Long-Term Survivor." Case Reports Immunol. 2020 Aug 26; Pubmed PMID: 32908732
Noroski L, Das S, Hajjar J. "Case 40-2018: A Woman with Recurrent Sinusitis, Cough, and Bronchiectasis." N Engl J Med. 2019 Apr 4;380(14):1383. Pubmed PMID: 30943358
Joud Hajjar, Nguyen AL, Constantine G, Kutac C, Syed MN, Orange JS, Sullivan KE "Prophylactic Antibiotics Versus Immunoglobulin Replacement in Specific Antibody Deficiency." J Clin Immunol. 2020 Jan;40(1):158-164. Pubmed PMID: 31758281
Hajjar J, Al-Kaabi A, Kutac C, Dunn J, Shearer WT, Orange JS "Questioning the accuracy of currently available pneumococcal antibody testing." J Allergy Clin Immunol. 2018 Oct;142(4):1358-1360. Pubmed PMID: 29936105

Chinn IK, Chan AY, Chen K, Chou J, Dorsey MJ, Hajjar J, Jongco AM 3rd, Keller MD, Kobrynski LJ, Kumanovics A, Lawrence MG, Leiding JW, Lugar PL, Orange JS, Patel K, Platt CD, Puck JM, Raje N, Romberg N, Slack MA, Sullivan KE, Tarrant TK, Torgerson TR "Diagnostic interpretation of genetic studies in patients with primary immunodeficiency diseases: A working group report of the Primary Immunodeficiency Diseases Committee of the American Academy of Allergy, Asthma & Immunology." J Allergy Clin Immunol. 2020 Jan;145(1):46-69. Pubmed PMID: 31568798
Heimall JR, Hagin D, Hajjar J, Henrickson SE, Hernandez-Trujillo HS, Tan Y, Kobrynski L, Paris K, Torgerson TR, Verbsky JW, Wasserman RL, Hsieh EWY, Blessing JJ, Chou JS, Lawrence MG, Marsh RA, Rosenzweig SD, Orange JS, Abraham RS "Use of Genetic Testing for Primary Immunodeficiency Patients." J Clin Immunol. 2018 Apr;38(3):320-329. Pubmed PMID: 29675737

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Memberships

The Clinical Immunology Society: Member

The American Academy of Allergy, Asthma and Immunology: Member

Funding

Fatigue in Common Variable Immunodeficiency

Persistent lung infections in primary antibiody deficiency

Fatigue, Inflammation and the Microbiome in patients with Common Variable Immunodeficiency Disorders

Improving transition of patients with primary immunodeficiency to adult care