A photo of Omar Niss.

Member, Division of Hematology

Assistant Professor, UC Department of Pediatrics



Board Certified

My Biography & Research

Additional Languages

Arabic, French

Clinical Interests

Pediatric hematology; sickle cell disease; hemoglobinopathies; congenital anemias; immune mediated cytopenia

Research Interests

Cardiopulmonary complications of sickle cell disease; congenital anemias

Academic Affiliation

Assistant Professor, UC Department of Pediatrics

Clinical Divisions

Cancer and Blood Diseases, Sickle Cell and Hemoglobin Disorders, Cardio-Oncology

Research Divisions


Blog Posts

My Locations

My Education

MD: Jordan University of Science and Technology, 2004.

Residency: Pediatrics, University of Nebraska Medical Center, Omaha, NE, 2010.

Fellowship: Pediatric Hematology Oncology, Cincinnati Children’s Hospital Medical Center, 2013; Sickle Cell Scholar, Cincinnati Children’s Hospital Medical Center, 2014.

Certification: Pediatrics, 2010; Pediatric Hematology/Oncology, 2015.

My Publications

Selected Publication

Progression of albuminuria in patients with sickle cell anemia: a multicenter, longitudinal study. Niss, O; Lane, A; Asnani, MR; Yee, ME; Raj, A; Creary, S; Fitzhugh, C; Bodas, P; Saraf, SL; Sarnaik, S; et al. Blood Advances. 2020; 4:1501-1511.

Robust clinical and laboratory response to hydroxyurea using pharmacokinetically guided dosing for young children with sickle cell anemia. McGann, PT; Niss, O; Dong, M; Marahatta, A; Howard, TA; Mizuno, T; Lane, A; Kalfa, TA; Malik, P; Quinn, CT; et al. American Journal of Hematology. 2019; 94:871-879.

Losartan for the nephropathy of sickle cell anemia: A phase-2, multicenter trial. Quinn, CT; Saraf, SL; Gordeuk, VR; Fitzhugh, CD; Creary, SE; Bodas, P; George, A; Raj, AB; Nero, AC; Terrell, CE; et al. American Journal of Hematology. 2017; 92:E520-E528.

Applications of cardiac magnetic resonance imaging in sickle cell disease. Niss, O; Taylor, MD. Blood Cells, Molecules, and Diseases. 2017; 67:126-134.

Association between diffuse myocardial fibrosis and diastolic dysfunction in sickle cell anemia. Niss, O; Fleck, R; Makue, F; Alsaied, T; Desai, P; Towbin, JA; Malik, P; Taylor, MD; Quinn, CT. Blood. 2017; 130:205-213.

The Cardiomyopathy of Sickle Cell Disease. Niss, O; Quinn, CT. Sickle Cell Disease - Pain and Common Chronic Complications. 2016.

Genotype-phenotype correlations in hereditary elliptocytosis and hereditary pyropoikilocytosis. Niss, O; Chonat, S; Dagaonkar, N; Almansoori, MO; Kerr, K; Rogers, ZR; McGann, PT; Quarmyne, M; Risinger, M; Zhang, K; et al. Blood Cells, Molecules, and Diseases. 2016; 61:4-9.

Sickle cell anemia mice develop a unique cardiomyopathy with restrictive physiology. Bakeer, N; James, J; Roy, S; Wansapura, J; Shanmukhappa, SK; Lorenz, JN; Osinska, H; Backer, K; Huby, A; Shrestha, A; et al. Proceedings of the National Academy of Sciences of the United States of America. 2016; 113:E5182-E5191.

Cardiomyopathy With Restrictive Physiology in Sickle Cell Disease. Niss, O; Quinn, CT; Lane, A; Daily, J; Khoury, PR; Bakeer, N; Kimball, TR; Towbin, JA; Malik, P; Taylor, MD. JACC: Cardiovascular Imaging. 2016; 9:243-252.

IL-10/Janus kinase/signal transducer and activator of transcription 3 signaling dysregulates Bim expression in autoimmune lymphoproliferative syndrome. Niss, O; Sholl, A; Bleesing, JJ; Hildeman, DA. Journal of Allergy and Clinical Immunology. 2015; 135:762-770.