Osama Mohamad, MD, PhD

Title(s)Assistant Professor, Radiation Oncology
SchoolSchool of Medicine
Address1825 4th Street
San Francisco ca 94143
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    Collapse Biography 
    Collapse Education and Training
    American University of Beirut, BeirutB.S.06/2006Biology
    Emory University, AtlantaMD05/2014Medicine
    Emory University , AtlantaPhD06/2014Neuroscience and regenerative medicine
    University of Hawaii, Honolulu, HI06/2015Transitional year internship
    University of Texas Southwestern, Dallas06/2019Radiation Oncology Residency
    National Institute of Radiological Sciences, Chiba, Japan04/2018Research fellowship in carbon ion radiotherapy
    Collapse Awards and Honors
    University of Texas Southwestern Medical Center2018  - 2019Resident of the year chief resident award
    University of Texas Southwestern Medical Center2015  - 2019RSNA Roentgen research award
    Association of Residents in Radiation Oncology2017  - 2018ASTRO/ARRO Global Health Scholar Program Award
    University of Hawaii Transitional Year Program2014  - 2015Resident of the year awad
    Emory University2008  - 2009Crawford Long Anesthesiology Research Award
    Alpha Omega Alpha Honors Medical Society2006  - 2007Carolyn Kuckein Student Research Award
    American University of Beirut2004  - 2005Nicholas Jabr Award for Academic Excellence

    Collapse Overview 
    Collapse Overview
    Dr. Osama Mohamad received his undergraduate degree at the American University of Beirut, in Beirut, Lebanon in 2006 with the highest honors. He then enrolled in the medical scientist training program (MSTP) at Emory University in Atlanta, and successfully finished his MD Ph.D. (Ph.D. in stem cells and regenerative medicine) in 2014. During his Ph.D., he received a Howard Hughes Medical Institute Fellowship award and completed a certificate program in clinical and translational research. He completed a transitional year internship at the University of Hawaii (where he received the resident of the year award), then finished residency training in radiation oncology at the University of Texas Southwestern (UTSW) Medical Center, in Dallas (where he was a chief resident). During residency, he spent a year pursuing a research fellowship at the National Institute of Radiological Sciences in Japan studying carbon ion radiotherapy for prostate cancer. Over his years in training, he received many awards including the resident of the year award and the RSNA Roentgen research award during his chief resident year at UTSW. He presented his research at multiple national and international meetings and published over 45 publications.

    Dr. Mohamad’s number one priority is his patients. He is interested in healthcare innovation with a focus on oncology. He is passionate about clinical care and bringing cutting-edge research and innovation to his patients. At UCSF, he will be treating genitourinary cancers with a special focus on prostate and kidney cancers using intensity-modulated radiotherapy (IMRT), stereotactic radiotherapy (SBRT), and HDR brachytherapy. He will build on the strong interdisciplinary cancer clinical programs in the departments of urology, radiation oncology, and medical oncology at UCSF to develop clinical research, clinical trials, and translational research in prostate and kidney cancers.

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    Collapse Featured Publications
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    Collapse Bibliographic 
    Collapse Publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    1. Diversity and Biocontrol Potential of Cultivable Endophytic Bacteria Associated with Halophytes from the West Aral Sea Basin. Microorganisms. 2021 Jul 06; 9(7). Gao L, Ma J, Liu Y, Huang Y, Mohamad OAA, Jiang H, Egamberdieva D, Li W, Li L. PMID: 34361884.
      View in: PubMed   Mentions:
    2. Treating Localized High-Risk Prostate Cancer: Do All Roads Lead to Rome? Int J Radiat Oncol Biol Phys. 2021 Jul 01; 110(3):634-635. Mohamad O, Feng F. PMID: 34089672.
      View in: PubMed   Mentions:    Fields:    
    3. United States Radiation Oncology Fellowship Growth From 2010 to 2020. Int J Radiat Oncol Biol Phys. 2021 Jun 18. Chowdhary M, O'Bryant S, Peters GW, Vapiwala N, Mohamad O, Royce TJ. PMID: 34147580.
      View in: PubMed   Mentions:    Fields:    
    4. Adjuvant Versus Early Salvage Radiation Therapy for Men at High Risk for Recurrence Following Radical Prostatectomy for Prostate Cancer and the Risk of Death. J Clin Oncol. 2021 Jul 10; 39(20):2284-2293. Tilki D, Chen MH, Wu J, Huland H, Graefen M, Wiegel T, Böhmer D, Mohamad O, Cowan JE, Feng FY, Carroll PR, Trock BJ, Partin AW, D'Amico AV. PMID: 34086480.
      View in: PubMed   Mentions:    Fields:    
    5. Diversity and function of rhizosphere microorganisms between wild and cultivated medicinal plant Glycyrrhiza uralensis Fisch under different soil conditions. Arch Microbiol. 2021 Aug; 203(6):3657-3665. Dong ZY, Rao MPN, Liao TJ, Li L, Liu YH, Xiao M, Mohamad OAA, Tian YY, Li WJ. PMID: 33993326.
      View in: PubMed   Mentions:    Fields:    Translation:AnimalsCells
    6. Radiation Delay Is Okay, but Where Is the Evidence? JAMA Oncol. 2021 Mar 01; 7(3):463-464. Mohamad O, Roach M. PMID: 33443566.
      View in: PubMed   Mentions:    Fields:    
    7. Neoadjuvant SABR for Renal Cell Carcinoma Inferior Vena Cava Tumor Thrombus-Safety Lead-in Results of a Phase 2 Trial. Int J Radiat Oncol Biol Phys. 2021 Jul 15; 110(4):1135-1142. Margulis V, Freifeld Y, Pop LM, Manna S, Kapur P, Pedrosa I, Christie A, Mohamad O, Mannala S, Singla N, Wait M, Bagrodia A, Woldu SL, Gahan J, Brugarolas J, Timmerman R, Hannan R. PMID: 33549705.
      View in: PubMed   Mentions:    Fields:    
    8. Hypofractionated radiotherapy in the real-world setting: An international ESTRO-GIRO survey. Radiother Oncol. 2021 04; 157:32-39. Rodin D, Tawk B, Mohamad O, Grover S, Moraes FY, Yap ML, Zubizarreta E, Lievens Y. PMID: 33453312.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    9. A Systematic Review of the Evidence for the Decipher Genomic Classifier in Prostate Cancer. Eur Urol. 2021 03; 79(3):374-383. Jairath NK, Dal Pra A, Vince R, Dess RT, Jackson WC, Tosoian JJ, McBride SM, Zhao SG, Berlin A, Mahal BA, Kishan AU, Den RB, Freedland SJ, Salami SS, Kaffenberger SD, Pollack A, Tran P, Mehra R, Morgan TM, Weiner AB, Mohamad O, Carroll PR, Cooperberg MR, Karnes RJ, Nguyen PL, Michalski JM, Tward JD, Feng FY, Schaeffer EM, Spratt DE. PMID: 33293078.
      View in: PubMed   Mentions: 4     Fields:    
    10. Dose-response with stereotactic body radiotherapy for prostate cancer: A multi-institutional analysis of prostate-specific antigen kinetics and biochemical control. Radiother Oncol. 2021 01; 154:207-213. Levin-Epstein RG, Jiang NY, Wang X, Upadhyaya SK, Collins SP, Suy S, Aghdam N, Mantz C, Katz AJ, Miszczyk L, Napieralska A, Namysl-Kaletka A, Prionas N, Bagshaw H, Buyyounouski MK, Cao M, Agazaryan N, Dang A, Yuan Y, Kupelian PA, Zaorsky NG, Spratt DE, Mohamad O, Feng FY, Mahal BA, Boutros PC, Kishan AU, Juarez J, Shabsovich D, Jiang T, Kahlon S, Patel A, Patel J, Nickols NG, Steinberg ML, Fuller DB, Kishan AU. PMID: 33035622.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    11. Delaying Dilemmas: Coronavirus Complications Impacting the Management of Prostate Cancer. Int J Radiat Oncol Biol Phys. 2020 10 01; 108(2):337. Mohamad O, Roach M. PMID: 32890501.
      View in: PubMed   Mentions: 5     Fields:    Translation:HumansCellsPHPublic Health
    12. Margin-Free Fractionated Stereotactic Radiation Therapy for Pediatric Brain Tumors. Pract Radiat Oncol. 2020 Nov - Dec; 10(6):e485-e494. Mohamad O, Wardak Z, Bowers DC, Le AH, Dan T, Abdulrahman R, Gargan L, Klesse L, Weprin B, Swift D, Price A, Ding C, Stojadinovic S, Sklar F, Braga B, Timmerman R. PMID: 32428764.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    13. Radiation Therapy for Pediatric Brain Tumors using Robotic Radiation Delivery System and Intensity Modulated Proton Therapy. Pract Radiat Oncol. 2020 May - Jun; 10(3):e173-e182. Lin MH, Yang M, Dougherty J, Tasson A, Zhang Y, Mohamad O, Dan T, Yan Y, Gu X, Timmerman R, Laack N, Beltran C. PMID: 31542454.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    14. Stereotactic Ablative Radiation Therapy (SAbR) Used to Defer Systemic Therapy in Oligometastatic Renal Cell Cancer. Int J Radiat Oncol Biol Phys. 2019 10 01; 105(2):367-375. Zhang Y, Schoenhals J, Christie A, Mohamad O, Wang C, Bowman I, Singla N, Hammers H, Courtney K, Bagrodia A, Margulis V, Desai N, Garant A, Choy H, Timmerman R, Brugarolas J, Hannan R. PMID: 31377159.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    15. Novel hyaluronan formulation for preventing acute skin reactions in breast during radiotherapy: a randomized clinical trial. Support Care Cancer. 2020 Mar; 28(3):1481-1489. Rahimi A, Mohamad O, Albuquerque K, Kim DWN, Chen D, Thomas K, Wooldridge R, Rivers A, Leitch M, Rao R, Haley B, Ahn C, Garwood D, Spangler A. PMID: 31273506.
      View in: PubMed   Mentions:    Fields:    Translation:HumansPHPublic Health
    16. Key considerations when reviewing subsequent primary cancers following radiotherapy - Authors' reply. Lancet Oncol. 2019 06; 20(6):e292. Mohamad O, Tabuchi T, Morishima T, Makishima H, Miyashiro I, Tsuji H. PMID: 31162099.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    17. Oculomotor Schwannomas: A Systematic Review and Report of Two Pediatric Cases Treated with Fractionated Cyberknife Stereotactic Radiotherapy. World Neurosurg. 2019 Sep; 129:487-496. Fadel HA, El Ahmadieh TY, Plitt AR, Neeley OJ, Johnson Z, Aoun SG, Mohamad O, Timmerman R, Weprin BE. PMID: 31125775.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    18. Fellowship Training Programs in Radiation Oncology: A Snapshot From 2005 to 2017. Int J Radiat Oncol Biol Phys. 2019 07 15; 104(4):765-772. Doke K, Mohamad O, Royce TJ, Meyer J, Chen AM. PMID: 30885774.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    19. Risk of subsequent primary cancers after carbon ion radiotherapy, photon radiotherapy, or surgery for localised prostate cancer: a propensity score-weighted, retrospective, cohort study. Lancet Oncol. 2019 05; 20(5):674-685. Mohamad O, Tabuchi T, Nitta Y, Nomoto A, Sato A, Kasuya G, Makishima H, Choy H, Yamada S, Morishima T, Tsuji H, Miyashiro I, Kamada T. PMID: 30885458.
      View in: PubMed   Mentions: 15     Fields:    Translation:Humans
    20. Single fraction carbon ion radiotherapy for colorectal cancer liver metastasis: A dose escalation study. Cancer Sci. 2019 Jan; 110(1):303-309. Makishima H, Yasuda S, Isozaki Y, Kasuya G, Okada N, Miyazaki M, Mohamad O, Matsufuji N, Yamada S, Tsuji H, Kamada T, Liver Cancer Working Group . PMID: 30417485.
      View in: PubMed   Mentions: 8     Fields:    Translation:HumansCTClinical Trials
    21. Predictors of Cardiac Sparing in Deep Inspiration Breath-Hold for Patients With Left Sided Breast Cancer. Front Oncol. 2018; 8:564. Mkanna A, Mohamad O, Ramia P, Thebian R, Makki M, Tamim H, Jalbout W, Youssef B, Eid T, Geara F, Shahine B, Zeidan YH. PMID: 30538954.
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    22. Clinical Indications for Carbon Ion Radiotherapy. Clin Oncol (R Coll Radiol). 2018 05; 30(5):317-329. Mohamad O, Yamada S, Durante M. PMID: 29402598.
      View in: PubMed   Mentions: 10     Fields:    Translation:Humans
    23. Carbon ion radiotherapy for inoperable pediatric osteosarcoma. Oncotarget. 2018 May 01; 9(33):22976-22985. Mohamad O, Imai R, Kamada T, Nitta Y, Araki N, Working Group for Bone and Soft Tissue Sarcoma . PMID: 29796166.
      View in: PubMed   Mentions: 11     Fields:    
    24. A Fellow's Fate: Employment Outcomes of Radiation Oncology Fellowship Graduates. Int J Radiat Oncol Biol Phys. 2018 09 01; 102(1):16-17. Mohamad O, Doke K, Marcrom S, Chen AM, Royce TJ, Meyer JJ. PMID: 30102192.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    25. Safety and efficacy of concurrent immune checkpoint inhibitors and hypofractionated body radiotherapy. Oncoimmunology. 2018; 7(7):e1440168. Mohamad O, Diaz de Leon A, Schroeder S, Leiker A, Christie A, Zhang-Velten E, Trivedi L, Khan S, Desai NB, Laine A, Albuquerque K, Iyengar P, Arriaga Y, Courtney K, Gerber DE, Hammers H, Choy H, Timmerman R, Brugarolas J, Hannan R. PMID: 29900043.
      View in: PubMed   Mentions:
    26. Evolution of Carbon Ion Radiotherapy at the National Institute of Radiological Sciences in Japan. Cancers (Basel). 2018 Mar 06; 10(3). Mohamad O, Makishima H, Kamada T. PMID: 29509684.
      View in: PubMed   Mentions:
    27. Recent Trends in Radiation Oncology Fellowship Training in the United States. Int J Radiat Oncol Biol Phys. 2017 11 01; 99(3):539-540. Mohamad O, Meyer JJ. PMID: 29280447.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    28. Carbon Ion Radiotherapy: A Review of Clinical Experiences and Preclinical Research, with an Emphasis on DNA Damage/Repair. Cancers (Basel). 2017 Jun 09; 9(6). Mohamad O, Sishc BJ, Saha J, Pompos A, Rahimi A, Story MD, Davis AJ, Kim DWN. PMID: 28598362.
      View in: PubMed   Mentions:
    29. Deep inspiration breathhold for left-sided breast cancer patients with unfavorable cardiac anatomy requiring internal mammary nodal irradiation. Pract Radiat Oncol. 2017 Nov - Dec; 7(6):e361-e367. Mohamad O, Shiao J, Zhao B, Roach K, Ramirez E, Vo DT, Thomas K, Gu X, Spangler A, Albuquerque K, Rahimi A. PMID: 28666899.
      View in: PubMed   Mentions: 6     Fields:    Translation:HumansCTClinical Trials
    30. Stem cell transplantation therapy for multifaceted therapeutic benefits after stroke. Prog Neurobiol. 2017 Oct; 157:49-78. Wei L, Wei ZZ, Jiang MQ, Mohamad O, Yu SP. PMID: 28322920.
      View in: PubMed   Mentions: 43     Fields:    Translation:HumansAnimals
    31. Optogenetic stimulation of glutamatergic neuronal activity in the striatum enhances neurogenesis in the subventricular zone of normal and stroke mice. Neurobiol Dis. 2017 Feb; 98:9-24. Song M, Yu SP, Mohamad O, Cao W, Wei ZZ, Gu X, Jiang MQ, Wei L. PMID: 27884724.
      View in: PubMed   Mentions: 14     Fields:    Translation:AnimalsCells
    32. Congenital Mesenteric Defect: An Uncommon Cause of Bowel Obstruction. Hawaii J Med Public Health. 2016 Feb; 75(2):46-7. Benyamini P, Lopez S, Cooper M, Mohamad O, Maldini G. PMID: 26918208.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    33. Absence of physiologic breast response to pregnancy and lactation after radiation therapy. Pract Radiat Oncol. 2016 Mar-Apr; 6(2):e25-6. Mohamad O, McFarlane M, Rahimi A. PMID: 26553113.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    34. Inhibition of Na+/K+-ATPase induces hybrid cell death and enhanced sensitivity to chemotherapy in human glioblastoma cells. BMC Cancer. 2014 Sep 26; 14:716. Chen D, Song M, Mohamad O, Yu SP. PMID: 25255962.
      View in: PubMed   Mentions: 28     Fields:    Translation:HumansCells
    35. Efficient neuronal differentiation of mouse ES and iPS cells using a rotary cell culture protocol. Differentiation. 2013 Nov-Dec; 86(4-5):149-58. Mohamad O, Yu SP, Chen D, Ogle M, Song M, Wei L. PMID: 24480155.
      View in: PubMed   Mentions: 6     Fields:    Translation:AnimalsCells
    36. Highly efficient differentiation of neural precursors from human embryonic stem cells and benefits of transplantation after ischemic stroke in mice. Stem Cell Res Ther. 2013 Aug 08; 4(4):93. Drury-Stewart D, Song M, Mohamad O, Guo Y, Gu X, Chen D, Wei L. PMID: 23928330.
      View in: PubMed   Mentions: 17     Fields:    Translation:HumansAnimalsCells
    37. Acute and delayed protective effects of pharmacologically induced hypothermia in an intracerebral hemorrhage stroke model of mice. Neuroscience. 2013 Nov 12; 252:489-500. Wei S, Sun J, Li J, Wang L, Hall CL, Dix TA, Mohamad O, Wei L, Yu SP. PMID: 23912033.
      View in: PubMed   Mentions: 28     Fields:    Translation:Animals
    38. Vector-free and transgene-free human iPS cells differentiate into functional neurons and enhance functional recovery after ischemic stroke in mice. PLoS One. 2013; 8(5):e64160. Mohamad O, Drury-Stewart D, Song M, Faulkner B, Chen D, Yu SP, Wei L. PMID: 23717557.
      View in: PubMed   Mentions: 35     Fields:    Translation:HumansAnimalsCells
    39. Coordinated development of voltage-gated Na+ and K+ currents regulates functional maturation of forebrain neurons derived from human induced pluripotent stem cells. Stem Cells Dev. 2013 May 15; 22(10):1551-63. Song M, Mohamad O, Chen D, Yu SP. PMID: 23259973.
      View in: PubMed   Mentions: 19     Fields:    Translation:HumansAnimalsCells
    40. Neurotrophic effects of leukemia inhibitory factor on neural cells derived from human embryonic stem cells. Stem Cells. 2012 Nov; 30(11):2387-99. Majumder A, Banerjee S, Harrill JA, Machacek DW, Mohamad O, Bacanamwo M, Mundy WR, Wei L, Dhara SK, Stice SL. PMID: 22899336.
      View in: PubMed   Mentions: 19     Fields:    Translation:HumansAnimalsCells
    41. Restoration of intracortical and thalamocortical circuits after transplantation of bone marrow mesenchymal stem cells into the ischemic brain of mice. Cell Transplant. 2013; 22(11):2001-15. Song M, Mohamad O, Gu X, Wei L, Yu SP. PMID: 23069268.
      View in: PubMed   Mentions: 31     Fields:    Translation:AnimalsCells
    42. Regulatory roles of the NMDA receptor GluN3A subunit in locomotion, pain perception and cognitive functions in adult mice. J Physiol. 2013 Jan 01; 591(1):149-68. Mohamad O, Song M, Wei L, Yu SP. PMID: 23006484.
      View in: PubMed   Mentions: 14     Fields:    Translation:Animals
    43. A novel stroke therapy of pharmacologically induced hypothermia after focal cerebral ischemia in mice. FASEB J. 2012 Jul; 26(7):2799-810. Choi KE, Hall CL, Sun JM, Wei L, Mohamad O, Dix TA, Yu SP. PMID: 22459147.
      View in: PubMed   Mentions: 48     Fields:    Translation:Animals
    44. N-methyl-D-aspartate receptor subtype 3A promotes apoptosis in developing mouse brain exposed to hyperoxia. Neural Regen Res. 2012 Feb 05; 7(4):273-7. Li J, Yu S, Lu Z, Mohamad O, Wei L. PMID: 25806068.
      View in: PubMed   Mentions:
    45. Erythropoietin reduces neuronal cell death and hyperalgesia induced by peripheral inflammatory pain in neonatal rats. Mol Pain. 2011 Jul 21; 7:51. Mohamad O, Chen D, Zhang L, Hofmann C, Wei L, Yu SP. PMID: 21777449.
      View in: PubMed   Mentions: 10     Fields:    Translation:HumansAnimalsCells
    46. Small molecule promoted feeder free and adherent differentiation of functional neurons from human embryonic and induced pluripotent stem cells. J Stem Cells. 2011; 6(1):1-7. Drury-Stewart D, Song M, Mohamad O, Yu SP, Wei L. PMID: 22997841.
      View in: PubMed   Mentions: 5     Fields:    Translation:HumansCells
    47. Sublethal transient global ischemia stimulates migration of neuroblasts and neurogenesis in mice. Transl Stroke Res. 2010 Sep; 1(3):184-96. Li Y, Yu SP, Mohamad O, Genetta T, Wei L. PMID: 21792374.
      View in: PubMed   Mentions: 14     Fields:    
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