Aaron Tward, MD, PhD

Title(s)Associate Professor, Otolaryngology
SchoolSchool of Medicine
Phone415-353-2757
ORCID ORCID Icon0000-0003-4868-8732 Additional info
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    Collapse Biography 
    Collapse Education and Training
    UCLAB.S.1999Microbiology and Molecular Genetics
    UCLAM.A.1999Microbiology and Molecular Genetics
    UCSFPh.D.2005Biomedical Sciences
    UCSFM.D.2007Medicine
    Harvard Medical School/Massachusetts Eye and Ear InfirmaryResidency2012Otolaryngology - Head and Neck Surgery
    Harvard Medical School/Massachusetts Eye and Ear InfirmaryFellowship2014Neurotology
    University of California, San Francisco, CA2021Diversity, Equity, and Inclusion Champion Training

    Collapse Overview 
    Collapse Overview
    Aaron D. Tward M.D., Ph.D., is a board-certified, fellowship-trained surgeon who specializes in the diagnosis and treatment of disorders of the ear and skull base.

    Dr. Tward has particular clinical interests in cochlear implantation, management of benign and malignant tumors of the skull base including acoustic neuroma (vestibular schwannoma), surgery for chronic otitis media, stapedectomy, superior semi-circular canal dehiscence repair, and endoscopic surgery of the ear and skull base.

    Dr. Tward’s research interests include tumor biology, the genetics and genomics of disorders of the head and neck, the development and physiology of the organs of hearing, and clinical outcomes of surgery of the ear and skull base.

    Education and Training:
    • Undergraduate: University of California, Los Angeles, B.S. - Microbiology and Molecular Genetics
    • Graduate School: University of California, Los Angeles, M.A. - Microbiology and Molecular Genetics, Lab of A. Jake Lusis
    • Graduate School: University of California, San Francisco, Ph.D. - Biomedical Sciences, Lab of J. Michael Bishop
    • Medical School: University of California, San Francisco, M.D.
    • Internship: Brigham and Women’s Hospital, Harvard Medical School - General Surgery

    • Residency: Otolaryngology – Head and Neck Surgery
    Harvard Medical School Residency Program in Otolaryngology
    Massachusetts Eye and Ear Infirmary
    Massachusetts General Hospital
    Brigham and Women’s Hospital
    Beth Israel-Deaconess Medical Center
    Boston Children’s Hospital

    • Clinical Fellowship: Otology, Neurotology, and Skull Base Surgery
    Harvard Medical School
    Massachusetts Eye and Ear Infirmary
    Massachusetts General Hospital
    (Michael J. McKenna and Daniel J. Lee Fellowship directors)

    • Post Doctoral: The Broad Institute of MIT and Harvard
    Lab of Todd R. Golub

    • Diplomate, American Board of Otolaryngology
    • License, Medical Board of California

    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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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. A Rare Complication of Chronic Otitis Media: Central Skull Base Osteomyelitis Managed With Combined Endoscopic Transmastoid and Transsphenoidal Debridement. Otol Neurotol. 2022 03 01; 43(3):e344-e347. Suresh K, Chari DA, Bartholomew RA, Tward AD, Kozin ED, Barshak MB, Holbrook EH, Lee DJ. PMID: 35147606.
      View in: PubMed   Mentions:
    2. Author Correction: A single-cell atlas and lineage analysis of the adult Drosophila ovary. Nat Commun. 2021 Oct 06; 12(1):5951. Rust K, Byrnes LE, Yu KS, Park JS, Sneddon JB, Tward AD, Nystul TG. PMID: 34615857; PMCID: PMC8494928.
      View in: PubMed   Mentions:    Fields:    
    3. Human melanocyte development and melanoma dedifferentiation at single-cell resolution. Nat Cell Biol. 2021 09; 23(9):1035-1047. Belote RL, Le D, Maynard A, Lang UE, Sinclair A, Lohman BK, Planells-Palop V, Baskin L, Tward AD, Darmanis S, Judson-Torres RL. PMID: 34475532.
      View in: PubMed   Mentions:    Fields:    Translation:HumansCells
    4. Scalable genome engineering of adult keratinocytes for the development of novel cell therapeutics. Cytotherapy. 2021 May 1; 23(5):s153. Mahieu MC, Mancini MA, beckett bC, Tward TA. .
      View in: Publisher Site   Mentions:
    5. A Hierarchy of Proliferative and Migratory Keratinocytes Maintains the Tympanic Membrane. Cell Stem Cell. 2021 02 04; 28(2):315-330.e5. Frumm SM, Yu SK, Chang J, Artichoker JA, Scaria SM, Lee KP, Byrnes LE, Sneddon JB, Tward AD. PMID: 33181078; PMCID: PMC8962966.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansCells
    6. A single-cell atlas and lineage analysis of the adult Drosophila ovary. Nat Commun. 2020 11 06; 11(1):5628. Rust K, Byrnes LE, Yu KS, Park JS, Sneddon JB, Tward AD, Nystul TG. PMID: 33159074; PMCID: PMC7648648.
      View in: PubMed   Mentions: 6     Fields:    Translation:Animals
    7. Transcriptional control of subtype switching ensures adaptation and growth of pancreatic cancer. Elife. 2019 05 28; 8. Adams CR, Htwe HH, Marsh T, Wang AL, Montoya ML, Subbaraj L, Tward AD, Bardeesy N, Perera RM. PMID: 31134896; PMCID: PMC6538376.
      View in: PubMed   Mentions: 20     Fields:    Translation:HumansAnimalsCells
    8. Adventitial Stromal Cells Define Group 2 Innate Lymphoid Cell Tissue Niches. Immunity. 2019 03 19; 50(3):707-722.e6. Dahlgren MW, Jones SW, Cautivo KM, Dubinin A, Ortiz-Carpena JF, Farhat S, Yu KS, Lee K, Wang C, Molofsky AV, Tward AD, Krummel MF, Peng T, Molofsky AB. PMID: 30824323; PMCID: PMC6553479.
      View in: PubMed   Mentions: 59     Fields:    Translation:AnimalsCells
    9. Cellular Dynamics in Early Healing of Mouse Tympanic Membranes. Otol Neurotol. 2019 02; 40(2):e160-e166. Chari DA, Frumm SM, Akil O, Tward AD. PMID: 30570602.
      View in: PubMed   Mentions: 3     Fields:    Translation:Animals
    10. Temporal Dynamics of Pseudoprogression After Gamma Knife Radiosurgery for Vestibular Schwannomas-A Retrospective Volumetric Study. Neurosurgery. 2019 01 01; 84(1):123-131. Breshears JD, Chang J, Molinaro AM, Sneed PK, McDermott MW, Tward A, Theodosopoulos PV. PMID: 29518221.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    11. Impact of pretreatment growth on Tumor control for vestibular schwannomas following gamma knife. Laryngoscope. 2019 03; 129(3):743-747. Chang J, Breshears JD, Molinaro AM, Sneed PK, McDermott MW, Theodosopoulos PV, Tward AD. PMID: 30408172.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    12. Lineage dynamics of murine pancreatic development at single-cell resolution. Nat Commun. 2018 09 25; 9(1):3922. Byrnes LE, Wong DM, Subramaniam M, Meyer NP, Gilchrist CL, Knox SM, Tward AD, Ye CJ, Sneddon JB. PMID: 30254276; PMCID: PMC6156586.
      View in: PubMed   Mentions: 31     Fields:    Translation:HumansAnimalsCells
    13. Oncogenic Signaling Pathways in The Cancer Genome Atlas. Cell. 2018 04 05; 173(2):321-337.e10. Sanchez-Vega F, Mina M, Armenia J, Chatila WK, Luna A, La KC, Dimitriadoy S, Liu DL, Kantheti HS, Saghafinia S, Chakravarty D, Daian F, Gao Q, Bailey MH, Liang WW, Foltz SM, Shmulevich I, Ding L, Heins Z, Ochoa A, Gross B, Gao J, Zhang H, Kundra R, Kandoth C, Bahceci I, Dervishi L, Dogrusoz U, Zhou W, Shen H, Laird PW, Way GP, Greene CS, Liang H, Xiao Y, Wang C, Iavarone A, Berger AH, Bivona TG, Lazar AJ, Hammer GD, Giordano T, Kwong LN, McArthur G, Huang C, Tward AD, Frederick MJ, McCormick F, Meyerson M, Cancer Genome Atlas Research Network, Van Allen EM, Cherniack AD, Ciriello G, Sander C, Schultz N. PMID: 29625050; PMCID: PMC6070353.
      View in: PubMed   Mentions: 524     Fields:    Translation:HumansCells
    14. Salivary glands regenerate after radiation injury through SOX2-mediated secretory cell replacement. EMBO Mol Med. 2018 03; 10(3). Emmerson E, May AJ, Berthoin L, Cruz-Pacheco N, Nathan S, Mattingly AJ, Chang JL, Ryan WR, Tward AD, Knox SM. PMID: 29335337; PMCID: PMC5840548.
      View in: PubMed   Mentions: 26     Fields:    Translation:HumansAnimalsCellsPHPublic Health
    15. Duration and Timing of Transient Tumor Enlargement after Gamma Knife Radiosurgery for Vestibular Schwannomas. Journal of Neurological Surgery Part B Skull Base. 2018 Feb 1; 79(S 01):s1-s188. Breshears BJ, Chang CJ, Molinaro MA, Sneed SP, Mcdermott MM, Tward TA, Theodosopoulos TP. .
      View in: Publisher Site   Mentions:
    16. Meningiomas of the Cerebellopontine Angle. Skull Base Surgery of the Posterior Fossa. 2018 Jan 1; 103-113. Magill MS, Theodosopoulos TP, Tward TA, Cheung CS, McDermott MM. .
      View in: Publisher Site   Mentions:
    17. Defining epithelial cell dynamics and lineage relationships in the developing lacrimal gland. Development. 2017 07 01; 144(13):2517-2528. Farmer DT, Nathan S, Finley JK, Shengyang Yu K, Emmerson E, Byrnes LE, Sneddon JB, McManus MT, Tward AD, Knox SM. PMID: 28576768; PMCID: PMC5536870.
      View in: PubMed   Mentions: 12     Fields:    Translation:HumansAnimalsCells
    18. Inhibition of fatty acid oxidation as a therapy for MYC-overexpressing triple-negative breast cancer. Nat Med. 2016 04; 22(4):427-32. Camarda R, Zhou AY, Kohnz RA, Balakrishnan S, Mahieu C, Anderton B, Eyob H, Kajimura S, Tward A, Krings G, Nomura DK, Goga A. PMID: 26950360; PMCID: PMC4892846.
      View in: PubMed   Mentions: 141     Fields:    Translation:HumansCells
    19. Auditory brainstem implantation in a 16-month-old boy with cochlear hypoplasia. Otol Neurotol. 2015 Apr; 36(4):618-24. Puram SV, Tward AD, Jung DH, Dilger AE, Herrmann BS, Duhaime AC, Barker FG, Lee DJ. PMID: 25473959.
      View in: PubMed   Mentions: 3     Fields:    Translation:HumansCTClinical Trials
    20. Reciprocal interaction of Wnt and RXR-α pathways in hepatocyte development and hepatocellular carcinoma. PLoS One. 2015; 10(3):e0118480. Li J, Chanrion M, Sawey E, Wang T, Chow E, Tward A, Su Y, Xue W, Lucito R, Zender L, Lowe SW, Bishop JM, Powers S. PMID: 25738607; PMCID: PMC4349704.
      View in: PubMed   Mentions: 7     Fields:    Translation:HumansAnimalsCells
    21. Intra-tumor genetic heterogeneity and mortality in head and neck cancer: analysis of data from the Cancer Genome Atlas. PLoS Med. 2015 Feb; 12(2):e1001786. Mroz EA, Tward AD, Tward AM, Hammon RJ, Ren Y, Rocco JW. PMID: 25668320; PMCID: PMC4323109.
      View in: PubMed   Mentions: 100     Fields:    Translation:HumansCells
    22. Comprehensive genomic characterization of head and neck squamous cell carcinomas. Nature. 2015 Jan 29; 517(7536):576-82. Cancer Genome Atlas Network. PMID: 25631445; PMCID: PMC4311405.
      View in: PubMed   Mentions: 1191     Fields:    Translation:HumansCells
    23. Characterization of HPV and host genome interactions in primary head and neck cancers. Proc Natl Acad Sci U S A. 2014 Oct 28; 111(43):15544-9. Parfenov M, Pedamallu CS, Gehlenborg N, Freeman SS, Danilova L, Bristow CA, Lee S, Hadjipanayis AG, Ivanova EV, Wilkerson MD, Protopopov A, Yang L, Seth S, Song X, Tang J, Ren X, Zhang J, Pantazi A, Santoso N, Xu AW, Mahadeshwar H, Wheeler DA, Haddad RI, Jung J, Ojesina AI, Issaeva N, Yarbrough WG, Hayes DN, Grandis JR, El-Naggar AK, Meyerson M, Park PJ, Chin L, Seidman JG, Hammerman PS, Kucherlapati R, Cancer Genome Atlas Network. PMID: 25313082; PMCID: PMC4217452.
      View in: PubMed   Mentions: 131     Fields:    Translation:HumansCells
    24. Mutant-Allele Tumor Heterogeneity (MATH) Adds to Human Papillomavirus (HPV) Status in Predicting Outcome in Head-and-Neck Squamous Cell Carcinoma (HNSCC) Molecular Biology and Therapeutics. International Journal of Radiation Oncology • Biology • Physics. 2014 Feb 1; 88(2):467-468. Rocco RJ, Tward TA, Ren RY, Hammon HR, Mroz ME. .
      View in: Publisher Site   Mentions:
    25. High intratumor genetic heterogeneity is related to worse outcome in patients with head and neck squamous cell carcinoma. Cancer. 2013 Aug 15; 119(16):3034-42. Mroz EA, Tward AD, Pickering CR, Myers JN, Ferris RL, Rocco JW. PMID: 23696076; PMCID: PMC3735618.
      View in: PubMed   Mentions: 91     Fields:    Translation:Humans
    26. The mutational landscape of head and neck squamous cell carcinoma. Science. 2011 Aug 26; 333(6046):1157-60. Stransky N, Egloff AM, Tward AD, Kostic AD, Cibulskis K, Sivachenko A, Kryukov GV, Lawrence MS, Sougnez C, McKenna A, Shefler E, Ramos AH, Stojanov P, Carter SL, Voet D, Cortés ML, Auclair D, Berger MF, Saksena G, Guiducci C, Onofrio RC, Parkin M, Romkes M, Weissfeld JL, Seethala RR, Wang L, Rangel-Escareño C, Fernandez-Lopez JC, Hidalgo-Miranda A, Melendez-Zajgla J, Winckler W, Ardlie K, Gabriel SB, Meyerson M, Lander ES, Getz G, Golub TR, Garraway LA, Grandis JR. PMID: 21798893; PMCID: PMC3415217.
      View in: PubMed   Mentions: 1064     Fields:    Translation:HumansAnimalsCells
    27. Integration of genomic analysis and in vivo transfection to identify sprouty 2 as a candidate tumor suppressor in liver cancer. Hepatology. 2008 Apr; 47(4):1200-10. Lee SA, Ho C, Roy R, Kosinski C, Patil MA, Tward AD, Fridlyand J, Chen X. PMID: 18214995.
      View in: PubMed   Mentions: 49     Fields:    Translation:HumansAnimals
    28. The Functional Consequences of Polymorphisms in the Human PON1 Gene. The Paraoxonases: Their Role in Disease Development and Xenobiotic Metabolism. 2008 Jan 1; 267-281. Furlong FC, Richter RR, Li LW, Brophy BV, Carlson CC, Rieder RM, Nickerson ND, Costa CL, Ranchalis RJ, Lusis LA, Shih SD, Tward TA, Jarvik JG. .
      View in: Publisher Site   Mentions:
    29. Distinct pathways of genomic progression to benign and malignant tumors of the liver. Proc Natl Acad Sci U S A. 2007 Sep 11; 104(37):14771-6. Tward AD, Jones KD, Yant S, Cheung ST, Fan ST, Chen X, Kay MA, Wang R, Bishop JM. PMID: 17785413; PMCID: PMC1964540.
      View in: PubMed   Mentions: 104     Fields:    Translation:HumansAnimals
    30. Inhibition of CDK1 as a potential therapy for tumors over-expressing MYC. Nat Med. 2007 Jul; 13(7):820-7. Goga A, Yang D, Tward AD, Morgan DO, Bishop JM. PMID: 17589519.
      View in: PubMed   Mentions: 146     Fields:    Translation:HumansAnimalsCells
    31. Bone morphogenetic protein antagonist gremlin 1 is widely expressed by cancer-associated stromal cells and can promote tumor cell proliferation. Proc Natl Acad Sci U S A. 2006 Oct 03; 103(40):14842-7. Sneddon JB, Zhen HH, Montgomery K, van de Rijn M, Tward AD, West R, Gladstone H, Chang HY, Morganroth GS, Oro AE, Brown PO. PMID: 17003113; PMCID: PMC1578503.
      View in: PubMed   Mentions: 117     Fields:    Translation:HumansCells
    32. Trypanosoma congolense: paraoxonase 1 prolongs survival of infected mice. Exp Parasitol. 2006 Nov; 114(3):240-5. Bhasin KK, Yu JM, Tward A, Shih D, Campbell DA, Lusis AJ. PMID: 16682028.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansAnimals
    33. Hepatocellular carcinoma in Txnip-deficient mice. Oncogene. 2006 Jun 15; 25(25):3528-36. Sheth SS, Bodnar JS, Ghazalpour A, Thipphavong CK, Tsutsumi S, Tward AD, Demant P, Kodama T, Aburatani H, Lusis AJ. PMID: 16607285.
      View in: PubMed   Mentions: 59     Fields:    Translation:Animals
    34. Toxicity of chlorpyrifos and chlorpyrifos oxon in a transgenic mouse model of the human paraoxonase (PON1) Q192R polymorphism. Pharmacogenet Genomics. 2005 Aug; 15(8):589-98. Cole TB, Walter BJ, Shih DM, Tward AD, Lusis AJ, Timchalk C, Richter RJ, Costa LG, Furlong CE. PMID: 16007003.
      View in: PubMed   Mentions: 33     Fields:    Translation:HumansAnimals
    35. Role of paraoxonase (PON1) status in pesticide sensitivity: genetic and temporal determinants. Neurotoxicology. 2005 Aug; 26(4):651-9. Furlong CE, Cole TB, Jarvik GP, Pettan-Brewer C, Geiss GK, Richter RJ, Shih DM, Tward AD, Lusis AJ, Costa LG. PMID: 16112327.
      View in: PubMed   Mentions: 21     Fields:    Translation:HumansAnimals
    36. Paraoxonase 1 (PON1) status and risk of insecticide exposure. J Biochem Mol Toxicol. 2005; 19(3):182-3. Furlong CE, Cole TB, Walter BJ, Shih DM, Tward A, Lusis AJ, Timchalk C, Richter RJ, Costa LG. PMID: 15977192.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansAnimals
    37. Genomic progression in mouse models for liver tumors. Cold Spring Harb Symp Quant Biol. 2005; 70:217-24. Tward AD, Jones KD, Yant S, Kay MA, Wang R, Bishop JM. PMID: 16869757.
      View in: PubMed   Mentions: 9     Fields:    Translation:HumansAnimalsCells
    38. Systemic rather than local heme oxygenase-1 overexpression improves cardiac allograft outcomes in a new transgenic mouse. J Immunol. 2003 Aug 01; 171(3):1572-80. Araujo JA, Meng L, Tward AD, Hancock WW, Zhai Y, Lee A, Ishikawa K, Iyer S, Buelow R, Busuttil RW, Shih DM, Lusis AJ, Kupiec-Weglinski JW. PMID: 12874251.
      View in: PubMed   Mentions: 26     Fields:    Translation:Animals
    39. Expression of human paraoxonase (PON1) during development. Pharmacogenetics. 2003 Jun; 13(6):357-64. Cole TB, Jampsa RL, Walter BJ, Arndt TL, Richter RJ, Shih DM, Tward A, Lusis AJ, Jack RM, Costa LG, Furlong CE. PMID: 12777966.
      View in: PubMed   Mentions: 53     Fields:    Translation:HumansAnimals
    40. Decreased atherosclerotic lesion formation in human serum paraoxonase transgenic mice. Circulation. 2002 Jul 23; 106(4):484-90. Tward A, Xia YR, Wang XP, Shi YS, Park C, Castellani LW, Lusis AJ, Shih DM. PMID: 12135950.
      View in: PubMed   Mentions: 96     Fields:    Translation:HumansAnimals
    41. MSJAMA. From grave robbing to gifting: cadaver supply in the United States. JAMA. 2002 Mar 06; 287(9):1183. Tward AD, Patterson HA. PMID: 11879122.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    42. Catalytic efficiency determines the in-vivo efficacy of PON1 for detoxifying organophosphorus compounds. Pharmacogenetics. 2000 Dec; 10(9):767-79. Li WF, Costa LG, Richter RJ, Hagen T, Shih DM, Tward A, Lusis AJ, Furlong CE. PMID: 11191881.
      View in: PubMed   Mentions: 65     Fields:    Translation:HumansAnimalsCells
    43. Cancer risk in ATM heterozygotes: a model of phenotypic and mechanistic differences between missense and truncating mutations. Mol Genet Metab. 1999 Dec; 68(4):419-23. Gatti RA, Tward A, Concannon P. PMID: 10607471.
      View in: PubMed   Mentions: 47     Fields:    Translation:Humans
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