Geoffrey R Oxnard, MD

Associate Professor, Medicine

Geoffrey Oxnard


Geoffrey Oxnard is a thoracic oncologist at Dana-Farber Cancer Institute and an Associate Professor of Medicine at Harvard Medical School. The aims of Dr. Oxnard’s research are to develop clinical applications for cancer genotyping technologies to advance precision cancer care.

Dr. Oxnard has published extensively on sensitivity and resistance to EGFR kinase inhibitors in lung cancer with a focus on the clinical biology of the EGFR T790M mutation. More recently his research has focused on genomic analysis of plasma cell-free DNA as a diagnostic to assist in treatment planning, response monitoring, and cancer detection.

Dr. Oxnard received his BA in chemistry from Harvard University and his MD from the University of Chicago-Pritzker School of Medicine. He served his residency in internal medicine at Massachusetts General Hospital and completed his fellowship in medical oncology at Memorial Sloan-Kettering Cancer Center, joining the Dana-Farber faculty in 2011.


  • University of Chicago, MD
  • Harvard University, AB


  • Published on 6/3/2024

    Rolfo CD, Madison RW, Pasquina LW, Brown DW, Huang Y, Hughes JD, Graf RP, Oxnard GR, Husain H. Measurement of ctDNA Tumor Fraction Identifies Informative Negative Liquid Biopsy Results and Informs Value of Tissue Confirmation. Clin Cancer Res. 2024 Jun 03; 30(11):2452-2460. PMID: 38526394.

    Read at: PubMed
  • Published on 3/1/2024

    Yorio J, Lofgren KT, Lee JK, Tolba K, Oxnard GR, Schrock AB, Huang RSP, Brisbin L. Association of Timely Comprehensive Genomic Profiling With Precision Oncology Treatment Use and Patient Outcomes in Advanced Non-Small-Cell Lung Cancer. JCO Precis Oncol. 2024 Mar; 8:e2300292. PMID: 38452312.

    Read at: PubMed
  • Published on 2/29/2024

    Mata DA, Lee JK, Shanmugam V, Marcus CB, Schrock AB, Williams EA, Ritterhouse LL, Hickman RA, Janovitz T, Patel NR, Kroger BR, Ross JS, Mirza KM, Oxnard GR, Vergilio JA, Elvin JA, Benhamida JK, Decker B, Xu ML. Liquid biopsy-based circulating tumour (ct)DNA analysis of a spectrum of myeloid and lymphoid malignancies yields clinically actionable results. Histopathology. 2024 Jun; 84(7):1224-1237. PMID: 38422618.

    Read at: PubMed
  • Published on 2/24/2024

    Mack PC, Keller-Evans RB, Li G, Lofgren KT, Schrock AB, Trabucco SE, Allen JM, Tolba K, Oxnard GR, Huang RSP. Real-World Clinical Performance of a DNA-Based Comprehensive Genomic Profiling Assay for Detecting Targetable Fusions in Nonsquamous NSCLC. Oncologist. 2024 Feb 24. PMID: 38401173.

    Read at: PubMed
  • Published on 2/16/2024

    Kasi PM, Lee JK, Pasquina LW, Decker B, Vanden Borre P, Pavlick DC, Allen JM, Parachoniak C, Quintanilha JCF, Graf RP, Schrock AB, Oxnard GR, Lovly CM, Tukachinsky H, Subbiah V. Circulating Tumor DNA Enables Sensitive Detection of Actionable Gene Fusions and Rearrangements Across Cancer Types. Clin Cancer Res. 2024 Feb 16; 30(4):836-848. PMID: 38060240.

    Read at: PubMed
  • Published on 1/1/2024

    Russo A, Lee JK, Pasquina LW, Del Re M, Dilks HH, Murugesan K, Madison RW, Lee Y, Schrock AB, Comment L, Dietrich M, Oxnard GR, Rolfo C. Liquid Biopsy of Lung Cancer Before Pathological Diagnosis Is Associated With Shorter Time to Treatment. JCO Precis Oncol. 2024 Jan; 8:e2300535. PMID: 38295321.

    Read at: PubMed
  • Published on 12/29/2023

    Burns L, Tukachinsky H, Raskina K, Huang RSP, Schrock AB, Sands J, Kulke MH, Oxnard GR, Tapan U. Real-World comprehensive genomic profiling data for diagnostic clarity in pulmonary Large-Cell neuroendocrine carcinoma. Lung Cancer. 2024 Feb; 188:107454. PMID: 38159439.

    Read at: PubMed
  • Published on 11/30/2023

    He J, Kalinava N, Doshi P, Pavlick DC, Albacker LA, Ebot EM, Tukachinsky H, Pratt J, Fusaro G, Oxnard GR, Green G, Fabrizio D, Baden J. Evaluation of tissue- and plasma-derived tumor mutational burden (TMB) and genomic alterations of interest in CheckMate 848, a study of nivolumab combined with ipilimumab and nivolumab alone in patients with advanced or metastatic solid tumors with high TMB. J Immunother Cancer. 2023 Nov 30; 11(11). PMID: 38035725.

    Read at: PubMed
  • Published on 11/14/2023

    Pellini B, Madison RW, Childress MA, Miller ST, Gjoerup O, Cheng J, Huang RSP, Krainock M, Gupta P, Zou W, Shames DS, Moshkevich S, Ballinger M, Liu MC, Young A, Srivastava MK, Oxnard GR, Socinski MA. Circulating Tumor DNA Monitoring on Chemo-immunotherapy for Risk Stratification in Advanced Non-Small Cell Lung Cancer. Clin Cancer Res. 2023 Nov 14; 29(22):4596-4605. PMID: 37702716.

    Read at: PubMed
  • Published on 10/23/2023

    Oxnard GR, Chen R, Pharr JC, Koeller DR, Bertram AA, Dahlberg SE, Rainville I, Shane-Carson K, Taylor KA, Sable-Hunt A, Sholl LM, Teerlink CC, Thomas A, Cannon-Albright LA, Fay AP, Ashton-Prolla P, Yang H, Salvatore MM, Addario BJ, Jänne PA, Carbone DP, Wiesner GL, Garber JE. Germline EGFR Mutations and Familial Lung Cancer. J Clin Oncol. 2023 Dec 01; 41(34):5274-5284. PMID: 37579253.

    Read at: PubMed

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