Dr. McFadden is an Assistant Professor of Internal Medicine and Biochemistry at UT Southwestern.  He obtained his MD and PhD degrees at UT Southwestern Medical Center and subsequently completed his post-graduate medical training at Harvard Medical School with internship and residency in Internal Medicine at Brigham and Women’s Hospital and Endocrinology at the Massachusetts General Hospital (MGH).  At MGH he was a member of the Center for Endocrine Tumors and a staff physician in the Thyroid Associates and Endocrine Tumor Genetics clinics. After completing postdoctoral work at Massachusetts Institute of Technology, he returned to UT Southwestern as an Assistant Professor in the Division of Endocrinology.  Dr. McFadden’s clinical interest is in the treatment of tumors arising from endocrine glands, including thyroid cancer.  He is a member of the American Thyroid Association and the International Thyroid Oncology Group, and has been awarded research grants from the National Institutes of Health, American Thyroid Association, the Disease Oriented Clinical Scholars (DOCS) program at UT Southwestern, and the Cancer Prevention and Research Institute of Texas (CPRIT).  His current research focuses on using genetic engineering and chemical screens to discover new treatments for cancer.


Medical School
UT Southwestern Medical School (2004)
Brigham and Women's Hospital (2005), Internal Medicine
Brigham and Women's Hospital (2006), Internal Medicine
Massachusetts General Hospital (2009), Endocrinology & Metabolism

Research Interest

  • Cancer Biology
  • Cancer Genetics
  • Targeted Therapies
  • Thyroid Cancer
  • Tumor Progression


Featured Publications LegendFeatured Publications

Thyroid cancer.
Cabanillas ME, McFadden DG, Durante C Lancet 2016 May
Small Cell Lung Cancer: Can Recent Advances in Biology and Molecular Biology Be Translated into Improved Outcomes?
Bunn PA, Minna JD, Augustyn A, Gazdar AF, Ouadah Y, Krasnow MA, Berns A, Brambilla E, Rekhtman N, Massion PP, Niederst M, Peifer M, Yokota J, Govindan R, Poirier JT, Byers LA, Wynes MW, McFadden DG, MacPherson D, Hann CL, Farago AF, Dive C, Teicher BA, Peacock CD, Johnson JE, Cobb MH, Wendel HG, Spigel D, Sage J, Yang P, Pietanza MC, Krug LM, Heymach J, Ujhazy P, Zhou C, Goto K, Dowlati A, Christensen CL, Park K, Einhorn LH, Edelman MJ, Giaccone G, Gerber DE, Salgia R, Owonikoko T, Malik S, Karachaliou N, Gandara DR, Slotman BJ, Blackhall F, Goss G, Thomas R, Rudin CM, Hirsch FR J Thorac Oncol 2016 Apr 11 4 453-74
The comparative pathology of genetically engineered mouse models for neuroendocrine carcinomas of the lung.
Gazdar AF, Savage TK, Johnson JE, Berns A, Sage J, Linnoila RI, MacPherson D, McFadden DG, Farago A, Jacks T, Travis WD, Brambilla E J Thorac Oncol 2015 Feb
Redifferentiation of iodine-refractory BRAF V600E-mutant metastatic papillary thyroid cancer with dabrafenib.
Rothenberg SM, McFadden DG, Palmer EL, Daniels GH, Wirth LJ Clin. Cancer Res. 2014 Dec
Identification of oncogenic mutations and gene fusions in the follicular variant of papillary thyroid carcinoma.
McFadden DG, Dias-Santagata D, Sadow PM, Lynch KD, Lubitz C, Donovan SE, Zheng Z, Le L, Iafrate AJ, Daniels GH J. Clin. Endocrinol. Metab. 2014 Nov 99 11 E2457-62
Integrated genomic characterization of papillary thyroid carcinoma.
Cell 2014 Oct 159 3 676-90
Combined BRAF(V600E)- and SRC-inhibition induces apoptosis, evokes an immune response and reduces tumor growth in an immunocompetent orthotopic mouse model of anaplastic thyroid cancer.
Vanden Borre P, Gunda V, McFadden DG, Sadow PM, Varmeh S, Bernasconi M, Parangi S Oncotarget 2014 Jun 5 12 3996-4010
The next generation of orthotopic thyroid cancer models: immunocompetent orthotopic mouse models of BRAF V600E-positive papillary and anaplastic thyroid carcinoma.
Vanden Borre P, McFadden DG, Gunda V, Sadow PM, Varmeh S, Bernasconi M, Jacks T, Parangi S Thyroid 2014 Apr 24 4 705-14

Honors & Awards

  • CPRIT Scholar
    UT Southwestern (2014)
  • Disease Oriented Clinical Scholar
    UT Southwestern (2014)
  • "Rookie of the Year" Philanthropy Award
    Massachusetts General Hospital (2013)
  • Scholar in Training Award
    Bristol-Myers Squibb (2013)

Professional Associations/Affiliations

  • International Thyroid Oncology Group (2014)
  • American Association for Cancer Research (2010)
  • American Thyroid Association (2007)
  • Alpha Omega Alpha (2004)