Skip Navigation
Find a Doctor


Photo of Dr. Malcolm Brock

Malcolm V Brock, MD

Medical Director, Center for Sweat Disorders
Associate Professor of Surgery
Appointment Phone


Main Location

The Johns Hopkins Hospital

View All Locations
Out-of-State & International Patients +
Out of State Patients

Call 410-464-6641 (8a.m. to 6p.m., EST, Mon-Fri)

Learn more about our out-of-state patient services »

International Patients

Call +1-410-502-7683 (7a.m. to 6p.m., EST, Mon-Fri)

Learn more about our international patient services »


  • Medical Director, Center for Sweat Disorders
  • Director of Clinical and Translational Research in Thoracic Surgery
  • Associate Professor of Surgery
  • Associate Professor of Oncology

Centers & Institutes

  • Esophageal Cancer Program
  • Lung Cancer Program
  • Sidney Kimmel Comprehensive Cancer Center
  • Sweat Disorders, Center for


Endsocopic Thoracic Sympathectomy (ETS), Esophageal Cancer, Hyperhidrosis, Lung Cancer, Mesothelioma, Thoracic Surgery

Research Interests

Epigenetics research for cancer treatment; Tumor Biology of Lung and Esophageal Cancer; Biomarkers as predictors of cancer detection; Prognosis and Chemotherapy Sensitivity; Hyperhidrosis; Translating Basic Research into the Clinic


Malcolm V. Brock, M.D., a graduate of the Johns Hopkins University School of Medicine, the Johns Hopkins General Surgical residency program and the Johns Hopkins fellowship in Cardiothoracic Surgery, is a specialist in thoracic oncology, and is an Associate Professor of Surgery and Oncology at Johns Hopkins. In additional to clinical thoracic oncology, his clinical interests include surgery for palmar, axillary and pedal hyperhydrosis.

Board-certified in General as well as Thoracic Surgery, Dr Brock is a surgeon who conducts cancer research at the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins specializing in bringing innovative basic, bench top research to the clinic and to the bedside. His main research interests are in developing novel molecular biomarkers for solid tumors that can help clinicians diagnose cancer earlier and treat it more effectively. Recently, his laboratory utilized a basic research DNA technique in the clinic to predict patients who will develop recurrent lung cancer even after successful surgery, and to predict patients with esophageal cancer who will be sensitive to certain chemotherapeutic drugs. This work was recently recognized for publication in the New England Journal of Medicine. Dr Brock has published over 70 original research papers, book chapters and review articles, has presented often at national and international conferences, and has been the recipient of research funding from the National Institutes of Health (NIH), the Thoracic Surgery Foundation for Research Excellence, the American College of Surgery Oncology Group as well as the Society of Surgical Oncology.


  • English
  • Japanese

Additional Resources

Additional Resources +
  • Education +


    • Johns Hopkins University School of Medicine (Baltimore MD ) (1991)


    • Johns Hopkins University School of Medicine / Surgery (Baltimore MD ) (2000)


    • Thoracic Surgery, American Board of Thoracic Surgery (2003)
  • Research & Publications +

    Selected Publications

    Research Summary

    Dr. Brock's research has focused primarily on developing and clinically applying molecular biomarkers, namely DNA methylation, to facilitate the early detection, accurate prognosis and specific chemosensitivity of lung and esophageal cancers. Current projects include using DNA methylation as a more accurate molecular indicator of lymph micrometases in a large cohort of lung cancer patients and as a means of predicting sensitivity of esophageal cancer to neoadjuvant chemotherapy based on endoscopic biopsy samples. Dr. Brock actively collaborates with Drs. Stephen Baylin and James Herman in the Division of Tumor Biology in the Cancer Center. Recently, Dr. Brock has received NIH funding to investigate the rising incidence of lung cancer in HIV patients and has begun both a clinical study and a tumor-profiling project in this regard. Finally, the Brock laboratory has developed large relational databases of lung and esophageal patients with matching biological samples to validate biomarker discovery.

    Journal Citations

    Brock, M.V.; Hooker, C.M.; Engels, E.A.; Moore, R.D.; Gillison, M.L.; Alberg, A.J.; Keruly, J.C.; Yang, S.C.; Heitmiller, R.F.; Baylin, S.B.; Herman, J.G.; Brahmer, J.R. Delayed diagnosis and elevated mortality in an urban population with HIV and lung cancer: implications for patient care. J Acquir Immune Defic Syndr. 2006 Sep;43(1):47-55.

    Chan, C.W.; Crafton, E.; Fan, H.N.; Flook, J.; Yoshimura, K.; Skarica, M.; Brockstedt, D.; Dubensky, T.W.; Stins, M.F.; Lanier, L.L.; Pardoll, D.M.; Housseau, F. Interferon-producing killer dendritic cells provide a link between innate and adaptive immunity. Nat Med. 2006 Feb;12(2):207-213.

    Engels, E.A.; Brock, M.V.; Chen, J.; Hooker, C.M.; Gillison, M.; Moore, R.D. Elevated incidence of lung cancer among HIV-infected individuals. J Clin Oncol. 2006 Mar 20;24(9):1383-1388.

    Gallia, G.L.; Rand, V.; Siu, I.M.; Eberhart, C.G.; James, C.D.; Marie, S.K.; Oba-Shinjo, S.M.; Carlotti, C.G.; Caballero, O.L.; Simpson, A.J.; Brock, M.V.; Massion, P.P.; Carson, B.S., Sr.; Riggins, G.J. PIK3CA gene mutations in pediatric and adult glioblastoma multiforme. Mol Cancer Res. 2006 Oct;4(10):709-714.

    Guo, M.; House, M.G.; Akiyama, Y.; Qi, Y.; Capagna, D.; Harmon, J.; Baylin, S.B.; Brock, M.V.; Herman, J.G. Hypermethylation of the GATA gene family in esophageal cancer. Int J Cancer. 2006 Nov 1;119(9):2078-2083.

    Guo, M.; Ren, J.; House, M.G.; Qi, Y.; Brock, M.V.; Herman, J.G. Accumulation of promoter methylation suggests epigenetic progression in squamous cell carcinoma of the esophagus. Clin Cancer Res. 2006 Aug 1;12(15):4515-4522.

    Machida, E.O.; Brock, M.V.; Hooker, C.M.; Nakayama, J.; Ishida, A.; Amano, J.; Picchi, M.A.; Belinsky, S.A.; Herman, J.G.; Taniguchi, S.; Baylin, S.B. Hypermethylation of ASC/TMS1 is a sputum marker for late-stage lung cancer. Cancer Res. 2006 Jun 15;66(12):6210-6218.

    Montgomery, E.; Mamelak, A.J.; Gibson, M.; Maitra, A.; Sheikh, S.; Amr, S.S.; Yang, S.; Brock, M.; Forastiere, A.; Zhang, S.; Murphy, K.M.; Berg, K.D. Overexpression of claudin proteins in esophageal adenocarcinoma and its precursor lesions. Appl Immunohistochem Mol Morphol. 2006 Mar;14(1):24-30.

    Singh, A.; Misra, V.; Thimmulappa, R.K.; Lee, H.; Ames, S.; Hoque, M.O.; Herman, J.G.; Baylin, S.B.; Sidransky, D.; Gabrielson, E.; Brock, M.V.; Biswal, S. Dysfunctional KEAP1-NRF2 interaction in non-small-cell lung cancer. PLoS Med. 2006 Oct;3(10):e420.

    Weiss, E.S.; Doty, J.; Brock, M.V.; Halvorson, L.; Yang, S.C. A case of ectopic parathyroid hormone production by a pulmonary neoplasm. J Thorac Cardiovasc Surg. 2006 Apr;131(4):923-924.

    Yoshimura, K.; Jain, A.; Allen, H.E.; Laird, L.S.; Chia, C.Y.; Ravi, S.; Brockstedt, D.G.; Giedlin, M.A.; Bahjat, K.S.; Leong, M.L.; Slansky, J.E.; Cook, D.N.; Dubensky, T.W.; Pardoll, D.M.; Schulick, R.D. Selective targeting of antitumor immune responses with engineered live-attenuated Listeria monocytogenes. Cancer Res. 2006 Jan 15;66(2):1096-1104.

    Brock, M.V.; Herman, J.G.; Baylin, S.B. Cancer as a manifestation of aberrant chromatin structure. Cancer J. 2007 Jan-Feb;13(1):3-8.

    Engel, L.S.; Laden, F.; Andersen, A.; Strickland, P.T.; Blair, A.; Needham, L.L.; Barr, D.B.; Wolff, M.S.; Helzlsouer, K.; Hunter, D.J.; Lan, Q.; Cantor, K.P.; Comstock, G.W.; Brock, J.W.; Bush, D.; Hoover, R.N.; Rothman, N. Polychlorinated biphenyl levels in peripheral blood and non-Hodgkin's lymphoma: a report from three cohorts. Cancer Res. 2007 Jun 1;67(11):5545-5552.

    Gibbons, M.C.; Brock, M.; Alberg, A.J.; Glass, T.; LaVeist, T.A.; Baylin, S.; Levine, D.; Fox, C.E. The sociobiologic integrative model (SBIM): enhancing the integration of sociobehavioral, environmental, and biomolecular knowledge in urban health and disparities research. J Urban Health. 2007 Mar;84(2):198-211.

    Goldberg, M.V.; Maris, C.H.; Hipkiss, E.L.; Flies, A.S.; Zhen, L.; Tuder, R.M.; Grosso, J.F.; Harris, T.J.; Getnet, D.; Whartenby, K.A.; Brockstedt, D.G.; Dubensky, T.W., Jr.; Chen, L.; Pardoll, D.M.; Drake, C.G. Role of PD-1 and its ligand, B7-H1, in early fate decisions of CD8 T cells. Blood. 2007 Jul 1;110(1):186-192.

    Guo, M.; House, M.G.; Suzuki, H.; Ye, Y.; Brock, M.V.; Lu, F.; Liu, Z.; Rustgi, A.K.; Herman, J.G. Epigenetic silencing of CDX2 is a feature of squamous esophageal cancer. Int J Cancer. 2007 Sep 15;121(6):1219-1226.

    Liu, C.; Zhou, S.; Begum, S.; Sidransky, D.; Westra, W.H.; Brock, M.; Califano, J.A. Increased expression and activity of repair genes TDP1 and XPF in non-small cell lung cancer. Lung Cancer. 2007 Mar;55(3):303-311.

    Madar, I.; Bencherif, B.; Lever, J.; Heitmiller, R.F.; Yang, S.C.; Brock, M.; Brahmer, J.; Ravert, H.; Dannals, R.; Frost, J.J. Imaging delta- and mu-opioid receptors by PET in lung carcinoma patients. J Nucl Med. 2007 Feb;48(2):207-213.

    Sherwood, J.T.; Brock, M.V. Lung cancer: new surgical approaches. Respirology. 2007 May;12(3):326-332.

    Taube, J.M.; Askin, F.B.; Brock, M.V.; Westra, W. Impact of elastic staining on the staging of peripheral lung cancers. Am J Surg Pathol. 2007 Jun;31(6):953-956.

    Brock, M.V.; Hooker, C.M.; Ota-Machida, E.; Han, Y.; Guo, M.; Ames, S.; Glockner, S.; Piantadosi, S.; Gabrielson, E.; Pridham, G.; Pelosky, K.; Belinsky, S.A.; Yang, S.C.; Baylin, S.B.; Herman, J.G. DNA methylation markers and early recurrence in stage I lung cancer. N Engl J Med. 2008 Mar 13;358(11):1118-1128.

    Daniels, J.A.; Gibson, M.K.; Xu, L.; Sun, S.; Canto, M.I.; Heath, E.; Wang, J.; Brock, M.; Montgomery, E. Gastrointestinal tract epithelial changes associated with taxanes: marker of drug toxicity versus effect. Am J Surg Pathol. 2008 Mar;32(3):473-477.

    Forastiere, A.A.; Ang, K.K.; Brizel, D.; Brockstein, B.E.; Burtness, B.A.; Cmelak, A.J.; Colevas, A.D.; Dunphy, F.; Eisele, D.W.; Goepfert, H.; Hicks, W.L., Jr.; Kies, M.S.; Lydiatt, W.M.; Maghami, E.; Martins, R.; McCaffrey, T.; Mittal, B.B.; Pfister, D.G.; Pinto, H.A.; Posner, M.R.; Ridge, J.A.; Samant, S.; Schuller, D.E.; Shah, J.P.; Spencer, S.; Trotti, A., 3rd; Weber, R.S.; Wolf, G.T.; Worden, F. Head and neck cancers. J Natl Compr Canc Netw. 2008 Aug;6(7):646-695.

    Guo, M.; Ren, J.; Brock, M.V.; Herman, J.G.; Carraway, H.E. Promoter methylation of HIN-1 in the progression to esophageal squamous cancer. Epigenetics. 2008 Nov;3(6):336-341.

    Kleinberg, L.R.; Brock, M.V.; Jagannath, S.B.; Forastiere, A.A. Cancer of the Esophagus. In: Abeloff, M.e.a., editor. 4th Edition ed, Clinical Oncology. New York, NY: Churchill-Livingstone; 2008.

    Meguid, R.A.; Brooke, B.S.; Chang, D.C.; Sherwood, J.T.; Brock, M.V.; Yang, S.C. Are surgical outcomes for lung cancer resections improved at teaching hospitals? Ann Thorac Surg. 2008 Mar;85(3):1015-1024; discussion 1024-1015.

    Argiris, A.; Buchanan, A.; Brockstein, B.; Kolesar, J.; Ghebremichael, M.; Pins, M.; Hahn, K.; Axelrod, R.; Forastiere, A. Docetaxel and irinotecan in recurrent or metastatic head and neck cancer: a phase 2 trial of the Eastern Cooperative Oncology Group. Cancer. 2009 Oct 1;115(19):4504-4513.

    Jiang, T.; Collins, B.J.; Jin, N.; Watkins, D.N.; Brock, M.V.; Matsui, W.; Nelkin, B.D.; Ball, D.W. Achaete-scute complex homologue 1 regulates tumor-initiating capacity in human small cell lung cancer. Cancer Res. 2009 Feb 1;69(3):845-854.

    Meguid, R.A.; Hooker, C.M.; Taylor, J.T.; Kleinberg, L.R.; Cattaneo, S.M., 2nd; Sussman, M.S.; Yang, S.C.; Heitmiller, R.F.; Forastiere, A.A.; Brock, M.V. Recurrence after neoadjuvant chemoradiation and surgery for esophageal cancer: does the pattern of recurrence differ for patients with complete response and those with partial or no response? J Thorac Cardiovasc Surg. 2009 Dec;138(6):1309-1317.

    Meguid, R.A.; Weiss, E.S.; Chang, D.C.; Brock, M.V.; Yang, S.C. The effect of volume on esophageal cancer resections: what constitutes acceptable resection volumes for centers of excellence? J Thorac Cardiovasc Surg. 2009 Jan;137(1):23-29.

    Tjiang, T.; B.J., C.; Jin, N.; Brock, M.V.; Watkins, D.N.; Matsui, W.; Nelkin, B.D.; Ball, D.W. ASCL1 regulates CD133 and tumor-initiating capacity of SCLC. Cancer Research. 2009 (In Press).

    Bailey, V.J.; Keeley, B.P.; Zhang, Y.; Ho, Y.P.; Easwaran, H.; Brock, M.V.; Pelosky, K.L.; Carraway, H.E.; Baylin, S.B.; Herman, J.G.; Wang, T.H. Enzymatic incorporation of multiple dyes for increased sensitivity in QD-FRET sensing for DNA methylation detection. Chembiochem. 2010 Jan 4;11(1):71-74.

    Bailey, V.J.; Zhang, Y.; Keeley, B.P.; Yin, C.; Pelosky, K.L.; Brock, M.; Baylin, S.B.; Herman, J.G.; Wang, T.H. Single-tube analysis of DNA methylation with silica superparamagnetic beads. Clin Chem. 2010 Jun;56(6):1022-1025.

    Bhattacharya, R.; Kowalski, J.; Larson, A.R.; Brock, M.; Alani, R.M. Id1 promotes tumor cell migration in nonsmall cell lung cancers. J Oncol. 2010;2010:856105.

    Brock, M.V.; Bouvet, M. Writing a successful NIH Mentored Career Development Grant (K award): hints for the junior faculty surgeon. Ann Surg. 2010 Jun;251(6):1013-1017

    Chiao, E.Y.; Dezube, B.J.; Krown, S.E.; Wachsman, W.; Brock, M.V.; Giordano, T.P.; Mitsuyasu, R.; Pantanowitz, L. Time for oncologists to opt in for routine opt-out HIV testing? JAMA. 2010 Jul 21;304(3):334-339

    Liu, K.J.; Brock, M.V.; Shih Ie, M.; Wang, T.H. Decoding circulating nucleic acids in human serum using microfluidic single molecule spectroscopy. J Am Chem Soc. 2010 Apr 28;132(16):5793-5798

    Meguid, R.A.; Hooker, C.M.; Harris, J.; Xu, L.; Westra, W.H.; Sherwood, J.T.; Sussman, M.; Cattaneo, S.M., 2nd; Shin, J.; Cox, S.; Christensen, J.; Prints, Y.; Yuan, N.; Zhang, J.; Yang, S.C.; Brock, M.V. Long-term survival outcomes by smoking status in surgical and nonsurgical patients with non-small cell lung cancer: comparing never smokers and current smokers. Chest. 2010 Sep;138(3):500-509.

    Tseng, E.E.; Brock, M.V.; Lange, M.S.; Troncoso, J.C.; Blue, M.E.; Lowenstein, C.J.; Johnston, M.V.; Baumgartner, W.A. Glutamate excitotoxicity mediates neuronal apoptosis after hypothermic circulatory arrest. Ann Thorac Surg. 2010 Feb;89(2):440-445
  • Academic Affiliations & Courses +
  • Activities & Honors +
  • Videos & Media +


    Meet Our Expert - Dr. Malcolm Brock

    Dr. Malcolm Brock, a thoracic surgeon, is the director of Clinical and Translational Research in Thoracic Surgery and themedical co-director of the Center for Sweat Disorders. He specializes in the surgical treatment of lung and esophageal cancer, as well as the treatment of hyperhidrosis, or excessive sweating.

    Microwave Thermolysis for Excessive Sweating

    Watch Johns Hopkins Center for Sweat Disorders expert Malcolm Brock discuss a noninvasive, nonsurgical treatment for excessive axillary (underarm) sweating called microwave thermolysis. For more information, visit

    Do You Suffer From Excessive Sweating?

  • Events +
  • Contact & Locations +


    The Johns Hopkins Hospital
    600 N. Wolfe Street
    Sheikh Zayed Tower
    Baltimore, MD 21287
    Phone: 410-614-3891
    Appointment Phone: 443-997-1508
    Fax: 410-614-9428
    Location Map


    • Surgery

Is This You? Edit Profile


© The Johns Hopkins University, The Johns Hopkins Hospital, and Johns Hopkins Health System. All rights reserved.