Katherine Van Loon, MD, MPH

Gastrointestinal oncologist

Dr. Katherine Van Loon is a gastrointestinal cancer specialist, with a particular interest in colon cancer. Van Loon received a master's degree in public health (M.P.H.) from the Yale University School of Epidemiology and Public Health before attending the Medical College of Georgia. She completed a residency in internal medicine at Beth Israel Deaconess Medical Center, Harvard Medical School. She came to UCSF for her fellowship in oncology in 2009.

With her background in public health, Van Loon's research is focused on epidemiology and outcomes research in gastrointestinal malignancies. She has a longstanding interest in global health, and her research has also focused on the epidemiology of gastrointestinal cancers in the developing world.

Van Loon is a member of the American Society of Clinical Oncology. She received a Young Investigator Award from the ASCO Conquer Cancer Foundation in 2012.


Gastrointestinal Medical Oncology Clinic
1825 Fourth St., Fourth Floor
San Francisco, CA 94158
Phone: (415) 353-9888
Fax: (415) 353-9931

Hours: Monday to Friday
8 a.m. – 5 p.m.

Gastrointestinal Oncology Survivorship Program
1825 Fourth St., Fourth Floor
San Francisco, CA 94143
Phone: (415) 353-9888
Fax: (415) 353-9931

Pancreas Center
1825 Fourth St., Fourth Floor
San Francisco, CA 94158
Patient Information and Appointments: (415) 353-9888
Administrative Inquiries: (415) 476-3270
Fax: (415) 353-9931

Hours: Monday to Friday
8 a.m. — 5 p.m.

Conditions & Treatments

Board Certification

Internal Medicine
Medical Oncology

More about Katherine Van Loon


Medical College of Georgia 2006


Beth Israel Deaconess Medical Center, Harvard Medical School, Internal Medicine 2009


UCSF Medical Center, Oncology 2011

Selected Research and Publications

  1. Van Loon K, Mwachiro MM, Abnet CC et al.. The African Esophageal Cancer Consortium: A Call to Action. Journal of Global Oncology. 2018.
  2. Murphy G, McCormack V, Abedi-Ardekani B, Arnold M, Camargo MC, Dar NA, Dawsey SM, Etemadi A, Fitzgerald RC, Fleischer DE, Freedman ND, Goldstein AM, Gopal S, Hashemian M, Hu N, Hyland PL, Kaimila B, Kamangar F, Malekzadeh R, Mathew CG, Menya D, Mulima G, Mwachiro MM, Mwasamwaja A, Pritchett N, Qiao YL, Ribeiro-Pinto LF, Ricciardone M, Schüz J, Sitas F, Taylor PR, Van Loon K, Wang SM, Wei WQ, Wild CP, Wu C, Abnet CC, Chanock SJ, Brennan P. International cancer seminars: a focus on esophageal squamous cell carcinoma. Ann Oncol. 2017 Sep 01; 28(9):2086-2093.
  3. Mmbaga, EJ, Deardorff, KV, Mushi, B, Mgisha, W, Merritt, M, Hiatt, RA, Mwaiselage, J, Zhang, L, Van Loon, K. Characteristics of Esophageal Cancer Cases in Tanzania. Journal of Global Oncology. 2017.
  4. Mulvey CK, Van Loon K, Bergsland EK, Masharani U, Nakakura EK. Complicated Case Presentation: Management of Pancreatic Neuroendocrine Tumors in Multiple Endocrine Neoplasia Type 1. Pancreas. 2017 Mar; 46(3):416-426.
  5. Atreya CE, Greene C, McWhirter RM, Ikram NS, Allen IE, Van Loon K, Venook AP, Yeh BM, Behr SC. Differential Radiographic Appearance of BRAF V600E-Mutant Metastatic Colorectal Cancer in Patients Matched by Primary Tumor Location. J Natl Compr Canc Netw. 2016 Dec; 14(12):1536-1543.
  6. Fidelman N, Kerlan RK, Hawkins RA, Pampaloni M, Taylor AG, Kohi MP, Kolli KP, Atreya CE, Bergsland EK, Kelley RK, Ko AH, Korn WM, Van Loon K, McWhirter RM, Luan J, Johanson C, Venook AP. Radioembolization with 90Y glass microspheres for the treatment of unresectable metastatic liver disease from chemotherapy-refractory gastrointestinal cancers: final report of a prospective pilot study. J Gastrointest Oncol. 2016 Dec; 7(6):860-874.
  7. Pant S, Martin LK, Geyer S, Wei L, Van Loon K, Sommovilla N, Zalupski M, Iyer R, Fogelman D, Ko AH, Bekaii-Saab T. Treatment-related Hypertension as a Pharmacodynamic Biomarker for the Efficacy of Bevacizumab in Advanced Pancreas Cancer: A Pooled Analysis of 4 Prospective Trials of Gemcitabine-based Therapy With Bevacizumab. Am J Clin Oncol. 2016 Dec; 39(6):614-618.
  8. Zukotynski K, Jadvar H, Hope T, Subramaniam RM, Van Loon K, Varma M, Niederkohr RD. SNMMI Comment on the 2016 Society of Surgical Oncology "Choosing Wisely" Recommendation on the Use of PET/CT in Colorectal Cancer. J Nucl Med. 2017 Jan; 58(1):11-12.
  9. Ursem C, Van Loon K, Venook A. Adjuvant Therapy Trials. Cancer J. 2016 May-Jun; 22(3):196-8.
  10. Papadopoulos KP, Kelley RK, Tolcher AW, Razak AR, Van Loon K, Patnaik A, Bedard PL, Alfaro AA, Beeram M, Adriaens L, Brownstein CM, Lowy I, Kostic A, Trail PA, Gao B, DiCioccio AT, Siu LL. A Phase I First-in-Human Study of Nesvacumab (REGN910), a Fully Human Anti-Angiopoietin-2 (Ang2) Monoclonal Antibody, in Patients with Advanced Solid Tumors. Clin Cancer Res. 2016 Mar 15; 22(6):1348-55.
  11. Zill OA, Greene C, Sebisanovic D, Siew LM, Leng J, Vu M, Hendifar AE, Wang Z, Atreya CE, Kelley RK, Van Loon K, Ko AH, Tempero MA, Bivona TG, Munster PN, Talasaz A, Collisson EA. Cell-Free DNA Next-Generation Sequencing in Pancreatobiliary Carcinomas. Cancer Discov. 2015 Oct; 5(10):1040-8.
  12. Cheng ML, Zhang L, Borok M, Chokunonga E, Dzamamala C, Korir A, Wabinga HR, Hiatt RA, Parkin DM, Van Loon K. The incidence of oesophageal cancer in Eastern Africa: identification of a new geographic hot spot? Cancer Epidemiol. 2015 Apr; 39(2):143-9.
  13. Van Loon K, Zhang L, Keiser J, Carrasco C, Glass K, Ramirez MT, Bobiak S, Nakakura EK, Venook AP, Shah MH, Bergsland EK. Bone metastases and skeletal-related events from neuroendocrine tumors. Endocr Connect. 2015 Mar; 4(1):9-17.
  14. Van Loon K, Espinoza AM, Fogelman DR, Wolff RA, Javle MM, Iyer RV, Picozzi VJ, Martin LK, Bekaii-Saab T, Tempero MA, Foster NR, Kim GP, Ko AH. Should combination chemotherapy serve as the backbone in clinical trials of advanced pancreatic cancer? A pooled analysis of phase II trials of gemcitabine-containing doublets plus bevacizumab. Pancreas. 2014 Apr; 43(3):343-9.
  15. Pant S, Martin LK, Geyer S, Wei L, Van Loon K, Sommovilla N, Sommovilla N, Zalupski M, Iyer R, Fogelman D, Ko AH, Bekaii-Saab T. Baseline serum albumin is a predictive biomarker for patients with advanced pancreatic cancer treated with bevacizumab: a pooled analysis of 7 prospective trials of gemcitabine-based therapy with or without bevacizumab. Cancer. 2014 Jun 15; 120(12):1780-6.
  16. Van Loon K, Venook AP. Curable patient with metastatic colorectal cancer: balancing effective therapies and toxicities. J Clin Oncol. 2014 Apr 01; 32(10):991-6.
  17. Van Loon K, Venook AP. Biomarkers in colon cancer: the chasm between expectations and reality. Oncology (Williston Park). 2013 Aug; 27(8):758, 763.
  18. Van Loon K, Atreya CE, Kelley RK, Venook AP. Gene Profiling in Colon Cancer: How to Integrate Profiling into Practice. Personalized Medicine in Oncology. 2013; 2(4):204-11.
  19. Van Loon K, Wigler D, Niedzwiecki D, Venook AP, Fuchs C, Blanke C, Saltz L, Goldberg RM, Meyerhardt JA. Comparison of dietary and lifestyle habits among stage III and metastatic colorectal cancer patients: findings from CALGB 89803 and CALGB 80405. Clin Colorectal Cancer. 2013 Jun; 12(2):95-102.
  20. Van Loon K, Venook AP. Counterpoint: Adjuvant therapy in stage II colon cancer: pain not justified by the gain. J Natl Compr Canc Netw. 2012 Nov 01; 10(11):1379-86.

Publications are derived from MEDLINE/PubMed and provided by UCSF Profiles, a service of the Clinical & Translational Science Institute (CTSI) at UCSF. Researchers can make corrections and additions to their publications by logging on to UCSF Profiles.