prof. dr. G.D. Valk

Full Professor
prof. dr. G.D. Valk
  • Department of Endrocine Oncology

Research Programs

Strategic Program Cancer



Endocrinology and endocrine oncology are the main focus of the clinical activities of Gerlof Valk. (Neuro-) endocrine tumors diagnosis, treatment and follow-up, care for patients with Multiple Endocrine Neoplasia (MEN) and the standardization and continuous improvement of the national care for patients with MEN are his specific areas of expertise. Epidemiologic and translational research within the field of MEN related (pancreatic) neuroendocrine tumors is his main research focus including innovative treatment strategies and personalized cancer care.



2014 – today 

Internist-endocrinologist, professor of endocrinology with emphasis on endocrine tumors, head of section endocrinology, program director endocrinology residency


2007 – 2014  

Internist-endocrinologist, vice program director internal medicine residency


1997 – 2001  

Senior researcher, Institute for Extramural Medical Research (EMGO Institute), Free University Medical Centre



2007 Certification National Board of Internal Medicine and Endocrinology

2002 MSc Clinical Epidemiology

1997 PhD Thesis: ‘The diagnosing of diabetic polyneuropathy in daily clinical practice’. Free University Medical Centre, Amsterdam

1994 Certification National Board of General Practitioners

1990 MD (cum laude)


Side Activities

Scientific director of the Parelsnoer Institute (PSI)

National coordinator of the European Reference Network (ERN) Rare Endocrine Conditions

Member of the daily board of BijnierNET

Board member Dutch Society of Endrocrinology

Research Output (173)

Diagnostic and management strategies for pNETs in Von Hippel-Lindau:a systematic review

Ahmad Saya, Naber Myrthe R, Giles Rachel H, Valk Gerlof D, van Leeuwaarde Rachel S 1 jan 2021, In: Endocrine-Related Cancer. 28 , p. 151-160 10 p.

Clinical management of neuroendocrine neoplasms (NENs)

Casey Ruth T, Valk Gerlof D, Schalin-Jäntti Camilla, Grossman Ashley B, Thakker Rajesh V aug 2020, In: European Journal of Endocrinology. 183 , p. G79-G88

MEN1-related pancreatic NETs: identification of unmet clinical needs and future directives:CURRENT STATE-OF-THE-ART AND RESEARCH OPPORTUNITIES: MEN1-related pancreatic NETs: identification of unmet clinical needs and future directives

Pieterman C R C, Sadowski S M, Maxwell J E, Katz M H G, Lines K E, Heaphy C M, Tirosh A, Blau J E, Perrier N D, Lewis M A, Metzcar J P, Halperin D M, Thakker R V, Valk G D aug 2020, In: Endocrine-Related Cancer. 27 , p. T9-T25

PSMA PET/CT Identifies Intrapatient Variation in Salivary Gland Toxicity From Iodine-131 Therapy

Mohan Vineet, Vogel Wouter V, Valk Gerlof D, de Boer Jan P, Lam Marnix G E H, de Keizer Bart 4 jul 2020, In: Molecular Imaging. 19 7 p.

Efficacy of alpha-Blockers on Hemodynamic Control during Pheochromocytoma Resection: A Randomized Controlled Trial:A randomized controlled trial

Buitenwerf Edward, Osinga Thamara E., Timmers Henri J.L.M., Lenders Jacques W.M., Feelders Richard A., Eekhoff Elisabeth M.W., Haak Harm R., Corssmit Eleonora P.M., Bisschop Peter H.L.T., Valk Gerlof D., Veldman Ronald Groote, Dullaart Robin P.F., Links Thera P., Voogd Magiel F., Wietasch Götz J.K.G., Kerstens Michiel N., 1 jul 2020, In: Journal of Clinical Endocrinology and Metabolism. 105 , p. 2381-2391 11 p.

Adrenalectomy for Primary Aldosteronism:Significant Variability in Work-Up Strategies and Low Guideline Adherence in Worldwide Daily Clinical Practice

Vorselaars Wessel M C M, van Beek Dirk-Jan, Suurd Diederik P D, Postma Emily, Spiering Wilko, Borel Rinkes Inne H M, Valk Gerlof D, Vriens Menno R, 1 jun 2020, In: World Journal of Surgery. 44 , p. 1905-1915 11 p.

Prognostic factors for the outcome of nonfunctioning pancreatic neuroendocrine tumors in MEN1:a systematic review of literature

Sadowski S M, Pieterman C R C, Perrier N D, Triponez F, Valk G D jun 2020, In: Endocrine-Related Cancer. 27 , p. R145-R161

Clues for genetic anticipation in Multiple Endocrine Neoplasia type 1

van den Broek Medard F M, van Nesselrooij Bernadette P M, Pieterman Carolina C R, Verrijn Stuart Annemarie A, van de Ven Annenienke C, de Herder Wouter W, Dekkers Olaf M, Drent Madeleine L, Havekes Bas, Kerstens Michiel N, Bisschop Peter H, Valk Gerlof D 12 mei 2020, In: The Journal of clinical endocrinology and metabolism. 105 , p. E2491-E2500

Health-related quality of life in patients with Multiple Endocrine Neoplasia type 1

van Leeuwaarde Rachel S, Pieterman Carolina R C, May Anne M, Dekkers Olaf M, van der Horst-Schrivers Anouk N A, Hermus Ad R, de Herder Wouter, Drent Madeleine L, Bisschop Peter H, Havekes Bas, Vriens Menno R, Valk Gerlof D 4 mei 2020, In: Neuroendocrinology. 111 , p. 288-295 8 p.

Surgery for multiple endocrine neoplasia type 1-related insulinoma:long-term outcomes in a large international cohort

van Beek D J, Nell S, Verkooijen H M, Borel Rinkes I H M, Valk G D, Vriens M R, , 30 apr 2020, In: British Journal of Surgery. 107 , p. 1489-1499 11 p.

All research output

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