
Our Focus
Errors in chromosome segregation cause aneuploidy. ~80% of all human tumours are aneuploid, and they harbour subclones with different karyotypes. This strongly suggests that cancers experience ongoing chromosome mis segregations, a.k.a chromosomal instability (CIN), and that CIN is beneficial for cancer cells.
Central questions to research in the Kops lab are: 1) How do cells ensure high fidelity chromosome segregation? We use cell biological, structural and imaging techniques to examine the chromosomal structures and signalling pathways that promote successful cell division. Current focus is on the fibrous coronas of kinetochores and on centromeric chromatin architecture. 2) What are causes and consequences of CIN in cancer? We use three models: a) human organoids; b) a mouse model of CIN; c) various cell lines.
All questions are related to how cell division control mechanisms prevent tumour formation. The answers are sought through state-of-the-art approaches and extensive collaborations, with potential for clinical impact, all objectives of Oncode.
About Geert Kops

Geert Kops
My Research
Geert Kops obtained his PhD cum laude in 2001 from Utrecht University for his investigations into the oncogenic PI3K-PKB/Akt–FOXO pathway and its role in cellular proliferation. He then pursued postdoctoral studies in the lab of Don Cleveland at the Ludwig Institute for Cancer Research in La Jolla, USA, where he investigated molecular mechanisms of chromosome segregation. Geert returned to the Netherlands in 2005 as a group leader at UMC Utrecht, where he became Professor of Molecular Tumor Cell Biology in 2011. He was the head of the laboratory for Medical Oncology from 2011 to 2014, and has been the Scientific Director of Oncode Institute since 2018.
After a research sabbatical at the Fred Hutch Cancer Research Center in Seattle, USA, Geert joined the Hubrecht Institute in October 2015. His primary research interests include molecular mechanisms of chromosome segregation, evolution of cell division processes and the causes and consequences of chromosomal instability in cancer. Geert is the recipient of the KNCV gold medal 2014, the NVBMB prize 2004, and the Von Freyburg medal in 2006, and was elected to the Young Academy of Europe (YAE) in 2013. He was awarded NWO-Vidi and Vici grants in 2006 and 2013, respectively, ERC Starting and Synergy grants from the European Research Council in 2009 and 2019, respectively, and he is co-lead of the NWO Gravitation project IMAGINE!. Geert co-developed ‘De Gemene Deler’, a teaching module for high schools about molecular mechanisms, cells and cancer.
Awards
2022: NWO Gravitation award
2019: Cozzarelli Prize for PNAS paper of the year in Class II (Biological Sciences)
2016: PhD supervisor of the year (runner-up), Utrecht Life Sciences
2014: Gold Medal of the Royal Dutch Chemistry Society (KNCV)
2013: NWO-Vici grant
2013: Best Masters course of the Utrecht Graduate School of Life Sciences
2013: Elected to the Young Academy of Europe (YAE)
2009: ERC StG/CoG (prior to separation into StG and CoG)
2006: NWO-Vidi grant
2006: Von Freyburg Medal (Catharijne Foundation)
2004: NVBMB prize (Netherlands Society for Biochemistry and Molecular Biology)
2001: KWF (Dutch Cancer Society) preclinical- and fundamental research fellowship
2000: Young talent award, UMC Utrecht
Key Publications
Klaasen SJ, Truong MA, van Jaarsveld RH, Koprivec I, Štimac V, de Vries SG, Risteski P, Kodba S, Vukušić K, de Luca KL, Marques JF, Gerrits EM, Bakker B, Foijer F, Kind J, Tolić IM, Lens SMA, Kops GJPL. Nuclear chromosome locations dictate segregation error frequencies. Nature 607 (2022), 604-609
Hoevenaar W, Janssen A, Quirindongo AI, Ma H, Klaasen S, Teixeira A, Offerhaus GJA, Medema RH, Kops GJPL*, Jelluma N*. Degree and site of chromosomal instability define its oncogenic potential. Nat Commun 11 (2020), 1501. *joint senior authors
Bolhaqueiro ACF, Ponsioen B, Bakker B, Klaasen SJ, Kucukkose E, Van Jaarsveld RH, Vivié J, Verlaan-Klink I, Hami N, Spierings DCJ, Sasaki N, Dutta D, Boi SF, Vries RGJ, Lansdorp PM, Van de Wetering M, Van Oudenaarden A, Clevers H, Kranenburg O, Foijer F, Snippert HGJ, Kops GJPL. Ongoing chromosomal instability and karyotype evolution in human colorectal cancer organoids. Nat Genet. 51 (2019), 824-834.
Sacristan C, Ahmad MAD, Keller J, Fermie J, Groenewold V, Tromer E, Fish A, Melero R, Carazo JM, Klumperman J, Musacchio A, Perrakis A, Kops GJPL. Dynamic kinetochore size regulation promotes microtubule capture and chromosome biorientation in mitosis. Nat Cell Biol 20 (2018), 800-810.
Hiruma Y, Sacristan C, Pachis ST, Adamopoulos A, Kuijt T, Ubbink M, Von Castelmur E, Perrakis A, Kops GJPL. (2015). Competition between MPS1 and microtubules at kinetochores regulates spindle checkpoint signaling. Science, 348 (6240), 1264-1267.
Members
Geert Kops Oncode Investigator | Alessandro Corsini PhD student | Anko de Graaff Microscope facility manager |
Anneloes Keijzer PhD student | Carlos Sacristan Lopez Senior Scientist | Eloïse van Kwawegen Technician |
Emine Ali Postdoc fellow | Joana Fernandes PhD student | Lorena Andrade Ruiz PhD student |
Marco Dias Louro Postdoc | Maximilian Raas PhD Candidate | Natasja Costermans Postdoc fellow |
Nico Lansu Senior Technician | Pim Toonen Analyst | Sarah Tommouhi PhD Student |
Simona Lafirenze PhD Student | Thomas van Ravesteyn Postodoctoral Researcher | Timo Eijkmans Technician |
Victor Tiroille Postdoc fellow |