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We would like to inform you that the HOVON Data Center (HDC) and the HOVON Safety Desk will remain fully operational to ensure the safety of the patients included in HOVON trials.

The distribution and delivery of the study medicinal products are being closely monitored and we will inform you accordingly if any actions need to be taken.

The central laboratories are also still fully functioning.

At the moment it is possible to include patients in all active HOVON trials.


Participating sites:

Please make sure to inform the HOVON Data Center per e-mail ( if your hospital has decided to temporarily halt patient inclusion in clinical trials following the COVID-19 outbreak.

In case patient visits or study procedures cannot be performed per protocol due to the COVID-19, please document this in the patient files.


Below you find more extensive instructions for the two different groups:

Instruction for the participating sites

Instruction for the national coordinators of the participating countries


For study specific questions, you can contact the concerning HOVON Trial Manager or our general e-mail address ( - Please include HOVON study number as reference). Thank you for your cooperation.


Contact details 

HOVON Central Bureau (HCB):

per email; by phone: (+31) 20 444 2124

HOVON Data Center (HDC):

per email; by phone: (+31) 10 704 1560


With kind regards, Marleen Breems (HOVON General Director) and Bianca Backx (manager HDC)



Welcome to the website of the foundation of Hemato-Oncologie voor Volwassenen Nederland (HOVON – the Haemato Oncology Foundation for Adults in the Netherlands).
The activities of the foundation are focused on improving and promoting treatment methods for adult patients with malignant haematological disorders, such as leukaemia and lymphoma.

For whom

This website is primarily intended for interested parties from the medical world (doctors, nurses, data managers, statisticians, medical insurers, etc.) but of course can also be consulted by patients.

Trials into haematological syndromes

The core of this website consists of information about the various HOVON trials into the different haematological syndromes. This information can be accessed via the tab page Trials. 
Medical practitioners can consult information about current trials via the tab page Working groups, trace general trial information (such as HOVON guidelines, documents and legislation) and consult treatment protocols.
The tab page Field of work, describes for example how new trials can be introduced and how to participate in trials already underway.
Patients can access the majority of this information. Specific information for patients is available under the tab page Patient.

Information protection

Certain information on this site is protected and can only be viewed via an access code, if you are associated to HOVON and have certain authorities. To request logon authority, see the tab page Help.

Pdf documents

A number of the documents that you can download via this site are in PDF format. To be able to read these files, the software programme Adobe Acrobat Reader must be installed on your computer. You can download this programme free at