World Marrow Donor Day

World Marrow Donor Day is celebrated globally to thank all 37 million people registered as potential donors across the world. There is still a need for more donors as 40% of patients do not find a matching donor in the global database. This WMDD we are joining with other donor centres across the world asking everyone who is able to, to register online as part of the WMDD Virtual Global Donor Drive.

Annually, about 20,000 patients worldwide receive blood stem cells from an unrelated matching donor somewhere in the world. Unfortunately, a potential match is not found for every patient – but you can help!

Patient Stories


Azile just turned 6 years of age on 5 September. A time that is meant to be joyous and filled with the wonder of discovery, has been clouded by the angst of fighting a blood cancer that is threatening her young life.


Imagine that you are 10 years old, fighting a rare, life-threatening blood disorder. You need a bone marrow transplant to survive.


My name is Eliza and I am 26 yo. Together with my husband Marcin and our daughter Zosia we live in Pionki.


Three-year-old Praise is a bubbly, chatty child; she loves books and reading stories, observing people and learning about life around her.


Veer is a happy, adventurous 3-year-old from UK. The naughty kid is full of energy and loves running around the house. But right now, he is running out of time.

About WMDD

World Marrow Donor Day (WMDD) is celebrated globally on the third Saturday of September. A unique day to thank all 37 million volunteer donors across the world, who have signed up to potentially donate marrow or blood stem cells for patients in need of a transplant. WMDD also gives the opportunity to patients and donors to explain the impact of blood stem cell transplantation on their lives as well as spreading awareness.

World Marrow Donor Day was initiated in 2015 and has since then grown into a worldwide celebration involving donor centres, registries, transplant centres, patient initiatives, patients and donors and the general public.