Canada’s Largest Allogeneic Stem Cell Transplant Program

A legacy of innovation dating back to 1970, completing over 4,000 transplants since 1975.

Hans Messner Allogenic Transplant Program

The Hans Messner Allogeneic Stem Cell Transplant Program at Princess Margaret Cancer Centre—formerly the Allogeneic Transplant Program—is the largest of its kind in Canada. Our legacy began on June 10, 1970, when Dr. Hans Messner, Dr. Ernest McCulloch, and their team performed the first stem cell transplant at Princess Margaret. This landmark procedure was not only the first in Canada but also one of the first successful transplants outside of the United States. Since the program’s establishment in 1975, we have completed over 4,000 transplants. In 2023, we reached a historic milestone: performing more than 200 allogeneic transplants in a single year—the highest number ever achieved by any cancer centre in the country. This achievement reflects our unwavering commitment to advancing patient care and outcomes. Through the expertise and collaboration of our interdisciplinary team, we have driven a >30% increase in patient survival rates since 2019.
Since 1975

Established

+4000

Transplants

#1

In Canada

+50

Years of excellence

Helpful Resources

Blood and marrow transplants—also known as hematopoietic stem cell transplants—are a treatment option for patients with certain blood or bone marrow disorders. These transplants may be recommended when chemotherapy alone is unlikely to be effective. Stem cells are collected from a donor’s bone marrow or peripheral blood and used to help restore healthy blood cell production in the patient.

An allogeneic blood and marrow transplant involves receiving stem cells from a donor other than yourself. The donor may be a relative or an unrelated volunteer from an international registry. Before the transplant, patients typically undergo high-dose chemotherapy and, in many cases, radiation therapy. The donor’s stem cells are then infused into the patient. Most transplants are performed in an inpatient setting, with hospital stays averaging around four weeks.

Allogeneic transplants are used to treat a variety of conditions, including:

  • Blood and bone marrow cancers such as leukemia, myelodysplastic syndrome, myelofibrosis, and lymphoma.
  • Non-cancerous disorders such as aplastic anemia, bone marrow failure syndromes, and sickle cell disease.

Meet Our Team

Dr. Jonas Mattsson

Medical Director

Dr. Tommy
Alfaro Moya

Dr. Eshrak
Al-Shaibani

Dr. Dennis
(Dong Hwan) Kim

Dr. Rajat Kumar

Dr. Swe Mar Linn

Dr. Fotios
(Frank) Michelis

Dr. Igor
Novitzky-Basso

Dr. Ivan Pasic

Dr. Auro
Viswabandya

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