Treatment Procedures
Donor Matching: The first step in a bone marrow transplant is finding a suitable donor
whose tissue type closely matches that of the recipient. This is typically done through blood tests
to determine human leukocyte antigen (HLA) compatibility.
Stem Cell Harvesting: Once a donor is identified, hematopoietic stem cells are
collected from either the donor's bone marrow (in a surgical procedure called bone marrow harvest)
or from their peripheral blood (through a process called apheresis).
Conditioning Therapy: Before the transplant, the recipient undergoes conditioning
therapy, which involves high-dose chemotherapy, radiation therapy, or a combination of both. This
helps suppress the immune system and make room in the bone marrow for the transplanted stem cells.
Transplantation: The harvested stem cells are then infused into the recipient's
bloodstream through a central venous catheter. Over time, these cells migrate to the bone marrow and
begin to multiply, eventually restoring normal blood cell production.
Engraftment and Recovery: In the weeks following the transplant, the transplanted stem
cells begin to engraft in the bone marrow and start producing healthy blood cells. The patient is
closely monitored for signs of engraftment, infection, and graft-versus-host disease (GVHD), a
potential complication where the donor's immune cells attack the recipient's tissues.