Lack of correlation between the number of donor nucleated bone marrow cells or CFU-GM content and the rapidity of engraftment in allogeneic BMT.

The data of 146 consecutive allogeneic bone marrow transplant patients over a two year period from one center were analysed to study the possible correlation between the rapidity of engraftment and the number of the transplanted nucleated bone marrow cells (TNBMC) or CFU-GM. Thirty-four patients were excluded because of early death, previous splenectomy, colony stimulating factor therapy or non-engraftment. Of the remaining 112 patients 85 had both TNBMC and CFU-GM data alone. No correlation was found between the rapidity of engraftment and the number of TNBMC or CFU-GM.