Engraftment
Platelet engraftment was observed at a median 16 days after allogeneic
HSCT. Platelet engraftment occurred in 38 patients in the ABO-matched
group (range, 14.3–18.1 days), 43 cases in the major incompatibility
group (range, 13.1–19.3 days), 21 patients in the minor incompatibility
group (range, 13.9–19.3 days), and nine patients in the bidirectional
incompatibility group (range, 11.9–16.8 days) (P = 0.698). The
cumulative incidences of 100-day platelet engraftment were 97.37%,
100%, 90.48%, and 100% for the respective groups (P = 0.3451).
Only one case of neutrophil engraftment failure was observed in the
ABO-matched group, while the rest were successfully engrafted.