Longitudinal analysis of lineage-specific chimerism after HCT. Data were collected for 92 WAS-transplanted patients with at least 24 months of follow-up after HCT. Chimerism in the T- and B-lymphocyte and in the myeloid compartment was categorized according to the percentage of donor cells in 4 different groups ranging from full (defined by the presence of > 95% donor cells), high (> 50%-95%), low (5%-50%), to null (< 5%) chimerism. These data are reported for each cell type in panel A to show the longitudinal profile of donor chimerism variations, defined as changes in chimerism group, or in panel B to display the distribution of lineage-specific chimerism groups at various time points after HCT.