Proliferation index (percentage of S+G2M cells) of different BM cell compartments in normal/reactive BM (n = 94) and MDS patients (n = 106) with normal/favourable (n = 83) versus intermediate/poor (n = 23) cytogenetics.

Results expressed as median percentage of cells and range between brackets.*, p**, pvs. normal/reactive BM; and;‡‡, pvs. normal/favourable karyotype. Normal/favourable cytogenetics includes cases with a normal karyotype, -Y, del(5q) or isolated del(7q); poor cytogenetics includes cases with complex (≥3 chromosomal abnormalities) karyotypes and alterations of chromosome 7, except isolated del(7q), and; intermediate cytogenetics: other karyotypic abnormalities.