Table 2.

Distribution of cytogenetic abnormalities

Cytogenetic abnormality	Number of patients (%)a
Primary cytogenetic abnormalities
t(11;14)	90 (18.7)
t(4;14)	50 (10.4)
t(6;14)	5 (1)
t(14;16)	19 (3.9)
t(14;20)	7 (1.5)
t(14;other)	54 (11.2)
Trisomies	254 (52.7)
Monosomy 14	8 (1.7)
Secondary cytogenetic abnormalities
Del 17p	49 (10.2)
Monosomy 13	185 (38.4)
Del 13q	16 (3.3)
Other	22 (4.6)
Insufficient cells or no abnormalities detected	45 (9.3)
Total	482

^aTotal does not equal 482 or 100% due to overlap in cytogenetic abnormalities