TABLE 2.

Pattern of use of biological and genetic tests and prevalence of prognostic markers in chronic lymphocytic leukemia

Biological and genetic tests	Total patients with test reported N (%)	Prognostic markers	Prevalence N (%)
FISH a	441 (85.1%)	del(13q)	222 (50.3%)
		Tri12 b	106 (24.0%)
		del(11q)	42 (9.5%)
		del(17p)	28 (6.4%)
PCR	432 (83.4%)	TP53 c	14 (3.2%)
IGHV mutation testing	312 (60.2%)	IGHV	178 (57.2%)

^a At least one of trisomy 12, deletion 11q, deletion 13q, deletion 17p.

^b Trisomy 12 was reported only in 433 cases.

^c TP53 is detected using FISH or PCR.