Table A1.

Characteristics of Patients With Slides Available (n = 108) and Not Available (n = 51) for Review

Characteristic	Slides Reviewed (n = 108)		Slides Not Available (n = 51)		P
	No. of Patients	%	No. of Patients	%
Age, years					.65
Median	63		65
Range	36-83		41-87
Male	73	68	39	76
Rai stage					.44
0	53	49	31	60
I	34	31	14	27
II	13	12	5	10
III	2	2	0	0
IV	6	6	1	2
Lymphocyte count, ×109/L					.54
Median	17.8		16.9
Range	2.0-278.4		5.1-167
Zap70 ≥ 20%	63	58	20	40	.04
IgVH unmutated*	41	46	15	47	.84
CD38 ≥ 30%	33	30	13	26	.45
FISH					.66
del 13q14.2	41	38	30	58
Normal	30	28	9	18
Trisomy 12	18	17	5	10
del 11q22.3	7	6	5	10
del 17p13.1	6	6	1	2
Other	3	3	1	2

Abbreviations: FISH, fluorescence in situ hybridization; IgV_H, immunoglobulin heavy chain.

^*IgV_H gene mutation status was attempted for all patients but classifiable for 126 patients.