Table 1. Relation of Presenting Cellular... | American Society of Hematology

Table 1.

Relation of Presenting Cellular Features With Leukemic Cell Recovery After Culture on Stroma

Feature	Category	Percent Cell Recovery^*		P Value^†
Feature	Category	≤91%	>91%	P Value^†
Lineage	T	7	8	.791
	B	57	57
Differentiation	Early B	41	32	.175
	Pre B	17	23
Adverse genetic features^‡	Yes	8	17	.047
	No	56	46
TEL rearrangements	Yes	12	19	.206
	No	42	37
Hyperdiploidy 51-to-65	Yes	23	2	<.001
	No	41	63

Feature	Category	Percent Cell Recovery^*		P Value^†
Feature	Category	≤91%	>91%	P Value^†
Lineage	T	7	8	.791
	B	57	57
Differentiation	Early B	41	32	.175
	Pre B	17	23
Adverse genetic features^‡	Yes	8	17	.047
	No	56	46
TEL rearrangements	Yes	12	19	.206
	No	42	37
Hyperdiploidy 51-to-65	Yes	23	2	<.001
	No	41	63

The median percentage of leukemic cells recovered after 7 days of culture on stromal layers relative to the number of cells originally seeded was 91% (range, <1% to 550%).

†

By Fisher’s exact test.

‡

Cases with t(9;22), t(1;19) or MLL gene rearrangements.

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