Table 3

Tumours lacking concordance between fluorescence in situ hybridisation (FISH) and comparative genomic hybridisation (CGH)

	FISH 17p % cells with				FISH 17q % cells with				FISH 17p status		FISH 17q status		CGH
Tumour	Loss	Balance	Gain	FISH 17p average signal	Loss	Balance	Gain	FISH 17q average signal	>Threshold	Average signal	>Threshold	Average signal	17p loss	17q gain	17 gain
Equivocal indicates that no value is greater or equal to the threshold of 41%, or that more than one value crosses this threshold.
*i(17q) by FISH.
§i(17q) by CGH.
8	46	46	8	0.85	18	41	41	1.30	Equivocal	Balance	Equivocal	Gain	Yes	Yes	No§
17	78	20	2	0.64	12	35	53	1.38	Loss	Loss	Gain	Gain*	No	Yes	No
19	72	24	4	0.67	7	61	32	1.17	Loss	Loss	Balance	Balance	Yes	Yes	No§
2	70	25	5	0.75	30	38	32	1.08	Loss	Loss	Equivocal	Balance	No	No	No
9	19	69	12	1.02	22	64	14	1.02	Balance	Balance	Balance	Balance	No	Yes	Yes
18	27	44	29	1.05	16	42	42	1.19	Balance	Balance	Equivocal	Balance	No	Yes	Yes

Imbalances of chromosome 17 in medulloblastomas determined by comparative genomic hybridisation and fluorescence in situ hybridisation

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