Table 1. Correlation between PCR result and subsequent successful array comparative genomic hybridisation (aCGH).

(A) Retrospective correlation of 26 breast tumour formalin-fixed, paraffin-embedded (FFPE) DNA samples aCGH success with performance of their multiplex PCR
DNA quality vs aCGH	Success (%)	Good aCGH	Failed aCGH	N
400 bp	100	11		11
300 bp	100	8		8
200 bp	100	2		2
100 bp	33	1	2	3
No product	0	—	2	2
Totals		22	4	26
(B) Prospective correlation of 93 breast tumour FFPE DNA samples aCGH success with performance of their prior multiplex PCR
Largest product in multiplex PCR	Success (%)	Good aCGH	Failed aCGH	Not done	N
400 bp (100%)	100	2	0		2
300 bp	100	5	0		5
200 bp	97	38	1		39
100 bp	16	6	31		37
No product	ND	0	0	10	10
Totals		51	32	10	93