Table 2 Published reports: summary of intrachromosomal copy number changes detected by array CGH.

Paper	No of patients*	Intrachromosomal			No of targets on array
		De novo	Familial	Unknown
Vissers L et al10	20 (0)	2	2	1	3569
Shaw‐Smith et al11	50 (41)	7	5	0	∼3500
Rosenberg et al13	81(0)	4	7	3	∼3500
Schoumans et al14	41(41)	4	0	0	2600
This study	140 (31)	11	7	3	∼3500
Total	332	28	21	7
De Vries et al12	100	10	0	5	32447

*Number on which subtelomeric imbalances have been excluded before array CGH was carried out.

CGH, comparative genomic hybridisation.