Table 7. Common benign CNVs found in Hong Kong.

No.	Region size (Kb)	Cytoband Location	Genome coordinates	Event	Genes	Frequency of gain/loss (% )
1	194	1q31.1	chr1∶187592011–187776739	Loss	0	9
2	37	1q44	chr1∶246644054–246914515	Gain/Loss	1	29/13
3	122	6p25.3	chr6∶210793–321392	Gain/Loss	1	7/18
4	171	7p22.3	chr7∶136,363–325,833	Gain	0	14
5	97–125	8p11.23	chr8∶39310297–39531197	Gain/Loss	1–2	51/27
6	68–504	14q11.2	chr14∶21388121–22089869	Gain/Loss	0–2	23/12
7	3–180	16p12.1	chr16∶22534936–22689740	Gain/Loss	0	1/11
8	320	17q21.31	chr17∶41507230–42147712	Gain/Loss	1	2/55
9	83	19p12	chr19∶20408868–20518856	Loss	0	20
10	123	Xp22.33	chrX:3761569–3863478	Gain/Loss	1	9/34
11	105–109	Xq28	chrX:153064828–153168166	Gain/Loss	3	23/9

Kb: Kilobase.