Table 2.

Common copy number alterations in 5 sporadic CRCs

Number	Chromosome	Cytoband	Start position	Stop position	Size (bp)	Number of observations	Number of probes	Variant type
1	18	q11.2-q23	17,303,810	76,116,083	58,812,273	5	87,610	Loss
2	20	p12.1	11,902,811	17,799,351	5,896,540	5	4085	Loss
3	20	q13.33	57,900,503	62,419,593	4,519,090	5	8692	Gain
4	1	p36.23	7,100,548	9,199,731	2,099,183	4	2191	Gain/Loss
5	4	q22.1	88,201,557	93,996,406	5,794,849	4	4593	Loss
6	13	q12.11-q34	18,402,053	114,118,329	95,716,276	4	127,133	Gain
7	18	p11.21-p11.32	4316	15,069,335	15,065,019	4	11,757	Loss
8	20	p13	12,719	4,998,099	4,985,380	4	2103	Gain/Loss
9	20	q11.23-q13.32	33,900,333	57,898,212	23,997,879	4	34,429	Gain