Table 4.

Assay Cross-Validation by LOOCV Test on 260 FFPE Metastatic Carcinoma and Primary Tissue Samples

Prediction	Tissue of origin
	Breast	Colon	Lung	Ovary	Pancreas	Prostate	Other	Total
Breast	22	0	2	1	1	0	0
Colon	1	27	3	2	4	0	4
Lung	1	2	45	2	3	0	5
Other	1	1	3	1	4	0	16
Ovary	5	0	0	43	0	0	1
Pancreas	0	0	3	0	31	0	6
Prostate	0	0	0	0	0	20	0
Total	30	30	56	49	43	20	32	260
No. correct	22	27	45	43	31	20	16	204
Accuracy	73.3	90.0	80.4	87.8	72.1	100.0	50.0	78.5