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Table 5 Diagnoses provided by evaluating pathologists and GEP test vs. the reference diagnosis

From: Comparison of histopathology to gene expression profiling for the diagnosis of metastatic cancer

Case No.

Reference Diagnosis

Sex

GEP

EP1

EP2

EP3

EP4

EP5

EP Overall, for 50 case reviews

Result

Highest SS

H&E

Int

Final

All

H&E

Int

Final

All

H&E

Int

Final

All

H&E

Int

Final

All

H&E

Int

Final

All

H&E

Int

All

Case 1

OV

F

OV

97.6

BR

OV

OV

OV

OV

OV

 

OV

OV

OV

 

OV

OV

OV

 

OV

OV

OV

OV

OV

--

--

--

Case 2

CO

M

CO

89.9

CO

CO

 

CO

CO

CO

 

CO

CO

CO

 

CO

PA

PA

 

PA

CO

LU

LU

LU

--

--

--

Case 3

CO

M

CO

87.6

CO

CO

 

CO

CO

CO

 

CO

CO

CO

 

CO

LU

CO

 

CO

CO

CO

CO

CO

--

--

--

Case 4

BR

F

BR

97.6

LU

OV

OV

OV

LU

LU

 

LU

BR

BR

PA

PA

OV

OV

PA

PA

OV

OV

OV

OV

--

--

--

Case 5

KI

M

KI

86.4

KI

KI

 

KI

KI

KI

 

KI

KI

KI

 

KI

LU

KI

 

KI

KI

KI

KI

KI

--

--

--

Case 6

ME

F

ME

67.4

LY

ME

ME

ME

BR

BR

 

BR

LI

ME

ME

ME

BR

ME

ME

ME

LU

ME

ME

ME

--

--

--

Case 7

BL

M

BL

45.1

GC

PA

BL

 

LU

GA

 

GA

LU

LU

BL

BL

LU

BL

 

BL

BR

BL

PA

PA

--

--

--

Case 8

SC

M

SC

76.1

SC

SC

 

SC

LI

SC

 

SC

SC

SC

SC

SC

LI

ME

 

ME

KI

LI

LI

LI

--

--

--

Case 9

GA

M

GA

36.9

GA

GA

 

GA

SC

GA

GA

GA

GA

GA

GA

GA

PA

PA

 

PA

LY

GA

GA

GA

--

--

--

Case 10

LU

M

OV

24.4

BL

BL

 

BL

BL

BL

 

BL

BL

BL

BL

BL

BL

BL

 

BL

BL

BL

BL

BL

--

--

--

No. incorrect

  

1

 

5

3

 

2

6

4

 

4

3

2

 

2

9

5

 

5

6

4

5

5

29

19

18

No. correct

  

9

 

5

7

 

8

4

6

 

6

7

8

 

8

1

5

 

5

4

6

5

5

21

31

32

% correct

  

90%

 

50%

70%

 

80%

40%

60%

 

60%

70%

80%

 

80%

10%

50%

 

50%

40%

60%

50%

50%

42%

62%

64%

  1. The tumor tissue is indicated by a two-letter code: bladder (BL), breast (BR), colorectal (CO), gastric (GA), testicular germ cell (GC), kidney (KI), hepatocellular (LI), non-small cell lung (LU), non-Hodgkin’s lymphoma (LY), melanoma (ME), ovarian (OV), pancreas (PA), prostate (PR), thyroid (TH) and sarcoma (SC). SS – Similarity Score, a measure of the similarity of the RNA expression pattern of the specimen to the RNA expression pattern of the indicated tissue. Similarity Scores range from 0 (very low similarity) to 100 (very high similarity) and sum to 100 across all 15 tissues on the GEP Test panel. The incorrect predictions are indicated with yellow highlight. Grey indicates no stains ordered.