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Table 3 Low RNA-yield clinical specimens: Nanodrop RNA 260/280 ratio, aRNA concentration and GeneChip QC metrics

From: Translating a gene expression signature for multiple myeloma prognosis into a robust high-throughput assay for clinical use

Case number

Specimen type

Post-sort no. of CD138+ cells

RNA conc. (ng/μL)

aRNA conc. (ng/μL)

Chip QC Metrics (Fail, Warning, Pass)

Pass/Fail Chip QC

RE13-000082

Archival samples with low yield

36,000

11.0

1506.1

0,1,6

Pass

RE13-000079

Archival samples with low yield

32,000

5.3

708.6

0,1,6

Pass

RE13-000080

Archival samples with low yield

1,896,000

6.4

689.7

0,1,6

Pass

RE13-000076

Archival samples with low yield

40,000

3.1

545.1

0,1,6

Pass

RE13-000092

Fresh sample with low yield

22,000

10.4

533

0,0,7

Pass

RE13-000074

Archival samples with low yield

80,000

10.8

455.7

0,1,6

Pass

RE13-000063

Archival samples with low yield

76,000

8.1

426.4

0,0,7

Pass

RE13-000077

Archival samples with low yield

90,000

6.1

410.1

0,1,6

Pass

RE13-000089

Fresh sample with low yield

32,000

9.1

383.3

0,0,7

Pass

RE13-000064

Archival samples with low yield

180,000

5.5

339.9

0,1,6

Pass

RE13-000073

Archival samples with low yield

43,000

10.4

311.1

0,0,7

Pass

RE13-000075

Archival samples with low yield

80,000

2.4

304

0,1,6

Pass

RE13-000066

Archival samples with low yield

18,000

6.9

290.4

0,1,6

Pass

RE13-000085

Fresh sample with low yield

23,000

13.3

286

0,1,6

Pass

RE13-000069

Archival samples with low yield

24,000

8.3

281.1

0,1,6

Pass

RE13-000088

Fresh sample with low yield

20,000

9.6

227.8

0,1,6

Pass

RE13-000081

Archival samples with low yield

692,000

8.2

361.7

3,2,2

Fail

RE13-000084

Fresh sample with low yield

36,000

5.8

341.6

1,0,6

Fail

RE13-000067

Archival samples with low yield

188,000

6.2

271.2

0,3,4

Fail

RE13-000068

Archival samples with low yield

470,000

7.7

263.3

2,1,4

Fail

RE13-000071

Archival samples with low yield

20,000

7.7

254.6

0,3,4

Fail

RE13-000061

Archival samples with low yield

60,000

3.1

220

0,3,4

Fail

RE13-000083

Archival samples with low yield

192,000

5.4

215.5

2,4,1

Fail

RE13-000078

Archival samples with low yield

17,000

3.4

214.6

1,2,4

Fail

RE13-000065

Archival samples with low yield

36,000

5.5

208.4

1,2,4

Fail

RE13-000090

Fresh sample with low yield

18,000

4.8

166.6

0,3,4

Fail

RE13-000091

Fresh sample with low yield

9,000

6.2

144.7

0,3,4

Fail

RE13-000062

Archival samples with low yield

10,000

2.4

122.8

2,3,2

Fail

RE13-000070

Archival samples with low yield

30,000

2.5

100.5

3,2,2

Fail

RE13-000086

Fresh sample with low yield

5,000

0.9

94.5

1,5,1

Fail

  1. Values in bold type correspond to those passing the minimum acceptance threshold. Hybridization success is predicted using post-sort number of cells (>20,000) RNA concenctration (> = 3 ng/μL) and aRNA concentration (> = 280 ng/μL).