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Table 2 Differential analysis on predicted expression datasets. Top unique differentially expressed genes upregulated in lesional skin compared with those in non-lesional skin when ranked according to log2-fold-change in (a) original dataset, (b) predicted dataset with 60 % observability and (c) sparse known-value (checkpoint) dataset without prediction at 60 % observability

From: Gene expression prediction using low-rank matrix completion

  

Original dataset

   

Recovered dataset (60 %)

   

Checkpoint dataset (60 %)

  

Gene

Probe ID

Symbol FC

log

Adj.

Probe ID

Symbol

log FC

Adj.

Probe ID

Symbol

log FC

Adj.

ranking

   

P-Value ×10−10

   

P-Value ×10−10

   

P-Value

1

205863_at

S100A12

9.79929

< 1

205863_at

S100A12

8.99648

< 1

211906_s_at

SERPINB4

6.21118

3.3×10−10

2

211906_s_at

SERPINB4

9.60376

< 1

211906_s_at

SERPINB4

8.67119

< 1

205863_at

S100A12

5.48282

3.3×10−9

3

205513_at

TCN1

8.65788

< 1

205513_at

TCN1

8.12271

< 1

205513_at

TCN1

5.07988

4.8×10−9

4

232220_at

S100A7A

8.21988

< 1

232220_at

S100A7A

7.92112

< 1

204385_at

KYNU

5.06729

3.3×10−10

5

205660_at

OASL

7.94647

< 1

205660_at

OASL

7.4045

< 1

1569555_at

GDA

4.75835

4.8×10−9

6

220664_at

SPRR2C

7.87929

< 1

220664_at

SPRR2C

7.3366

< 1

205844_at

VNN1

4.70129

3.3×10−10

7

207602_at

TMPRSS11D

7.64471

< 1

1569555_at

GDA

7.11896

< 1

209719_at

SERPINB3

4.67529

1.6×10−4

8

1569555_at

GDA

7.39506

< 1

207602_at

TMPRSS11D

7.10503

< 1

234699_at

RNASE7

4.57012

2.9×10−7

  1. Significance is demonstrated by adjusted P-values for fold change in every gene by using eBayes with Benjamini–Hochberg correction
  2. Abbreviations: logFC log2-fold-change, Ave Expr average log2-expression of the probe over all arrays, Adj. P-Value P-value adjusted from the raw P-value