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Table 2 IgG-reactivitya and adjusted MFIb to four antigens detected in the targeted screening of the complete cohort using antigen bead arrays

From: The antimicrobial protein S100A12 identified as a potential autoantigen in a subgroup of atopic dermatitis patients

Gene

KRTAP17-1

HSPA4

S100A12

S100Z

Gene description

Keratin associated protein 17-1

Heat shock 70 kDa protein 4

S100 calcium binding protein A12

S100 calcium binding protein Z

Ensembl ENSG IDc

ENSG00000186860

ENSG00000170606

ENSG00000163221

ENSG00000171643

Uniprot

Q9BYP8

P34932

P80511

Q8WXG8

Protein fragment ID

HPRR3460778

HPRR4220528

HPRR400165

HPRR3460547

Number of IgG-reactive individuals

n (%)

n (%)

n (%)

n (%)

AD patients (N = 173)

55 (32)

36 (21)

13 (8)

8 (5)

 Severed (N = 50)

20 (40)

15 (30)

5 (10)

7 (14)

 Moderated (N = 123)

35 (28)

21 (17)

8 (6)

1 (1)

Healthy controls (N = 84)

13 (15)

9 (11)

0 (0)

3 (4)

P valuese

Calculated on proportion positive individuals

AD versus HC

0.006

0.054

0.006

1.00

sAD versus mAD

0.15

0.07

0.53

0.0008

sAD versus HC

0.002

0.009

0.006

0.04

mAD versus HC

0.03

0.23

0.02

0.31

Adjusted MFI of individuals

Median (Q1–Q3)

Median (Q1-Q3)

Median (Q1-Q3)

Median (Q1-Q3)

AD patients (N = 173)

7.2 (4.3–18.2)

3.2 (1.3–9.8)

2.6 (0.8–6.5)

− 1.7 (− 2.1 to − 0.6)

 Severed (N = 50)

7.4 (4.6–23.3)

4.0 (1.2–21.3)

2.6 (1.0–6.5)

− 1.8 (− 2.2 to 0.5)

 Moderated (N = 123)

7.1 (4.3–15.9)

3.2 (1.3–8.7)

2.3 (0.8–6.3)

− 1.7 (− 2.1 to − 1.0)

Healthy Controls (N = 84)

5.8 (3.4–10.5)

2.8 (1.1–7.2)

0.8 (0.2–2.0)

− 1.6 (− 2.0 to − 0.2)

P valuesf

Calculated on adjusted MFI values

AD versus HC

0.01

0.36

0.000003

0.16

sAD versus mAD

0.26

0.63

0.50

0.35

sAD versus HC

0.01

0.32

0.00008

0.78

mAD versus HC

0.054

0.48

0.00003

0.09

  1. AD atopic dermatitis, sAD severe AD, mAD moderate AD, HC healthy controls, N number of individuals, n = number of positive individuals
  2. aIgG-reactivity was defined using sample-specific cut-offs based on the sample median across protein fragments and the median absolute deviation (MAD), see “Methods” section
  3. bSample median across protein fragments was subtracted from each signal and divided by the MAD, see “Methods” section
  4. cEnsembl version 88.38
  5. dObjective SCORAD [29], severe AD defined as SCORAD ≥ 41
  6. eFisher’s exact test
  7. fWilcoxon rank-sum test