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Table 3 Best evidence synthesis of genetic markers

From: Clinical, laboratory, and genetic markers for the development or presence of psoriatic arthritis in psoriasis patients: a systematic review

Category

Marker

Good/fair quality studies

Poor quality studies

Evidence

HLA

Haplotype B*08:01-C*07

 

1x positive association [97]

Limited evidence of positive association

Haplotype B*08-C*07-MICA*00801

1x positive association [98]

 

Moderate evidence of positive association

Haplotype B*18-C*07

 

1x positive association [99]

Limited evidence of positive association

Haplotype B*27-C*01

 

2x positive association [97, 99]

Moderate evidence of positive association

Haplotype B*27-C*02

 

3x positive association [97, 99, 100]

Moderate evidence of positive association

Haplotype B*27-C*02-MICA*00701/026

1x positive association [98]

 

Moderate evidence of positive association

Haplotype B*35-C*04-MICA*0201/020

1x negative association [98]

 

Moderate evidence of negative association

Haplotype B*37-C*06

 

1x negative association [97]

Limited evidence of negative association

Haplotype B*38-C*12

 

3x positive association [97, 99, 100]

Moderate evidence of positive association

Haplotype B*39:01-C*12

 

2x positive association [97, 100]

Moderate evidence of positive association

Haplotype B*57-C*06

 

2x negative association [97, 99]

Moderate evidence of negative association

Haplotype B*57-C*06-MICA*017

 

1x negative association [99]

Limited evidence of negative association

HLA-A*03

 

1x mixed results [101]

Conflicting evidence

HLA-B*08

 

2x positive association [97, 99]

3x no association [100, 102, 103]

Conflicting evidence

HLA-B*13

 

1x mixed results [101]

2x no association [102, 104]

Conflicting evidence

HLA-B*18

 

1x positive association [97]

1x no association [100]

Conflicting evidence

HLA-B*27

 

6x positive association [97, 99, 100, 103,104,105]

1x no association [102]

Moderate evidence of positive association

HLA-B*37

 

1x negative association [97]

1x no association [102]

Conflicting evidence

HLA-B*38

 

3x positive association [97, 99, 100]

1x no association [104]

1x mixed results [101]

Conflicting evidence

HLA-B*39

 

1x positive association [100]

1x mixed results [97]

Conflicting evidence

HLA-B*40

 

1x negative association [97]

Limited evidence of negative association

HLA-B*44

 

1x negative association [97]

Limited evidence of negative association

HLA-B*57

 

1x negative association [99]

3x no association [100, 102, 104]

Moderate evidence of no association

HLA-B*70

 

1x mixed results [101]

Conflicting evidence

HLA-B amino acid position 45 Glu

 

1x positive association [106]

2x no association [102, 103]

Conflicting evidence

HLA-B amino acid position 95 Leu

 

1x positive association [102]

Limited evidence of positive association

HLA-B amino acid position 97 Arg

 

1x mixed results [103]

1x no association [102]

Conflicting evidence

HLA-C*01

 

1x positive association [99]

3x no association [97, 100, 102]

Moderate evidence of no association

HLA-C*02

 

2x positive association [97, 99]

2x no association [100, 102]

Conflicting evidence

HLA-C*06

1x negative association [107]

7x negative association [97, 99, 102,103,104,105, 108]

2x no association [100, 109]

1x mixed results [101]

Moderate evidence of negative association

HLA-C*07

 

1x positive association [99]

2x no association [100, 102]

Conflicting evidence

HLA-C*08

 

1x negative association [105]

Limited evidence of negative association

HLA-C*12

 

1x positive association [100]

2x no association [99]

Conflicting evidence

HLA-C amino acid position 305 Ala

 

1x positive association [102]

Limited evidence of positive association

HLA-C rs10484554

 

1x positive association [110]

Limited evidence of positive association

HLA-C rs12191877

 

1x negative association [111]

Limited evidence of negative association

HLA-DQB1*02

 

1x mixed results [101]

1x no association [102]

Conflicting evidence

HLA-DRB1*03

 

2x no association [101, 102]

Moderate evidence of no association

HLA-DR*04

 

1x positive association [101]

Limited evidence of positive association

HLA-DR*07

 

1x negative association [105]

Limited evidence of negative association

HLA-DR*11

 

1x mixed results [101]

Conflicting evidence

Non-HLA

ADAMTS9-MAG1 deletion

 

1x positive association [112]

Limited evidence of positive association

CCR2 rs1799864

1x positive association [113]

 

Limited evidence of positive association

IL1RN rs397211

 

2x no association [111, 114]

Moderate evidence of no association

IL12B rs2082412

 

2x negative association [111, 114]

Moderate evidence of negative association

IL12B rs3212227

1x no association [115]

1x no association [109]

Moderate evidence of no association

IL12B rs6887695

1x no association [115]

1x no association [109]

Moderate evidence of no association

IL13 rs1800925

1x positive association [116]

1x positive association [117]

Moderate evidence of positive association

IL13 rs20541

 

2x positive association [114, 117]

1x not associated [111]

Conflicting evidence

IL13 rs848

1x positive association [116]

 

Moderate evidence of positive association

IL17E rs79877597

 

1x positive association [118]

Limited evidence of positive association

IL23A rs2066807

 

2x not associated [111, 114]

Moderate evidence of no association

IL23R rs11209026

1x no association [115]

1x no association [109]

Moderate evidence of no association

IL23R rs2201841

 

1x negative association [111]

1x not associated [114]

Conflicting evidence

KIR2DS1 pos/C2 neg

 

1x positive association [119]

Limited evidence of positive association

LOC100505817 rs4891505

 

1x positive association [120]

Limited evidence of positive association

MICA*00701/026

1x positive association [98]

 

Moderate evidence of positive association

MICA*00801

1x positive association [98]

 

Moderate evidence of positive association

MICA*016

1x negative association [98]

 

Moderate evidence of negative association

NFKBIA rs7152376

1x positive association [107]

 

Moderate evidence of positive association

PTPN22 rs2476601

 

1x positive association [121]

Limited evidence of positive association

TNFa-238

 

2x not associated [109, 122]

Moderate evidence of no association

TNFa-308

 

2x not associated [109, 122]

Moderate evidence of no association

TNFa-857

 

1x positive association [109]

Limited evidence of positive association

TNFacd haplotype a6c1d3

 

1x positive association [123]

Limited evidence of positive association

TNFAIP3 rs610604

 

2x not associated [111, 114]

Moderate evidence of no association

TNIP rs17728338

 

2x not associated [111, 114]

Moderate evidence of no association

TRAF3IP2 rs240993

 

1x not associated [114]

Limited evidence of no association

TRAF3IP2 rs458017

 

1x not associated [110]

Limited evidence of no association

TSC1 rs1076160

 

2x not associated [111, 114]

Moderate evidence of no association

ZNF816A

 

1x negative association [114]

Limited evidence of negative association

  1. A positive association is defined as a higher risk of PsA when the marker is present/increased/higher. A negative association is defined as a lower risk of PsA when the marker is present/increased/higher.
  2. ADAMTS a disintegrin and metalloproteinase with thrombospondin motifs, Arg arginine, CCR C-C motif receptor, Glu glutamic acid, HLA human leukocyte antigen, IL interleukin, IL1RN IL-1 receptor antagonist, IL23R IL-23 receptor, KIR killer-cell immunoglobulin-like receptor, MAGI membrane-associated guanylate kinase, MICA MHC class I polypeptide-related sequence A, PTPN22 protein tyrosine phosphatase non-receptor type 22, TNF tumor necrosis factor, TNFAIP TNF alpha-induced protein, TNIP TNFAIP3-interacting protein, TRAF TNF receptor-associated factor, TRAF3IP TRAF3-interacting protein, TSC1 tuberous sclerosis 1, ZNF zinc finger protein