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Table 1 Description of included studies investigating the association between TAI status and IVF/ICSI outcomes

From: Thyroid autoimmunity and IVF/ICSI outcomes in euthyroid women: a systematic review and meta-analysis

Study

Year

Study Population

Study Design

Thyroid autoantibodies tested and cut-off values

Assay used for thyroid antibodies

TAI+ patients

TAI+ TSH Levels

TAI- patients

TAI- TSH Values

ART procedure

Outcomes

Quality of evidence a

Muller [12]

1999

Women undergoing IVF March 1994–March 1996

Prospective

TPO-Ab: normal range < = 80 IU/ml

RIA

25

3.5+/−3.6

148

1.7+/−1.7

IVF

MR

7

Poppe [13]

2003

Women undergoing ART October 1999–November 2000

Prospective

TPO-Ab: normal range < 100 KU/L

RIA

32

1.6 (0.02–4.1)

202

1.3 (0.05–3.6)

IVF/ICSI

CPR, CMR, BPL, MR, LBR/CP, ET

8

Negro [30]

2007

Women undergoing ART Jan 2000- Jan 2006

Retrospective Cohort

TPO-Ab: normal range < 100 KU/I

RIA

374

-

42

-

IVF/ICSI

MR, ET, NOR

7

Kilic [31]

2008

Women with unexplained fertility undergoing first ART procedure Jan 2006-Feb 2007

Prospective Cohort

TPOAb: normal< 34 IU/ml,

Tg Ab: normal < 150 IU/ml

Electrochemiluminescence

23

2.21+/−1.25

31

1.99+/− 1.11

IVF

CPR, BPL, NOR

7

Revelli [32]

2009

Women undergoing ART Feb 2004 – May 2008

Retrospective Cohort

TPO-Ab: normal range < 35 U/ml

TG-Ab: normal range < 40 IU/ml

Immunofluorescence

38

(52 cycles)

2+/− 1.2

200

2.2+/− 1.1

IVF

CPR, CMR, MR, NOR

8

Zhong [33]

2012

Women undergoing ART Aug 2009 - Aug 2010

Retrospective Cohort

TPO-Ab: normal range < 5.61 IU/ml

TG-Ab: normal range < 4.11 IU/ml

CMIA

90

(156 cycles)

676

(981 cycles)

IVF/ICSI

MR, IR, ET, NOR

8

Karacan [34]

2013

Infertile women undergoing ICSI May 2009–July 2012

Prospective cohort

TPO-ab: normal < 35 IU/ml Tg-Ab: normal< 115 IU/ml

ECLIA

34

1.89+/− 1.18

219

1.74+/− 1.24

ICSI

CPR, CMR, BPL, MR, IR, ET, NOR

8

Chai [14]

2014

Infertile women undergoing first IVF/ICSI cycle between Feb 2007 and Dec 2009*

Retrospective cohort

TPO-ab: normal < 9 IU/ml Tg-Ab: normal< 4 IU/ml

TPO antibody reagent pack

89

1.5 (0.35–2.47)

419

1.4 (0.32–2.50)

 

CPR, CMR, MR, LBR/CP

7

Tan [35]

2014

Women undergoing ICSI 1997–2006

Retrospective

TPO-ab: normal < 35 U/L

Tg-Ab: normal < 40 U/L

Chemiluminescence

110

1.7+/−  0.7

725

1.5+/−  0.6

ICSI

CPR, CMR, MR, LBR/CP

8

Lukaszuk [15]

2015

Women undergoing ART April 2010–April 2012

Retrospective

TPO-ab: normal < 34 IU/mL

ECLIA

114

All euthyroid

495

All euthyroid

ICSI

CPR, CMR, MR, LBR/CP, IR

7

Sakar [23]

2016

Women undergoing ICSI July 2013–March 2014

Prospective case-control

TPO-ab: normal < 35 U/L

Tg-Ab: normal < 78 U/L

ELISA

31

(32 cycles)

2.35+/− 1.84

121

(126 cycles)

1.97+/− 2.07

ICSI

CPR, CMR, BPL, MR, NOR

8

Chen [21]

2017

Infertile women Jan 2015-Dec 2015**

prospective cohort

TPO-Ab: normal range < 34kIU/L

ECLIA

214

-

844

-

IVF/ ICSI

CPR, CMR, IR, ET, NOR

8

Zhuang [24]

2017

Women undergoing ICSI Mar 2011-Oct 2013***

Retrospective cohort

TPO-Ab, TG-Ab

Cut-off values not reported

Not Reported

127

All euthyroid

662

All euthyroid

IVF

CPR, NOR

7

Devi [22]

2019

Women undergoing IVF Nov 2014- Apr 2016

Prospective cohort

TPO-ab: normal < 50 IU/ml

Tg-Ab: normal < 100 IU/ml

ELISA

17

All euthyroid

64

All euthyroid

IVF

CPR, NOR

8

  1. aAssessed using the Newcastle Ottawa Scale
  2. *Only euthyroid women included
  3. **Only women with TPO-ab were included to prevent sample overlap
  4. ***Only women with TSH ≤ 2.5mIU/L included
  5. CPR, clinical pregnancy rate; CMR, clinical miscarriage rate; BPL, biochemical pregnancy loss; MR; miscarriage rate according to all definitions; LBR/CP, live birth rate per clinical pregnancy; LBR/ cycle, live birth rate per cycle; IR, implantation rate; ET, numbers of embryos transferred; NOR, number of oocytes retrieved