Study | Country Study period |
Population source | Exposure definition | Non-exposure definition | Sample size | Rmk |
---|---|---|---|---|---|---|
Broms (Controls exposed to other treatments), 2020 |
Denmark, Finland and Sweden 2006 - 2013 |
All women who gave birth to a singleton infant during the study period. | Women who filled prescriptions for Infliximab within 90 days before their LMP until delivery. (This is a subgroup of exposure among the whole exposed group considered in the study). |
exposed to other treatment, sick
Women who filled prescriptions for Nonbiologic systemic treatment (mainly azathioprine, corticosteroids, sulfasalazine, anti-malarials, and methotrexate) within 90 days before their LMP until delivery. |
208 / 9393 | |
Broms (Controls unexposed, disease free), 2020 |
Denmark, Finland and Sweden 2006 - 2013 |
All women who gave birth to a singleton infant during the study period. | Women who filled prescriptions for Infliximab within 90 days before their LMP until delivery. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, disease free
The general population (women without the diseases of interest and without treatment). |
208 / 1623483 | |
Bröms (controls unexposed, disease free), 2016 |
Denmark and Sweden 2004/6 - 2012 |
Women and their infants up to 1 year of age (among all 15 million residents of Denmark and Sweden). | Women who had filled prescriptions for Infliximab within 90 days before and 90 days after their last menstrual period. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, disease free
Women without disease or TNF treatment (ie, the general population). |
156 / 1250192 | Primary analyse on Anti-TNF, with individual result by substance (n=2 Certolizumab). Controls: Corticosteroids (7.7%); anti-inflammatory treatments (20.8%: AZA, mercaptopurine, cyclosporine, acitretin, mycophenolate...); MTX (0.2%). |
Bröms (controls unexposed, sick), 2016 |
Denmark and Sweden 2004/6 - 2012 |
Women and their infants up to 1 year of age (among all 15 million residents of Denmark and Sweden) | Women who had filled prescriptions for Infliximab within 90 days before and 90 days after their last menstrual period. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, sick
Women with chronic inflammatory disease but no anti-TNF treatment. |
156 / 21549 | Primary analyse on Anti-TNF, with individual result by substance (n=2 Certolizumab). Controls: Corticosteroids (7.7%); anti-inflammatory treatments (20.8%: AZA, mercaptopurine, cyclosporine, acitretin, mycophenolate...); MTX (0.2%). |
Casanova, 2013 |
Spain Not specified |
All women who had become pregnant after the diagnosis of Crohn’s disease (CD) or ulcerative colitis (UC) followed in the IBD Units from 24 Spanish hospitals. | Pregnancies in IBD patients on Infliximab during pregnancy or during the 3 months before conception. (This is a subgroup of exposure among the whole exposed group considered in the study). |
exposed to other treatment, sick
Pregnancies in IBD patients which did not receive these drugs either during pregnancy or the 3 months before conception. |
20 / 318 | Primary aim: evaluate the safety of thiopurines and anti-TNF-α during conception and pregnancy in IBD patients. Exposed population divided in 2 groups: A) thiopurines alone; B) anti-TNF-α drugs (IFX, ADA, and CZB) with or without concomitant thiopurines. |
De Lorenzo (Controls unexposed, disease free), 2020 |
Italy 2009 - 2017 |
Mothers who attended the Clinic. | Children born to mothers with autoimmune diseases on Infliximab therapy during pregnancy. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, disease free
Children born to healthy mothers. |
3 / 36 | |
De Lorenzo (Controls unexposed, sick), 2020 |
Italy 2009 - 2017 |
Mothers who attended the Clinic. | Children born to mothers with autoimmune diseases on Infliximab therapy during pregnancy. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, sick
Children born to mothers with autoimmune diseases not treated with Biologic disease-modifying anti-rheumatic drugs (bDMARDs). |
3 / 32 | Unexposed: 13 of 32 neonates were born to mothers under no immunosuppressive, 15 to HCQ, 1 to AZA and 3 to both AZA and HCQ. |
Hyrich, 2006 |
United Kingdom Until 2005 |
Patients with rheumatic diseases directly exposed to anti-TNFa therapies during or immediately prior to pregnancy. | Patients who were directly exposed to infliximab at the time of conception. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, sick
Patients who electively discontinued their anti-TNFa therapy prior to conceiving (range 1–10 months before conception). |
3 / 9 | All but 2 etanercept patients discontinued their during the first trimester of pregnancy. |
Langen, 2014 |
USA 2001 - 2009 |
All pregnancies complicated by Rheumatoid arthritis (RA) delivered at the institution. | Women with infliximab near the time of conception. (This is a subgroup of exposure among the whole exposed group considered in the study). |
exposed to other treatment, sick
Women with prednisone only near the time of conception. (This is a subgroup of exposure among the whole exposed group considered in the study). |
1 / 15 | Co-exposure Prednisolone and infliximab (discontinuation of infliximab). |
Lichtenstein, 2018 |
North America 1999 - 2012 |
Crohn’s disease (CD) patients. | Pregnancy in CD patients treated with infliximab (at least one infliximab infusion), ≤ 365 days before the pregnancy outcome date. |
exposed to other treatment, sick
Pregnancy in CD patients treated with non-biologic CD treatments only (such as azathioprine, methotrexate, 6-mercaptopurine, prednisone, and antibiotics or narcotic analgesics). |
106 / 106 | 2 analyses: IFX gestational exposure (≤365 days before the pregnancy outcome date) and IFX pre-gestational exposure (>365 days before the pregnancy outcome date => NOT REPORTED here). |
Schnitzler (Unexposed control, disease free), 2011 |
Belgium 1994 - 2007 |
Pregnant women who delivered at the University Hospital in Leuven. | Pregnant IBD patients treated with IFX within 3 months prior to conception and/or during pregnancy. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, disease free
Matched pregnancies of healthy women out of the Flemish population who delivered at the University Hospital in Leuven. |
35 / 56 | Main analysis: pregnancies with IFX (n=35) or ADA (n =7), but for malformations, raw data provided for each substance and used for this meta-analysis. |
Schnitzler (Unexposed control, sick), 2011 |
Belgium 1994 - 2007 |
Pregnant women who delivered at the University Hospital in Leuven | Pregnant IBD patients treated with IFX within 3 months prior to conception and/or during pregnancy. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, sick
Pregnancies after diagnosis of IBD but prior to IFX treatment. |
35 / 78 | Main analysis: pregnancies with IFX (n=35) or ADA (n =7), but for malformations, raw data provided for each substance and used for this meta-analysis. |
Seirafi, 2014 |
France and Belgium 2009 - 2010 |
Pregnant IBD patients. | Pregnant IBD patients under Infliximab within 3 months prior to conception and/or during pregnancy. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, sick
Pregnant IBD patients not treated with anti-TNF therapy. |
86 / 99 | Design seems to be a retrospective cohort rather than a case–control study as mentioned by authors. Exposures: IFX (n=86), ADA (n=42) or CTZ (n=5). Anti-TNFs were preventively discontinued before GW 30 in 73% of patients having completed their pregnancy. |
Vinet (Unexposed controls, disease free), 2018 |
USA 2011 - 2015 |
The Pregnancies in RA Mothers and matched control group of children born to unaffected mothers. | Children born of rheumatoid arthritis (RA) women with ≥1 filled prescription of Infliximab during the preconception and/or gestational periods. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, disease free
Children born to non-RA mothers without TNFi exposure (i.e., no prescription filled or infusion procedure claim within the preconception and gestational periods). |
37 / 14596 | Primary analysis performed on the group of TNFi, but raw data related to serious infections provided by type of TNFi and used in this meta-analysis. |
Vinet (Unexposed controls, sick), 2018 |
USA 2011 - 2015 |
The Pregnancies in RA Mothers and matched control group of children born to unaffected mothers. | Children born of rheumatoid arthritis (RA) women with ≥1 filled prescription of Infliximab during the preconception and/or gestational periods. (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, sick
Children born of rheumatoid arthritis (RA) women without TNFi exposure (i.e., no prescription filled or infusion procedure claim within the gestational period and the 12 weeks preceding it). |
37 / 2476 | Primary analysis performed on the group of TNFi, but raw data related to serious infections provided by type of TNFi and used in this meta-analysis. |
Weber-Schoendorfer, 2015 |
Australia, Finland, France, Italy, The Netherlands, Turkey, Switzerland and the United Kingdom 1998 - 2013 |
Pregnant women who contact a Teratology information services (TIS), directly or via her health care professional. | Pregnant women who had been exposed to more than one dose of IFX at any time during the first 12 weeks after the last menstrual period (LMP). (This is a subgroup of exposure among the whole exposed group considered in the study). |
unexposed, disease free
Pregnant women identified through spontaneous TIS consultations for other conditions or exposures such as hairdyeing, urinary tract infection, asthma or depression. |
168 / 1532 | Analyses were performed for the group of 5 TNF-α inhibitors (172 ADA, 7 CZP, 140 ETA, 3 GOL and 168 IFX). Raw data were provided for major malformations and used for the meta-analysis. |
Study | Country Study period |
Case | Control | Sample size | Rmk |
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43 studies, not fulfilled eligibility criteria, were excluded. See excluded tab for the list of these studies and reason of exclusion.