Fertility and pregnancy outcomes in women with spondyloarthritis: a systematic review and meta-analysis.

Hamroun, Sabrina; Hamroun, Aghilès; Bigna, Jean-Joël; Allado, Edem; Förger, Frauke; Molto, Anna (2022). Fertility and pregnancy outcomes in women with spondyloarthritis: a systematic review and meta-analysis. Rheumatology, 61(4), pp. 1314-1327. Oxford University Press 10.1093/rheumatology/keab589

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OBJECTIVE

To determine the impact of spondyloarthritis (SpA) and its treatments on fertility and pregnancy outcomes, as well as the impact of pregnancy on disease activity.

METHODS

A systematic review and meta-analyses were performed, including studies in women with SpA (axial (axSpA) and peripheral SpA, including psoriatic arthritis (PsA)). The heterogeneity between studies was quantified (I2), and in case of substantial heterogeneity, the results were reported in a narrative review.

RESULTS

Within 4397 eligible studies, 21 articles were included, assessing overall 3566 patients and 3718 pregnancies compared to 42264 controls. Fertility suffers from a lack of data in the literature. We found an increased risk of preterm birth (pooled OR 1,64 [1,15-2,33], I2 =24% in axSpA and 1,62 [1,23-2,15], I2 =0,0% in PsA), small for gestational age (pooled OR 2,05, [1,09-3,89], I2 =5,8% in axSpA), preeclampsia (pooled OR 1,59, [1,11-2,27], I2 =0% in axSpA) and caesarean section (pooled OR 1,70 [1,44-2,00], I2 =19,9% in axSpA and 1,71 [1,14-2,55], I2 =74,3% in PsA), without any other unfavourable pregnancy outcome. Further analysis showed a significant higher risk for elective caesarean (pooled OR 2,64, [1,92-3,62], I2 =0,0% in axSpA and 1,47, [1,15-1,88], I2 =0,0% in PsA), without increased risk for emergency caesarean in PsA. During pregnancy, there appears to be a tendency for unchanged or worsened disease activity in axSpA and unchanged or improved disease activity in PsA. Both conditions tend to flare in postpartum period.

CONCLUSION

SpA seems to be associated with an increased risk of preterm birth, small for gestational age, preeclampsia, and caesarean section.

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