Journal
JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH
Volume 47, Issue 2, Pages 689-697Publisher
WILEY
DOI: 10.1111/jog.14585
Keywords
CD138 +; chronic endometritis; endometritis; recurrent pregnancy loss; Syndecan‐ 1
Categories
Funding
- Tommy's National Miscarriage center at the University Hospital of Coventry
- national institute of health research (NIHR)
- Warwickshire - Tommy's charity
- MRC [MR/R014167/1] Funding Source: UKRI
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Quantifying CD138+ cells by immunohistochemistry in women with a history of recurrent pregnancy loss is helpful to diagnose chronic endometritis and predict subsequent reproductive outcome. A cut-off value of 4-6 cells/hpf offers the best predictive accuracy with higher scores predicting worse reproductive outcome.
Objective To determine the value of uterine CD138+ cells, as a marker of chronic endometritis, in predicting subsequent reproductive outcome in women with history of recurrent pregnancy loss. Design A prospective longitudinal study. Setting Tertiary specialized clinic. Patients Women with history of recurrent pregnancy loss or implantation failure over a 12-months follow-up period. Intervention We quantified the CD138+ cells/high powered field (hpf) using immunohistochemistry and image analysis of endometrial biopsies obtained during the secretory stage post ovulation. Main outcome measures Live birth and subsequent pregnancy loss. We calculated the receiver operator curve for predicting subsequent pregnancy loss and reported using relative risk (RR) and 95% confidence intervals (CI). Results We enrolled 344 women of whom 88 became pregnant (88/344, 25.5%). Half of them had a subsequent live birth (47/88, 53%) and the rest lost their pregnancy (41/88, 46%). The median CD138+ score was significantly lower in the live birth group (P < 0.005) and women with a CD138+ score >= 16/hpf had a higher risk of subsequent miscarriage (RR 10.0, 95% CI 2.78-36.02). CD138+ cells count showed a good prediction for subsequent pregnancy loss in high-risk women with an area under the curve of 0.75 (95% CI 0.59-0.82, P = 0.01). A cut-off value of 4-6 cells/hpf offered the best predictive accuracy with higher scores predicting worse reproductive outcome. Our findings are limited by the small event rate and the sample size of our cohort. Conclusion Quantifying CD138+ cells by immunohistochemistry in women with a history of recurrent pregnancy loss is helpful to diagnose chronic endometritis and predict subsequent reproductive outcome.
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