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Poster presentations: Clinical: Diagnosis and Outcome 2020

P155 Clinical utility of fecal calprotectin in monitoring disease activity and predicting relapse in pregnant patients with inflammatory bowel diseases

R. Amihai1, T. Mishael2, S. Grisaru-Granovski2, B. Koslowsky2, G. Abitbol2, E. Goldin2, A. Bar-Gil Shitrit2

1Hadassah-Hebrew University Medical Center, Department of Obstetrics and Gynecology, Jerusalem, Israel, 2Shaare Zedek Medical Center, Department of Obstetrics and Gynecology, Jerusalem, Israel

Background

Inflammatory bowel diseases (IBDs) are commonly diagnosed in reproductive-aged women and can substantially affect pregnancy outcomes. Non-invasive monitoring of IBD during the prenatal course is particularly challenging as traditional laboratory biomarkers are often affected by pregnancy-related physiologic changes. We aimed to evaluate the role of fecal calprotectin (FC) in monitoring disease activity and predicting relapse among IBD women throughout gestation.

Methods

Women with IBD attending a multidisciplinary clinic for the preconception, antenatal and postnatal treatment were prospectively recruited during 2014–2018. FC levels were determined with an enzyme-linked immunoassay.

Results

A total of 265 FC (preconception, n = 41; first trimester, n = 48; second trimester, n = 84; third trimester, n = 76; postpartum, n = 16) measurements were obtained in 157 pregnancies. Higher FC concentrations were found in all time points in those with active disease than those in remission as assessed by either physician global assessment or disease clinical scores. FC levels were significantly correlated with physician global assessment and disease activity indices in all 5 periods of investigation. Excluding those with disease flare at the time of conception, disease relapse was encountered during the prenatal course in 40 (31.5%) of the remaining 127 pregnancies. FC levels were significantly higher in those who experienced a disease flare later in the course of gestation as compared with those who maintained clinical remission (median 341 vs. 224 μg/g, p = 0.04).

Conclusion

FC appears to be a reliable marker of ongoing disease activity throughout the prenatal course as well as a predictor of imminent disease flare among IBD pregnant patients.