Frontiers in Pharmacology (Mar 2022)

Biological and Methotrexate Survival after Pregnancy in Patients With a Rheumatic Disease

  • Helena Tahmasian,
  • Hieronymus T. W. Smeele,
  • Pascal H.P. de Jong,
  • Radboud J. E. M. Dolhain,
  • Elise van Mulligen,
  • Elise van Mulligen

DOI
https://doi.org/10.3389/fphar.2022.826034
Journal volume & issue
Vol. 13

Abstract

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Objective: Patients with a rheumatic disease who discontinue their disease-modifying anti-rheumatic drug (DMARD) due to pregnancy often wonder if treatment will be as effective after pregnancy. This study investigates the effect of a temporary discontinuation of DMARDs due to pregnancy on the effectiveness of the same DMARD postpartum in patients with a rheumatic disease.Methods: Pregnant, rheumatic patients were derived from the Preconceptional Counseling in Active Rheumatoid Arthritis (PreCARA) cohort. DMARD-survival after pregnancy, for biological and methotrexate (MTX) therapy, was analyzed and compared to controls with stable DMARD-treatment from a retrospective cohort.Results: In total, 234 patients were included, of whom 114 patients had stable biological or MTX treatment before their pregnancy. After pregnancy, 40 out of 56 (71%) patients restarted their biological, for MTX this was 49%. One year after restart, and censoring for a following pregnancy, 88.9% of patients were still using their biological, and 85% still used their MTX (p = 0.92). Compared to the matched controls the survival after pregnancy was significantly lower 1 year after restart for both biologicals (98.3%) and MTX (99.6%); p = 0.002 and p < 0.001 respectively; 3 years after restart this significant difference was no longer observed (p = 0.50 and p = 0.33, respectively).Conclusion: Effective DMARD (biological or MTX) treatment before pregnancy that was discontinued due to pregnancy seems effective after pregnancy. Although DMARD-survival was higher in the control group 1 year after restart, the percentage of patients with effective treatment was still very good (>85%). In addition, this difference was no longer observed after 3 years.

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