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Maternal Serum BLyS Levels Throughout Pregnancy

NCT03364712 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 222

Last updated 2017-12-06

No results posted yet for this study

Summary

Background and rationale: B lymphocyte stimulator (BLyS) is a potent B cell survival factor that has been found to be elevated in patients with inflammatory conditions, such as systemic lupus and rheumatoid arthritis. Because of the immunologic changes associated with pregnancy, including changes in levels of T and B lymphocytes, it is postulated that BLyS levels would be altered in pregnancy compared to the non-pregnant state.

Objectives: The primary objective of this study is to assess the levels of BLyS in each trimester of pregnancy. Secondary objectives include evaluation of an association between BLyS levels and adverse pregnancy events; comparison of BLyS levels between healthy pregnant women and pregnant women with a medical or obstetric conditions; and, assessment of APRIL levels and comparison between APRIL levels and BLyS levels in study subjects.

Study population: Pregnant and non-pregnant women receiving care in the outpatient Obstetrics and Gynecology clinics at LAC+USC Medical Center.

Study methodology: Peripheral blood samples will be drawn from pregnant women and non-pregnant controls. Pregnant women will have blood drawn each trimester, at delivery, and postpartum, and control subjects will have blood drawn once, upon enrollment in the study.

Study outcomes: BLyS and APRIL levels during each trimester, postpartum and in cord blood will be compared between healthy pregnant women, pregnant women with a medical condition, and healthy non-pregnant controls. Additionally, pregnancy outcomes will be recorded to determine whether BLyS or APRIL levels correlate with adverse events.

Statistics: Continuous data will be analyzed by Student t-test or logistic regression, where appropriate. Categorical data will be analyzed using Chi square.

Conditions

  • Pregnancy

Interventions

OTHER

routine medical care, venipuncture

Sponsors & Collaborators

  • University of Southern California

    lead OTHER

Eligibility

Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-09-19
Primary Completion
2014-06-30
Completion
2014-06-30

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03364712 on ClinicalTrials.gov