Congenital Heart Anomaly Risk in Maternal Enteroviral Infection and Diabetes

NCT ID: NCT04769167

Last Updated: 2025-12-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

114 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-02-01

Study Completion Date

2023-12-05

Brief Summary

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Beyond EV-B, there are clinical observations to implicate other viruses in birth defects, including CHD. Since the Rubella epidemic of 1960s', however, viruses have received little attention and certainly no comprehensive study, especially using next generation sequencing (NGS), has been undertaken in this context. The current pandemic as well as those caused by Zika, influenza, Ebola and Lassa Fever (among many) have shown pregnant women and their baby are at high risk. Therefore, an open-minded approach is warranted when considering the role of maternal viral infections in CHD. Even less is known about maternal immune response, such as antibody production, to these viruses.

The investigator's goal is to answer the above gaps in knowledge. The investigators propose to do that using two different approaches; one retrospective (analysis of samples in two existing, large biorepositories) and the other prospective. The investigator's have created a multi-disciplinary team to bring together the needed expertise from individuals who have overlapping and vested interest in this project.

The investigator's specific aim is to examine the diversity of the gut virome in non-pregnant and pregnant women with and without diabetes, with special emphasis on known cardiotropic viruses (those with tropism for cardiac tissues). This study is seen by the investigator's as the first step prior to a larger prospective multi-institutional study to specifically assess the linkage between the maternal virome and CHD pathogenesis.

Detailed Description

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To determine prevalence in non-pregnant women (i) the investigators will perform PCR analysis of stool and blood from a prospective cohort of 225 women with diabetes (and 225 without) and sequence the amplicons, and (ii) perform ELISA (IgM and IgG) analysis of sera collected concurrently. They will assay IgM/IgG positive samples for neutralizing antibodies. To determine prevalence in pregnant women (i) the investigators will perform PCR analysis of 1st trimester stool and blood from a prospective cohort of 450 women with diabetes (and 450 without diabetes) and sequence the amplicons, and (ii) perform ELISA (IgM and IgG) analysis of sera collected at 1st and 2nd or 3rd trimester. They will assay IgM/IgG positive samples for neutralizing antibodies.

The investigators will also perform a comprehensive virome analysis using metagenomic shotgun sequencing with ViroCap enrichment, a method developed by co-PI, on 1st trimester stool samples from a subset (\~4-500) of women (both EVB positive and negative) enrolled in Aim 1. The investigators will complement this data with VirScanĀ® analysis of blood collected from the same women at 1st and 2nd/3rd trimester. VirScanĀ® is a revolutionary new technique for comprehensive profiling of sera for antibodies against \~400 species and strains of pathogenic viruses.

Conditions

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Congenital Heart Disease Viremia Virus Diseases Enterovirus Enterovirus Infections Heart Defects, Congenital Heart Diseases Prenatal Infection Diabetes Diabetes Mellitus, Type 2 Diabetes Mellitus, Type 1 Diabetes Mellitus Pregnancy in Diabetic Pregnancy Complications Prenatal

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

FACTORIAL

All participants will provide the same biologic specimens (stool \& blood) during their study arm's designated timeframe. All collected specimens will be analyzed per the study protocol.
Primary Study Purpose

SCREENING

Blinding Strategy

SINGLE

Participants
All participant's will not know whether they had evidence of recent viremia as this analysis is conducted in the future and the diagnosis of enteroviral viremia does not impact clinical treatment.

Study Groups

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Healthy Non Pregnant Women (HNPW)

HNPW are healthy women and not pregnant

Group Type PLACEBO_COMPARATOR

Stool and Blood Specimen Collection

Intervention Type OTHER

Stool and Blood specimens will be collected at 3 designated time points

Follow-up Medical Record Review

Intervention Type OTHER

Participant medical records as well as the medical records of infants during study enrollment will be reviewed up to 3 years from the date of enrollment.

Diabetic Non Pregnant Women (DNPW)

DNPW are diabetic and not pregnant

Group Type ACTIVE_COMPARATOR

Stool and Blood Specimen Collection

Intervention Type OTHER

Stool and Blood specimens will be collected at 3 designated time points

Follow-up Medical Record Review

Intervention Type OTHER

Participant medical records as well as the medical records of infants during study enrollment will be reviewed up to 3 years from the date of enrollment.

Healthy Pregnant Women (HPW)

HNPW are healthy women and currently pregnant

Group Type PLACEBO_COMPARATOR

Stool and Blood Specimen Collection

Intervention Type OTHER

Stool and Blood specimens will be collected at 3 designated time points

Follow-up Medical Record Review

Intervention Type OTHER

Participant medical records as well as the medical records of infants during study enrollment will be reviewed up to 3 years from the date of enrollment.

Diabetic Pregnant Women (DPW)

DNPW are diabetic and currently pregnant

Group Type ACTIVE_COMPARATOR

Stool and Blood Specimen Collection

Intervention Type OTHER

Stool and Blood specimens will be collected at 3 designated time points

Follow-up Medical Record Review

Intervention Type OTHER

Participant medical records as well as the medical records of infants during study enrollment will be reviewed up to 3 years from the date of enrollment.

Interventions

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Stool and Blood Specimen Collection

Stool and Blood specimens will be collected at 3 designated time points

Intervention Type OTHER

Follow-up Medical Record Review

Participant medical records as well as the medical records of infants during study enrollment will be reviewed up to 3 years from the date of enrollment.

Intervention Type OTHER

Eligibility Criteria

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Exclusion Criteria

1. Women under the age of 18 or older than 45.
2. Prediabetes defined as an HbA1C between 5.7% and 6.5% or current diagnosis of pancreatic diabetes or gestational diabetes (GDM).
3. Body Mass Index greater than or equal to 35 or less than or equal to 18.
4. Women unable to give informed consent and/or considered a prisoner.
5. Use of any of the following drugs within the last 6 months:

5a.Systemic antibiotics, antifungals, antivirals or antiparasitics (intravenous, intramuscular, or oral); 5b.Cytokines; 5c. Immunomodulators or immunosuppressive cytotoxic agents; 5d. Large doses of commercial probiotics consumed (greater than or equal to 108 cfu or organisms per day) - includes tablets, capsules, lozenges, chewing gum or powders in which probiotic is a primary component. Ordinary dietary components such as fermented beverages/milks, yogurts, foods do not apply.

6\. A positive test for HIV, HBV or HCV or any confirmed or suspected condition/state of immunosuppression or immunodeficiency.

7\. History of autoimmune disorders other than T1D or treated thyroid disease.

8\. Major surgery of the GI tract, except for cholecystectomy and appendectomy, in the past five years.

9\. Any major bowel resection at any time.

10\. History of active uncontrolled gastrointestinal disorders or diseases including: 10a. Inflammatory bowel disease (IBD) including ulcerative colitis (mild-moderate-severe), 10b. Crohn's disease (mild-moderate-severe), or indeterminate colitis; 10c. Irritable bowel syndrome (IBS) (moderate-severe); 10d. Persistent, infectious gastroenteritis, colitis or gastritis, persistent or chronic diarrhea of unknown etiology, Clostridium difficile infection (recurrent) or Helicobacter pylori infection (untreated).

11\. Acute disease at the time of enrollment (defer sampling until subject recovers). Acute disease is defined as the presence of a moderate or severe illness with or without fever.

12\. Use of assisted reproductive technology (ART)including but not limited to In vitro Fertilization (IVF), Gamete intrafallopian transfer (GIFT) and Zygote intrafallopian transfer (ZIFT).

13\. Any other condition which, in the opinion of the investigators, renders the patient unfit for study participation and procedures.
Minimum Eligible Age

18 Years

Maximum Eligible Age

45 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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Washington University School of Medicine

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Pirooz Eghtesady, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Faculty

Locations

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Barnes Jewish Hospital

St Louis, Missouri, United States

Site Status

St Louis Childrens Hospital

St Louis, Missouri, United States

Site Status

Countries

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United States

Other Identifiers

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202002043

Identifier Type: -

Identifier Source: org_study_id