Congenital Heart Anomaly Risk in Maternal Enteroviral Infection and Diabetes

NCT04769167 | Completed

• 1 other identifier: 202002043
• Study Type: interventional
• Target: 114
• Locations: 1 country
• Sites: 2

Brief Summary

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.

Conditions

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

Outcome Measures

Primary Outcomes (3)

• Prevalence of EVB Viremia

  Determine the prevalence of EVB among women with or without diabetes. For this aim, the investigators will use PCR analysis of stool and blood to detect EVB and ELISA (IgM and IgG) of blood to detect anti-EVB antibodies in samples collected from pregnant and non-pregnant women (with or without diabetes) at multiple time points. The investigators will also sequence the PCR amplicons and carry out antibody neutralization assays of IgM/IgG positive samples to identify the specific EVB. The non-pregnant cohort will consist of 225 women with diabetes (and 225 without) sampled at 3-month intervals over 1 years. The pregnant cohort will consist of 450 women with diabetes (and 450 without) with sampling at 1st, 2nd and 3rd trimesters.

  6 years

• Cardiotropic Virus Detection

  Determine the burden of other pathogenic human viruses in pregnant women with diabetes. Beyond EVB, other viruses could (and likely do) cause CHD. Further, while PCR is quite sensitive for detection of nucleic acid sequences of interest, its results are primer dependent. Therefore, in this aim, the investigators will perform a comprehensive virome analysis (the viral component of the microbiome) using metagenomic shotgun sequencing with ViroCap enrichment, a method developed by a co-PI of this proposal, 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 VirScan® (version 3) analysis of blood collected from the same women at 1st and 2nd/3rd trimester. VirScan® is a revolutionary new technique for comprehensive profiling of sera for antibodies against \~400 species and strains of pathogenic human viruses.

  6 years

• Maternal Immune Response

  Determine the extent of correlation between EVB and other viruses with CHD. Because CHD cannot typically be diagnosed until 20-24 weeks gestation and the investigators are prospectively enrolling participants at 6-14 weeks, they will not know which participants will develop CHD during the enrolled pregnancies. The investigators anticipate \~40-50 CHD-affected pregnancies. If not done in Aim 2, the investigators will carry out virome (blood and stool) and VirScan® (blood) analysis of 1st trimester samples from these women.

  6 years

Study Arms (4)

Healthy Non Pregnant Women (HNPW)

PLACEBO COMPARATOR

HNPW are healthy women and not pregnant

Other: Stool and Blood Specimen Collection; Other: Follow-up Medical Record Review

Diabetic Non Pregnant Women (DNPW)

ACTIVE COMPARATOR

DNPW are diabetic and not pregnant

Other: Stool and Blood Specimen Collection; Other: Follow-up Medical Record Review

Healthy Pregnant Women (HPW)

PLACEBO COMPARATOR

HNPW are healthy women and currently pregnant

Other: Stool and Blood Specimen Collection; Other: Follow-up Medical Record Review

Diabetic Pregnant Women (DPW)

ACTIVE COMPARATOR

DNPW are diabetic and currently pregnant

Other: Stool and Blood Specimen Collection; Other: Follow-up Medical Record Review

Interventions

Stool and Blood Specimen Collection OTHER

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

Diabetic Non Pregnant Women (DNPW); Diabetic Pregnant Women (DPW); Healthy Non Pregnant Women (HNPW); Healthy Pregnant Women (HPW)

Follow-up Medical Record Review 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); Diabetic Pregnant Women (DPW); Healthy Non Pregnant Women (HNPW); Healthy Pregnant Women (HPW)

Eligibility Criteria

• Age: 18 Years - 45 Years
• Gender Eligibility Details: Women born with a female reproductive system.
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may not qualify if:

• Women under the age of 18 or older than 45.
• Prediabetes defined as an HbA1C between 5.7% and 6.5% or current diagnosis of pancreatic diabetes or gestational diabetes (GDM).
• Body Mass Index greater than or equal to 35 or less than or equal to 18.
• Women unable to give informed consent and/or considered a prisoner.
• Use of any of the following drugs within the last 6 months:
• a.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.
• \. A positive test for HIV, HBV or HCV or any confirmed or suspected condition/state of immunosuppression or immunodeficiency.
• \. History of autoimmune disorders other than T1D or treated thyroid disease.
• \. Major surgery of the GI tract, except for cholecystectomy and appendectomy, in the past five years.
• \. Any major bowel resection at any time.
• \. 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).
• \. 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.
• \. Use of assisted reproductive technology (ART)including but not limited to In vitro Fertilization (IVF), Gamete intrafallopian transfer (GIFT) and Zygote intrafallopian transfer (ZIFT).
• \. Any other condition which, in the opinion of the investigators, renders the patient unfit for study participation and procedures.

Sponsors & Collaborators

• Washington University School of Medicine: lead

Study Sites (2)

Barnes Jewish Hospital

St Louis, Missouri, 63110, United States

Location

St Louis Childrens Hospital

St Louis, Missouri, 63110, United States

Location

MeSH Terms

Conditions

Heart Defects, Congenital; Viremia; Virus Diseases; Enterovirus Infections; Heart Diseases; Diabetes Mellitus; Diabetes Mellitus, Type 2; Diabetes Mellitus, Type 1; Pregnancy in Diabetics; Pregnancy Complications

Interventions

Defecation; Blood Specimen Collection

Condition Hierarchy (Ancestors)

Cardiovascular Abnormalities; Cardiovascular Diseases; Congenital Abnormalities; Congenital, Hereditary, and Neonatal Diseases and Abnormalities; Infections; Sepsis; Systemic Inflammatory Response Syndrome; Inflammation; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Picornaviridae Infections; RNA Virus Infections; Glucose Metabolism Disorders; Metabolic Diseases; Nutritional and Metabolic Diseases; Endocrine System Diseases; Autoimmune Diseases; Immune System Diseases; Female Urogenital Diseases and Pregnancy Complications; Urogenital Diseases

Intervention Hierarchy (Ancestors)

Digestive System Physiological Phenomena; Digestive System and Oral Physiological Phenomena; Specimen Handling; Clinical Laboratory Techniques; Diagnostic Techniques and Procedures; Diagnosis; Punctures; Surgical Procedures, Operative; Investigative Techniques

Study Officials

• Pirooz Eghtesady, MD, PhD

  Faculty

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Masking Details: 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.
• Purpose: SCREENING
• Intervention Model: FACTORIAL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: 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.

Study Record Dates

• First Submitted: February 14, 2021
• First Posted: February 24, 2021
• Study Start: February 1, 2021
• Primary Completion: December 5, 2023
• Study Completion: December 5, 2023
• Last Updated: December 24, 2025

Record last verified: 2025-12

Locations

US (2)