Assess the Correlation With Severe Respiratory Syncytial Virus Disease in the First 6 Months in Children With Congenital Heart Disease and Maternal Ac-AntiVSR Titers During Pregnancy

Respiratory Syncytial Virus, Congenital Heart Disease Clinical Trial

— (VSRyCC)  

Official title:

Assess the Correlation With Severe Respiratory Syncytial Virus Disease in the First 6 Months in Children With Congenital Heart Disease and Maternal Ac-AntiVSR Titers During Pregnancy

Clinical Trial Details — Status: Enrolling by invitation

Administrative data

• NCT number: NCT04734782
• Other study ID #: 025.2021
• Status: Enrolling by invitation
• Start date: February 15, 2021
• Est. completion date: March 31, 2022

Study information

• Verified date: January 2021
• Source: Hospital Angeles Lomas
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Passive transplacental immunity against the respiratory syncytial virus (RSV) appears to mediate infant protection during the first 6 months of life (1). Observations of environmental exposure in pregnant women during an RSV epidemic could influence these children's susceptibility to infection by offering levels of antibodies that are transferred to the fetus. However, there is no prospective study in the population at risk such as children with congenital heart disease, as well as the effective levels of anti-RSV immunoglobulin G (IgG) as protective biomarkers for RSV infection after delivery (2)

Justification

The most serious evolution of the clinical disease of acute RSV bronchiolitis in children under 6 months of age is related to lower exposure of the pregnant woman to the RSV epidemic. With maternal immunization through natural exposure, it is logical to relate protection to children for severe RSV disease. However, it is not proven (3).

1. - Nandapalan N, Taylor CE, Greenwell J, et al. Seasonal variations in maternal serum and mammary immunity to RS virus. J Med Virol. 1986;20(1):79-87. doi:10.1002/jmv.1890200110

2. - Stensballe LG, Ravn H, Kristensen K, Meakins T, Aaby P, Simoes EA. Seasonal variation of maternally derived respiratory syncytial virus antibodies and association with infant hospitalizations for respiratory syncytial virus. J Pediatr. 2009;154(2):296-298. doi:10.1016/j.jpeds.2008.07.053

3. - Ramos-Fernández JM, et al. Does exposure of pregnant women to epidemic respiratory syncytial virus affect the severity of bronchiolitis? Enferm Infec Microbiol Clin. 2017. https://doi.org/10.1016/j.eimc.2018.07.002)

Description:

A prospective cohort study of mothers with a prenatal diagnosis of a fetus with congenital heart disease will be carried out. To whom titers will be measured. Anti-RSV IGG antibodies result from previous exposure.

According to the IGG titers in anti-RSV serum, 2 groups will be formed:

Protective Mothers (high IGG titers) Non-protective mothers (low IGG titers) The products will be followed up for 6 months after birth to correlate the maternal titers of Ac anti-RSV with the presence and severity of respiratory infection by RSV (Bronchiolitis) in this period.

Population and period

Pregnant women evaluated in the National Medical Center 20 de Noviembre, Pediatric Cardiology service for the prenatal diagnosis of congenital heart disease in their fetuses. Newborns with corroborated congenital heart disease with prenatal diagnosis.

Study inclusion period February 1, 2021, to October 30, 2021. Study follow-up period March 1 2021 to December 30 2021.

Sample type: Non-randomized, for convenience, sequential and with an estimated of 30 patients per group.

Recruitment information / eligibility

• Status: Enrolling by invitation
• Enrollment: 60
• Est. completion date: March 31, 2022
• Est. primary completion date: December 31, 2021
• Accepts healthy volunteers: No
• Gender: All
• Age group: 1 Month to 12 Months

Eligibility

Inclusion Criteria:

1. Pregnant mothers in the third trimester of gestational age, with a child with congenital heart disease diagnosed by fetal echocardiogram

2. Approval of informed consent

3. Newborn of term or preterm, with corroborated congenital heart disease and presenting with a respiratory infection by RSV

Exclusion Criteria:

1. - Non-acceptance of informed consent

2. - Premature birth and need for neonatal intensive care for more than 4 weeks.

3. - Newborn with bronchopulmonary dysplasia

Elimination criteria

1.- Use of palivizumab

Related Conditions & MeSH terms

• Heart Defects, Congenital
• Heart Diseases
• Respiratory Syncytial Virus, Congenital Heart Disease
• Virus Diseases

Intervention

Diagnostic Test:
• Determination of antibodies in maternal serum IgG for respiratory syncytial virus
By venipuncture, a blood sample will be taken and the levels of anti-RSV IgG antibodies will be processed in serum by commercial techniques.

Locations

Country	Name	City	State
Mexico	Centro Medico Nacional 20 de Noviembre	Ciudad de Mexico

Sponsors (1)

Lead Sponsor	Collaborator
Hospital Angeles Lomas

Country where clinical trial is conducted

Mexico, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Determination of antibodies in maternal serum IgG for respiratory syncytial virus	By venipuncture, a blood sample will be taken and the levels of anti-RSV IgG antibodies will be processed in serum by commercial techniques.	12 months