Socioeconomic Determinants of the Chemical Exposome and Its Genotoxic Effects in Children (PESTIFOL)

Institut Cancerologie de l'Ouest

Status: Enrolling

Conditions: Healthy Volunteer Children

Treatments: Other: Socio-economic questionnaires; Other: Hair cut

Study type: Interventional

Funder types: Other

Identifiers

NCT06314633

ICO-2023-13

Details and patient eligibility

About

PESTIFOL will include children over 8 and under 12 years old of different socioeconomic positions (SEP), mostly living in the region of Pays de la Loire. This approach should enable us to assess the impact of the SEP, and therefore social inequalities, on chemical expositions and DNA damage, and to characterize which (classes/mixture of) pollutants are major source of DNA damage. The study will also address potential effects associated with geographical location on the exposome and its biological consequences.

Full description

Growing evidence points to a complex influence of the exposome on health outcomes. Epidemiological studies show associations between pesticides and cognitive delay and cancers. Only few were conducted in children. Chemical exposures differ between socioeconomic groups. The more disadvantaged the group, the higher are some exposures. However, the effect of the exposome on health is complicated to assess due to the long latencies of most diseases. It is therefore important to link social and chemical exposures to 'immediate' outcomes or molecular risk factors for human diseases. There is a strong connection between DNA damage and chronic diseases such as cancers. However, it is difficult to attribute these risks to specific impregnations.

The present study will address the impact of socioeconomic position, hence social inequalities, on environmental exposures and their biological consequences in children. Our approach is to detect DNA damage in hair follicles and associate these measurements with pesticide detections in the hair matrix and socioeconomic position (SEP).

PESTIFOL will include children over 8 and under 12 years old of different socioeconomic positions (SEP), mostly living in the region of Pays de la Loire. This approach should enable us to assess the impact of the SEP, and therefore social inequalities, on chemical expositions and DNA damage, and to characterize which (classes/mixture of) pollutants are major source of DNA damage. The study will also address potential effects associated with geographical location on the exposome and its biological consequences.

Enrollment: 140 estimated patients

Sex: All

Ages: 8 to 12 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Children over 8 and under 12 years old at the time of inclusion
• Children in school in class level CE2, CM1 or CM2
• Living in the Pays de La Loire region, at least 80% of the time
• Written informed assent and consent obtained from the participant and both parents or legal representative prior to performing any protocol-related procedures.

Exclusion criteria

- Disorder precluding understanding of trial information or informed assent.

Trial design

Primary purpose: Health Services Research

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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140 participants in 1 patient group

study procedures

Other group

Description:

Hair cut for DNA damage and chemical exposome variation analysis and Socio-economic characteristics

Treatment:

Other: Socio-economic questionnaires

Other: Hair cut