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[Risk factors for the development of germ cell tumors in children]
A Fajardo-Gutiérrez1, M Gómez-Gómez, C Danglot-Banck
1Unidad de Investigación Médica, Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, México, D.F.
Insights
Winter conception and low parental education are key risk factors for childhood germ cell tumors (GCT) in Mexico City. Parental exposure to dust and electricity also increased risk, while infections showed a protective effect.
Area of Science:
- Pediatric Oncology
- Environmental Epidemiology
- Cancer Etiology
Context:
- Childhood germ cell tumors (GCT) represent a significant oncological challenge.
- Mexico City (MC) presents unique environmental and socioeconomic factors potentially influencing GCT development.
- Understanding GCT risk factors is crucial for targeted prevention and early detection strategies.
Purpose:
- To identify environmental and socioeconomic risk factors associated with pediatric GCT in Mexico City.
- To investigate the association between conception timing, parental education, and occupational exposures with GCT risk.
- To explore potential protective factors, such as infections, in the development of GCT.
Summary:
- A case-control study in Mexico City identified significant risk factors for pediatric GCT, including conception during winter (OR=7.6), low parental education (OR=2.9), and combined parental exposure to dust and electricity before pregnancy (OR=26).
- Parental exposure to dust and electricity during and after pregnancy also showed increased GCT risk (OR=8.58 and OR=9.66, respectively).
- Repetitive infections during infancy demonstrated a protective effect against GCT development.
Impact:
- Findings suggest potential links between environmental exposures, socioeconomic status, and GCT etiology.
- Winter conception association supports infectious etiology theories for GCT.
- Results highlight the need for further epidemiological research to elucidate GCT development mechanisms and inform public health interventions.
Abstract:
The search for risk factors for development of germ cell tumors (GCT) in children who lived in Mexico City (MC). A protective, observational, case-control study was conducted in children under 15 years of age resident in MC, insurer by the Mexican Institute of Social Security. The study population was selected between January 1st, 1990 and December 31st, 1994. Parents of the children were interviewed with a 230-items precoded questionnaire, validated previously with a pilot study. For analysis were obtained simple frequencies and odds ratios (OR) and 95% confidence interval (95%CI). There were 21 cases and 105 controls. The most significant risk factors were winter conception (OR = 7.6, 95% CI 1.5-39.3; P = 0.007); low parental education level (OR = 2.9, 95% CI 1.1-7.5; P = 0.026); and parental combined dust and electricity exposure before pregnancy (OR = 26, 95% CI 2.28-1291.86; P = 0.0007). during (OR8.58, 95% CI 0.89-106.55; P = 0.041) and after pregnancy (OR = 9.66, 95% CI 0.99-120.22; P = 0.027). There was a protective effect with repetitive infections during infancy. In conclusion, Winter conception is in accordance with infectious etiology theory of GCT development. The low parental education level and the combined exposure to dust and electricity are very important. The protective effect of repetitive infections and other factors make necessary more epidemiologic studies in this field.