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Increased prevalence of minor anomalies in childhood malignancy
Insights
Children with malignant diseases and their siblings exhibit a higher prevalence of minor anomalies compared to controls. These findings highlight potential genetic links and the need for further research into childhood cancers.
Area of Science:
- Pediatric Oncology
- Clinical Genetics
- Human Malformations
Background:
- Childhood malignant diseases are complex conditions with potential genetic underpinnings.
- Previous studies suggest a possible association between certain congenital anomalies and an increased risk of cancer.
- Understanding these associations can aid in early detection and risk assessment.
Purpose of the Study:
- To investigate the prevalence of major malformations and minor anomalies in children with malignant disease.
- To compare anomaly rates in affected children, their siblings, and matched control groups.
- To explore potential associations between specific anomalies and types of childhood cancer.
Main Methods:
- A case-control study involving 106 children with malignant disease, 81 siblings, and 106 controls.
- Comprehensive body measurements and assessment of 57 minor anomalies.
- Sonography used for detecting renal malformations.
Main Results:
- Leukaemic children showed significantly smaller head circumference than controls.
- No significant differences in major malformations, including renal anomalies, were observed between groups.
- Prevalence of minor anomalies was significantly higher in patients (69.2%) and siblings (63.0%) versus controls (34.6%).
- The Sydney line was more frequent in patients with solid tumors, but no specific anomaly patterns were linked to particular cancers.
Conclusions:
- Children with malignant diseases and their siblings have a significantly increased prevalence of minor anomalies.
- While major malformations are not more common, minor anomalies may indicate a shared genetic susceptibility.
- Further research is needed to elucidate the specific genetic factors and their role in childhood cancers.
Abstract:
Body measurements were taken and the prevalence of major malformations and of 57 minor anomalies was determined in 106 children with malignant disease, in 81 of their sibs, and in 106 control subjects matched to the patients according to sex, age and ethnic origin. Leukaemic children had a significantly smaller head circumference than the corresponding control children, but no significant differences in height, weight, anthropometric and syndromologic indices were found. No differences were observed in the frequency of associated major malformations including renal malformations detectable by sonography. The prevalence of minor anomalies was significantly higher in the patients with malignant disease and their sibs than in the control children: 69.2% of the patients, 63.0% of the sibs and 34.6% of the control subjects had at least one minor anomaly. When two and more minor anomalies were considered, the prevalence figures were 36.5%, 29.6% and 12.5%, respectively. Among the single minor anomalies only the Sydney line was significantly more frequent in patients with solid tumours. No specific association of an individual dysplasia or a pattern of minor anomalies with a given tumour could be established.