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Congenital Anomalies of the Extremities Occurring in Siblings
Takehiko Takagi1,2, Atsuhito Seki2, Joji Mochida1
1* Department of Orthopaedic Surgery, Surgical Science, Tokai University School of Medicine, Kanagawa, Japan.
Insights
Genetic factors in congenital limb anomalies are not fully understood. This study found a tendency for these anomalies to occur in multiple siblings, particularly males and bilateral cases, suggesting a possible hereditary component.
Area of Science:
- Medical Genetics
- Pediatric Orthopedics
- Clinical Genetics
Background:
- Congenital anomalies of the extremities are a concern for parents regarding recurrence risk.
- The inheritance patterns of many extremity anomalies remain unclear.
Purpose of the Study:
- To investigate the occurrence and characteristics of congenital anomalies of the extremities in siblings.
- To better understand the potential hereditary factors in these conditions.
Main Methods:
- Retrospective review of sibling cases of congenital anomalies of the extremities.
- Analysis of case characteristics, including laterality and sex.
Main Results:
- No specific disease pattern was identified among affected siblings.
- A higher incidence of bilateral cases and cases occurring in brothers was observed.
Conclusions:
- While familial occurrence is suggested by male and bilateral case prevalence, exceptions exist.
- The possibility of hereditary factors should be considered in all cases of congenital extremity anomalies.
- Genetic heterogeneity is likely involved, necessitating careful genetic counseling for affected families.
Background:
When examining children with congenital anomalies of the extremities, it is not uncommon for parents to ask about the possibility of similar anomalies occurring in their next child. However, the inheritance of the disease in many congenital anomalies of the extremities has never been elucidated.
Methods:
In the present study we reviewed cases of their occurrence in siblings that we encountered in our department, and we investigated their characteristics.
Results:
The results did not reveal any disease specificity, but a tendency for bilateral cases and male cases (cases in brothers) to be more common was observed.
Conclusions:
In recent years there have been reports of the discovery of causative genes in some congenital anomalies, but because cases of occurrence in siblings with no familial occurrence in the past are seen, there may be a variety of causative genes in many congenital anomalies. In the present study there were many male cases (cases in brothers) and many bilateral cases, and there appears to have been a strong possibility of familial occurrence in such cases, but there were also quite a few exceptions. It is necessary to bear the possibility of heredity in mind in every case and provide the parents with an explanation.
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