Comorbidity in the Tunisian population.

Area of Science:

• Genetics
• Public Health
• Medical Genetics

Background:

• Genetic diseases pose a significant public health challenge in Tunisia, with over 400 identified disorders.
• Demographic, economic, and social factors, particularly consanguinity, influence the prevalence and distribution of these diseases.
• Existing information on genetic disease associations (comorbidity) in the Tunisian population is fragmented.

Purpose of the Study:

• To centralize information on genetic disease associations (comorbidity) in the Tunisian population.
• To highlight the occurrence of comorbidity in consanguineous populations.
• To draw the attention of clinicians and researchers to the complexities of genetic counseling and prenatal diagnosis in such cases.

Main Methods:

• Review and compilation of reported genetic disease associations within Tunisian families.
• Analysis of the role of consanguinity in comorbid associations.
• Identification of founder and private mutations responsible for primary and associated diseases.

Main Results:

• Seventy-five distinct genetic disease associations (comorbidity) were identified among Tunisian families.
• Consanguinity was a noted factor in 39 of these comorbid associations.
• Twenty-one founder and 11 private mutations were found to cause 34 primary diseases and 13 associated diseases.

Conclusions:

• Genetic disease comorbidity is a significant phenomenon in the Tunisian population, particularly in consanguineous families.
• The presence of comorbidity complicates genetic counseling and prenatal diagnosis, even when specific mutations are known.
• Centralizing data on genetic disease associations is crucial for improving clinical management and research in Tunisia.