UNASSIGNED: Consanguineous unions refer to marriages between related individuals who share a common ancestor. These unions are still commonplace in certain regions of the world such as the southern coast of the Mediterranean, throughout the Middle East and South-East Asia. According to available data, couples of second cousins or closer and their offspring currently represent 10.4% of the world's population, thus resulting in increased frequencies of @entity74 . Furthermore, consanguinity may be implicated in the increased frequency of multifactorial pathologies such as @entity146 . The few existing epidemiological studies in consanguineous and/or geographically isolated populations confirm that there is a significant association between consanguinity and @entity146 and a higher risk of @entity161 or @entity162 among offspring from consanguineous couples. There exists a strong and complex genetic component in the predisposition to @entity914 that has been confirmed in numerous studies. However, the genetic basis of these disorders remains poorly understood. GWAS studies (Genome Wide Association Studies) over the past 10 years have identified a few weak associations, thus refuting the "common diseases-common variants" hypothesis. A model implicating numerous rare variants has been supported by the recent discovery of CNVs (Copy Number Variants) and their statistically significant association with @entity146 such as @entity161 , @entity162 and @entity2438 . The study of consanguineous families may contribute to identifying rare variants in homogenous populations who have conserved certain alleles. Major developments in molecular biology techniques would facilitate these studies as well as contributing to identifying major genes. These results emphasize the need for genetic counseling in high-risk communities and the importance of implementing preventive actions and raising awareness concerning the risk of consanguineous unions.

Genetics and XXXX : A fresh look at consanguinity.

@entity162 :: ('MESH:D001714', 'Disease') :: ['bipolar disorders'] @entity146 :: ('MESH:D001523', 'Disease') :: ['mental disorders', 'psychiatric disorders'] @entity2438 :: ('MESH:D001321', 'Disease') :: ['autism'] @entity914 :: ('MESH:D011618', 'Disease') :: ['psychotic disorders'] @entity161 :: ('MESH:D012559', 'Disease') :: ['schizophrenia'] @entity74 :: ('MESH:D030342', 'Disease') :: ['autosomal recessive disorders']
@entity914 :: (MESH:D011618,Disease) :: ['psychotic disorders']
