International audienceIdiopathic scoliosis is a spine disorder of unknown origin with 1.5-3% prevalence in the general population. Besides the large multifactorial form sample of idiopathic scoliosis, there is a good evidence for the existence of a monogenic subgroup in which the disease is inherited in a dominant manner. However, results from literature suggest a strong heterogeneity in the locations of the mutated genes. Using a high resolution genome-wide scan, we performed linkage analyses in three large multigenerational idiopathic scoliosis families compatible with dominant inheritance including 9 to 12 affected members or obligate carriers. In two of these families, our results suggested intra-familial genetic heterogeneity whereas, in the other, we observed a perfect marker disease co-segregation in two regions at 3q12.1 and 5q13.3. We can state that one of these two locations is a novel idiopathic scoliosis disease gene locus, since the probability of having this perfect co-segregation twice by chance in the genome is very low (p=0.001). Lastly, in all three families studied, linkage to the previously mapped dominant idiopathic scoliosis loci on chromosomes 19p13.3, 17p11.2, 9q34, 17q25 and 18q is unlikely, confirming that there is a high genetic heterogeneity within the subgroup of dominant forms of idiopathic scoliosis
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.