Ciliary Dyskinesia, Primary, 4

For a phenotypic description and a discussion of genetic heterogeneity of primary ciliary dyskinesia and Kartagener syndrome, see CILD1 (244400).

Mapping

Jeganathan et al. (2004) studied 4 Israeli Druze families segregating primary ciliary dyskinesia. Six of the 7 affected individuals had situs inversus, and electron microscopy defined an ultrastructural phenotype of partial absence of the inner dynein arms. In 3 of the 4 families, the disorder showed linkage to 15q13.1-q15.1 (maximum multipoint lod score of 3.2 at alpha (proportion of linked families) = 0.7). A 17-cM critical region was defined by recombination events at D15S1012 and D15S1048.