Linkage of X-linked nephrogenic diabetes insipidus with DXS52, a polymorphic DNA marker.

In five families with X-linked nephrogenic diabetes insipidus (NDI), linkage studies with the DNA marker DXS52, defined by probe St14, have shown no recombination with a maximum combined lod score of 6.40. These results assign the NDI gene to the subtelomeric region of the X chromosome long arm. This finding should facilitate identification of carriers and should also be helpful in finding the NDI gene itself.