Linkage analysis in lattice corneal dystrophy

Two kindreds of lattice corneal dystrophy (LCD) [McKusick, 1983, catalog No. 12220] were studied for linkage. Fifty-one relatives were examined clinically, and 27 affected and 24 normal persons were ascertained. Tight linkage could be excluded for 15 informative markers with LOD scores of less than -2.0. The largest positive LOD score was 0.56 at 0 = 0.17 for linkage between haptoglobin and LCD. Combined with a previous study, the combined LOD score is 0.96.