Linkage Analysis, Detailed Map of NKX5-3, and Mutation Analysis
(A) Linkage analysis with microsatellites from chromosome 4.
(B) The 11.9 Mb candidate region on chromosome 4p16.1 containing several candidate genes including NKX5-3 and genomic organization of NKX5-3. The coding region comprises two exons (shaded boxes); the homeodomain is designed by a black box.
(C) DNA sequence of NKX5-3 in a normal control (+/+), one heterozygous parent (VIII.2) (+/−), and the homozygous proband (IX.2) (−/−). The homozygous deletion was also found in patients VII.8 and VII.9.