{Reference Type}: Case Reports
{Title}: Lacrimo-auriculo-dento-digital syndrome: A novel mutation in a Korean family and review of literature.
{Author}: Ryu YH;Kyun Chae J;Kim JW;Lee S;
{Journal}: Mol Genet Genomic Med
{Volume}: 8
{Issue}: 10
{Year}: 10 2020
{Factor}: 2.473
{DOI}: 10.1002/mgg3.1412
{Abstract}: Lacrimo-auriculo-dento-digital (LADD) syndrome is a rare autosomal dominant disorder caused by mutations in one of the three genes: fibroblast growth factor receptor 2 (FGFR2), FGFR3, or FGF10. Affected patients have hypoplasia/aplasia of lacrimal ducts/glands, hypoplasia/aplasia of salivary glands, dental anomalies, ear anomalies, hearing loss, and digital anomalies.<BR>Proband was an 11-year-old male with xerostomia, xerophthalmia, and a referring diagnosis of Sjogren syndrome. He presented with microdontia, hypodontia, low-set/cupped ear auricles, and hearing loss in the left ear.<BR>Whole exome sequencing (WES) was performed on proband. Variations and segregation within the family were verified using Sanger sequencing.<BR>Molecular studies revealed a novel heterozygous missense mutation in exon 11 of FGFR2: c.1547C>T (p.Ala516Val), compatible with LADD syndrome.<BR>To the best of our knowledge, this is the first report of a family with LADD syndrome in Korea. The combination of xerostomia and xerophthalmia, seen in patients with LADD syndrome, may be misdiagnosed as Sjogren syndrome. WES may be a useful clinical tool in ascertaining the affected gene in patients with suspected genetic disorders. Here, a literature review and summary of 23 case reports/series of LADD syndrome are presented, which may help to identify patients with this condition.