Axenfeld-Rieger malformation and distinctive facial features: Clues to a recognizable 6p25 microdeletion syndrome.
Deletion of distal 6p is associated with a distinctive clinical phenotype including Axenfeld-Rieger malformation, hearing loss, congenital heart disease, dental anomalies, developmental delay, and a characteristic facial appearance. We report the case of a child where recognition of the specific ocular and facial phenotype, led to identification of a 6p microdeletion arising from a de novo 6:18 translocation. Detailed analysis confirmed deletion of the FOXC1 forkhead gene cluster at 6p25. CNS anomalies included hydrocephalus and hypoplasia of the cerebellum, brainstem, and corpus callosum with mild to moderate developmental delay. Unlike previous reports, hearing was normal.
Maclean
Kenneth
K
Department of Clinical Genetics, The Children's Hospital at Westmead, Sydney, New South Wales, Australia. k.maclean@victorchang.unsw.edu.au
Smith
James
J
St Heaps
Luke
L
Chia
Nicole
N
Williams
Rebecca
R
Peters
Gregory B
GB
Onikul
Ella
E
McCrossin
Tim
T
Lehmann
Ordan J
OJ
Adès
Lesley C
LC
D000015:Abnormalities, Multiple / Q000235:genetics* / Q000473:pathology; D002871:Chromosome Banding; D002872:Chromosome Deletion; D002896:Chromosomes, Human, Pair 6 / Q000235:genetics*; D005124:Eye Abnormalities; D005145:Face / Q000002:abnormalities*; D006801:Humans; D007223:Infant; D007621:Karyotyping; D008297:Male; D013577:Syndrome; D014071:Tooth Abnormalities