BACKGROUND Autosomal recessive hereditary spastic paraplegia (HSP) due to AP4M1 mutations is a very rare neurodevelopmental disorder reported for only a few patients. METHODS We investigated a Greek HSP family using whole exome sequencing (WES). RESULTS A novel AP4M1A frameshift insertion, and a very rare missense variant were identified in all three affected siblings in the compound hetero...

Snodgrass et al (1966) divided the D trisomy syndrome into two phenotypic categories based on facial appearance. Patients in their first category had facies associated with defects of prosencephalic cleavage. A striking finding was median cleft lip and palate. In addition there was orbital hypotelorism with severe ocular anomalies, hypoplasia or aplasia of the crista galli, of the median philtr...

Recently five patients with an Albright hereditary osteodystrophy (AHO)-like phenotype were reported to have a subtelomeric deletion of the long arm of chromosome 2. These patients showed a striking resemblance to a number of patients from a large pedigree known to us for a long time. After molecular confirmation of a subtelomeric deletion in one patient, FISH analysis was used and a cryptic tr...

The cardiofaciocutaneous (CFC) syndrome is a condition of sporadic occurrence, with patients showing multiple congenital anomalies and mental retardation. It is characterised by failure to thrive, relative macrocephaly, a distinctive face with prominent forehead, bitemporal constriction, absence of eyebrows, hypertelorism, downward-slanting palpebral fissures often with epicanthic folds, depres...

Trisomy 9 is a rare chromosome disorder with high neonatal mortality. It is often seen in mosaic form. Most patients who survive are severely mentally retarded. The main features of this syndrome are "bulbous" nose, microphthalmia, dislocated limbs, and other anomalies of skeletal, cardiac, genitourinary, and central nervous system. Most patients have developmental and cognitive impairment. Pat...

Tricho-rhino-phalangeal syndrome type I (TRPSI) is a rare autosomal dominant hereditary disorder characterized by sparse hair, bulbous nose, long philtrum, thin upper lip, and skeletal abnormalities including cone-shaped epiphyses, shortening of the phalanges, and short stature. TRPSI is caused by mutations in the TRPS1 gene. Herein, we report two Korean cases of TRPSI. Although both patients (...

Alagille syndrome is a rare, autosomal, complex, dominant disorder associated with dysfunction of the liver, heart, skeleton, and eyes, as well as characteristic facial appearance. It is associated with the defect in component of the Notch signalling pathway. Here, we review the main features of Alagille syndrome with special focus on oro-facial manifestations like prominent forehead, moderate ...

Pseudoacromegaly is characterized by an acromegalic appearance without any abnormality of growth hormone function. It may be caused by several congenital and acquired conditions. One such condition is the acromegaloid facial appearance (AFA) syndrome. This condition has been described in approximately eight cases/families. It encompasses a spectrum of acromegaloid physical findings, normal grow...

Tricho-rhino-phalangeal syndrome (TRPS) is a heritable congenital syndrome characterized by craniofacial and skeletal abnormalities. TRPS is an autosomal dominant syndrome with high penetrance and wide phenotypic variability. TRPS is classified into three subtypes; TRPS types I (TRPS I; OMIM 190350) and III (TRPS III; OMIM 190351) have distinct clinical manifestations that often correspond to d...