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Hypohidrotic X-linked ectodermal dysplasia
Hypohidrotic ectodermal dysplasia (HED) is characterized by hypotrichosis (sparseness of scalp and body hair), hypohidrosis (reduced ability to sweat), and hypodontia (congenital absence of teeth). The cardinal features of classic HED become obvious during childhood. The scalp hair is thin, lightly pigmented, and slow growing. Sweating, although present, is greatly deficient, leading to episodes of hyperthermia until the affected individual or family acquires experience with environmental modifications to control temperature. Only a few abnormally formed teeth erupt, at a later-than-average age. Physical growth and psychomotor development are otherwise within normal limits. Mild HED is characterized by mild manifestations of any or all the characteristic features. [from GeneReviews]
ADULT syndrome
The TP63-related disorders comprise six overlapping phenotypes: Ankyloblepharon-ectodermal defects-cleft lip/palate (AEC) syndrome (which includes Rapp-Hodgkin syndrome). Acro-dermo-ungual-lacrimal-tooth (ADULT) syndrome. Ectrodactyly, ectodermal dysplasia, cleft lip/palate syndrome 3 (EEC3). Limb-mammary syndrome. Split-hand/foot malformation type 4 (SHFM4). Isolated cleft lip/cleft palate (orofacial cleft 8). Individuals typically have varying combinations of ectodermal dysplasia (hypohidrosis, nail dysplasia, sparse hair, tooth abnormalities), cleft lip/palate, split-hand/foot malformation/syndactyly, lacrimal duct obstruction, hypopigmentation, hypoplastic breasts and/or nipples, and hypospadias. Findings associated with a single phenotype include ankyloblepharon filiforme adnatum (tissue strands that completely or partially fuse the upper and lower eyelids), skin erosions especially on the scalp associated with areas of scarring, and alopecia, trismus, and excessive freckling. [from GeneReviews]
Yunis-Varon syndrome
Yunis-Varon syndrome (YVS) is a severe autosomal recessive disorder characterized by skeletal defects, including cleidocranial dysplasia and digital anomalies, and severe neurologic involvement with neuronal loss. Enlarged cytoplasmic vacuoles are found in neurons, muscle, and cartilage. The disorder is usually lethal in infancy (summary by Campeau et al., 2013). [from OMIM]
Ectodermal dysplasia 11B, hypohidrotic/hair/tooth type, autosomal recessive
Fontaine progeroid syndrome
SLC25A24 Fontaine progeroid syndrome is a multisystem connective tissue disorder characterized by poor growth, abnormal skeletal features, and distinctive craniofacial features with sagging, thin skin, and decreased subcutaneous fat suggesting an aged appearance that is most pronounced in infancy and improves with time. Characteristic radiographic features include turribrachycephaly with widely open anterior fontanelle, craniosynostosis, and anomalies of the terminal phalanges. Cardiovascular, genitourinary, ocular, and gastrointestinal abnormalities may also occur. To date, 13 individuals with a molecularly confirmed diagnosis of SLC25A24 Fontaine progeroid syndrome have been described. [from GeneReviews]
Barber-Say syndrome
Barber-Say syndrome (BBRSAY) is a rare congenital condition characterized by severe hypertrichosis, especially of the back, skin abnormalities such as hyperlaxity and redundancy, and facial dysmorphism, including macrostomia, eyelid deformities, ocular telecanthus, abnormal and low-set ears, bulbous nasal tip with hypoplastic alae nasi, and low frontal hairline (summary by Roche et al., 2010). [from OMIM]
Kabuki syndrome
Kabuki syndrome (KS) is characterized by typical facial features (long palpebral fissures with eversion of the lateral third of the lower eyelid; arched and broad eyebrows; short columella with depressed nasal tip; large, prominent, or cupped ears), minor skeletal anomalies, persistence of fetal fingertip pads, mild-to-moderate intellectual disability, and postnatal growth deficiency. Other findings may include: congenital heart defects, genitourinary anomalies, cleft lip and/or palate, gastrointestinal anomalies including anal atresia, ptosis and strabismus, and widely spaced teeth and hypodontia. Functional differences can include: increased susceptibility to infections and autoimmune disorders, seizures, endocrinologic abnormalities (including isolated premature thelarche in females), feeding problems, and hearing loss. [from GeneReviews]
Ectodermal dysplasia 11A, hypohidrotic/hair/tooth type, autosomal dominant
Breasts and/or nipples, aplasia or hypoplasia of, 2
Congenital aplastic deformities of the breast include amastia (total absence of breasts and nipple), athelia (absence of the nipple), and amazia (absence of the mammary gland). Most common is amastia. Bilateral absence of the breasts may occur as an isolated anomaly or may be associated with a syndrome or a cluster of other anomalies, including anhidrotic ectodermal dysplasia (305100) or Poland syndrome (173800) (summary by Papadimitriou et al., 2009). For a discussion of genetic heterogeneity of aplasia or hypoplasia of the breasts and/or nipples, see 113700. [from OMIM]
Acro-renal-mandibular syndrome
A very rare multiple congenital anomalies syndrome with characteristics of limb deficiencies and renal anomalies that include split hand-split foot malformation, renal agenesis, polycystic kidneys, uterine anomalies and severe mandibular hypoplasia. [from SNOMEDCT_US]
Choanal atresia-athelia-hypothyroidism-delayed puberty-short stature syndrome
Branchial arch abnormalities, choanal atresia, athelia, hearing loss, and hypothyroidism syndrome (BCAHH) is an autosomal dominant disorder characterized by choanal atresia, athelia or hypoplastic nipples, branchial sinus abnormalities, neck pits, lacrimal duct anomalies, hearing loss, external ear malformations, and thyroid abnormalities. Additional features may include developmental delay, impaired intellectual development, and growth failure/retardation (summary by Cuvertino et al., 2020 and Baldridge et al., 2020). [from OMIM]
Tetraamelia syndrome 2
Tetraamelia syndrome-2 (TETAMS2) is characterized by rudimentary appendages or complete absence of the limbs, usually symmetric, as well as bilateral agenesis of the lungs. There are abnormalities of the pulmonary vasculature and dysmorphic features, including bilateral cleft lip/palate, ankyloglossia, mandibular hypoplasia, microretrognathia, and labioscrotal fold aplasia (Szenker-Ravi et al., 2018). For a discussion of genetic heterogeneity of TETAMS, see 273395. [from OMIM]
Amastia, bilateral, with ureteral triplication and dysmorphism
Isolated congenital breast hypoplasia/aplasia
A rare breast malformation characterized by congenital absence of breast and nipple (amastia), or nipple or mammary gland (athelia or amazia, respectively). It can be unilateral or bilateral and may occur as an isolated malformation or be associated with a syndrome or cluster of other anomalies. [from ORDO]
Absent nipple
Congenital failure to develop, and absence of, the nipple. [from HPO]
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