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1.

Ellis-van Creveld syndrome

Ellis-van Creveld syndrome is an autosomal recessive skeletal dysplasia characterized by short limbs, short ribs, postaxial polydactyly, and dysplastic nails and teeth. Congenital cardiac defects, most commonly a defect of primary atrial septation producing a common atrium, occur in 60% of affected individuals (summary by Ruiz-Perez et al., 2000). The clinical features of the Ellis-van Creveld syndrome appear to be identical regardless of whether the disorder is caused by mutation in the EVC gene (604831) or in the EVC2 gene (607261) (Ruiz-Perez et al., 2003, Galdzicka et al., 2002). [from OMIM]

MedGen UID:
8584
Concept ID:
C0013903
Disease or Syndrome
2.

Cranioectodermal dysplasia 1

Cranioectodermal dysplasia (CED) is a ciliopathy with skeletal involvement (narrow thorax, shortened proximal limbs, syndactyly, polydactyly, brachydactyly), ectodermal features (widely spaced hypoplastic teeth, hypodontia, sparse hair, skin laxity, abnormal nails), joint laxity, growth deficiency, and characteristic facial features (frontal bossing, low-set simple ears, high forehead, telecanthus, epicanthal folds, full cheeks, everted lower lip). Most affected children develop nephronophthisis that often leads to end-stage kidney disease in infancy or childhood, a major cause of morbidity and mortality. Hepatic fibrosis and retinal dystrophy are also observed. Dolichocephaly, often secondary to sagittal craniosynostosis, is a primary manifestation that distinguishes CED from most other ciliopathies. Brain malformations and developmental delay may also occur. [from GeneReviews]

MedGen UID:
96586
Concept ID:
C0432235
Disease or Syndrome
3.

Hidrotic ectodermal dysplasia syndrome

Hidrotic ectodermal dysplasia 2, or Clouston syndrome (referred to as HED2 throughout this GeneReview) is characterized by a triad of major clinical features including partial-to-complete alopecia, nail dystrophy, and palmoplantar hyperkeratosis. Sweating is preserved and there are usually no dental anomalies. Sparse scalp hair and dysplastic nails are seen early in life. In infancy, scalp hair is fine, sparse, and brittle. Progressive hair loss may lead to total alopecia by puberty. The nails may be milky white in early childhood; they gradually become dystrophic, thick, and distally separated from the nail bed. Palmoplantar keratoderma may develop during childhood and increases in severity with age. Associated features may include cutaneous hyperpigmentation (particularly over the joints) and finger clubbing. The clinical manifestations are highly variable even within the same family. [from GeneReviews]

MedGen UID:
56416
Concept ID:
C0162361
Disease or Syndrome
4.

Cranioectodermal dysplasia 2

Cranioectodermal dysplasia (CED) is a ciliopathy with skeletal involvement (narrow thorax, shortened proximal limbs, syndactyly, polydactyly, brachydactyly), ectodermal features (widely spaced hypoplastic teeth, hypodontia, sparse hair, skin laxity, abnormal nails), joint laxity, growth deficiency, and characteristic facial features (frontal bossing, low-set simple ears, high forehead, telecanthus, epicanthal folds, full cheeks, everted lower lip). Most affected children develop nephronophthisis that often leads to end-stage kidney disease in infancy or childhood, a major cause of morbidity and mortality. Hepatic fibrosis and retinal dystrophy are also observed. Dolichocephaly, often secondary to sagittal craniosynostosis, is a primary manifestation that distinguishes CED from most other ciliopathies. Brain malformations and developmental delay may also occur. [from GeneReviews]

MedGen UID:
462224
Concept ID:
C3150874
Disease or Syndrome
5.

Ectrodactyly, ectodermal dysplasia, and cleft lip-palate syndrome 3

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]

MedGen UID:
347666
Concept ID:
C1858562
Disease or Syndrome
6.

IFAP syndrome 1, with or without BRESHECK syndrome

The IFAP/BRESHECK syndrome is an X-linked multiple congenital anomaly disorder with variable severity. The classic triad, which defines IFAP, is ichthyosis follicularis, atrichia, and photophobia. Some patients have additional features, including mental retardation, brain anomalies, Hirschsprung disease, corneal opacifications, kidney dysplasia, cryptorchidism, cleft palate, and skeletal malformations, particularly of the vertebrae, which constitutes BRESHECK syndrome (summary by Naiki et al., 2012). Genetic Heterogeneity of IFAP Syndrome IFAP syndrome-2 (IFAP2; 619016) is caused by heterozygous mutation in the SREBF1 gene (184756) on chromosome 17p11. [from OMIM]

MedGen UID:
1746744
Concept ID:
C5399971
Disease or Syndrome
7.

Cranioectodermal dysplasia 3

Cranioectodermal dysplasia (CED) is a ciliopathy with skeletal involvement (narrow thorax, shortened proximal limbs, syndactyly, polydactyly, brachydactyly), ectodermal features (widely spaced hypoplastic teeth, hypodontia, sparse hair, skin laxity, abnormal nails), joint laxity, growth deficiency, and characteristic facial features (frontal bossing, low-set simple ears, high forehead, telecanthus, epicanthal folds, full cheeks, everted lower lip). Most affected children develop nephronophthisis that often leads to end-stage kidney disease in infancy or childhood, a major cause of morbidity and mortality. Hepatic fibrosis and retinal dystrophy are also observed. Dolichocephaly, often secondary to sagittal craniosynostosis, is a primary manifestation that distinguishes CED from most other ciliopathies. Brain malformations and developmental delay may also occur. [from GeneReviews]

MedGen UID:
481437
Concept ID:
C3279807
Disease or Syndrome
8.

Ankyloblepharon-ectodermal defects-cleft lip/palate 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]

MedGen UID:
98032
Concept ID:
C0406709
Disease or Syndrome
9.

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]

MedGen UID:
400232
Concept ID:
C1863204
Disease or Syndrome
10.

Ectodermal dysplasia 10A, hypohidrotic/hair/nail type, autosomal dominant

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]

MedGen UID:
854747
Concept ID:
C3888065
Disease or Syndrome
11.

Ectodermal dysplasia and immunodeficiency 1

Ectodermal dysplasia with immunodeficiency-1 (EDAID1) is an X-linked recessive disorder that characteristically affects only males. Affected individuals have onset of recurrent severe infections due to immunodeficiency in early infancy or in the first years of life. There is increased susceptibility to bacterial, pneumococcal, mycobacterial, and fungal infections. Laboratory studies usually show dysgammaglobulinemia with low IgG subsets and normal or increased IgA and IgM, consistent with impaired 'class-switching' of B cells, although immunologic abnormalities may be subtle compared to the clinical picture, and B- and T-cell numbers are usually normal. There is a poor antibody response to polysaccharide vaccinations, particularly pneumococcus; response to other vaccinations is variable. Patients also have features of ectodermal dysplasia, including conical incisors, hypo/anhidrosis, and thin skin or hair. Severely affected individuals may also show lymphedema, osteopetrosis, and, rarely, hematologic abnormalities. The phenotype is highly variable, likely due to different hypomorphic mutations, and may be fatal in childhood. Intravenous immunoglobulins and prophylactic antibiotics are used as treatment; some patients may benefit from bone marrow transplantation. Although only males tend to be affected with immunodeficiency, many patients inherit a mutation from a mother who has mild features of IP or conical teeth (summary by Doffinger et al., 2001, Orange et al., 2004, Roberts et al., 2010, Heller et al., 2020). Genetic Heterogeneity of Ectodermal Dysplasia and Immune Deficiency Also see EDAID2 (612132), caused by mutation in the NFKBIA gene (164008). [from OMIM]

MedGen UID:
375787
Concept ID:
C1846008
Disease or Syndrome
12.

Ectodermal dysplasia 11B, hypohidrotic/hair/tooth type, autosomal recessive

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]

MedGen UID:
761671
Concept ID:
C3539920
Disease or Syndrome
13.

SchC6pf-Schulz-Passarge syndrome

Schopf-Schulz-Passarge syndrome (SSPS) is an autosomal recessive disorder characterized by a constellation of multiple eyelid cysts, hypodontia, hypotrichosis, palmoplantar hyperkeratosis, and onychodystrophy (summary by Mallaiah and Dickinson, 2001). [from OMIM]

MedGen UID:
347366
Concept ID:
C1857069
Disease or Syndrome
14.

EEM syndrome

EEM syndrome (EEMS) denotes a disorder characterized by ectodermal dysplasia, ectrodactyly, and macular dystrophy. The ectodermal dysplasia consists of hypotrichosis affecting scalp hair, eyebrows, and eyelashes, with partial anodontia. Different degrees of absence deformities as well as syndactyly have been described, the hands often being more severely affected than the feet. The retinal lesion appears as a central geographic atrophy of the retinal pigment epithelium and choriocapillary layer of the macular area with coarse hyperpigmentations and sparing of the larger choroidal vessels (summary by Kjaer et al., 2005). [from OMIM]

MedGen UID:
341679
Concept ID:
C1857041
Congenital Abnormality; Disease or Syndrome
15.

Cleft lip/palate-ectodermal dysplasia syndrome

Zlotogora-Ogur syndrome is an ectodermal dysplasia syndrome with characteristics of hair, skin and teeth anomalies, facial dysmorphism with cleft lip and palate, cutaneous syndactyly and, in some cases, intellectual disability.The prevalence is unknown but to date, less than 50 cases have been described in the literature. Caused by mutations in the gene PVRL1 (11q23-q24) which encodes nectin-1, the principal receptor used by alpha-herpesviruses to mediate entry into human cells. Transmission is autosomal recessive. [from SNOMEDCT_US]

MedGen UID:
444067
Concept ID:
C2931488
Disease or Syndrome
16.

Ectrodactyly, ectodermal dysplasia, and cleft lip-palate syndrome 1

An EEC syndrome characterized by autosomal dominant inheritance that has material basis in variation in the chromosome region 7q11.2-q21.3. [from MONDO]

MedGen UID:
343663
Concept ID:
C1851841
Disease or Syndrome
17.

Combined immunodeficiency due to ORAI1 deficiency

Immunodeficiency-9 (IMD9) is an autosomal recessive disorder characterized by early onset of recurrent infections due to defective T-cell activation. Affected individuals also have congenital myopathy resulting in muscle weakness as well as features of ectodermal dysplasia, including soft dental enamel (summary by McCarl et al., 2009). [from OMIM]

MedGen UID:
440578
Concept ID:
C2748568
Disease or Syndrome
18.

Epidermolysis bullosa simplex due to plakophilin deficiency

Ectodermal dysplasia/skin fragility syndrome (EDSFS) is an autosomal recessive genodermatosis characterized by widespread skin fragility, alopecia, nail dystrophy, and focal keratoderma with painful fissures. Hypohidrosis and cheilitis are sometimes present (summary by Ersoy-Evans et al., 2006). [from OMIM]

MedGen UID:
388032
Concept ID:
C1858302
Disease or Syndrome
19.

Basan syndrome

Complete congenital absence of dermatoglyphs is a rare syndrome characterized by autosomal dominant inheritance of the lack of ridges on palms and soles, neonatal acral blisters and facial milia, adult traumatic blistering and fissuring, absent or reduced sweating of palms and soles, and contracture of digits. Additional features may include single palmar transverse crease, palmoplantar keratoderma, and nail grooving (summary by Limova et al., 1993). [from OMIM]

MedGen UID:
140808
Concept ID:
C0406707
Disease or Syndrome
20.

Corneal intraepithelial dyskeratosis-palmoplantar hyperkeratosis-laryngeal dyskeratosis syndrome

Multiple self-healing palmoplantar carcinoma (MSPC) is characterized by recurrent keratoacanthomas in palmoplantar skin as well as in conjunctival and corneal epithelia. In addition, patients experience a high susceptibility to malignant squamous cell carcinoma (summary by Zhong et al., 2016). [from OMIM]

MedGen UID:
815206
Concept ID:
C3808876
Neoplastic Process
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