Hypohidrotic ectodermal dysplasia (HED) is a condition characterized by major involvement of ectodermal structures with perturbed formation and maturation of teeth, hair, and sweat glands. HED is caused by defective epithelial-mesenchymal interaction that involves the Ectodysplasin/Edar/Edaradd signaling pathway. Congenital anhidrotic ectodermal dysplasia is a sex-linked disorder characterized by incomplete development of the dermis, resulting in the absence of hair follicles and sweat glands with anodontia in affected males.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
20 Developmental anomalies
Multiple developmental anomalies or syndromes
LD27 Syndromes with skin or mucosal anomalies as a major feature
H00651 Hypohidrotic ectodermal dysplasia
Pathway-based classification of diseases [BR:br08402]
Signal transduction
nt06516 TNF signaling
H00651 Hypohidrotic ectodermal dysplasia
Kere J, Srivastava AK, Montonen O, Zonana J, Thomas N, Ferguson B, Munoz F, Morgan D, Clarke A, Baybayan P, Chen EY, Ezer S, Saarialho-Kere U, de la Chapelle A, Schlessinger D
Title
X-linked anhidrotic (hypohidrotic) ectodermal dysplasia is caused by mutation in a novel transmembrane protein.
van den Bogaard EHJ, van Geel M, van Vlijmen-Willems IMJJ, Jansen PAM, Peppelman M, van Erp PEJ, Atalay S, Venselaar H, Simon MEH, Joosten M, Schalkwijk J, Zeeuwen PLJM
Title
Deficiency of the human cysteine protease inhibitor cystatin M/E causes hypotrichosis and dry skin.
Tooth agenesis, or hypodontia/oligodontia, refers to the congenital absence of a few teeth without any systemic disorders. Tooth development is a complex process that involves interactions between the oral epithelium and underlying mesenchyme. Perturbation of this process results in tooth agenesis. This disease could be inherited as either an autosomal dominant, autosomal recessive, or X-linked trait.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
20 Developmental anomalies
Structural developmental anomalies primarily affecting one body system
Structural developmental anomalies of the face, mouth or teeth
LA30 Structural developmental anomalies of teeth and periodontal tissues
H00625 Tooth agenesis
Pathway-based classification of diseases [BR:br08402]
Signal transduction
nt06505 WNT signaling
H00625 Tooth agenesis
nt06507 TGFB signaling
H00625 Tooth agenesis
nt06516 TNF signaling
H00625 Tooth agenesis
Du R, Dinckan N, Song X, Coban-Akdemir Z, Jhangiani SN, Guven Y, Aktoren O, Kayserili H, Petty LE, Muzny DM, Below JE, Boerwinkle E, Wu N, Gibbs RA, Posey JE, Lupski JR, Letra A, Uyguner ZO
Title
Identification of likely pathogenic and known variants in TSPEAR, LAMB3, BCOR, and WNT10A in four Turkish families with tooth agenesis.