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Ectodermal dysplasia 13, hair/tooth type(ECTD13)

MedGen UID:
1387448
Concept ID:
C4479322
Disease or Syndrome
Synonym: ECTD13
 
Gene (location): KREMEN1 (22q12.1)
 
Monarch Initiative: MONDO:0044305
OMIM®: 617392

Definition

Some ectodermal dysplasias are here classified as congenital disorders characterized by abnormal development in 2 or more ectodermal structures (hair, nails, teeth, and sweat glands) without other systemic findings. Ectodermal dysplasia-13 of the hair/tooth type is characterized by severe oligodontia accompanied by anomalies of hair and skin (Issa et al., 2016). [from OMIM]

Clinical features

From HPO
Downslanted palpebral fissures
MedGen UID:
98391
Concept ID:
C0423110
Finding
The palpebral fissure inclination is more than two standard deviations below the mean.
Depressed nasal bridge
MedGen UID:
373112
Concept ID:
C1836542
Finding
Posterior positioning of the nasal root in relation to the overall facial profile for age.
Thick vermilion border
MedGen UID:
332232
Concept ID:
C1836543
Finding
Increased width of the skin of vermilion border region of upper lip.
Low anterior hairline
MedGen UID:
331280
Concept ID:
C1842366
Finding
Distance between the hairline (trichion) and the glabella (the most prominent point on the frontal bone above the root of the nose), in the midline, more than two SD below the mean. Alternatively, an apparently decreased distance between the hairline and the glabella.
Wide nasal bridge
MedGen UID:
341441
Concept ID:
C1849367
Finding
Increased breadth of the nasal bridge (and with it, the nasal root).
Oligodontia
MedGen UID:
904670
Concept ID:
C4082304
Congenital Abnormality
The absence of six or more teeth from the normal series by a failure to develop.
Thin eyebrow
MedGen UID:
924116
Concept ID:
C4281771
Finding
Decreased diameter of eyebrow hairs.
Ectodermal dysplasia
MedGen UID:
8544
Concept ID:
C0013575
Disease or Syndrome
Ectodermal dysplasia is a group of conditions in which there is abnormal development of the skin, hair, nails, teeth, or sweat glands.
Brittle hair
MedGen UID:
120480
Concept ID:
C0263490
Disease or Syndrome
Fragile, easily breakable hair, i.e., with reduced tensile strength.
Sparse eyelashes
MedGen UID:
375151
Concept ID:
C1843300
Finding
Decreased density/number of eyelashes.
Hypertelorism
MedGen UID:
9373
Concept ID:
C0020534
Finding
Although hypertelorism means an excessive distance between any paired organs (e.g., the nipples), the use of the word has come to be confined to ocular hypertelorism. Hypertelorism occurs as an isolated feature and is also a feature of many syndromes, e.g., Opitz G syndrome (see 300000), Greig cephalopolysyndactyly (175700), and Noonan syndrome (163950) (summary by Cohen et al., 1995).

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