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Barber-Say syndrome(BBRSAY)

MedGen UID:
230818
Concept ID:
C1319466
Disease or Syndrome
Synonyms: BBRSAY; Hypertrichosis, atrophic skin, ectropion, and macrostomia
SNOMED CT: Barber-Say syndrome (408537003)
Modes of inheritance:
Autosomal recessive inheritance
MedGen UID:
141025
Concept ID:
C0441748
Intellectual Product
Source: Orphanet
A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in individuals with two pathogenic alleles, either homozygotes (two copies of the same mutant allele) or compound heterozygotes (whereby each copy of a gene has a distinct mutant allele).
Autosomal dominant inheritance
MedGen UID:
141047
Concept ID:
C0443147
Intellectual Product
Source: Orphanet
A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in heterozygotes. In the context of medical genetics, an autosomal dominant disorder is caused when a single copy of the mutant allele is present. Males and females are affected equally, and can both transmit the disorder with a risk of 50% for each child of inheriting the mutant allele.
Not genetically inherited
MedGen UID:
988794
Concept ID:
CN307044
Finding
Source: Orphanet
clinical entity without genetic inheritance.
 
Gene (location): TWIST2 (2q37.3)
 
Monarch Initiative: MONDO:0008853
OMIM®: 209885
Orphanet: ORPHA1231

Definition

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]

Clinical features

From HPO
Cryptorchidism
MedGen UID:
8192
Concept ID:
C0010417
Congenital Abnormality
Cryptorchidism, or failure of testicular descent, is a common human congenital abnormality with a multifactorial etiology that likely reflects the involvement of endocrine, environmental, and hereditary factors. Cryptorchidism can result in infertility and increases risk for testicular tumors. Testicular descent from abdomen to scrotum occurs in 2 distinct phases: the transabdominal phase and the inguinoscrotal phase (summary by Gorlov et al., 2002).
Hypoplastic labia majora
MedGen UID:
107566
Concept ID:
C0566899
Finding
Undergrowth of the outer labia.
Hypoplastic labia minora
MedGen UID:
376558
Concept ID:
C1849295
Finding
Clubfoot
MedGen UID:
3130
Concept ID:
C0009081
Congenital Abnormality
Clubfoot is a congenital limb deformity defined as fixation of the foot in cavus, adductus, varus, and equinus (i.e., inclined inwards, axially rotated outwards, and pointing downwards) with concomitant soft tissue abnormalities (Cardy et al., 2007). Clubfoot may occur in isolation or as part of a syndrome (e.g., diastrophic dysplasia, 222600). Clubfoot has been reported with deficiency of long bones and mirror-image polydactyly (Gurnett et al., 2008; Klopocki et al., 2012).
Brachydactyly
MedGen UID:
67454
Concept ID:
C0221357
Congenital Abnormality
Digits that appear disproportionately short compared to the hand/foot. The word brachydactyly is used here to describe a series distinct patterns of shortened digits (brachydactyly types A-E). This is the sense used here.
Clinodactyly of the 5th finger
MedGen UID:
340456
Concept ID:
C1850049
Congenital Abnormality
Clinodactyly refers to a bending or curvature of the fifth finger in the radial direction (i.e., towards the 4th finger).
Low-set ears
MedGen UID:
65980
Concept ID:
C0239234
Congenital Abnormality
Upper insertion of the ear to the scalp below an imaginary horizontal line drawn between the inner canthi of the eye and extending posteriorly to the ear.
Stenosis of the external auditory canal
MedGen UID:
140758
Concept ID:
C0395837
Finding
An abnormal narrowing of the external auditory canal.
Hearing impairment
MedGen UID:
235586
Concept ID:
C1384666
Disease or Syndrome
A decreased magnitude of the sensory perception of sound.
Extra concha fold
MedGen UID:
866569
Concept ID:
C4020915
Anatomical Abnormality
Folds or ridges within the concha that are distinct from the crus helix.
Microtia, first degree
MedGen UID:
866821
Concept ID:
C4021175
Anatomical Abnormality
Presence of all the normal ear components and the median longitudinal length more than two standard deviations below the mean.
Delayed speech and language development
MedGen UID:
105318
Concept ID:
C0454644
Finding
A degree of language development that is significantly below the norm for a child of a specified age.
Intellectual disability
MedGen UID:
811461
Concept ID:
C3714756
Mental or Behavioral Dysfunction
Intellectual disability, previously referred to as mental retardation, is characterized by subnormal intellectual functioning that occurs during the developmental period. It is defined by an IQ score below 70.
Lipodystrophy
MedGen UID:
6111
Concept ID:
C0023787
Disease or Syndrome
Degenerative changes of the fat tissue.
Micrognathia
MedGen UID:
44428
Concept ID:
C0025990
Congenital Abnormality
Developmental hypoplasia of the mandible.
Hypoplasia of the maxilla
MedGen UID:
66804
Concept ID:
C0240310
Congenital Abnormality
Abnormally small dimension of the Maxilla. Usually creating a malocclusion or malalignment between the upper and lower teeth or resulting in a deficient amount of projection of the base of the nose and lower midface region.
Ectropion
MedGen UID:
4448
Concept ID:
C0013592
Disease or Syndrome
An outward turning (eversion) or rotation of the eyelid margin.
Partial congenital absence of teeth
MedGen UID:
43794
Concept ID:
C0020608
Congenital Abnormality
Tooth agenesis in some form is a common human anomaly that affects approximately 20% of the population. Although tooth agenesis is associated with numerous syndromes, several case reports describe nonsyndromic forms that are either sporadic or familial in nature, as reviewed by Gorlin et al. (1990). The incidence of familial tooth agenesis varies with each class of teeth. Most commonly affected are third molars (wisdom teeth), followed by either upper lateral incisors or lower second premolars; agenesis involving first and second molars is very rare. Also see 114600 and 302400. Selective tooth agenesis without associated systemic disorders has sometimes been divided into 2 types: oligodontia, defined as agenesis of 6 or more permanent teeth, and hypodontia, defined as agenesis of less than 6 teeth. The number in both cases does not include absence of third molars (wisdom teeth). Faulty use of the terms, however, have confounded their use. The term 'partial anodontia' is obsolete (Salinas, 1978). Genetic Heterogeneity of Selective Tooth Agenesis Other forms of selective tooth agenesis include STHAG2 (602639), mapped to chromosome 16q12; STHAG3 (604625), caused by mutation in the PAX9 gene (167416) on chromosome 14q12; STHAG4 (150400), caused by mutation in the WNT10A gene (606268) on chromosome 2q35; STHAG5 (610926), mapped to chromosome 10q11; STHAG7 (616724), caused by mutation in the LRP6 gene (603507) on chromosome 12p13; STHAG8 (617073), caused by mutation in the WNT10B gene (601906) on chromosome 12q13; STHAG9 (617275), caused by mutation in the GREM2 gene (608832) on chromosome 1q43; STHAG10 (620173), caused by mutation in the TSPEAR gene (612920) on chromosome 21q22; and STHAGX1 (313500), caused by mutation in the EDA gene (300451) on chromosome Xq13. A type of selective tooth agenesis that was formerly designated STHAG6 has been incorporated into the dental anomalies and short stature syndrome (DASS; 601216). Of 34 unrelated patients with nonsyndromic tooth agenesis, van den Boogaard et al. (2012) found that 56% (19 patients) had mutations in the WNT10A gene (STHAG4), whereas only 3% and 9% had mutations in the MSX1 (STHAG1) and PAX9 (STHAG3) genes, respectively. The authors concluded that WNT10A is a major gene in the etiology of isolated hypodontia. Genotype-Phenotype Correlations Yu et al. (2016) observed that the most frequently missing permanent teeth in WNT10B-associated oligodontia were the lateral incisors (83.3%), whereas premolars were missing only 51.4% of the time, which they noted was a pattern 'clearly different' from the oligodontia patterns resulting from WNT10A mutations. They also stated that the selective pattern in WNT10B mutants was different from that associated with mutations in other genes, such as MSX1, in which second premolars are missing, and PAX9, in which there is agenesis of molars.
Wide mouth
MedGen UID:
44238
Concept ID:
C0024433
Congenital Abnormality
Distance between the oral commissures more than 2 SD above the mean. Alternatively, an apparently increased width of the oral aperture (subjective).
Dental malocclusion
MedGen UID:
9869
Concept ID:
C0024636
Anatomical Abnormality
Dental malocclusion refers to an abnormality of the occlusion, or alignment, of the teeth and the way the upper and lower teeth fit together, resulting in overcrowding of teeth or in abnormal bite patterns.
Velopharyngeal insufficiency
MedGen UID:
52992
Concept ID:
C0042454
Finding
Inability of velopharyngeal sphincter to sufficiently separate the nasal cavity from the oral cavity during speech.
Delayed eruption of teeth
MedGen UID:
68678
Concept ID:
C0239174
Finding
Delayed tooth eruption, which can be defined as tooth eruption more than 2 SD beyond the mean eruption age.
Bulbous nose
MedGen UID:
66013
Concept ID:
C0240543
Finding
Increased volume and globular shape of the anteroinferior aspect of the nose.
High palate
MedGen UID:
66814
Concept ID:
C0240635
Congenital Abnormality
Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective).
Epiblepharon
MedGen UID:
488856
Concept ID:
C0344503
Congenital Abnormality
Redundant eyelid skin pressing the eyelashes against the cornea and/or conjunctiva.
Gingival overgrowth
MedGen UID:
87712
Concept ID:
C0376480
Finding
Hyperplasia of the gingiva (that is, a thickening of the soft tissue overlying the alveolar ridge. The degree of thickening ranges from involvement of the interdental papillae alone to gingival overgrowth covering the entire tooth crown.
Mandibular prognathia
MedGen UID:
98316
Concept ID:
C0399526
Finding
Abnormal prominence of the chin related to increased length of the mandible.
Telecanthus
MedGen UID:
140836
Concept ID:
C0423113
Finding
Distance between the inner canthi more than two standard deviations above the mean (objective); or, apparently increased distance between the inner canthi.
Wide nose
MedGen UID:
140869
Concept ID:
C0426421
Finding
Interalar distance more than two standard deviations above the mean for age, i.e., an apparently increased width of the nasal base and alae.
Thin vermilion border
MedGen UID:
108294
Concept ID:
C0578038
Finding
Height of the vermilion of the medial part of the lip more than 2 SD below the mean, or apparently reduced height of the vermilion of the lip in the frontal view. The vermilion is the red part of the lips (and confusingly, the vermilion itself is also often referred to as being equivalent the lips).
Sparse eyebrow
MedGen UID:
371332
Concept ID:
C1832446
Finding
Decreased density/number of eyebrow hairs.
Underdeveloped nasal alae
MedGen UID:
322332
Concept ID:
C1834055
Congenital Abnormality
Thinned, deficient, or excessively arched ala nasi.
Anteverted nares
MedGen UID:
326648
Concept ID:
C1840077
Finding
Anteriorly-facing nostrils viewed with the head in the Frankfurt horizontal and the eyes of the observer level with the eyes of the subject. This gives the appearance of an upturned nose (upturned nasal tip).
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.
Widely spaced teeth
MedGen UID:
337093
Concept ID:
C1844813
Finding
Increased spaces (diastemata) between most of the teeth in the same dental arch.
Hypertrichosis
MedGen UID:
43787
Concept ID:
C0020555
Disease or Syndrome
Hypertrichosis is increased hair growth that is abnormal in quantity or location.
Premature skin wrinkling
MedGen UID:
19996
Concept ID:
C0037301
Finding
The presence of an increased degree of wrinkling (irregular folds and indentations) of the skin as compared with age-related norms.
Dermal atrophy
MedGen UID:
101793
Concept ID:
C0151514
Disease or Syndrome
Partial or complete wasting (atrophy) of the skin.
Dry skin
MedGen UID:
56250
Concept ID:
C0151908
Sign or Symptom
Skin characterized by the lack of natural or normal moisture.
Redundant skin
MedGen UID:
154379
Concept ID:
C0581342
Pathologic Function
Loose and sagging skin often associated with loss of skin elasticity.
Dermal translucency
MedGen UID:
373141
Concept ID:
C1836646
Finding
An abnormally increased ability of the skin to permit light to pass through (translucency) such that subcutaneous structures such as veins display an increased degree of visibility.
Sparse eyelashes
MedGen UID:
375151
Concept ID:
C1843300
Finding
Decreased density/number of eyelashes.
Prominent digit pad
MedGen UID:
869007
Concept ID:
C4023424
Anatomical Abnormality
A soft tissue prominence of the ventral aspects of the fingertips or toe tips.
Absent nipple
MedGen UID:
64223
Concept ID:
C0175755
Congenital Abnormality
Congenital failure to develop, and absence of, the nipple.
Inversion of nipple
MedGen UID:
82844
Concept ID:
C0269269
Anatomical Abnormality
The presence of nipples that instead of pointing outward are retracted inwards.
Hypoplastic nipples
MedGen UID:
98156
Concept ID:
C0432355
Congenital Abnormality
Underdevelopment of the nipple.
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).

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • CROGVBarber-Say syndrome
Follow this link to review classifications for Barber-Say syndrome in Orphanet.

Recent clinical studies

Etiology

Takenouchi T, Sakamoto Y, Sato H, Suzuki H, Uehara T, Ohsone Y, Kosaki K
Am J Med Genet A 2018 Dec;176(12):2777-2780. Epub 2018 Nov 18 doi: 10.1002/ajmg.a.40525. PMID: 30450715
Stevens CA, Sargent LA
Am J Med Genet 2002 Jan 1;107(1):30-7. doi: 10.1002/ajmg.10123. PMID: 11807864

Diagnosis

Barreiro-González A, Barranco-González H, Aviñó-Martínez J, López Blanco E, Gutiérrez Ontalvilla P, Évole-Buselli M
Arch Soc Esp Oftalmol (Engl Ed) 2019 Apr;94(4):196-199. Epub 2018 Nov 16 doi: 10.1016/j.oftal.2018.09.009. PMID: 30455119
Takenouchi T, Sakamoto Y, Sato H, Suzuki H, Uehara T, Ohsone Y, Kosaki K
Am J Med Genet A 2018 Dec;176(12):2777-2780. Epub 2018 Nov 18 doi: 10.1002/ajmg.a.40525. PMID: 30450715
Zuazo F, Astiazaran MC, Rodríguez-Cabrera L, Garcia-Regil P, Chacon-Camacho O, Tovilla-Canales JL, Zenteno JC
Ophthalmic Plast Reconstr Surg 2018 Mar/Apr;34(2):e61-e63. doi: 10.1097/IOP.0000000000001036. PMID: 29329175
De Maria B, Mazzanti L, Roche N, Hennekam RC
Am J Med Genet A 2016 Aug;170(8):1989-2001. Epub 2016 May 19 doi: 10.1002/ajmg.a.37757. PMID: 27196381
Martins F, Ortega KL, Hiraoka C, Ricardo P, Magalhães M
Am J Med Genet A 2010 Oct;152A(10):2569-73. doi: 10.1002/ajmg.a.32898. PMID: 20830793

Prognosis

Stevens CA, Sargent LA
Am J Med Genet 2002 Jan 1;107(1):30-7. doi: 10.1002/ajmg.10123. PMID: 11807864

Clinical prediction guides

Takenouchi T, Sakamoto Y, Sato H, Suzuki H, Uehara T, Ohsone Y, Kosaki K
Am J Med Genet A 2018 Dec;176(12):2777-2780. Epub 2018 Nov 18 doi: 10.1002/ajmg.a.40525. PMID: 30450715
Marchegiani S, Davis T, Tessadori F, van Haaften G, Brancati F, Hoischen A, Huang H, Valkanas E, Pusey B, Schanze D, Venselaar H, Vulto-van Silfhout AT, Wolfe LA, Tifft CJ, Zerfas PM, Zambruno G, Kariminejad A, Sabbagh-Kermani F, Lee J, Tsokos MG, Lee CC, Ferraz V, da Silva EM, Stevens CA, Roche N, Bartsch O, Farndon P, Bermejo-Sanchez E, Brooks BP, Maduro V, Dallapiccola B, Ramos FJ, Chung HY, Le Caignec C, Martins F, Jacyk WK, Mazzanti L, Brunner HG, Bakkers J, Lin S, Malicdan MC, Boerkoel CF, Gahl WA, de Vries BB, van Haelst MM, Zenker M, Markello TC
Am J Hum Genet 2015 Jul 2;97(1):99-110. Epub 2015 Jun 25 doi: 10.1016/j.ajhg.2015.05.017. PMID: 26119818Free PMC Article

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