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  3. Orofaciodigital syndrome 6
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Orofaciodigital syndrome 6


Title


Other Names:
Joubert syndrome with orofaciodigital defect; OFD6; Oral-facial-digital syndrome type 6; Joubert syndrome with orofaciodigital defect; OFD6; Oral-facial-digital syndrome type 6; Polydactyly - cleft lip/palate - psychomotor retardation; Váradi syndrome; Váradi-Papp syndrome; Polydactyly-cleft lip/palate-psychomotor retardation syndrome; Orofaciodigital syndrome type 6; Polydactyly cleft lip palate psychomotor retardation See More
Categories:
Congenital and Genetic Diseases; Ear, Nose, and Throat Diseases; Mouth Diseases; Congenital and Genetic Diseases; Ear, Nose, and Throat Diseases; Mouth Diseases; Musculoskeletal Diseases; Nervous System Diseases See More

Summary Summary


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The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.
orphanet

Orpha Number: 2754

Disease definition
Joubert syndrome with orofaciodigital defect (or oral-facial-digital syndrome type 6, OFD6) is a very rare subtype of Joubert syndrome and related disorders (JSRD, see this term) characterized by the neurological features of JS associated with orofacial anomalies and often polydactyly.

Epidemiology
Prevalence is unknown.

Clinical description
Typical oral findings include bifid or lobulated tongue, lingual hamartomas and multiple oral frenulae, but cleft lip and/or palate can also be present. Polydactyly is typically mesaxial with Y-shaped metacarpals, but can also be preaxial or postaxial. A subset of patients present with hypothalamic hamartoma that has never been reported in other JSRD subgroups.

Etiology
Two OFD6 patients, including one fetus, were found to carry a homozygous mutation in the TMEM216 gene (11q13.1), but mutations in this gene were excluded in several other patients, and the genetic basis of this condition still remains elusive.

Genetic counseling
Males and females are equally affected and an autosomal recessive pattern of inheritance was observed in familial cases.

Visit the Orphanet disease page for more resources.
Last updated: 7/7/2011

Symptoms Symptoms


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This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

Showing of 49 |
Medical Terms Other Names
Learn More:
HPO ID
30%-79% of people have these symptoms
Abnormal oral frenulum morphology 0000190
Ataxia 0001251
Bilateral cryptorchidism 0008689
Biparietal narrowing 0004422
Brachydactyly
Short fingers or toes
0001156
Broad nasal tip
Broad tip of nose
Broad, upturned nose
Increased breadth of nasal tip
Increased breadth of tip of nose
Increased width of nasal tip
Increased width of tip of nose
Nasal tip, broad
Nasal tip, wide
Wide tip of nose
[ more ]
0000455
Cleft palate
Cleft roof of mouth
0000175
Conductive hearing impairment
Conductive deafness
Conductive hearing loss
[ more ]
0000405
Epicanthus
Eye folds
Prominent eye folds
[ more ]
0000286
Esotropia
Inward turning cross eyed
0000565
Failure to thrive
Faltering weight
Weight faltering
[ more ]
0001508
Feeding difficulties in infancy 0008872
Finger clinodactyly 0040019
Frontal bossing 0002007
Gait disturbance
Abnormal gait
Abnormal walk
Impaired gait
[ more ]
0001288
Generalized hypotonia
Decreased muscle tone
Low muscle tone
[ more ]
0001290
Global developmental delay 0001263
Hamartoma of tongue 0011802
High palate
Elevated palate
Increased palatal height
[ more ]
0000218
Hypertelorism
Wide-set eyes
Widely spaced eyes
[ more ]
0000316
Hypoplasia of olfactory tract 0007036
Intellectual disability
Mental deficiency
Mental retardation
Mental retardation, nonspecific
Mental-retardation
[ more ]
0001249
Lobulated tongue
Bumpy tongue
0000180
Long face
Elongation of face
Increased height of face
Increased length of face
Vertical elongation of face
Vertical enlargement of face
Vertical overgrowth of face
[ more ]
0000276
Low-set, posteriorly rotated ears 0000368
Micrognathia
Little lower jaw
Small jaw
Small lower jaw
[ more ]
0000347
Molar tooth sign on MRI 0002419
Nystagmus
Involuntary, rapid, rhythmic eye movements
0000639
Preaxial polydactyly 0100258
Short stature
Decreased body height
Small stature
[ more ]
0004322
Syndactyly
Webbed fingers or toes
0001159
Tongue nodules 0000199
5%-29% of people have these symptoms
Abnormal heart morphology
Abnormality of the heart
Abnormally shaped heart
[ more ]
0001627
Abnormality of neuronal migration 0002269
Aplasia/Hypoplasia of the corpus callosum 0007370
Apnea 0002104
Central Y-shaped metacarpal
Y-shaped central long bones of hand
0006145
Cerebellar vermis hypoplasia 0001320
Episodic tachypnea 0002876
Foot polydactyly
Duplication of bones of the toes
0001829
Hand polydactyly
Extra finger
0001161
Highly arched eyebrow
Arched eyebrows
Broad, arched eyebrows
High, rounded eyebrows
High-arched eyebrows
Thick, flared eyebrows
[ more ]
0002553
Hypothalamic hamartoma 0002444
Mesoaxial polydactyly 0100260
Midline notch of upper alveolar ridge 0009084
Prominent nasal bridge
Elevated nasal bridge
High nasal bridge
Prominent bridge of nose
Prominent nasal root
Protruding bridge of nose
Protruding nasal bridge
[ more ]
0000426
Renal agenesis
Absent kidney
Missing kidney
[ more ]
0000104
Seizures
Seizure
0001250
Tremor
Tremors
0001337
Showing of 49 |
Do you have more information about symptoms of this disease? We want to hear from you.
Last updated: 2/1/2019
Do you have updated information on this disease? We want to hear from you.

Learn More Learn More


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These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

In-Depth Information

  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.

News & Events News & Events


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News

  • NIH Hosts Rare Disease Day Event, Twitter Chat
    January 24, 2019

GARD Answers GARD Answers


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Questions sent to GARD may be posted here if the information could be helpful to others. We remove all identifying information when posting a question to protect your privacy. If you do not want your question posted, please let us know.

Have a question? Contact a GARD Information Specialist.
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You can help advance rare disease research!
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