{"Name":"Riboflavin transporter deficiency","DiseaseID__c":"GARD:0009993","id":9993,"encodedName":"riboflavin-transporter-deficiency","IsDeleted":false,"Disease_Name_Full__c":"Riboflavin transporter deficiency","Xref_IDs__c":"699866005; C4551777; C537111; DOID:0050694; MEDGEN:1634394; MONDO:0008891; NBK299312; OMIMPS:211530; ORPHA:97229","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":7,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":1,"No_of_HHS_records__c":1,"World_Estimate__c":"1 to 8,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":3,"No_of_Disease_Descriptions__c":4,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":4,"Description_Source__c":"MONDO:0008891","Disease_Description__c":"A rare, genetic motor neuron disease characterized by a peripheral and cranial neuropathy, neuronal loss in anterior horns and atrophy of spinal sensory tracts, causing muscle weakness, sensory loss, diaphragmatic paralysis and respiratory insufficiency, and multiple cranial nerve deficits such as sensorineural hearing loss, bulbar symptoms, and loss of vision due to optic atrophy. Depending on the transporter affected, Riboflavin transporter deficiency 2 (RFVT2) and Riboflavin transporter deficiency 3 (RFVT3) are distinguished.","GARD_Name__c":"Riboflavin transporter deficiency","GARD_Synonym__c":"brown-vialetto-van laere syndrome; disorder of riboflavin transmembrane transporter activity; fazio-londe syndrome; pontobulbar palsy with deafness; progressive bulbar palsy with sensorineural deafness; riboflavin transmembrane transporter activity disease; sensorineural hearing loss-pontobulbar palsy syndrome","Curated_Disease_Description_Source__c":"GARD:0009993","Curated_Disease_Description__c":"Riboflavin transporter deficiency neuronopathy is a disorder that affects nerve cells (neurons). Affected individuals typically have hearing loss caused by nerve damage in the inner ear (sensorineural hearing loss) and signs of damage to other nerves. In addition to nerves in the inner ear, riboflavin transporter deficiency neuronopathy involves nerves found in the part of the brain that is connected to the spinal cord (the brainstem), specifically in a region of the brainstem known as the pontobulbar region. Damage to these nerves causes paralysis of the muscles controlled by them, a condition called pontobulbar palsy. Nerves in the pontobulbar region help control several voluntary muscle activities, including breathing, speaking, and moving the limbs. As a result of pontobulbar palsy, people with riboflavin transporter deficiency neuronopathy can have breathing problems; slurred speech; and muscle weakness in the face, neck, shoulders, and limbs. Affected individuals can also have muscle stiffness (spasticity) and exaggerated reflexes. The age at which riboflavin transporter deficiency neuronopathy begins varies from infancy to young adulthood. When the condition begins in infancy, the first symptom is often breathing problems caused by nerve damage, which can be life-threatening. When the condition begins in children or young adults, sensorineural hearing loss usually occurs first, followed by signs of pontobulbar palsy. If not treated, the signs and symptoms of riboflavin transporter deficiency neuronopathy worsen over time. Severe breathing problems and respiratory infections are the usual cause of death in people with this condition. Without treatment, affected infants typically survive less than one year. However, those who develop the condition after age 4 often survive more than 10 years. Riboflavin transporter deficiency neuronopathy encompasses two conditions that were once considered distinct disorders: Brown-Vialetto-Van Laere syndrome (BVVLS) and Fazio-Londe disease. The two conditions have similar signs and symptoms, but Fazio-Londe disease does not include sensorineural hearing loss. Because these two conditions share a genetic cause and have overlapping features, researchers determined that they are forms of a single disorder.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"at a variety of ages","SourceID__c":"ORPHA:97229","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0008891","ORPHANET_ID__c":"ORPHA:97229","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Deficiencia del transportador de riboflavina","Spanish_Description_Source__c":"ORPHA:97229","Spanish_Description__c":"Es una enfermedad de la motoneurona de origen genético, poco frecuente caracterizada por una neuropatía periférica y craneal, pérdida neuronal en las astas anteriores y atrofia de los tractos sensitivos espinales, que resulta en debilidad muscular, déficit sensitivo, parálisis diafragmática e insuficiencia respiratoria y en múltiples alteraciones de los pares craneales tales como pérdida auditiva neurosensorial, síntomas bulbares y pérdida de la visión por atrofia óptica. Según el transportador afectado, se distingue entre la deficiencia del transportador de riboflavina 2 (RFVT2) y la deficiencia del transportador de riboflavina 3 (RFVT3).","Spanish_Disease_Name__c":"deficiencia del transportador de riboflavina","Spanish_GARD_Synonym__c":"síndrome de brown-vialetto-van laere","Category_Linearization__c":"ORPHA:98006","icd10_id__c":null,"mesh_id__c":null,"omim_id__c":null,"snomed_id__c":null,"umls_id__c":null,"GARD_Disease__c":[{"Curated_Disease_Description__c":"Riboflavin transporter deficiency neuronopathy is a disorder that affects nerve cells (neurons). Affected individuals typically have hearing loss caused by nerve damage in the inner ear (sensorineural hearing loss) and signs of damage to other nerves. In addition to nerves in the inner ear, riboflavin transporter deficiency neuronopathy involves nerves found in the part of the brain that is connected to the spinal cord (the brainstem), specifically in a region of the brainstem known as the pontobulbar region. Damage to these nerves causes paralysis of the muscles controlled by them, a condition called pontobulbar palsy. Nerves in the pontobulbar region help control several voluntary muscle activities, including breathing, speaking, and moving the limbs. As a result of pontobulbar palsy, people with riboflavin transporter deficiency neuronopathy can have breathing problems; slurred speech; and muscle weakness in the face, neck, shoulders, and limbs. Affected individuals can also have muscle stiffness (spasticity) and exaggerated reflexes. The age at which riboflavin transporter deficiency neuronopathy begins varies from infancy to young adulthood. When the condition begins in infancy, the first symptom is often breathing problems caused by nerve damage, which can be life-threatening. When the condition begins in children or young adults, sensorineural hearing loss usually occurs first, followed by signs of pontobulbar palsy. If not treated, the signs and symptoms of riboflavin transporter deficiency neuronopathy worsen over time. Severe breathing problems and respiratory infections are the usual cause of death in people with this condition. Without treatment, affected infants typically survive less than one year. However, those who develop the condition after age 4 often survive more than 10 years. Riboflavin transporter deficiency neuronopathy encompasses two conditions that were once considered distinct disorders: Brown-Vialetto-Van Laere syndrome (BVVLS) and Fazio-Londe disease. The two conditions have similar signs and symptoms, but Fazio-Londe disease does not include sensorineural hearing loss. Because these two conditions share a genetic cause and have overlapping features, researchers determined that they are forms of a single disorder.","Curated_Disease_Description_Source__c":"GARD:0009993","GARD_Synonym__c":"brown-vialetto-van laere syndrome; disorder of riboflavin transmembrane transporter activity; fazio-londe syndrome; pontobulbar palsy with deafness; progressive bulbar palsy with sensorineural deafness; riboflavin transmembrane transporter activity disease; sensorineural hearing loss-pontobulbar palsy syndrome","Name":"Riboflavin transporter deficiency","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Facial Palsy UK","Website__c":"https://www.facialpalsy.org.uk/"},{"Account_Name__c":"Alianza Iberoamericana de Enfermedades Raras o Poco Frecuentes","Website__c":"https://aliber.org/web/"},{"Account_Name__c":"Federación Mexicana de Enfermedades Raras (FEMEXER)","Website__c":"http://www.femexer.org/"},{"Account_Name__c":"Federación Española de Enfermedades Raras","Website__c":"https://enfermedades-raras.org/"},{"Account_Name__c":"Federación Colombiana de Enfermedades Raras","Website__c":"http://www.fecoer.org"},{"Account_Name__c":"Federación Argentina de Enfermedades Poco Frecuentes","Website__c":"https://fadepof.org.ar/"},{"Account_Name__c":"Asociación Todos Unidos Enfermedades Raras Uruguay","Website__c":"https://atueru.org.uy/"},{"Account_Name__c":"RTD International","Website__c":"https://www.rtdinternational.org/"},{"Account_Name__c":"Thisbe & Noah","Website__c":"https://thisbeandnoah.org/"},{"Account_Name__c":"Cure RTD Foundation","Website__c":"https://curertd.org/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Genetics","Tag_Category__c":"Cause;Disease Category;Specialist","category_description":"Genetic diseases affect the DNA, or genetic instructions, which directs how tissues, organs, and body systems function.","curated_tag_name":"Genetic diseases"},{"Tag_Name__c":"Neurology","Tag_Category__c":"Disease Category;Specialist","category_description":"Neurological diseases affect the brain, spinal cord, cranial nerves, autonomic nerves, or other peripheral nerves.","curated_tag_name":"Neurological diseases"},{"Tag_Name__c":"Ophthalmology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Congenital Abnormality","Tag_Category__c":"Disease Category","category_description":"Birth defects are structural changes present at birth that can affect almost any part of the body, including how the body looks, works, or both.","curated_tag_name":"Birth defects"},{"Tag_Name__c":"Otolaryngology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Neuro-Ophthalmology","Tag_Category__c":"Specialist","curated_tag_name":"Neuro-ophthalmic diseases"},{"Tag_Name__c":"Neuromuscular medicine","Tag_Category__c":"Specialist","curated_tag_name":"Neuromuscular medicine"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Adult","Provided_By__c":"ORPHA:97229"},{"Age_At_Onset__c":"Childhood","Provided_By__c":"ORPHA:97229"},{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:97229"},{"Age_At_Onset__c":"Adolescent","Provided_By__c":"ORPHA:97229"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C0796274"},{"Type__c":"GTR","Curie__c":"MEDGEN:CN029849"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK299312","Source__c":"Gene Review","Xref__c":"NBK299312"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=699866005","Source__c":"C4551777; MONDO:0008891","Xref__c":"699866005"},{"URL__c":"https://www.omim.org/phenotypicSeries/PS211530","Source__c":"MONDO:0008891","Xref__c":"OMIMPS:211530"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4551777","Source__c":"C4551777","Xref__c":"C4551777"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0050694","Source__c":"MONDO:0008891","Xref__c":"DOID:0050694"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C537111","Source__c":"MONDO:0008891","Xref__c":"C537111"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1634394","Source__c":"C4551777","Xref__c":"MEDGEN:1634394"},{"URL__c":"https://www.orpha.net/en/disease/detail/97229","Source__c":"C4551777; MONDO:0008891; ORPHA:97229","Xref__c":"ORPHA:97229"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0008891","Source__c":"GARD:0009993","Xref__c":"MONDO:0008891"},{"URL__c":"https://medlineplus.gov/genetics/condition/riboflavin-transporter-deficiency-neuronopathy","Source__c":"GARD:0009993","Xref__c":"https://medlineplus.gov/genetics/condition/riboflavin-transporter-deficiency-neuronopathy"}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Severe weight loss, wasting of muscle, loss of appetite, and general debility related to a chronic disease.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004326","HPO_Synonym__c":"Wasting syndrome","HPO_Name__c":"Cachexia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A decreased functionality of the gonad.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000135","HPO_Synonym__c":"Decreased activity of gonads","HPO_Name__c":"Hypogonadism","Feature_System__c":"Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The upper eyelid margin is positioned 3 mm or more lower than usual and covers the superior portion of the iris (objective); or, the upper lid margin obscures at least part of the pupil (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000508","HPO_Synonym__c":"Blepharoptosis; Drooping upper eyelid; Eyelid ptosis; Palpebral ptosis","HPO_Name__c":"Ptosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Any deviation from the normal, uniform distribution or appearance of pigment within the macular region of the retina.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008002","HPO_Synonym__c":"Abnormality of macular pigmentation","HPO_Name__c":"Abnormal macular pigmentation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality in voluntary or involuntary eye movements or their control.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000496","HPO_Synonym__c":"Abnormal extraocular movement; Abnormal extraocular movements; Abnormal eye motility; Abnormal eye movement; Abnormal eye movements; Abnormal motility of the globe of the eye; Abnormal movement of the globe of the eye; Abnormal ocular movements; Abnormality of eye movement; Eye movement abnormalities; Eye movement issue; Ocular movement abnormalities; Oculomotor abnormalities","HPO_Name__c":"Abnormality of eye movement","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006824","HPO_Synonym__c":"Cranial nerve palsies; Cranial nerve palsy; Cranial nerve paresis","HPO_Name__c":"Cranial nerve paralysis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An intermittent cessation of airflow at the mouth and nose during sleep is known as sleep apnea. Apneas that last at least 10 seconds are considered significant, but individuals with sleep apnea may experience apneas lasting from 20 seconds up to 2 or 3 minutes. Patients may have up to 15 events per hour of sleep.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010535","HPO_Synonym__c":"Pauses in breathing while sleeping; Sleep apnea; Sleep apnoea","HPO_Name__c":"Sleep apnea","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The term intellectual disability or intellectual developmental disorder is used to describe significantly sub-average intellectual and adaptive functioning based on clinical assessment and as measured by individually administered, appropriately normed, standardized and validated tests of intellectual functioning and adaptive behavior, with onset during the developmental period from infancy through adolescence.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001249","HPO_Synonym__c":"Intellectual disability; Mental deficiency; Mental retardation; Mental retardation, nonspecific; Mental-retardation; Nonprogressive intellectual disability; Nonprogressive mental retardation","HPO_Name__c":"Intellectual disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The presence of chronic increased pressure in the systemic arterial system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000822","HPO_Synonym__c":"Arterial hypertension; Systemic hypertension","HPO_Name__c":"Hypertension","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An anomaly in the ability to discriminate between or recognize colors.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000551","HPO_Synonym__c":"Abnormal color vision; Abnormality of color vision; Disturbed color vision","HPO_Name__c":"Color vision defect","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Difficulty in swallowing.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002015","HPO_Synonym__c":"Difficulty swallowing; Poor swallowing; Swallowing difficulties; Swallowing difficulty","HPO_Name__c":"Dysphagia","Feature_System__c":"Nervous System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A functional abnormality of the autonomic nervous system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012332","HPO_Synonym__c":"Autonomic dysfunction; Autonomic dysregulation; Dysautonomia","HPO_Name__c":"Abnormal autonomic nervous system physiology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Ataxia refers to impaired coordination of voluntary muscle movement. Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001251","HPO_Synonym__c":"Cerebellar ataxia","HPO_Name__c":"Ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal development of large mammary glands in males resulting in breast enlargement.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000771","HPO_Synonym__c":"Enlarged male breast; Gynaecomastia","HPO_Name__c":"Gynecomastia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Facial nerve palsy is a dysfunction of cranial nerve VII (the facial nerve) that results in inability to control facial muscles on the affected side with weakness of the muscles of facial expression and eye closure. This can either be present in unilateral or bilateral form.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010628","HPO_Synonym__c":"Bell's palsy; Cranial nerve VII palsy; Facial nerve palsy; Facial nerve paralysis; Facial palsy, unilateral or bilateral; Seventh cranial nerve palsy; VII th cranial nerve palsy","HPO_Name__c":"Facial palsy","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A pale yellow discoloration of the optic disc (the area of the optic nerve head in the retina). The optic disc normally has a pinkish hue with a central yellowish depression.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000543","HPO_Synonym__c":"Pale optic disc","HPO_Name__c":"Optic disc pallor","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A progressive form of hearing impairment.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001730","HPO_Synonym__c":"Progressive hearing loss","HPO_Name__c":"Progressive hearing impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Perceptions in a conscious and awake state that, in the absence of external stimuli, have qualities of real perception. These perceptions are vivid, substantial, and located in external objective space.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000738","HPO_Synonym__c":"Hallucination; Hallucinations; Sensory hallucination","HPO_Name__c":"Hallucinations","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Very brief, involuntary random muscular contractions occurring at rest, in response to sensory stimuli, or accompanying voluntary movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001336","HPO_Synonym__c":"Myoclonic jerks","HPO_Name__c":"Myoclonus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Atrophy of the cortex of the cerebrum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002120","HPO_Synonym__c":"Cerebral cortex atrophy; Cortical atrophy; Decrease in size of the outer layer of the brain due to loss of brain cells","HPO_Name__c":"Cerebral cortical atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Behavior or an act aimed at harming a person, animal, or physical property (e.g., acts of physical violence; shouting, swearing, and using harsh language; slashing someone's tires).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000718","HPO_Synonym__c":"Aggression; Aggressive behavior; Aggressiveness","HPO_Name__c":"Aggressive behavior","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormal reduction in the amount of pigmentation of the iris.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007730","HPO_Synonym__c":"Light eye color; Reduced iris pigmentation","HPO_Name__c":"Iris hypopigmentation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduction of neurologic reflexes such as the knee-jerk reaction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001265","HPO_Synonym__c":"Decreased reflex response; Decreased reflexes","HPO_Name__c":"Hyporeflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Dysarthric speech is a general description referring to a neurological speech disorder characterized by poor articulation. Depending on the involved neurological structures, dysarthria may be further classified as spastic, flaccid, ataxic, hyperkinetic and hypokinetic, or mixed.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001260","HPO_Synonym__c":"Difficulty articulating speech; Dysarthric speech","HPO_Name__c":"Dysarthria","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001250","HPO_Synonym__c":"Epileptic seizure; Seizures","HPO_Name__c":"Seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The presence of skeletal muscular atrophy (which is also known as amyotrophy).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003202","HPO_Synonym__c":"Amyotrophy; Amyotrophy involving the extremities; Muscle atrophy; Muscle atrophy, neurogenic; Muscle degeneration; Muscle hypotrophy; Muscle wasting; Muscular atrophy; Neurogenic muscle atrophy; Neurogenic muscle atrophy, especially in the lower limbs; Neurogenic muscular atrophy","HPO_Name__c":"Skeletal muscle atrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A state of excessive water intake and hypotonic (dilute) polyuria. Diabetes insipidus may be due to failure of vasopressin (AVP) release (central or neurogenic diabetes insipidus) or to a failure of the kidney to respond to AVP (nephrogenic diabetes insipidus).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000873","HPO_Name__c":"Diabetes insipidus","Feature_System__c":"Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000505","HPO_Synonym__c":"Impaired vision; Loss of eyesight; Poor vision; Visual impairment","HPO_Name__c":"Visual impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Bulbar weakness (or bulbar palsy) refers to bilateral impairment of function of the lower cranial nerves IX, X, XI and XII, which occurs due to lower motor neuron lesion either at nuclear or fascicular level in the medulla or from bilateral lesions of the lower cranial nerves outside the brain-stem. Bulbar weakness is often associated with difficulty in chewing, weakness of the facial muscles, dysarthria, palatal weakness and regurgitation of fluids, dysphagia, and dysphonia.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001283","HPO_Synonym__c":"Bulbar muscle weakness; Bulbar palsies; Bulbar weakness","HPO_Name__c":"Bulbar palsy","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduced strength and weakness of the muscles of the arms and legs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003690","HPO_Synonym__c":"Limb muscle weakness; Limb weakness","HPO_Name__c":"Limb muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002093","HPO_Synonym__c":"Respiratory impairment","HPO_Name__c":"Respiratory insufficiency","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Structural abnormality affecting one or more of the cranial nerves, which emerge directly from the brain stem.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001291","HPO_Synonym__c":"Abnormality of cranial nerve; Abnormality of the cranial nerves; Cranial nerve disease; Cranial nerve involvement","HPO_Name__c":"Abnormal cranial nerve morphology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduced strength of muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001324","HPO_Synonym__c":"Muscle weakness; Muscular weakness","HPO_Name__c":"Muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An unintentional, oscillating to-and-fro muscle movement about a joint axis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001337","HPO_Synonym__c":"Tremor; Tremors","HPO_Name__c":"Tremor","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97229","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001252","HPO_Synonym__c":"Low muscle tone; Low or weak muscle tone; Muscle hypotonia; Muscular hypotonia","HPO_Name__c":"Hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology","Congenital Abnormality"],"Specialist":["Genetics","Neurology","Ophthalmology","Otolaryngology","Neuro-Ophthalmology","Neuromuscular medicine","Pediatrics"]},"synonyms":["brown-vialetto-van laere syndrome"," disorder of riboflavin transmembrane transporter activity"," fazio-londe syndrome"," pontobulbar palsy with deafness"," progressive bulbar palsy with sensorineural deafness"," riboflavin transmembrane transporter activity disease"," sensorineural hearing loss-pontobulbar palsy syndrome"],"spanishId":12726,"spanishName":"deficiencia-del-transportador-de-riboflavina"}