{"Name":"Bardet-Biedl syndrome 4","DiseaseID__c":"GARD:0000823","id":823,"encodedName":"bardet-biedl-syndrome-4","IsDeleted":false,"Disease_Name_Full__c":"Bardet-Biedl syndrome 4","Xref_IDs__c":"C2936864; C537912; DOID:0110126; MEDGEN:423627; MONDO:0014433; OMIM:615982","USA_Estimate__c":null,"No_of_Specialist_Tagsa__c":0,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":0,"World_Estimate__c":null,"No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":2,"Disease_Characteristics_Score__c":4,"No_of_Age_at_Onset__c":0,"Description_Source__c":"OMIM:615982","Disease_Description__c":"BBS4 is a rare multisystemic disorder characterized primarily by retinal dystrophy, obesity, polydactyly, and renal dysfunction that accounts for less than 3% of BBS ({4:Katsanis et al., 2002}). Anosmia has been described in patients with BBS4 ({3:Iannaccone et al., 2005}), as well as polydactyly confined to the hands ({1:Carmi et al., 1995}).\\n\\nFor a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 ({209900}).","GARD_Name__c":"Bardet-Biedl syndrome 4","GARD_Synonym__c":"bardet-biedl syndrome type 4; bbs4","Curated_Disease_Description_Source__c":"MEDGEN:C2936864","Curated_Disease_Description__c":"Bardet-Biedl syndrome (BBS) is characterized by rod-cone dystrophy, truncal obesity, postaxial polydactyly, cognitive impairment, male hypogonadotropic hypogonadism, complex female genitourinary malformations, and renal abnormalities. The visual prognosis for children with BBS is poor. Night blindness is usually evident by age seven to eight years; the mean age of legal blindness is 15.5 years. Birth weight is usually normal, but significant weight gain begins within the first year and becomes a lifelong issue for most individuals. A majority of individuals have significant learning difficulties; a minority have severe impairment on IQ testing. Renal disease is a major cause of morbidity and mortality.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":null,"SourceID__c":"OMIM:615982","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0014433","ORPHANET_ID__c":null,"Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":null,"Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":null,"Spanish_GARD_Synonym__c":null,"Category_Linearization__c":null,"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":"Bardet-Biedl syndrome (BBS) is characterized by rod-cone dystrophy, truncal obesity, postaxial polydactyly, cognitive impairment, male hypogonadotropic hypogonadism, complex female genitourinary malformations, and renal abnormalities. The visual prognosis for children with BBS is poor. Night blindness is usually evident by age seven to eight years; the mean age of legal blindness is 15.5 years. Birth weight is usually normal, but significant weight gain begins within the first year and becomes a lifelong issue for most individuals. A majority of individuals have significant learning difficulties; a minority have severe impairment on IQ testing. Renal disease is a major cause of morbidity and mortality.","Curated_Disease_Description_Source__c":"MEDGEN:C2936864","GARD_Synonym__c":"bardet-biedl syndrome type 4; bbs4","Name":"Bardet-Biedl syndrome 4","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Bardet-Biedl Syndrome Foundation & Family Association","Website__c":"https://www.bardetbiedl.org"},{"Account_Name__c":"Bardet-Biedl Syndrome UK","Website__c":"https://bbsuk.org.uk"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C2936864"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0000823","Source__c":"RareSource"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C2936864","Source__c":"C2936864","Xref__c":"C2936864"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C537912","Source__c":"MONDO:0014433","Xref__c":"C537912"},{"URL__c":"https://www.omim.org/entry/615982","Source__c":"C2936864; MONDO:0014433","Xref__c":"OMIM:615982"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=423627","Source__c":"C2936864","Xref__c":"MEDGEN:423627"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0110126","Source__c":"MONDO:0014433","Xref__c":"DOID:0110126"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0014433","Source__c":"GARD:0000823","Xref__c":"MONDO:0014433"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"BBS4","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:615982","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Testis in inguinal canal. That is, absence of one or both testes from the scrotum owing to failure of the testis or testes to descend through the inguinal canal to the scrotum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000028","HPO_Synonym__c":"Cryptorchism; Undescended testes; Undescended testis","HPO_Name__c":"Cryptorchidism","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","Feature__r":{"HPO_Description__c":"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.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001156","HPO_Synonym__c":"Brachydactyly syndrome; Short fingers or toes","HPO_Name__c":"Brachydactyly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","Feature__r":{"HPO_Description__c":"A nonspecific term denoting progressive loss of the retinal pigment epithelium (RPE) and/or neurosensory retinal cells.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000546","HPO_Synonym__c":"Retina degeneration","HPO_Name__c":"Retinal degeneration","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","Feature__r":{"HPO_Description__c":"A fluid filled sac in the kidney.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000107","HPO_Synonym__c":"Kidney cyst","HPO_Name__c":"Renal cyst","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","Feature__r":{"HPO_Description__c":"An inherited retinal disease subtype in which the rod photoreceptors appear to be more severely affected than the cone photoreceptors. Typical presentation is with nyctalopia (due to rod dysfunction) followed by loss of mid-peripheral field of vision, which gradually extends and leaves many patients with a small central island of vision due to the preservation of macular cones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000510","HPO_Synonym__c":"Retinitis pigmentosa; Rod cone dystrophy","HPO_Name__c":"Rod-cone dystrophy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Inability to see well at night or in poor light.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000662","HPO_Synonym__c":"Night blindness; Night-blindness; Poor night vision","HPO_Name__c":"Nyctalopia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","Feature__r":{"HPO_Description__c":"Accumulation of substantial excess body fat.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001513","HPO_Synonym__c":"Having too much body fat; Obesity","HPO_Name__c":"Obesity","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Any abnormality of the teeth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000164","HPO_Synonym__c":"Abnormal dentition; Abnormal teeth; Dental abnormalities; Dental abnormality; Dental anomalies","HPO_Name__c":"Abnormality of the dentition","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","Feature__r":{"HPO_Description__c":"A congenital anomaly characterized by the presence of supernumerary fingers or toes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010442","HPO_Synonym__c":"More than five fingers or toes on hands or feet","HPO_Name__c":"Polydactyly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Webbing or fusion of the fingers or toes, involving soft parts only or including bone structure. Bony fusions are referred to as \\\"bony\\\" syndactyly if the fusion occurs in a radio-ulnar axis. Fusions of bones of the fingers or toes in a proximo-distal axis are referred to as \\\"symphalangism\\\".","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001159","HPO_Synonym__c":"Webbed fingers or toes","HPO_Name__c":"Syndactyly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","HPO_Frequency__c":"Frequent (30-79%)","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":"OMIM:615982","Feature__r":{"HPO_Description__c":"Underdevelopment of part or all of the external reproductive organs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003241","HPO_Synonym__c":"Hypogenitalism; Small genitalia; Underdevelopment of external reproductive organs","HPO_Name__c":"External genital hypoplasia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:615982","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":"OMIM:615982","Feature__r":{"HPO_Description__c":"An abnormality of the kidney.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000077","HPO_Synonym__c":"Abnormal kidney; Abnormality of the kidney; Renal anomalies; Renal anomaly","HPO_Name__c":"Abnormality of the kidney","HPO_Feature_Type__c":"Symptom"}}],"tags":{},"synonyms":["bardet-biedl syndrome type 4"," bbs4"]}