{"Name":"Autosomal recessive osteopetrosis","DiseaseID__c":"GARD:0015012","id":15012,"encodedName":"autosomal-recessive-osteopetrosis","IsDeleted":false,"Disease_Name_Full__c":"Autosomal recessive osteopetrosis","Xref_IDs__c":"367489004; C129733; C4272578; MEDGEN:1385510; MONDO:0019026; OMIMPS:259700; ORPHA:667","USA_Estimate__c":"5,000","No_of_Specialist_Tagsa__c":5,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":0,"World_Estimate__c":"8,000 to 80,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":4,"Disease_Characteristics_Score__c":6,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MONDO:0019026","Disease_Description__c":"An autosomal recessive form of osteopetrosis caused by mutation(s) in at least 8 genes related to osteoclast function. This condition is characterized by the failure of osteoclasts to resorb bone, resulting in impaired bone modeling/remodeling, and skeletal fragility despite increased bone mass; it is also associated with hematopoietic insufficiency, hypocalcemia, disturbed tooth eruption, nerve entrapment syndromes, and growth impairment. Some cases are also associated with progressive neurological deterioration.","GARD_Name__c":"Autosomal recessive osteopetrosis","GARD_Synonym__c":"autosomal recessive malignant osteopetrosis; autosomal recessive osteopetrosis (disease); infantile malignant osteopetrosis; optb; osteopetrosis (disease), autosomal recessive","Curated_Disease_Description_Source__c":"ORPHA:667","Curated_Disease_Description__c":"Infantile malignant osteopetrosis is a rare congenital disorder of bone resorption characterized by generalized skeletal densification.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"5,000","Age_at_Onset_Snippet_Text__c":"as a Newborn and as an Infant","SourceID__c":"ORPHA:667","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0019026","ORPHANET_ID__c":"ORPHA:667","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Osteopetrosis maligna autosómica recesiva","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"osteopetrosis maligna autosómica recesiva","Spanish_GARD_Synonym__c":"osteopetrosis maligna del lactante","Category_Linearization__c":"ORPHA:93419","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":"Infantile malignant osteopetrosis is a rare congenital disorder of bone resorption characterized by generalized skeletal densification.","Curated_Disease_Description_Source__c":"ORPHA:667","GARD_Synonym__c":"autosomal recessive malignant osteopetrosis; autosomal recessive osteopetrosis (disease); infantile malignant osteopetrosis; optb; osteopetrosis (disease), autosomal recessive","Name":"Autosomal recessive osteopetrosis","Curated_USA_Estimate__c":"5,000","estimateUsa":"5,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Osteopetrosis Support Trust","Website__c":"https://www.osteopetrosis-support-trust.org.uk/"}],"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":"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":"Orthopedics","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Neuro-Ophthalmology","Tag_Category__c":"Specialist","curated_tag_name":"Neuro-ophthalmic diseases"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:667"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:667"}],"External_Identifier_Disease__c":[{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=367489004","Source__c":"MONDO:0019026","Xref__c":"367489004"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C129733","Source__c":"C4272578; MONDO:0019026","Xref__c":"C129733"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1385510","Source__c":"C4272578","Xref__c":"MEDGEN:1385510"},{"URL__c":"https://www.omim.org/phenotypicSeries/PS259700","Source__c":"MONDO:0019026","Xref__c":"OMIMPS:259700"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4272578","Source__c":"C4272578","Xref__c":"C4272578"},{"URL__c":"https://www.orpha.net/en/disease/detail/667","Source__c":"C4272578; MONDO:0019026","Xref__c":"ORPHA:667"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0019026","Source__c":"GARD:0015012","Xref__c":"MONDO:0019026"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"TNFSF11","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"CLCN7","GHR_URL__c":"https://medlineplus.gov/genetics/gene/clcn7","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"TCIRG1","GHR_URL__c":"https://medlineplus.gov/genetics/gene/tcirg1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"SNX10","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormal narrowing or constriction of the pulmonary artery, in the main pulmonary artery and/or in the left or right pulmonary artery branches.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004415","HPO_Synonym__c":"Narrowing of lung artery","HPO_Name__c":"Pulmonary artery stenosis","Feature_System__c":"Cardiovascular System; Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of movement with a neurological basis characterized by changes in coordination and speed of voluntary movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100022","HPO_Synonym__c":"Abnormality of movement; Movement disorder; Unusual movement","HPO_Name__c":"Abnormality of movement","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormally pale skin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000980","HPO_Name__c":"Pallor","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000639","HPO_Synonym__c":"Involuntary, rapid, rhythmic eye movements","HPO_Name__c":"Nystagmus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","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:667","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Any structural abnormality of the pulmonary valve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001641","HPO_Synonym__c":"Abnormality of the pulmonary valve; Anomaly of the pulmonary valve","HPO_Name__c":"Abnormal pulmonary valve morphology","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An increased susceptibility to respiratory infections as manifested by a history of recurrent respiratory infections.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002205","HPO_Synonym__c":"Frequent respiratory infections; Multiple respiratory infections; Recurrent respiratory infections; respiratory infections, recurrent; Susceptibility to respiratory infections","HPO_Name__c":"Recurrent respiratory infections","Feature_System__c":"Respiratory system; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Lack of breathing with no movement of the respiratory muscles and no exchange of air in the lungs. This term refers to a disposition to have recurrent episodes of apnea rather than to a single event.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002104","HPO_Synonym__c":"Absence of spontaneous respiration; Apneic episodes; Apnoea","HPO_Name__c":"Apnea","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of one or more metaphysis, i.e., of the somewhat wider portion of a long bone that is adjacent to the epiphyseal growth plate and grows during childhood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000944","HPO_Synonym__c":"Abnormality of the wide portion of a long bone","HPO_Name__c":"Abnormal metaphysis morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the texture of the hair.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010719","HPO_Synonym__c":"Abnormality of hair texture","HPO_Name__c":"Abnormality of hair texture","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormally decreased calcium concentration in the blood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002901","HPO_Synonym__c":"Hypocalcaemia; Low blood calcium levels","HPO_Name__c":"Hypocalcemia","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001939","HPO_Synonym__c":"Laboratory abnormality; Metabolism abnormality","HPO_Name__c":"Abnormality of metabolism/homeostasis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Occipitofrontal (head) circumference greater than 97th centile compared to appropriate, age matched, sex-matched normal standards. Alternatively, a apparently increased size of the cranium.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000256","HPO_Synonym__c":"Increased size of cranium; Increased size of skull; Large head; Large head circumference; Macrocephalus; Macrocrania; Megacephaly","HPO_Name__c":"Macrocephaly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Bursts of large-amplitude multidirectional saccades without intersaccadic interval","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010543","HPO_Name__c":"Opsoclonus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007807","HPO_Name__c":"Optic nerve compression","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A reduction in erythrocytes volume or hemoglobin concentration.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001903","HPO_Synonym__c":"Anaemia; Low number of red blood cells or hemoglobin","HPO_Name__c":"Anemia","Feature_System__c":"Blood and Blood-Forming Tissue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An anomaly of the rib.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000772","HPO_Synonym__c":"Abnormality of the ribs; Rib abnormalities; Rib anomalies","HPO_Name__c":"Abnormal rib morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An unpleasant sensation characterized by physical discomfort (such as pricking, throbbing, or aching) localized to bone.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002653","HPO_Synonym__c":"Bone pain","HPO_Name__c":"Bone pain","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A deficiency or slowing down of growth pre- and postnatally.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001510","HPO_Synonym__c":"Delayed growth; Growth deficiency; Growth delay; Growth failure; Growth retardation; Poor growth; Retarded growth","HPO_Name__c":"Growth delay","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Pulmonary hypertension is defined mean pulmonary artery pressure of 25mmHg or more and pulmonary capillary wedge pressure of 15mmHg or less when measured by right heart catheterisation at rest and in a supine position.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002092","HPO_Synonym__c":"Increased blood pressure in blood vessels of lungs; Pulmonary artery hypertension","HPO_Name__c":"Pulmonary arterial hypertension","Feature_System__c":"Cardiovascular System; Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of temperature homeostasis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004370","HPO_Synonym__c":"Abnormality of temperature regulation; Impaired temperature control; Impaired temperature regulation; Inability to control temperature; Inability to regulate temperature; Poor control of temperature; Poor regulation of temperature; Poor temperature control; Poor temperature regulation; Unable to control temperature","HPO_Name__c":"Abnormality of temperature regulation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Loss of the primary (also known as deciduous) teeth before the usual age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006323","HPO_Synonym__c":"Early loss of baby teeth; Early loss of deciduous teeth; Early loss of primary teeth; Premature deciduous tooth loss; Premature loss of baby teeth; Premature loss of deciduous teeth","HPO_Name__c":"Premature loss of primary teeth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormally increased size of the liver.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002240","HPO_Synonym__c":"Enlarged liver","HPO_Name__c":"Hepatomegaly","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormally increased formation of dense trabecular bone tissue. Despite the increased density of bone tissue, osteopetrotic bones tend to be more fracture-prone than normal.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011002","HPO_Synonym__c":"Harder, denser, fracture-prone bones","HPO_Name__c":"Osteopetrosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Chronic inflammation of the nasal mucosa.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002257","HPO_Name__c":"Chronic rhinitis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Enlargement (swelling) of a lymph node.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002716","HPO_Synonym__c":"Lymph node hyperplasia; Swollen lymph nodes","HPO_Name__c":"Lymphadenopathy","Feature_System__c":"Cardiovascular System; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The repeated occurrence of bone fractures (implying an abnormally increased tendency for fracture).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002757","HPO_Synonym__c":"Frequent fractures; Increased fracture rate; Increased fractures; Multiple fractures; Multiple spontaneous fractures; Recurrent fractures; Varying degree of multiple fractures","HPO_Name__c":"Recurrent fractures","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Inflammation or infection of the middle ear.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000388","HPO_Synonym__c":"Middle ear infection","HPO_Name__c":"Otitis media","Feature_System__c":"Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduced width of the chest from side to side, associated with a reduced distance from the sternal notch to the tip of the shoulder.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000774","HPO_Synonym__c":"Low chest circumference; Narrow chest; Narrow shoulders; Narrow thorax; Reduced anterior-posterior chest diameter","HPO_Name__c":"Narrow chest","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","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:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Craniosynostosis refers to the premature closure of the cranial sutures. Primary craniosynostosis refers to the closure of one or more sutures due to abnormalities in skull development, and secondary craniosynostosis results from failure of brain growth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001363","HPO_Synonym__c":"Cranial suture synostosis; Craniosyostosis; Early fusion of cranial sutures; Premature closure of cranial sutures; Premature suture closure","HPO_Name__c":"Craniosynostosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A bending or abnormal curvature of a long bone.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006487","HPO_Synonym__c":"Bowed long bones; Bowing of long bones; Bowing of the long bones; Camptomelia; Diaphyseal bowing; Diaphyseal bowing of long bones","HPO_Name__c":"Bowing of the long bones","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An anomaly of epiphysis, which is the expanded articular end of a long bone that developes from a secondary ossification center, and which during the period of growth is either entirely cartilaginous or is separated from the shaft by a cartilaginous disk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005930","HPO_Synonym__c":"Abnormal shape of end part of bone; Abnormality of epiphysis morphology; Abnormality of the epiphyses; Anomaly of the epiphyses; Epiphyseal abnormality","HPO_Name__c":"Abnormal epiphysis morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormally decreased phosphate concentration in the blood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002148","HPO_Synonym__c":"Hypophosphataemia; Low blood phosphate level","HPO_Name__c":"Hypophosphatemia","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormal increased size of the spleen.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001744","HPO_Synonym__c":"Increased spleen size; Large spleen","HPO_Name__c":"Splenomegaly","Feature_System__c":"Cardiovascular System; Immune System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An ecchymosis (bruise) refers to the skin discoloration caused by the escape of blood into the tissues from ruptured blood vessels. This term refers to an abnormally increased susceptibility to bruising. The corresponding phenotypic abnormality is generally elicited on medical history as a report of frequent ecchymoses or bruising without adequate trauma.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000978","HPO_Synonym__c":"Bruisability; Bruise easily; Bruising susceptibility; Easy bruisability; Easy bruising","HPO_Name__c":"Bruising susceptibility","Feature_System__c":"Skin System; Cardiovascular System; Blood and Blood-Forming Tissue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Occasional (5-29%)","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:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A decreased magnitude of the sensory perception of sound.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000365","HPO_Synonym__c":"Deafness; Hearing defect; Hearing impairment; Hypacusis","HPO_Name__c":"Hearing impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The presence of one or more bullae on the skin, defined as fluid-filled blisters more than 5 mm in diameter with thin walls.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008066","HPO_Synonym__c":"Abnormal blistering of the skin; Blister; Blistering, generalized; Blisters; Skin bullae","HPO_Name__c":"Abnormal blistering of the skin","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hydrocephalus is an active distension of the ventricular system of the brain resulting from inadequate passage of CSF from its point of production within the cerebral ventricles to its point of absorption into the systemic circulation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000238","HPO_Synonym__c":"Hydrocephaly; Nonsyndromal hydrocephalus; Too much cerebrospinal fluid in the brain","HPO_Name__c":"Hydrocephalus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An anomaly of visually evoked potentials (VEP), which are electrical potentials, initiated by brief visual stimuli, which are recorded from the scalp overlying the visual cortex.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000649","HPO_Synonym__c":"Abnormal vision evoked potentials; Abnormal visual evoked potential; Abnormal visual evoked responses; Abnormal visual-evoked potentials; VEP abnormalities","HPO_Name__c":"Abnormality of visual evoked potentials","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Delayed tooth eruption, which can be defined as tooth eruption more than 2 SD beyond the mean eruption age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000684","HPO_Synonym__c":"Delayed dental development; Delayed dental eruption; Delayed eruption; Delayed eruption of teeth; Delayed teeth eruption; Delayed tooth eruption; Eruption, delayed; Late eruption of teeth; Late tooth eruption","HPO_Name__c":"Delayed eruption of teeth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:667","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A reduction of bone mineral density, that is, of the amount of matter per cubic centimeter of bones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004349","HPO_Synonym__c":"Decreased bone mineral density; Decreased bone mineral density Z score; Low solidness and mass of the bones","HPO_Name__c":"Reduced bone mineral density","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Congenital Abnormality"],"Specialist":["Genetics","Ophthalmology","Orthopedics","Neuro-Ophthalmology","Pediatrics"]},"synonyms":["autosomal recessive malignant osteopetrosis"," autosomal recessive osteopetrosis (disease)"," infantile malignant osteopetrosis"," optb"," osteopetrosis (disease), autosomal recessive"]}