{"Name":"Diencephalic-mesencephalic junction dysplasia syndrome 1","DiseaseID__c":"GARD:0008510","id":8510,"encodedName":"diencephalic-mesencephalic-junction-dysplasia-syndrome-1","IsDeleted":false,"Disease_Name_Full__c":"Diencephalic-mesencephalic junction dysplasia syndrome 1","Xref_IDs__c":"C4538630; C537546; MEDGEN:1615973; MONDO:0009625; OMIM:251280","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":1,"Disease_Characteristics_Score__c":3,"No_of_Age_at_Onset__c":0,"Description_Source__c":"MEDGEN:C1855055","Disease_Description__c":null,"GARD_Name__c":"Diencephalic-mesencephalic junction dysplasia syndrome 1","GARD_Synonym__c":"dmjds1; microcephaly with spastic quadriplegia","Curated_Disease_Description_Source__c":"MEDGEN:C1855055","Curated_Disease_Description__c":"This rare genetic brain development disorder follows an autosomal recessive inheritance pattern, meaning a child is affected when they inherit a changed gene from both parents. The disease involves the area of the brain around the midbrain and leads to progressive microcephaly, which is when the head and brain size are smaller than expected over time. Children with this disease have very delayed or even absent development of movement and mental skills, often with profound intellectual disability. They often have muscle stiffness or abnormal movements called spasticity or dystonia. Some people may also have seizures and problems with vision. Brain scans show a specific developmental problem in the midbrain, and there may also be small areas of calcium buildup in the skull.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":null,"SourceID__c":null,"Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0009625","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":"This rare genetic brain development disorder follows an autosomal recessive inheritance pattern, meaning a child is affected when they inherit a changed gene from both parents. The disease involves the area of the brain around the midbrain and leads to progressive microcephaly, which is when the head and brain size are smaller than expected over time. Children with this disease have very delayed or even absent development of movement and mental skills, often with profound intellectual disability. They often have muscle stiffness or abnormal movements called spasticity or dystonia. Some people may also have seizures and problems with vision. Brain scans show a specific developmental problem in the midbrain, and there may also be small areas of calcium buildup in the skull.","Curated_Disease_Description_Source__c":"MEDGEN:C1855055","GARD_Synonym__c":"dmjds1; microcephaly with spastic quadriplegia","Name":"Diencephalic-mesencephalic junction dysplasia syndrome 1","estimateUsa":""}],"External_Identifier_Disease__c":[{"URL__c":"https://www.omim.org/entry/251280","Source__c":"C4538630; MONDO:0009625","Xref__c":"OMIM:251280"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=1615973","Source__c":"C4538630","Xref__c":"MEDGEN:1615973"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C537546","Source__c":"MONDO:0009625","Xref__c":"C537546"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C4538630","Source__c":"C4538630","Xref__c":"C4538630"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0009625","Source__c":"GARD:0008510","Xref__c":"MONDO:0009625"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"PCDH12","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001263","HPO_Synonym__c":"Delayed cognitive development; Delayed development; Delayed developmental milestones; Delayed intellectual development; Delayed milestones; Delayed psychomotor development; Developmental delay; Developmental delay in early childhood; Developmental delay, global; Developmental retardation; GDD; Lack of psychomotor development; Motor and developmental delay; Motormental retardation; Psychomotor delay; Psychomotor development deficiency; Psychomotor development failure; Psychomotor developmental delay; Retarded development; Retarded mental development; Retarded psychomotor development","HPO_Name__c":"Global developmental delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormal restriction of fetal growth with fetal weight below the tenth percentile for gestational age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001511","HPO_Synonym__c":"Fetal growth restriction; FGR; In utero growth retardation; Intrauterine growth failure; Intrauterine growth restriction; Intrauterine growth retardation, IUGR; Intrauterine retardation; IUGR; Prenatal growth deficiency; Prenatal growth failure; Prenatal growth retardation; Prenatal onset growth retardation; Prenatal-onset growth retardation; Small for gestational age infant","HPO_Name__c":"Intrauterine growth retardation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Head circumference below 2 standard deviations below the mean for age and sex at birth.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011451","HPO_Synonym__c":"Congenital decreased head circumference; Congenital microcephaly; Congenital small skull; Decreased head circumference present at birth; Microcephaly present at birth; Small cranium present at birth","HPO_Name__c":"Primary microcephaly","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A focal clonic seizure is a type of focal motor seizure characterized by sustained rhythmic jerking, that is regularly repetitive.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002266","HPO_Synonym__c":"Focal clonic seizures; Localized clonic seizure; Partial clonic seizure; Segmental clonic seizure","HPO_Name__c":"Focal clonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Hypsarrhythmia is abnormal interictal high amplitude waves and a background of irregular spikes. There is continuous (during wakefulness), high-amplitude (>200 Hz), generalized polymorphic slowing with no organized background and multifocal spikes demonstrated by electroencephalography (EEG).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002521","HPO_Synonym__c":"Hypsarrhythmia by EEG","HPO_Name__c":"Hypsarrhythmia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormally increased muscular tone that causes fixed abnormal postures. There is a slow, intermittent twisting motion that leads to exaggerated turning and posture of the extremities and trunk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001332","HPO_Synonym__c":"Dystonic movements","HPO_Name__c":"Dystonia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Infantile spasms represent a subset of \\\"epileptic spasms\\\". Infantile Spasms are epileptic spasms starting in the first year of life (infancy).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012469","HPO_Name__c":"Infantile spasms","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Muscular hypotonia (abnormally low muscle tone) affecting the musculature of the trunk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008936","HPO_Synonym__c":"Low muscle tone in trunk; Muscular hypotonia of the trunk; Truncal hypotonia","HPO_Name__c":"Axial hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","Feature__r":{"HPO_Description__c":"A generalized myoclonic seizure is a type of generalized motor seizure characterized by bilateral, sudden, brief (<100 ms) involuntary single or multiple contraction of muscles or muscle groups of variable topography (axial, proximal limb, distal). Myoclonus is less regularly repetitive and less sustained than is clonus.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002123","HPO_Synonym__c":"Generalised epileptic myoclonus; Generalised myoclonic seizure; Generalized epileptic myoclonus; Generalized myoclonic seizures; Myoclonus seizures","HPO_Name__c":"Generalized myoclonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","Feature__r":{"HPO_Description__c":"Profound intellectual disability (ID) is defined as a type of ID characterized by profoundly sub-average adaptive functioning and intellectual functioning, with an intelligence quotient (IQ) below 20.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002187","HPO_Synonym__c":"Intellectual disability, profound; IQ less than 20; Mental retardation, profound; Profound mental retardation","HPO_Name__c":"Profound intellectual disability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","Feature__r":{"HPO_Description__c":"Spastic paralysis affecting all four limbs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002510","HPO_Synonym__c":"Spastic quadriplegia","HPO_Name__c":"Spastic tetraplegia","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The birth of a baby of less than 37 weeks of gestational age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001622","HPO_Synonym__c":"Premature birth; Premature delivery; Premature delivery of affected infants; Preterm birth; Preterm delivery; Shortened gestation time","HPO_Name__c":"Premature birth","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Very frequent (80-99%)","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":"OMIM:251280","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":"OMIM:251280","Feature__r":{"HPO_Description__c":"Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001347","HPO_Synonym__c":"Increased deep tendon reflexes; Increased reflexes","HPO_Name__c":"Hyperreflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A tonic seizure is a type of motor seizure characterized by unilateral or bilateral limb stiffening or elevation, often with neck stiffening.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0032792","HPO_Name__c":"Tonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:251280","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Progressive microcephaly is diagnosed when the head circumference falls progressively behind age- and sex-dependent norms.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000253","HPO_Synonym__c":"Microcephaly, postnatal, progressive; Microcephaly, progressive; Progressively abnormally small cranium; Progressively abnormally small skull","HPO_Name__c":"Progressive microcephaly","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{},"synonyms":["dmjds1"," microcephaly with spastic quadriplegia"]}