{"Name":"Megaconial type congenital muscular dystrophy","DiseaseID__c":"GARD:0010317","id":10317,"encodedName":"megaconial-type-congenital-muscular-dystrophy","IsDeleted":false,"Disease_Name_Full__c":"Megaconial type congenital muscular dystrophy","Xref_IDs__c":"C1865233; C566527; DOID:0110632; MEDGEN:355943; MONDO:0011246; OMIM:602541; ORPHA:280671","USA_Estimate__c":"1,000","No_of_Specialist_Tagsa__c":4,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":0,"World_Estimate__c":"1 to 8,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":2,"Disease_Characteristics_Score__c":6,"No_of_Age_at_Onset__c":2,"Description_Source__c":"ORPHA:280671","Disease_Description__c":"A rare, genetic, skeletal muscle disease characterized by an early-onset hypotonia, muscle weakness, global developmental delay with intellectual disability, and cardiomyopathy. Congenital structural heart defects and ichthyosiform cutaneous lesions have also been associated. Muscle biopsy shows characteristic enlarged mitochondria located at the periphery of muscle fibers.","GARD_Name__c":"Megaconial type congenital muscular dystrophy","GARD_Synonym__c":"chkb-related muscle diseases; congenital megaconial myopathy; congenital muscular dystrophy due to phosphatidylcholine biosynthesis defect; congenital muscular dystrophy with mitochondrial structural abnormalities; mdcmc; megaconial congenital muscular dystrophy; muscular dystrophy, congenital, with mitochondrial structural abnormalities","Curated_Disease_Description_Source__c":"ORPHA:280671","Curated_Disease_Description__c":"A rare, genetic, skeletal muscle disease characterized by an early-onset hypotonia, muscle weakness, global developmental delay with intellectual disability, and cardiomyopathy. Congenital structural heart defects and ichthyosiform cutaneous lesions have also been associated. Muscle biopsy shows characteristic enlarged mitochondria located at the periphery of muscle fibers.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"1,000","Age_at_Onset_Snippet_Text__c":"as a Newborn and as an Infant","SourceID__c":"ORPHA:280671","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0011246","ORPHANET_ID__c":"ORPHA:280671","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Distrofia muscular congénita megaconial","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"distrofia muscular congénita megaconial","Spanish_GARD_Synonym__c":"distrofia muscular congénita con anomalías mitocondriales estructurales; distrofia muscular congénita por un defecto de la biosíntesis de fosfatidilcolina; miopatía megaconial congénita","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":"A rare, genetic, skeletal muscle disease characterized by an early-onset hypotonia, muscle weakness, global developmental delay with intellectual disability, and cardiomyopathy. Congenital structural heart defects and ichthyosiform cutaneous lesions have also been associated. Muscle biopsy shows characteristic enlarged mitochondria located at the periphery of muscle fibers.","Curated_Disease_Description_Source__c":"ORPHA:280671","GARD_Synonym__c":"chkb-related muscle diseases; congenital megaconial myopathy; congenital muscular dystrophy due to phosphatidylcholine biosynthesis defect; congenital muscular dystrophy with mitochondrial structural abnormalities; mdcmc; megaconial congenital muscular dystrophy; muscular dystrophy, congenital, with mitochondrial structural abnormalities","Name":"Megaconial type congenital muscular dystrophy","Curated_USA_Estimate__c":"1,000","estimateUsa":"1,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Muscular Dystrophy Canada","Website__c":"https://muscle.ca/"}],"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":"Inborn Errors of Metabolism","Tag_Category__c":"Cause;Disease Category","category_description":"Inherited metabolic diseases, or inborn errors of metabolism, are a group of genetic diseases that affect the ability of the body's cells to convert food into energy.","curated_tag_name":"Inherited metabolic diseases"},{"Tag_Name__c":"Muscular Dystrophy","Tag_Category__c":"Account;Disease Category","category_description":"Muscular dystrophy refers to a group of inherited disorders that cause muscles to gradually weaken and break down.","curated_tag_name":"Muscular dystrophy"},{"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":"Neonatal","Provided_By__c":"ORPHA:280671"},{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:280671"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C1865233"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0010317","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK589929","Source__c":"Gene Review","Xref__c":"NBK589929"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C566527","Source__c":"MONDO:0011246","Xref__c":"C566527"},{"URL__c":"https://www.omim.org/entry/602541","Source__c":"C1865233; MONDO:0011246; ORPHA:280671","Xref__c":"OMIM:602541"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C1865233","Source__c":"C1865233","Xref__c":"C1865233"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=355943","Source__c":"C1865233","Xref__c":"MEDGEN:355943"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0110632","Source__c":"MONDO:0011246","Xref__c":"DOID:0110632"},{"URL__c":"https://www.orpha.net/en/disease/detail/280671","Source__c":"C1865233; MONDO:0011246; ORPHA:280671","Xref__c":"ORPHA:280671"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=1230273004","Source__c":"C1865233","Xref__c":"1230273004"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0011246","Source__c":"GARD:0010317","Xref__c":"MONDO:0011246"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"CHKB","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:602541","Feature__r":{"HPO_Description__c":"A phenomenon whereby patients are not able to stand up without the use of the hands owing to weakness of the proximal muscles of the lower limbs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003391","HPO_Synonym__c":"Gower sign; Positive Gower sign; Positive Gowers sign","HPO_Name__c":"Gowers sign","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","HPO_Frequency__c":"Very frequent (80-99%)","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":"OMIM:602541","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":"OMIM:602541","Feature__r":{"HPO_Description__c":"A disorder of muscle unrelated to impairment of innervation or neuromuscular junction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003198","HPO_Synonym__c":"Muscle tissue disease; Myopathic changes","HPO_Name__c":"Myopathy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An increased volume of the endomysium, which is a connective tissue sheath that surrounds each muscle fiber. Together, bundles of muscle fibers form a fasciculus, surrounded by another layer of connective tissue called the perimysium.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100297","HPO_Synonym__c":"Endomysial fibrosis","HPO_Name__c":"Increased endomysial connective tissue","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An elevation of the level of the enzyme creatine kinase (also known as creatine phosphokinase (CK; EC 2.7.3.2) in the blood. CK levels can be elevated in a number of clinical disorders such as myocardial infarction, rhabdomyolysis, and muscular dystrophy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003236","HPO_Synonym__c":"Elevated blood creatine phosphokinase; Elevated circulating creatine phosphokinase; Elevated creatine kinase; Elevated serum CPK; Elevated serum creatine kinase; Elevated serum creatine phosphokinase; High serum creatine kinase; Increased CPK; Increased creatine kinase; Increased creatine phosphokinase; Increased serum CK; Increased serum creatine kinase; Increased serum creatine phosphokinase","HPO_Name__c":"Elevated circulating creatine kinase concentration","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"OMIM:602541","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":"OMIM:602541","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002465","HPO_Synonym__c":"Poor speech","HPO_Name__c":"Poor speech","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","Feature__r":{"HPO_Description__c":"Weakness of the hip girdle and upper thigh muscles, for instance in myopathies, leads to an instability of the pelvis on standing and walking. If the muscles extending the hip joint are affected, the posture in that joint becomes flexed and lumbar lordosis increases. The patients usually have difficulties standing up from a sitting position. Due to weakness in the gluteus medius muscle, the hip on the side of the swinging leg drops with each step (referred to as Trendelenburg sign). The gait appears waddling. The patients frequently attempt to counteract the dropping of the hip on the swinging side by bending the trunk towards the side which is in the stance phase (in the German language literature this is referred to as Duchenne sign). Similar gait patterns can be caused by orthopedic conditions when the origin and the insertion site of the gluteus medius muscle are closer to each other than normal, for instance due to a posttraumatic elevation of the trochanter or pseudarthrosis of the femoral neck.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002515","HPO_Synonym__c":"Waddling gait; Waddling walk","HPO_Name__c":"Waddling gait","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The term dystrophy means abnormal growth. However, muscular dystrophy is used to describe primary myopathies with a genetic basis and a progressive course characterized by progressive skeletal muscle weakness and wasting, defects in muscle proteins, and histological features of muscle fiber degeneration (necrosis) and regeneration. If possible, it is preferred to use other HPO terms to describe the precise phenotypic abnormalities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003560","HPO_Name__c":"Muscular dystrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","HPO_Frequency__c":"Very frequent (80-99%)","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:602541","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Dilated cardiomyopathy (DCM) is defined by the presence of left ventricular dilatation and left ventricular systolic dysfunction in the absence of abnormal loading conditions (hypertension, valve disease) or coronary artery disease sufficient to cause global systolic impairment. Right ventricular dilation and dysfunction may be present but are not necessary for the diagnosis.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001644","HPO_Synonym__c":"Cardiomyopathy, dilated; Congestive cardiomyopathy; DCM; Stretched and thinned heart muscle","HPO_Name__c":"Dilated cardiomyopathy","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Head circumference below 2 standard deviations below the mean for age and sex.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000252","HPO_Synonym__c":"Abnormally small cranium; Abnormally small skull; Decreased circumference of cranium; Decreased size of cranium; Decreased size of skull; Reduced head circumference; small cranium; Small head circumference","HPO_Name__c":"Microcephaly","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","Feature__r":{"HPO_Description__c":"An abnormality of the skin characterized the presence of excessive amounts of dry surface scales on the skin resulting from an abnormality of keratinization.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008064","HPO_Synonym__c":"Ichthyosiform abnormality of the skin; Ichthyotic skin","HPO_Name__c":"Ichthyosis","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Enlargement of mitochondria. Mitochondrial hypertrophy is not discernible by light microscopy. By electron microscopy (EM), hypertrophic mitochondria have normal cristae and normal matrix density. In contrast, swollen mitochondria display swollen cristae and irregular matrix densities in EM.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0033686","HPO_Synonym__c":"Megamitochondria","HPO_Name__c":"Mitochondrial hypertrophy","HPO_Feature_Type__c":"Lab"}},{"Provided_By__c":"OMIM:602541","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Generalized muscular hypotonia (abnormally low muscle tone).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001290","HPO_Synonym__c":"Generalized decreased muscle tone; Generalized muscular hypotonia; Hypotonia, generalized","HPO_Name__c":"Generalized hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","Feature__r":{"HPO_Description__c":"A type of Developmental delay characterized by a delay in acquiring motor skills.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001270","HPO_Synonym__c":"Delay in development of motor milestones; Delay in motor development; Delayed development of motor milestones; Delayed early motor milestones; Delayed motor development; Delayed motor milestones; Locomotor delay; Motor developmental delay; Motor developmental milestones not achieved; Motor retardation; Retarded motor development; Slow development of motor milestones","HPO_Name__c":"Motor delay","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:602541","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A degree of language development that is significantly below the norm for a child of a specified age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000750","HPO_Synonym__c":"Deficiency of speech development; Delayed language development; Delayed speech; Delayed speech acquisition; Delayed speech and language development; Delayed speech development; Impaired speech and language development; Impaired speech development; Language delay; Language delayed; Language development deficit; Late-onset speech development; Poor language development; Speech and language delay; Speech and language difficulties; Speech delay","HPO_Name__c":"Delayed speech and language development","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics","Inborn Errors of Metabolism"],"Disease Category":["Genetics","Neurology","Inborn Errors of Metabolism","Muscular Dystrophy"],"Specialist":["Genetics","Neurology","Neuromuscular medicine","Pediatrics"],"Account":["Muscular Dystrophy"]},"synonyms":["chkb-related muscle diseases"," congenital megaconial myopathy"," congenital muscular dystrophy due to phosphatidylcholine biosynthesis defect"," congenital muscular dystrophy with mitochondrial structural abnormalities"," mdcmc"," megaconial congenital muscular dystrophy"," muscular dystrophy, congenital, with mitochondrial structural abnormalities"]}