{"Name":"Congenital myasthenic syndrome 4C","DiseaseID__c":"GARD:0010108","id":10108,"encodedName":"congenital-myasthenic-syndrome-4c","IsDeleted":false,"Disease_Name_Full__c":"Congenital myasthenic syndrome 4C","Xref_IDs__c":"C174216; C1837091; DOID:0110679; MEDGEN:373251; MONDO:0012157; OMIM:608931","USA_Estimate__c":null,"No_of_Specialist_Tagsa__c":1,"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":3,"Disease_Characteristics_Score__c":4,"No_of_Age_at_Onset__c":0,"Description_Source__c":"MONDO:0012157","Disease_Description__c":"A congenital myasthenic syndrome characterized by autosomal recessive inheritance of postsynaptic neuromuscular junction defects, early-onset muscle weakness, and low amplitude of the miniature endplate potential and current that has material basis in homozygous or compound heterozygous mutation in the CHRNE gene on chromosome 17p13.","GARD_Name__c":"Congenital myasthenic syndrome 4C","GARD_Synonym__c":"cms id; cms1d; cms4c; congenital myasthenic syndrome 4c associated with acetylcholine receptor deficiency; congenital myasthenic syndrome type 4c; congenital myasthenic syndrome type id; familial infantile myasthenia 1; fim1; gfpt1-related congenital myasthenic syndrome; musk-related congenital myasthenic syndrome; myasthenic syndrome, congenital, associated with acetylcholine receptor deficiency","Curated_Disease_Description_Source__c":"PlainLanguagePilotV1-Sep23","Curated_Disease_Description__c":"Myasthenic syndrome, congenital, 4c, associated with acetylcholine receptor deficiency is a condition that affects the connection between nerves and muscles. It causes muscle weakness that starts early in life and can vary in severity. Tests show that the problem is due to a lack of a substance called AChR at the connection point between nerves and muscles. This condition is caused by genetic factors and can be inherited.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":null,"SourceID__c":"OMIM:608931","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0012157","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":"Myasthenic syndrome, congenital, 4c, associated with acetylcholine receptor deficiency is a condition that affects the connection between nerves and muscles. It causes muscle weakness that starts early in life and can vary in severity. Tests show that the problem is due to a lack of a substance called AChR at the connection point between nerves and muscles. This condition is caused by genetic factors and can be inherited.","Curated_Disease_Description_Source__c":"PlainLanguagePilotV1-Sep23","GARD_Synonym__c":"cms id; cms1d; cms4c; congenital myasthenic syndrome 4c associated with acetylcholine receptor deficiency; congenital myasthenic syndrome type 4c; congenital myasthenic syndrome type id; familial infantile myasthenia 1; fim1; gfpt1-related congenital myasthenic syndrome; musk-related congenital myasthenic syndrome; myasthenic syndrome, congenital, associated with acetylcholine receptor deficiency","Name":"Congenital myasthenic syndrome 4C","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Muscular Dystrophy Canada","Website__c":"https://muscle.ca/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Neuromuscular medicine","Tag_Category__c":"Specialist","curated_tag_name":"Neuromuscular medicine"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0010108","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1168","Source__c":"Gene Review","Xref__c":"NBK1168"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0110679","Source__c":"MONDO:0012157","Xref__c":"DOID:0110679"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C1837091","Source__c":"C1837091","Xref__c":"C1837091"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=373251","Source__c":"C1837091","Xref__c":"MEDGEN:373251"},{"URL__c":"https://www.omim.org/entry/608931","Source__c":"C1837091; MONDO:0012157","Xref__c":"OMIM:608931"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0012157","Source__c":"GARD:0010108","Xref__c":"MONDO:0012157"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C174216","Source__c":"C1837091","Xref__c":"C174216"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"CHRNE","GHR_URL__c":"https://medlineplus.gov/genetics/gene/chrne","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"GFPT1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"MUSK","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:608931","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:608931","HPO_Frequency__c":"Very frequent (80-99%)","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":"OMIM:608931","Feature__r":{"HPO_Description__c":"Multiple congenital contractures in different body areas.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002804","HPO_Synonym__c":"Arthrogryposis; Arthrogryposis multiplex; Arthrogryposis, congenital; Multiple congenital contractures","HPO_Name__c":"Arthrogryposis multiplex congenita","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","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":"OMIM:608931","Feature__r":{"HPO_Description__c":"Atrophy (wasting) affecting primary type 2 muscle fibers. This feature in general can only be observed on muscle biopsy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003554","HPO_Synonym__c":"Type 2 fiber atrophy","HPO_Name__c":"Type 2 muscle fiber atrophy","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001612","HPO_Name__c":"Weak cry","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","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:608931","Feature__r":{"HPO_Description__c":"Dental malocclusion refers to an abnormality of the occlusion, or alignment, of the teeth and the way the upper and lower teeth fit together, resulting in overcrowding of teeth or in abnormal bite patterns.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000689","HPO_Synonym__c":"Bad bite; Bilateral crossbite; Bilateral crossbite malocclusion; Incorrect relation between upper and lower dental arches; Malalignment of upper and lower dental arches; Malocclusion; Malocclusion of teeth; Misalignment of upper and lower dental arches; Occlusion anomaly","HPO_Name__c":"Dental malocclusion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","Feature__r":{"HPO_Description__c":"A reduction in the size of nerve terminals.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003443","HPO_Name__c":"Decreased size of nerve terminals","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003199","HPO_Synonym__c":"Decreased muscle mass","HPO_Name__c":"Decreased muscle mass","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","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":"OMIM:608931","Feature__r":{"HPO_Description__c":"Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000218","HPO_Synonym__c":"Elevated palate; High arched palate; High palate; High, arched palate; High-arched palate; Increased palatal height; Palate high-arched; Palate, high-arched","HPO_Name__c":"High palate","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A compound muscle action potential (CMAP) is a type of electromyography (EMG). CMAP refers to a group of almost simultaneous action potentials from several muscle fibers in the same area evoked by stimulation of the supplying motor nerve and are recorded as one multipeaked summated action potential. This abnormality refers to a greater than normal decrease in the amplitude during the course of the investigation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003403","HPO_Synonym__c":"EMG: decremental response of CMAP to repetitive nerve stimulation","HPO_Name__c":"EMG: decremental response of compound muscle action potential to repetitive nerve stimulation","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Procedure_EMG"}},{"Provided_By__c":"OMIM:608931","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A type of weakness that occurs after a muscle group is used and lessens if the muscle group has some rest. That is, there is diminution of strength with repetitive muscle actions.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003473","HPO_Synonym__c":"Fatigable weakness of limb muscles; Generalized muscle weakness due to defect at the neuromuscular junction; Myasthenia; Myasthenic weakness; Proximal muscle weakness due to defect at the neuromuscular junction","HPO_Name__c":"Fatigable weakness","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Ophthalmoplegia is a paralysis or weakness of one or more of the muscles that control eye movement.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000597","HPO_Synonym__c":"Extraocular muscle palsy; Extraocular muscle paralysis; Weakness of extraocular eye movement; Weakness of muscles controlling eye movement","HPO_Name__c":"Ophthalmoparesis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","Feature__r":{"HPO_Description__c":"An abnormal reduction in quantity or strength of fetal movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001558","HPO_Synonym__c":"Decreased fetal activity; Decreased fetal movements; Decreased movement in utero; Dminished fetal movement; Fetal hypokinesia; Less than 10 fetal movements in 12 hours; Reduced fetal movement; Reduced fetal movements","HPO_Name__c":"Decreased fetal movement","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","Feature__r":{"HPO_Description__c":"A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000486","HPO_Synonym__c":"Cross-eyed; Squint; Squint eyes","HPO_Name__c":"Strabismus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","Feature__r":{"HPO_Description__c":"Increased susceptibility to fatigue.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003388","HPO_Name__c":"Easy fatigability","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","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"}},{"Provided_By__c":"OMIM:608931","Feature__r":{"HPO_Description__c":"Abnormal prominence of the chin related to increased length of the mandible.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000303","HPO_Synonym__c":"Big lower jaw; Big mandible; Enlarged mandible; Enlargement of mandible; Hyperplasia of lower jaw; Increased projection of lower jaw; Increased projection of mandible; Increased size of lower jaw; Large lower jaw; Large mandible; Lower jaw excess; Lower jaw hyperplasia; Macromandible; Mandible prognathism; Mandibular excess; Mandibular hyperplasia; Mandibular macrognathia; Mandibular prognathism; Prognathia; Prognathism; Prominent chin; Prominent jaw; Prominent lower jaw; Prominent mandible; Relative mandibular prognathism","HPO_Name__c":"Mandibular prognathia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","Feature__r":{"HPO_Description__c":"Sudden and involuntary contractions of one or more muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003394","HPO_Synonym__c":"Muscle cramps; Muscle spasms","HPO_Name__c":"Muscle spasm","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","Feature__r":{"HPO_Description__c":"Facial height (length) is more than 2 standard deviations above the mean (objective); or, an apparent increase in the height (length) of the face (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000276","HPO_Synonym__c":"Elongation of face; Increased height of face; Increased length of face; Increased vertical dimension of face; Long face; Long facies; Vertical elongation of face; Vertical enlargement of face; Vertical excess of face; Vertical Facial Excess; Vertical hyperplasia of face; Vertical overgrowth of face","HPO_Name__c":"Long face","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","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:608931","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":"OMIM:608931","Feature__r":{"HPO_Description__c":"Impaired ability to eat related to problems gathering food and getting ready to suck, chew, or swallow it.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011968","HPO_Synonym__c":"Decreased oral intake; Feeding difficulties; Feeding problems; Poor feeding","HPO_Name__c":"Feeding difficulties","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:608931","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:608931","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002747","HPO_Synonym__c":"Decreased lung function due to weak breathing muscles; Decreased respiratory function due to muscle weakness; Respiratory distress due to muscle weakness; Respiratory failure due to muscle weakness; Respiratory muscle weakness","HPO_Name__c":"Respiratory insufficiency due to muscle weakness","Feature_System__c":"Musculoskeletal System; Respiratory system","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Specialist":["Neuromuscular medicine"]},"synonyms":["cms id"," cms1d"," cms4c"," congenital myasthenic syndrome 4c associated with acetylcholine receptor deficiency"," congenital myasthenic syndrome type 4c"," congenital myasthenic syndrome type id"," familial infantile myasthenia 1"," fim1"," gfpt1-related congenital myasthenic syndrome"," musk-related congenital myasthenic syndrome"," myasthenic syndrome, congenital, associated with acetylcholine receptor deficiency"]}