{"Name":"Rigid spine syndrome","DiseaseID__c":"GARD:0004723","id":4723,"encodedName":"rigid-spine-syndrome","IsDeleted":false,"Disease_Name_Full__c":"Rigid spine syndrome","Xref_IDs__c":"C535683; CN293569; MEDGEN:976241; MONDO:0019951; ORPHA:97244","USA_Estimate__c":null,"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":null,"No_of_HRSA_records__c":0,"Evidence_Based_Score__c":0,"No_of_Disease_Descriptions__c":3,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":2,"Description_Source__c":"MONDO:0019951","Disease_Description__c":"Rigid spine syndrome (RSS) is a slowly progressive childhood-onset congenital muscular dystrophy (see this term) characterized by contractures of the spinal extensor muscles associated with abnormal posture (limitation of neck and trunk flexure), progressive scoliosis of the spine, early marked cervico-axial muscle weakness with relatively preserved strength and function of the extremities and progressive respiratory insufficiency.","GARD_Name__c":"Rigid spine syndrome","GARD_Synonym__c":"rigid spine congenital muscular dystrophy; rss","Curated_Disease_Description_Source__c":"MONDO:0019951","Curated_Disease_Description__c":"Rigid spine muscular dystrophy (RSMD) is a form of congenital muscular dystrophy. Disorders in this group cause muscle weakness and wasting (atrophy) beginning very early in life. In particular, RSMD involves weakness of the muscles of the torso and neck (axial muscles). Other characteristic features include spine stiffness and serious breathing problems. In RSMD, muscle weakness is often apparent at birth or within the first few months of life. Affected infants can have poor head control and weak muscle tone (hypotonia), which may delay the development of motor skills such as crawling or walking. Over time, muscles surrounding the spine atrophy, and the joints of the spine develop deformities called contractures that restrict movement. The neck and back become stiff and rigid, and affected children have limited ability to move their heads up and down or side to side. Affected children eventually develop an abnormal curvature of the spine (scoliosis). In some people with RSMD, muscles in the inner thighs also atrophy, although it does not impair the ability to walk. A characteristic feature of RSMD is breathing difficulty (respiratory insufficiency) due to restricted movement of the torso and weakness of the diaphragm, which is the muscle that separates the abdomen from the chest cavity. The breathing problems, which tend to occur only at night, can be life-threatening. Many affected individuals require a machine to help them breathe (mechanical ventilation) during sleep. The combination of features characteristic of RSMD, particularly axial muscle weakness, spine rigidity, and respiratory insufficiency, is sometimes referred to as rigid spine syndrome. While these features occur on their own in RSMD, they can also occur along with additional signs and symptoms in other muscle disorders. The features of rigid spine syndrome typically appear at a younger age in people with RSMD than in those with other muscle disorders.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":"as a Newborn and as an Infant","SourceID__c":"ORPHA:97244","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0019951","ORPHANET_ID__c":"ORPHA:97244","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de columna rígida","Spanish_Description_Source__c":"ORPHA:97244","Spanish_Description__c":"Es una distrofia muscular congénita de aparición en la infancia lentamente progresiva caracterizada por contracturas de los músculos extensores de la columna asociadas con una postura anómala (limitación de la flexión del cuello y el tronco), escoliosis progresiva de la columna, debilidad de los músculos cervico-axiales con fuerza y ​​función relativamente conservadas de las extremidades e insuficiencia respiratoria progresiva.","Spanish_Disease_Name__c":"síndrome de columna rígida","Spanish_GARD_Synonym__c":null,"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":"Rigid spine muscular dystrophy (RSMD) is a form of congenital muscular dystrophy. Disorders in this group cause muscle weakness and wasting (atrophy) beginning very early in life. In particular, RSMD involves weakness of the muscles of the torso and neck (axial muscles). Other characteristic features include spine stiffness and serious breathing problems. In RSMD, muscle weakness is often apparent at birth or within the first few months of life. Affected infants can have poor head control and weak muscle tone (hypotonia), which may delay the development of motor skills such as crawling or walking. Over time, muscles surrounding the spine atrophy, and the joints of the spine develop deformities called contractures that restrict movement. The neck and back become stiff and rigid, and affected children have limited ability to move their heads up and down or side to side. Affected children eventually develop an abnormal curvature of the spine (scoliosis). In some people with RSMD, muscles in the inner thighs also atrophy, although it does not impair the ability to walk. A characteristic feature of RSMD is breathing difficulty (respiratory insufficiency) due to restricted movement of the torso and weakness of the diaphragm, which is the muscle that separates the abdomen from the chest cavity. The breathing problems, which tend to occur only at night, can be life-threatening. Many affected individuals require a machine to help them breathe (mechanical ventilation) during sleep. The combination of features characteristic of RSMD, particularly axial muscle weakness, spine rigidity, and respiratory insufficiency, is sometimes referred to as rigid spine syndrome. While these features occur on their own in RSMD, they can also occur along with additional signs and symptoms in other muscle disorders. The features of rigid spine syndrome typically appear at a younger age in people with RSMD than in those with other muscle disorders.","Curated_Disease_Description_Source__c":"MONDO:0019951","GARD_Synonym__c":"rigid spine congenital muscular dystrophy; rss","Name":"Rigid spine syndrome","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Muscular Dystrophy Canada","Website__c":"https://muscle.ca/"},{"Account_Name__c":"Cure CMD - Congenital Muscular Dystrophy","Website__c":"https://www.curecmd.org/"},{"Account_Name__c":"Muscular Dystrophy Association","Website__c":"https://www.mda.org"},{"Account_Name__c":"Muscular Dystrophy UK","Website__c":"https://www.musculardystrophyuk.org/"},{"Account_Name__c":"Muscular Dystrophy Foundation Australia","Website__c":"https://mdaustralia.org.au/"}],"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":"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:97244"},{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:97244"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0004723","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C535683","Source__c":"MONDO:0019951","Xref__c":"C535683"},{"URL__c":"https://www.orpha.net/en/disease/detail/97244","Source__c":"CN293569; MONDO:0019951","Xref__c":"ORPHA:97244"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=976241","Source__c":"CN293569","Xref__c":"MEDGEN:976241"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/CN293569","Source__c":"CN293569","Xref__c":"CN293569"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0019951","Source__c":"GARD:0004723","Xref__c":"MONDO:0019951"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"SELENON","GHR_URL__c":"https://medlineplus.gov/genetics/gene/selenon","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"ACTA1","GHR_URL__c":"https://medlineplus.gov/genetics/gene/acta1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Occasional (5-29%)","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":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormally increased curvature (anterior concavity) of the lumbar or cervical spine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003307","HPO_Synonym__c":"Lordosis; Prominent swayback","HPO_Name__c":"Hyperlordosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduced ability to move the vertebral column with a resulting limitation of neck and trunk flexion.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003306","HPO_Synonym__c":"Reduced spine movement; Rigid spine","HPO_Name__c":"Spinal rigidity","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Occasional (5-29%)","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":"ORPHA:97244","HPO_Frequency__c":"Occasional (5-29%)","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":"ORPHA:97244","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":"ORPHA:97244","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002093","HPO_Synonym__c":"Respiratory impairment","HPO_Name__c":"Respiratory insufficiency","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003089","HPO_Synonym__c":"Hamstring contractures","HPO_Name__c":"Hamstring contractures","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","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":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Any anomaly measure by pulmonary function testing, which includes spirometry, measures of diffusing capacity, and plethysmography.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030878","HPO_Synonym__c":"Abnormal pulmonary function test","HPO_Name__c":"Abnormality on pulmonary function testing","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Procedure_PFT"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Lack of full passive range of motion (restrictions in flexion, extension, or other movements) of the hip joint resulting from structural changes of non-bony tissues, such as muscles, tendons, ligaments, joint capsules and/or skin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003273","HPO_Synonym__c":"Flexion contracture of hips; Flexion contractures of hips; Hip contractures; Hip flexion contractures","HPO_Name__c":"Hip contracture","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Difficulty to maintain correct position of the head while standing or sitting. Infant head lag is observed when the head seems to flop around or lags posteriorly behind the trunk. Several articles have maintained that head lag should be absent by age 3 to 4 months.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002421","HPO_Synonym__c":"Delay in head control; Delay in head righting; Infant head lag; Poor head control","HPO_Name__c":"Poor head control","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Inflammation of any part of the lung parenchyma.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002090","HPO_Synonym__c":"Pneumonia","HPO_Name__c":"Pneumonia","Feature_System__c":"Respiratory system; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Reduction of neurologic reflexes such as the knee-jerk reaction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001265","HPO_Synonym__c":"Decreased reflex response; Decreased reflexes","HPO_Name__c":"Hyporeflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Very frequent (80-99%)","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":"ORPHA:97244","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The presence of an abnormal lateral curvature of the spine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002650","HPO_Name__c":"Scoliosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An elbow contracture that limits the ability of the elbow joint to be extended (straightened), meaning that the elbow is fixed in an flexed (bent) position.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002987","HPO_Synonym__c":"Elbow flexion contractures; Elbow flexion deformity; Fixed flexion at the elbow joint","HPO_Name__c":"Elbow flexion contracture","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Any anomaly of the progression of electrical impulses through the heart.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0031546","HPO_Synonym__c":"Abnormality of cardiac conduction; Abnormality of cardiac conduction system; Cardiac conduction abnormalities; Cardiac conduction defects; Heart conduction disorder","HPO_Name__c":"Cardiac conduction abnormality","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Decreased strength of the neck musculature.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000467","HPO_Synonym__c":"Floppy neck; Neck muscle weakness","HPO_Name__c":"Neck muscle weakness","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:97244","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of the form, structure, or size of the skeletal system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011842","HPO_Synonym__c":"Abnormality of skeletal morphology; Abnormally shaped skeletal","HPO_Name__c":"Abnormal skeletal morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Neurology","Muscular Dystrophy"],"Specialist":["Genetics","Neurology","Neuromuscular medicine","Pediatrics"],"Account":["Muscular Dystrophy"]},"synonyms":["rigid spine congenital muscular dystrophy"," rss"]}