{"Name":"Klippel-Feil syndrome","DiseaseID__c":"GARD:0010280","id":10280,"encodedName":"klippel-feil-syndrome","IsDeleted":false,"Disease_Name_Full__c":"Klippel-Feil syndrome","Xref_IDs__c":"5601008; C0022738; C98967; D007714; DOID:10426; MEDGEN:9645; MONDO:0001029; OMIMPS:118100; ORPHA:2345; Q76.1","USA_Estimate__c":"5,000","No_of_Specialist_Tagsa__c":4,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":1,"World_Estimate__c":"8,000 to 80,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":1,"No_of_Disease_Descriptions__c":5,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":3,"Description_Source__c":"MONDO:0001029","Disease_Description__c":"A congenital, musculoskeletal condition characterized by the fusion of at least two vertebrae of the neck. Common symptoms include a short neck, low hairline at the back of the head, and restricted mobility of the upper spine. This syndrome can cause chronic headaches as well as pain in both the neck and the back.Other features may involve various other body parts or systems. Sometimes, KFS occurs as a feature of another disorder or syndrome, such as Wildervanck syndrome or hemifacial microsomia. In these cases, people have the features of both KFS and the additional disorder. KFS may be caused by mutations in the GDF6 or GDF3 gene and inherited in an autosomal dominant manner; or, it may be caused by mutations in the MEOX1 gene and inherited in an autosomal recessive manner. Treatment is symptomatic and may include medications, surgery, and/or physical therapy.","GARD_Name__c":"Klippel-Feil syndrome","GARD_Synonym__c":"cervical c2/c3 vertebral fusion; cervical fusion syndrome; cervical vertebral fusion; cervical vertebral fusion autosomal dominant; cervical vertebral fusion autosomal recessive; cervical vertebral fusion syndrome; fusion of cervical vertebrae c2-3; isolated klippel-feil syndrome; kfs - klippel-feil syndrome; klippel feil syndrome autosomal dominant; klippel-feil anomaly; klippel-feil deformity; klippel-feil sequence","Curated_Disease_Description_Source__c":"GARD:0010280","Curated_Disease_Description__c":"Klippel-Feil syndrome is a bone disorder that is characterized by the abnormal joining (fusion) of two or more spinal bones in the neck (cervical vertebrae). The vertebral fusion is present from birth. Cases of Klippel-Feil syndrome may be classified using the Samartzis classification system. This system divides the condition into three types based on the number of fused vertebrae and whether the fused vertebrae are next to each other (contiguous). According to the Samartzis classification, type I involves a single fusion of two vertebrae, type II involves multiple fused vertebrae that are not contiguous, and type III involves multiple fused vertebrae that are contiguous. Klippel-Feil syndrome has been described as having three classic features: a short neck, the appearance of a low hairline at the back of the head, and a limited range of motion in the neck. However, less than half of the individuals who have been diagnosed with Klippel-Feil syndrome have all three features. People with Klippel-Feil syndrome may have additional signs and symptoms, and these can vary greatly among affected individuals. Some people with Klippel-Feil syndrome do not have any signs or symptoms. The fused vertebrae in people with Klippel-Feil syndrome can cause health problems. These include chronic headaches; muscle pain; and an involuntary tensing of the neck, which causes the head to tilt or turn (torticollis). Because some of the cervical vertebrae are fused, this region of the neck can become unstable, which increases the risk of damage to the spinal cord. The fused area of the spine may be more susceptible to trauma, such as a fall or car accident.  Some individuals with Klippel-Feil syndrome have a narrowing of the spinal canal (spinal stenosis) in the neck, which can put pressure on the spinal cord and nerves. This may be more common in those with Klippel-Feil syndrome type III. People with Klippel-Feil syndrome may have additional skeletal features, such as rib abnormalities or an abnormal side-to-side curvature of the spine (scoliosis). Approximately 20 to 30 percent of affected individuals have a skeletal condition called Sprengel deformity, in which the shoulder blades are underdeveloped and sit abnormally high on the back. Additional signs and symptoms seen in people with Klippel-Feil syndrome may include a difference in the size and shape of the right and left sides of the face (facial asymmetry), hearing loss, eye abnormalities, or an opening in the roof of the mouth (cleft palate). Abnormalities of the heart or kidneys may also be present.  Some people with Klippel-Feil syndrome have neurological issues, which can include a type of birth defect that occurs during the development of the brain and spinal cord (neural tube defect) and a condition in which intentional movements of one side of the body are mirrored by involuntary movements of the other side (synkinesia). Klippel-Feil syndrome may occur as a feature of other disorders, such as Wildervanck syndrome or hemifacial microsomia. In these instances, affected individuals have the signs and symptoms of both Klippel-Feil syndrome and the additional disorder.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"5,000","Age_at_Onset_Snippet_Text__c":"during Pregnancy, at Birth, and as an Infant","SourceID__c":"ORPHA:2345","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0001029","ORPHANET_ID__c":"ORPHA:2345","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de klippel-feil aislado","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"síndrome de klippel-feil aislado","Spanish_GARD_Synonym__c":"fusión congénita de los segmentos cervicales; fusión vertebral cervical congénita; malformación de klippel-feil; secuencia de klippel-feil","Category_Linearization__c":"ORPHA:93890","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":"Klippel-Feil syndrome is a bone disorder that is characterized by the abnormal joining (fusion) of two or more spinal bones in the neck (cervical vertebrae). The vertebral fusion is present from birth. Cases of Klippel-Feil syndrome may be classified using the Samartzis classification system. This system divides the condition into three types based on the number of fused vertebrae and whether the fused vertebrae are next to each other (contiguous). According to the Samartzis classification, type I involves a single fusion of two vertebrae, type II involves multiple fused vertebrae that are not contiguous, and type III involves multiple fused vertebrae that are contiguous. Klippel-Feil syndrome has been described as having three classic features: a short neck, the appearance of a low hairline at the back of the head, and a limited range of motion in the neck. However, less than half of the individuals who have been diagnosed with Klippel-Feil syndrome have all three features. People with Klippel-Feil syndrome may have additional signs and symptoms, and these can vary greatly among affected individuals. Some people with Klippel-Feil syndrome do not have any signs or symptoms. The fused vertebrae in people with Klippel-Feil syndrome can cause health problems. These include chronic headaches; muscle pain; and an involuntary tensing of the neck, which causes the head to tilt or turn (torticollis). Because some of the cervical vertebrae are fused, this region of the neck can become unstable, which increases the risk of damage to the spinal cord. The fused area of the spine may be more susceptible to trauma, such as a fall or car accident.  Some individuals with Klippel-Feil syndrome have a narrowing of the spinal canal (spinal stenosis) in the neck, which can put pressure on the spinal cord and nerves. This may be more common in those with Klippel-Feil syndrome type III. People with Klippel-Feil syndrome may have additional skeletal features, such as rib abnormalities or an abnormal side-to-side curvature of the spine (scoliosis). Approximately 20 to 30 percent of affected individuals have a skeletal condition called Sprengel deformity, in which the shoulder blades are underdeveloped and sit abnormally high on the back. Additional signs and symptoms seen in people with Klippel-Feil syndrome may include a difference in the size and shape of the right and left sides of the face (facial asymmetry), hearing loss, eye abnormalities, or an opening in the roof of the mouth (cleft palate). Abnormalities of the heart or kidneys may also be present.  Some people with Klippel-Feil syndrome have neurological issues, which can include a type of birth defect that occurs during the development of the brain and spinal cord (neural tube defect) and a condition in which intentional movements of one side of the body are mirrored by involuntary movements of the other side (synkinesia). Klippel-Feil syndrome may occur as a feature of other disorders, such as Wildervanck syndrome or hemifacial microsomia. In these instances, affected individuals have the signs and symptoms of both Klippel-Feil syndrome and the additional disorder.","Curated_Disease_Description_Source__c":"GARD:0010280","GARD_Synonym__c":"cervical c2/c3 vertebral fusion; cervical fusion syndrome; cervical vertebral fusion; cervical vertebral fusion autosomal dominant; cervical vertebral fusion autosomal recessive; cervical vertebral fusion syndrome; fusion of cervical vertebrae c2-3; isolated klippel-feil syndrome; kfs - klippel-feil syndrome; klippel feil syndrome autosomal dominant; klippel-feil anomaly; klippel-feil deformity; klippel-feil sequence","Name":"Klippel-Feil syndrome","Curated_USA_Estimate__c":"5,000","estimateUsa":"5,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Child Neurology Foundation","Website__c":"https://www.childneurologyfoundation.org/"},{"Account_Name__c":"Alianza Iberoamericana de Enfermedades Raras o Poco Frecuentes","Website__c":"https://aliber.org/web/"},{"Account_Name__c":"Federación Mexicana de Enfermedades Raras (FEMEXER)","Website__c":"http://www.femexer.org/"},{"Account_Name__c":"Federación Española de Enfermedades Raras","Website__c":"https://enfermedades-raras.org/"},{"Account_Name__c":"Federación Colombiana de Enfermedades Raras","Website__c":"http://www.fecoer.org"},{"Account_Name__c":"Federación Argentina de Enfermedades Poco Frecuentes","Website__c":"https://fadepof.org.ar/"},{"Account_Name__c":"Asociación Todos Unidos Enfermedades Raras Uruguay","Website__c":"https://atueru.org.uy/"},{"Account_Name__c":"American Chronic Pain Association","Website__c":"https://www.acpanow.com/"}],"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":"Gastroenterology","Tag_Category__c":"Disease Category;Specialist","category_description":"Gastrointestinal diseases, or digestive diseases, affect the esophagus, stomach, small intestine, large intestine, liver, gallbladder, or pancreas.","curated_tag_name":"Gastrointestinal diseases"},{"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":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Infancy","Provided_By__c":"ORPHA:2345"},{"Age_At_Onset__c":"Neonatal","Provided_By__c":"ORPHA:2345"},{"Age_At_Onset__c":"Antenatal","Provided_By__c":"ORPHA:2345"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0010280","Source__c":"RareSource"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C98967","Source__c":"C0022738; MONDO:0001029","Xref__c":"C98967"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0022738","Source__c":"C0022738","Xref__c":"C0022738"},{"URL__c":"http://purl.bioontology.org/ontology/ICD10CM/Q76.1","Source__c":"MONDO:0001029","Xref__c":"Q76.1"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=9645","Source__c":"C0022738","Xref__c":"MEDGEN:9645"},{"URL__c":"https://www.orpha.net/en/disease/detail/2345","Source__c":"MONDO:0001029","Xref__c":"ORPHA:2345"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A10426","Source__c":"MONDO:0001029","Xref__c":"DOID:10426"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C007714","Source__c":"C0022738; MONDO:0001029","Xref__c":"D007714"},{"URL__c":"https://www.omim.org/phenotypicSeries/PS118100","Source__c":"MONDO:0001029","Xref__c":"OMIMPS:118100"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=5601008","Source__c":"C0022738; MONDO:0001029","Xref__c":"5601008"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0001029","Source__c":"GARD:0010280","Xref__c":"MONDO:0001029"},{"URL__c":"https://hpo.jax.org/browse/term/HP:0004602","Source__c":"C0022738","Xref__c":"HP:0004602"},{"URL__c":"https://medlineplus.gov/genetics/condition/klippel-feil-syndrome","Source__c":"GARD:0010280","Xref__c":"https://medlineplus.gov/genetics/condition/klippel-feil-syndrome"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"GDF6","GHR_URL__c":"https://medlineplus.gov/genetics/gene/gdf6","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"MEOX1","GHR_URL__c":"https://medlineplus.gov/genetics/gene/meox1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true},{"GeneSymbol__c":"GDF3","GHR_URL__c":"https://medlineplus.gov/genetics/gene/gdf3","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant","Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The presence of any abnormality of the genitourinary system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000119","HPO_Synonym__c":"Abnormality of the GU system; Genitourinary abnormality; Genitourinary tract anomalies; Genitourinary tract malformation; Urogenital abnormalities; Urogenital anomalies","HPO_Name__c":"Abnormality of the genitourinary system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Any structural anomaly of the heart and blood vessels.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030680","HPO_Synonym__c":"Abnormality of cardiovascular system morphology; Cardiovascular malformations","HPO_Name__c":"Abnormal cardiovascular system morphology","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An unpleasant sensation characterized by physical discomfort (such as pricking, throbbing, or aching) localized to the neck.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0030833","HPO_Synonym__c":"Neck pain","HPO_Name__c":"Neck pain","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Cleft palate is a developmental defect of the palate resulting from a failure of fusion of the palatine processes and manifesting as a separation of the roof of the mouth (soft and hard palate).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000175","HPO_Synonym__c":"Cleft hard and soft palate; Cleft of hard and soft palate; Cleft of palate; Cleft palate; Cleft roof of mouth; Palatoschisis; Uranostaphyloschisis","HPO_Name__c":"Cleft palate","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The closed form of spina bifida with incomplete closure of a vertebral body with intact overlying skin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003298","HPO_Synonym__c":"Hidden spina bifida","HPO_Name__c":"Spina bifida occulta","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormal difference between the left and right sides of the face.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000324","HPO_Synonym__c":"Asymmetric facies; Asymmetry of face; Asymmetry of right and left side of face; Crooked face; Facial asymmetry; Unsymmetrical face","HPO_Name__c":"Facial asymmetry","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A congenital skeletal deformity characterized by the elevation of one scapula (thus, one scapula is located superior to the other).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000912","HPO_Synonym__c":"Congenital, upward displacement of the scapula; High scapula; High shoulder blade; Sprengel deformity","HPO_Name__c":"Sprengel anomaly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A congenital form of torticollis resulting from shortening of the sternocleidomastoid muscle and leading to a limited range of motion in both rotation and lateral bending.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005988","HPO_Synonym__c":"Torticollis, congenital","HPO_Name__c":"Congenital muscular torticollis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Structural abnormality affecting one or more of the cranial nerves, which emerge directly from the brain stem.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001291","HPO_Synonym__c":"Abnormality of cranial nerve; Abnormality of the cranial nerves; Cranial nerve disease; Cranial nerve involvement","HPO_Name__c":"Abnormal cranial nerve morphology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hair on the neck extends more inferiorly than usual.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002162","HPO_Synonym__c":"Low hairline at back of neck; Low posterior hair line","HPO_Name__c":"Low posterior hairline","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Any abnormality of the vertebral column.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000925","HPO_Synonym__c":"Abnormal spine; Abnormal vertebral column; Abnormality of the spine; Abnormality of the vertebral column","HPO_Name__c":"Abnormality of the vertebral column","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","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:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Congenital absence of the anus, i.e., the opening at the bottom end of the intestinal tract.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002023","HPO_Synonym__c":"Absent anus","HPO_Name__c":"Anal atresia","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal displacement or malposition of the anus.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004397","HPO_Synonym__c":"Abnormal anus position; Anus malposition","HPO_Name__c":"Ectopic anus","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Fusion of cervical vertebrae at C2 and C3, caused by a failure in the normal segmentation or division of the cervical vertebrae during the early weeks of fetal development, leading to a short neck with a low hairline at the back of the head, and restricted mobility of the upper spine.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004602","HPO_Synonym__c":"Fusion of cervical vertebrae c2-3; Klippel-Feil anomaly; Klippel-Feil syndrome","HPO_Name__c":"Cervical C2/C3 vertebral fusion","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Unintentional movement in one area of the body produced during intentional movement of another area of the body.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0034980","HPO_Name__c":"Synkinesis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormal narrowing of the spinal canal.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003416","HPO_Synonym__c":"Narrow spinal canal; Spinal stenosis","HPO_Name__c":"Spinal canal stenosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Diminished length of the neck.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000470","HPO_Synonym__c":"Decreased length of neck; Short neck","HPO_Name__c":"Short neck","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","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:2345","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005640","HPO_Name__c":"Abnormal vertebral segmentation and fusion","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A hole between the two bottom chambers (ventricles) of the heart. The defect is centered around the most superior aspect of the ventricular septum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001629","HPO_Synonym__c":"Hole in heart wall separating two lower heart chambers; Ventricular septal defects; Ventriculoseptal defect; VSD","HPO_Name__c":"Ventricular septal defect","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Cephalgia, or pain sensed in various parts of the head, not confined to the area of distribution of any nerve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002315","HPO_Synonym__c":"Headache; Headaches","HPO_Name__c":"Headache","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Loss of strength in the arm, leg, and sometimes face on one side of the body. Hemiplegia refers to a severe or complete loss of strength, whereas hemiparesis refers to a relatively mild loss of strength.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004374","HPO_Synonym__c":"Paralysis or weakness of one side of body","HPO_Name__c":"Hemiplegia/hemiparesis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005986","HPO_Synonym__c":"Limitation of neck motion; Restricted neck movement","HPO_Name__c":"Limitation of neck motion","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of the sacral bone.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005107","HPO_Synonym__c":"Abnormality of the sacrum","HPO_Name__c":"Abnormal sacrum morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Absence or underdevelopment of the kidney.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008678","HPO_Synonym__c":"Absent/small kidney; Absent/underdeveloped kidney; Renal agenesis/hypoplasia; Renal aplasia/hypoplasia","HPO_Name__c":"Renal hypoplasia/aplasia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A developmental defect in which a kidney is located in an abnormal anatomic position.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000086","HPO_Synonym__c":"Abnormal kidney location; Displaced kidney; Ectopic kidneys; Renal ectopia","HPO_Name__c":"Ectopic kidney","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of the shoulder, which is defined as the structures surrounding the shoulder joint where the humerus attaches to the scapula.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003043","HPO_Synonym__c":"Abnormality of the shoulder","HPO_Name__c":"Abnormal shoulder morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Pterygium colli is a congenital skin fold that runs along the sides of the neck down to the shoulders. It involves an ectopic fibrotic facial band superficial to the trapezius muscle. Excess hair-bearing skin is also present and extends down the cervical region well beyond the normal hairline.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000465","HPO_Synonym__c":"Neck webbing; Pterygium colli; Webbed neck","HPO_Name__c":"Webbed neck","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal cognition is characterized by deficits in thinking, reasoning, or remembering.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100543","HPO_Synonym__c":"Abnormality of cognition; Cognitive abnormality; Cognitive defects; Cognitive deficits; Cognitive impairment; Intellectual impairment","HPO_Name__c":"Cognitive impairment","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:2345","HPO_Frequency__c":"Frequent (30-79%)","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:2345","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Incomplete closure of the embryonic neural tube, whereby some vertebral arches remain unfused and open. The mildest form is spina bifida occulta, followed by meningocele and meningomyelocele.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002414","HPO_Name__c":"Spina bifida","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Gastroenterology","Congenital Abnormality"],"Specialist":["Genetics","Gastroenterology","Orthopedics","Pediatrics"]},"synonyms":["cervical c2/c3 vertebral fusion"," cervical fusion syndrome"," cervical vertebral fusion"," cervical vertebral fusion autosomal dominant"," cervical vertebral fusion autosomal recessive"," cervical vertebral fusion syndrome"," fusion of cervical vertebrae c2-3"," isolated klippel-feil syndrome"," kfs - klippel-feil syndrome"," klippel feil syndrome autosomal dominant"," klippel-feil anomaly"," klippel-feil deformity"," klippel-feil sequence"],"spanishId":13340,"spanishName":"sindrome-de-klippel-feil"}