{"Name":"Marfan syndrome","DiseaseID__c":"GARD:0016535","id":16535,"encodedName":"marfan-syndrome","IsDeleted":false,"Disease_Name_Full__c":"Marfan syndrome","Xref_IDs__c":"19346006; C0024796; C34807; D008382; DOID:14323; MEDGEN:44287; MONDO:0007947; OMIM:154700; ORPHA:558; Q87.4","USA_Estimate__c":"200,000","No_of_Specialist_Tagsa__c":7,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":5,"World_Estimate__c":"800,000 to 5,000,000","No_of_HRSA_records__c":0,"Evidence_Based_Score__c":5,"No_of_Disease_Descriptions__c":4,"Disease_Characteristics_Score__c":7,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0007947","Disease_Description__c":"A disorder of the connective tissue. Connective tissue provides strength and flexibility to structures throughout the body such as bones, ligaments, muscles, walls of blood vessels, and heart valves. Marfan syndrome affects most organs and tissues, especially the skeleton, lungs, eyes, heart, and the large blood vessel that distributes blood from the heart to the rest of the body (the aorta). It is caused by mutations in the FBN1 gene, which provides instructions for making a protein called fibrillin-1. Marfan syndrome is inherited in an autosomal dominant pattern. At least 25% of cases are due to a new (de novo) mutation. Treatment is based on the signs and symptoms in each person.","GARD_Name__c":"Marfan syndrome","GARD_Synonym__c":"fbn1-related thoracic aortic aneurysms and aortic dissections; marfan syndrome type 1; marfan syndrome, classic; marfan syndrome, type 1; marfan syndrome, type i; marfan's disease; marfan's syndrome; mfs; mfs1","Curated_Disease_Description_Source__c":"MONDO:0007947","Curated_Disease_Description__c":"Marfan syndrome is a disorder that affects the connective tissue in many parts of the body. Connective tissue provides strength and flexibility to structures such as bones, ligaments, muscles, blood vessels, and heart valves. The signs and symptoms of Marfan syndrome vary widely in severity, timing of onset, and rate of progression. Because connective tissue is found throughout the body, Marfan syndrome can affect many systems, often causing abnormalities in the heart, blood vessels, eyes, bones, and joints. The two primary features of Marfan syndrome are vision problems caused by a dislocated lens (ectopia lentis) in one or both eyes and defects in the large blood vessel that distributes blood from the heart to the rest of the body (the aorta). The aorta can weaken and stretch, which may lead to a bulge in the blood vessel wall (an aneurysm). Stretching of the aorta may cause the aortic valve to leak, which can lead to a sudden tearing of the layers in the aorta wall (aortic dissection). Aortic aneurysm and dissection can be life threatening. Many people with Marfan syndrome have additional heart problems including a leak in the valve that connects two of the four chambers of the heart (mitral valve prolapse) or the valve that regulates blood flow from the heart into the aorta (aortic valve regurgitation). Leaks in these valves can cause shortness of breath, fatigue, and an irregular heartbeat felt as skipped or extra beats (palpitations). Individuals with Marfan syndrome are usually tall and slender, have elongated fingers and toes (arachnodactyly), loose joints, and have an arm span that exceeds their body height. Other common features include a long and narrow face, crowded teeth, an abnormal curvature of the spine (scoliosis or kyphosis), stretch marks (striae) not related to weight gain or loss, and either a sunken chest (pectus excavatum) or a protruding chest (pectus carinatum). Some individuals develop an abnormal accumulation of air in the chest cavity that can result in the collapse of a lung (spontaneous pneumothorax). A membrane called the dura, which surrounds the brain and spinal cord, can be abnormally enlarged (dural ectasia) in people with Marfan syndrome. Dural ectasia can cause pain in the back, abdomen, legs, or head. Most individuals with Marfan syndrome have some degree of nearsightedness (myopia). Clouding of the lens (cataract) may occur in mid-adulthood, and increased pressure within the eye (glaucoma) occurs more frequently in people with Marfan syndrome than in those without the condition. The features of Marfan syndrome can become apparent anytime between infancy and adulthood. Depending on the onset and severity of signs and symptoms, Marfan syndrome can be fatal early in life; however, with proper treatment, many affected individuals have normal lifespans.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":"200,000","Age_at_Onset_Snippet_Text__c":"at any time in life","SourceID__c":"ORPHA:558","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Grouping","MONDO_ID__c":"MONDO:0007947","ORPHANET_ID__c":"ORPHA:284963; ORPHA:558","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Síndrome de marfan","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"síndrome de marfan","Spanish_GARD_Synonym__c":"mfs","Category_Linearization__c":"ORPHA:98023","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":"Marfan syndrome is a disorder that affects the connective tissue in many parts of the body. Connective tissue provides strength and flexibility to structures such as bones, ligaments, muscles, blood vessels, and heart valves. The signs and symptoms of Marfan syndrome vary widely in severity, timing of onset, and rate of progression. Because connective tissue is found throughout the body, Marfan syndrome can affect many systems, often causing abnormalities in the heart, blood vessels, eyes, bones, and joints. The two primary features of Marfan syndrome are vision problems caused by a dislocated lens (ectopia lentis) in one or both eyes and defects in the large blood vessel that distributes blood from the heart to the rest of the body (the aorta). The aorta can weaken and stretch, which may lead to a bulge in the blood vessel wall (an aneurysm). Stretching of the aorta may cause the aortic valve to leak, which can lead to a sudden tearing of the layers in the aorta wall (aortic dissection). Aortic aneurysm and dissection can be life threatening. Many people with Marfan syndrome have additional heart problems including a leak in the valve that connects two of the four chambers of the heart (mitral valve prolapse) or the valve that regulates blood flow from the heart into the aorta (aortic valve regurgitation). Leaks in these valves can cause shortness of breath, fatigue, and an irregular heartbeat felt as skipped or extra beats (palpitations). Individuals with Marfan syndrome are usually tall and slender, have elongated fingers and toes (arachnodactyly), loose joints, and have an arm span that exceeds their body height. Other common features include a long and narrow face, crowded teeth, an abnormal curvature of the spine (scoliosis or kyphosis), stretch marks (striae) not related to weight gain or loss, and either a sunken chest (pectus excavatum) or a protruding chest (pectus carinatum). Some individuals develop an abnormal accumulation of air in the chest cavity that can result in the collapse of a lung (spontaneous pneumothorax). A membrane called the dura, which surrounds the brain and spinal cord, can be abnormally enlarged (dural ectasia) in people with Marfan syndrome. Dural ectasia can cause pain in the back, abdomen, legs, or head. Most individuals with Marfan syndrome have some degree of nearsightedness (myopia). Clouding of the lens (cataract) may occur in mid-adulthood, and increased pressure within the eye (glaucoma) occurs more frequently in people with Marfan syndrome than in those without the condition. The features of Marfan syndrome can become apparent anytime between infancy and adulthood. Depending on the onset and severity of signs and symptoms, Marfan syndrome can be fatal early in life; however, with proper treatment, many affected individuals have normal lifespans.","Curated_Disease_Description_Source__c":"MONDO:0007947","GARD_Synonym__c":"fbn1-related thoracic aortic aneurysms and aortic dissections; marfan syndrome type 1; marfan syndrome, classic; marfan syndrome, type 1; marfan syndrome, type i; marfan's disease; marfan's syndrome; mfs; mfs1","Name":"Marfan syndrome","Curated_USA_Estimate__c":"200,000","estimateUsa":"200,000"}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Marfan World","Website__c":"https://www.marfanworld.org/"},{"Account_Name__c":"The Marfan Foundation","Website__c":"https://www.marfan.org/home"},{"Account_Name__c":"Smart Patients","Website__c":"https://www.smartpatients.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":"Ophthalmology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Rheumatology","Tag_Category__c":"Specialist"},{"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":"Anterior segment of Eye","Tag_Category__c":"Specialist","curated_tag_name":"Front part of eye disease"},{"Tag_Name__c":"Vascular Medicine","Tag_Category__c":"Specialist","curated_tag_name":"Vascular diseases"},{"Tag_Name__c":"Pediatrics","Tag_Category__c":"Specialist"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"All ages","Provided_By__c":"ORPHA:558"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK1335","Source__c":"Gene Review","Xref__c":"NBK1335"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=19346006","Source__c":"C0024796; MONDO:0007947","Xref__c":"19346006"},{"URL__c":"https://www.omim.org/entry/154700","Source__c":"C0024796; MONDO:0007947","Xref__c":"OMIM:154700"},{"URL__c":"https://www.orpha.net/en/disease/detail/558","Source__c":"C0024796; MONDO:0007947; ORPHA:558","Xref__c":"ORPHA:558"},{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C008382","Source__c":"C0024796; MONDO:0007947","Xref__c":"D008382"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C34807","Source__c":"C0024796; MONDO:0007947","Xref__c":"C34807"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A14323","Source__c":"MONDO:0007947","Xref__c":"DOID:14323"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=44287","Source__c":"C0024796","Xref__c":"MEDGEN:44287"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0024796","Source__c":"C0024796","Xref__c":"C0024796"},{"URL__c":"http://purl.bioontology.org/ontology/ICD10CM/Q87.4","Source__c":"MONDO:0007947","Xref__c":"Q87.4"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0007947","Source__c":"GARD:0016535","Xref__c":"MONDO:0007947"},{"URL__c":"https://medlineplus.gov/genetics/condition/marfan-syndrome","Source__c":"GARD:0016535","Xref__c":"https://medlineplus.gov/genetics/condition/marfan-syndrome"},{"URL__c":"https://www.nhlbi.nih.gov/health/marfan-syndrome"},{"URL__c":"https://www.niams.nih.gov/health-topics/marfan-syndrome"},{"URL__c":"https://www.genome.gov/Genetic-Disorders/Marfan-Syndrome"},{"URL__c":"https://medlineplus.gov/marfansyndrome.html"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"FBN1","GHR_URL__c":"https://medlineplus.gov/genetics/gene/fbn1","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal dominant"],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal pattern in the quality, quantity, or characteristics of sleep.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002360","HPO_Synonym__c":"Difficulty sleeping; Sleep abnormality; Sleep disturbances; Sleep dysfunction; Sleep-wake disturbance; Trouble sleeping","HPO_Name__c":"Sleep disturbance","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","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":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Pain in muscle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003326","HPO_Synonym__c":"Muscle ache; Muscle pain","HPO_Name__c":"Myalgia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Asthenic habitus refers to a slender build with long limbs, an angular profile, and prominent muscles or bones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001533","HPO_Synonym__c":"Asthenic habitus; Slender build; Thin body habitus; Thin build","HPO_Name__c":"Slender build","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A separation (dissection) of the layers of an artery.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005294","HPO_Name__c":"Arterial dissection","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An insufficiency of the aortic valve, leading to regurgitation (backward flow) of blood from the aorta into the left ventricle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001659","HPO_Synonym__c":"Aortic insufficiency; Aortic valve regurgitation","HPO_Name__c":"Aortic regurgitation","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Exaggerated anterior convexity of the thoracic vertebral column.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002808","HPO_Synonym__c":"Gibbus deformity; Hunched back; Hyperkyphosis; Round back","HPO_Name__c":"Kyphosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Protrusion of the contents of the abdominal cavity through the inguinal canal.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000023","HPO_Name__c":"Inguinal hernia","Feature_System__c":"Musculoskeletal System; Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","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:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Protrusion of the meninges through a defect of the skull or vertebral column.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002435","HPO_Name__c":"Meningocele","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of skull shape characterized by a increased anterior-posterior diameter, i.e., an increased antero-posterior dimension of the skull. Cephalic index less than 76%. Alternatively, an apparently increased antero-posterior length of the head compared to width. Often due to premature closure of the sagittal suture.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000268","HPO_Synonym__c":"Long, narrow head; Tall and narrow skull","HPO_Name__c":"Dolichocephaly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Visible space between the dental arches in occlusion.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010807","HPO_Synonym__c":"Absence of overlap of upper and lower teeth; Open bite; Open bite between upper and lower teeth","HPO_Name__c":"Open bite","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Complete dislocation of the lens of the eye.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012019","HPO_Synonym__c":"Completely dislocated lens; Completely dislocated lenses","HPO_Name__c":"Lens luxation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormally long and slender fingers (spider fingers).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001166","HPO_Synonym__c":"Long slender fingers; Long, slender fingers; Spider fingers","HPO_Name__c":"Arachnodactyly","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality in which the mandible is mislocalised posteriorly.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000278","HPO_Synonym__c":"Lower jaw retrognathia; Lower jaw retrusion; Mandibular retrognathia; Mandibular retrusion; Receding chin; Receding lower jaw; Receding mandible; Retrognathia of lower jaw; Retrusion of lower jaw; Weak chin; Weak jaw","HPO_Name__c":"Retrognathia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A tachycardia originating in the ventricles characterized by rapid heart rate (over 100 beats per minute) and broad QRS complexes (over 120 ms).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004756","HPO_Name__c":"Ventricular tachycardia","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The palpebral fissure inclination is more than two standard deviations below the mean.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000494","HPO_Synonym__c":"Antimongoloid eye slant; Antimongoloid slant of palpebral fissures; Antimongoloid slanted palpebral fissures; Down slanting palpebral fissures; Down-slanted palpebral fissures; Down-slanting palpebral fissure; Down-slanting palpebral fissures; Downslanting palpebral fissure; Downslanting palpebral fissures; Downward slanted palpebral fissures; Downward slanting of the opening between the eyelids; Downward slanting palpebral fissures; Downward-slanting palpebral fissures; Palpebral fissures down-slanted","HPO_Name__c":"Downslanted palpebral fissures","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Congenital underdevelopment of the iris.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007676","HPO_Synonym__c":"Hypoplastic iris; Iris hypoplasia; Underdeveloped iris","HPO_Name__c":"Hypoplasia of the iris","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Aortic dilatation refers to a dimension that is greater than the 95th percentile for the normal person age, sex and body size. In contrast, an aneurysm is defined as a localized dilation of the aorta that is more than 150 percent of predicted (ratio of observed to expected diameter 1.5 or more). Aneurysm should be distinguished from ectasia, which represents a diffuse dilation of the aorta less than 50 percent of normal aorta diameter.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004942","HPO_Synonym__c":"Aortic dilatation; Bulge in wall of large artery that carries blood away from heart; Enlarged aorta","HPO_Name__c":"Aortic aneurysm","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Dislocation or malposition of the crystalline lens of the eye. A partial displacement (or dislocation) of the lens is described as a subluxation of the lens, while a complete displacement is termed luxation of the lens. A complete displacement occurs if the lens is completely outside the patellar fossa of the lens, either in the anterior chamber, in the vitreous, or directly on the retina. If the lens is partially displaced but still contained within the lens space, then it is termed subluxation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001083","HPO_Synonym__c":"Abnormality of lens position; Lens dislocation","HPO_Name__c":"Ectopia lentis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Aortic dissection refers to a tear in the intimal layer of the aorta causing a separation between the intima and the medial layers of the aorta.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002647","HPO_Synonym__c":"Tear in inner wall of large artery that carries blood away from heart","HPO_Name__c":"Aortic dissection","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The presence of an abnormality of cardiac function that is responsible for the failure of the heart to pump blood at a rate that is commensurate with the needs of the tissues or a state in which abnormally elevated filling pressures are required for the heart to do so. Heart failure is frequently related to a defect in myocardial contraction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001635","HPO_Synonym__c":"Cardiac failure; Cardiac failures; Cardiac insufficiency; CHF; Chronic heart failure; Heart failure","HPO_Name__c":"Congestive heart failure","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Cornea plana is an abnormally flat shape of the cornea such that the normal protrusion of the cornea from the sclera is missing. The reduced corneal curvature can lead to hyperopia, and a hazy corneal limbus and arcus lipoides may develop at an early age.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007720","HPO_Synonym__c":"Cornea plana","HPO_Name__c":"Flat cornea","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of refraction characterized by the ability to see objects nearby clearly, while objects in the distance appear blurry.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000545","HPO_Synonym__c":"Close sighted; Near sighted; Near sightedness; Nearsightedness","HPO_Name__c":"Myopia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The capability that a joint (or a group of joints) has to move, passively and/or actively, beyond normal limits along physiological axes.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001382","HPO_Synonym__c":"Double-Jointed; Extensible joints; Flexible joints; Hyperextensible joints; Increased joint mobility; Increased mobility of joints; Joint hyperextensibility; Joint hyperflexibility; Joint hyperlaxity; Joint laxity; Joints move beyond expected range of motion; Lax joints; Loose-jointedness","HPO_Name__c":"Joint hypermobility","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Attention deficit hyperactivity disorder (ADHD) manifests at age 2-3 years or by first grade at the latest. The main symptoms are distractibility, impulsivity, hyperactivity, and often trouble organizing tasks and projects, difficulty going to sleep, and social problems from being aggressive, loud, or impatient.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007018","HPO_Synonym__c":"ADHD; Attention deficit; Attention deficit disorder; Attention deficit-hyperactivity disorder; Attention deficits; Childhood attention deficit/hyperactivity disorder","HPO_Name__c":"Attention deficit hyperactivity disorder","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An intermittent cessation of airflow at the mouth and nose during sleep is known as sleep apnea. Apneas that last at least 10 seconds are considered significant, but individuals with sleep apnea may experience apneas lasting from 20 seconds up to 2 or 3 minutes. Patients may have up to 15 events per hour of sleep.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010535","HPO_Synonym__c":"Pauses in breathing while sleeping; Sleep apnea; Sleep apnoea","HPO_Name__c":"Sleep apnea","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal outpouching or sac-like dilatation in an artery that originates from the abdominal aorta.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002636","HPO_Name__c":"Dilatation of an abdominal artery","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"One or both of the leaflets (cusps) of the mitral valve bulges back into the left atrium upon contraction of the left ventricle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001634","HPO_Name__c":"Mitral valve prolapse","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Thinned, erythematous, depressed bands of atrophic skin. Initially, striae appear as flattened and thinned, pinkish linear regions of the skin. Striae tend to enlarge in length and become reddish or purplish. Later, striae tend to appear as white, depressed bands that are parallel to the lines of skin tension. Striae distensae occur most often in areas that have been subject to distension such as the lower back, buttocks, thighs, breast, abdomen, and shoulders.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001065","HPO_Synonym__c":"Purplish striae; Stretch marks; Striae; Striae atrophicae; Striae cutis distensae","HPO_Name__c":"Striae distensae","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormal widening of the diameter of the pulmonary artery.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004927","HPO_Name__c":"Pulmonary artery dilatation","Feature_System__c":"Cardiovascular System; Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of the zygomatic bone.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010668","HPO_Synonym__c":"Abnormal malar bone morphology; Abnormality of the cheekbone; Abnormality of the zygomatic bone","HPO_Name__c":"Abnormal zygomatic bone morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Osteoporosis is a systemic skeletal disease characterized by low bone density and microarchitectural deterioration of bone tissue with a consequent increase in bone fragility. According to the WHO criteria, osteoporosis is defined as a BMD that lies 2.5 standard deviations or more below the average value for young healthy adults (a T-score below -2.5 SD).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000939","HPO_Name__c":"Osteoporosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal tortuous (i.e., twisted) form of the aorta.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006687","HPO_Name__c":"Aortic tortuosity","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormal localized widening (dilatation) of the tubular part of the ascending aorta.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004970","HPO_Synonym__c":"Aneurysm of the ascending tubular aorta; Ascending aortic aneurysm; Ascending aortic dilation; Bulging of wall of large artery located above heart; Dilatation of ascending aorta","HPO_Name__c":"Ascending tubular aorta aneurysm","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Partial dislocation of the lens of the eye.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001132","HPO_Synonym__c":"Partially dislocated lens","HPO_Name__c":"Lens subluxation","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Complete bilateral fractures of the pars interarticularis resulting in the anterior slippage of the vertebra.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003302","HPO_Synonym__c":"Displacement of one backbone compared to another; Slipped backbone; Spondylolithesis","HPO_Name__c":"Spondylolisthesis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Inability of the left ventricle to perform its normal physiologic function. Failure is either due to an inability to contract the left ventricle or the inability to relax completely and fill with blood during diastole.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005162","HPO_Synonym__c":"Impaired left ventricular function; Left ventricular dysfunction; Left ventricular failure; Left ventricular impairment; Left-sided heart failure","HPO_Name__c":"Abnormal left ventricular function","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Severe weight loss, wasting of muscle, loss of appetite, and general debility related to a chronic disease.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004326","HPO_Synonym__c":"Wasting syndrome","HPO_Name__c":"Cachexia","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A foot where the longitudinal arch of the foot is in contact with the ground or floor when the individual is standing; or, in a patient lying supine, a foot where the arch is in contact with the surface of a flat board pressed against the sole of the foot by the examiner with a pressure similar to that expected from weight bearing; or, the height of the arch is reduced.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001763","HPO_Synonym__c":"Flat feet; Flat foot","HPO_Name__c":"Pes planus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002996","HPO_Synonym__c":"Decreased elbow mobility; Limited elbow mobility; Limited elbow movement; Restricted elbow motion","HPO_Name__c":"Limited elbow movement","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Osteopenia is a term to define bone density that is not normal but also not as low as osteoporosis. By definition from the World Health Organization osteopenia is defined by bone densitometry as a T score -1 to -2.5.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000938","HPO_Synonym__c":"Generalized osteopenia","HPO_Name__c":"Osteopenia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A tall and slim body build with increased arm span to height ratio (>1.05) and a reduced upper-to-lower segment ratio (<0.85), i.e., unusually long arms and legs. The extremities as well as the hands and feet are unusually slim.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001519","HPO_Synonym__c":"Dolichostenomelia; Marfanoid body habitus; Marfanoid habitus; Reduced upper-lower segment ratio","HPO_Name__c":"Disproportionate tall stature","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Persistent difficulty in starting or maintaining sleep, or waking up earlier than desired, despite having adequate opportunities and conditions for sleep.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100785","HPO_Synonym__c":"Difficulty staying or falling asleep; Inability to sleep","HPO_Name__c":"Insomnia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Separation of the inner layers of the retina (neural retina) from the pigment epithelium.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000541","HPO_Synonym__c":"Detached retina; Retinal detachment","HPO_Name__c":"Retinal detachment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A defect of the chest wall characterized by a depression of the sternum, giving the chest (\\\"pectus\\\") a caved-in (\\\"excavatum\\\") appearance.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000767","HPO_Synonym__c":"Funnel chest","HPO_Name__c":"Pectus excavatum","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Coughing up (expectoration) of blood or blood-streaked sputum from the larynx, trachea, bronchi, or lungs.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002105","HPO_Synonym__c":"Coughing up blood","HPO_Name__c":"Hemoptysis","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005059","HPO_Synonym__c":"Joint pain/Joint inflammation","HPO_Name__c":"Arthralgia/arthritis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Developmental hypoplasia of the mandible.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000347","HPO_Synonym__c":"Decreased size of lower jaw; Decreased size of mandible; Hypoplasia of lower jaw; Hypoplasia of mandible; Hypoplastic mandible; Hypoplastic mandible condyle; Hypotrophic lower jaw; Hypotrophic mandible; Little lower jaw; Little mandible; Lower jaw deficiency; Lower jaw hypoplasia; Mandibular deficiency; Mandibular hypoplasia; Mandibular micrognathia; Micrognathia of lower jaw; Micromandible; Robin mandible; Severe hypoplasia of mandible; Small jaw; Small lower jaw; Small mandible; Underdevelopment of lower jaw; Underdevelopment of mandible","HPO_Name__c":"Micrognathia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Intrapelvic bulging of the medial acetabular wall.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0003179","HPO_Synonym__c":"Abnormally indented hip sockets; Acetabular protrusion; Protrusio acetabulae","HPO_Name__c":"Protrusio acetabuli","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Changes in alignment of teeth in the dental arch","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000678","HPO_Synonym__c":"Crowded teeth; Dental crowding; Dental overcrowding; Overcrowding of teeth","HPO_Name__c":"Dental crowding","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","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:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Subjective feeling of tiredness characterized by a lack of energy and motivation that persists for six months or longer.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012432","HPO_Synonym__c":"Chronic extreme exhaustion; Chronic fatigue","HPO_Name__c":"Chronic fatigue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction of bone mineral density, that is, of the amount of matter per cubic centimeter of bones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004349","HPO_Synonym__c":"Decreased bone mineral density; Decreased bone mineral density Z score; Low solidness and mass of the bones","HPO_Name__c":"Reduced bone mineral density","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormal localized widening (dilatation) of the aortic root.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002616","HPO_Synonym__c":"Bulge in wall of root of large artery that carries blood away from heart; Enlarged aortic root; Increased aortic root diameter","HPO_Name__c":"Aortic root aneurysm","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Glaucoma refers loss of retinal ganglion cells in a characteristic pattern of optic neuropathy usually associated with increased intraocular pressure.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000501","HPO_Name__c":"Glaucoma","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An abnormality of the mitral valve characterized by insufficiency or incompetence of the mitral valve resulting in retrograde leaking of blood through the mitral valve upon ventricular contraction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001653","HPO_Synonym__c":"Mitral incompetence; Mitral insufficiency; Mitral valve insufficiency; Mitral valve regurgitation","HPO_Name__c":"Mitral regurgitation","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002097","HPO_Synonym__c":"Pulmonary emphysema","HPO_Name__c":"Emphysema","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","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:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"The presence of a high and narrow palate.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002705","HPO_Synonym__c":"Gothic palate; High narrow palate; High vaulted palate; High, narrow palate; Narrow and high arched palate; Narrow, high-arched palate; Narrow, high-arched roof of mouth; Narrow, highly arched palate; Narrow, highly arched roof of mouth","HPO_Name__c":"High, narrow palate","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Abnormal largeness of the eye with an axial length > 2.5 standard deviations from population mean.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0007800","HPO_Synonym__c":"Globe elongated; Increased axial globe length; Increased front to back length of eyeball","HPO_Name__c":"Increased axial length of the globe","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Pneumothorax occurring without traumatic injury to the chest or lung.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002108","HPO_Synonym__c":"Spontaneous collapsed lung","HPO_Name__c":"Spontaneous pneumothorax","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A deformity of the chest caused by overgrowth of the ribs and characterized by protrusion of the sternum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000768","HPO_Synonym__c":"Pigeon chest","HPO_Name__c":"Pectus carinatum","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Bizygomatic (upper face) and bigonial (lower face) width are both more than 2 standard deviations below the mean (objective); or, an apparent reduction in the width of the upper and lower face (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000275","HPO_Synonym__c":"Decreased breadth of face; Decreased horizontal dimension of face; Decreased transverse dimension of face; Decreased width of face; Horizontal deficiency of face; Horizontal hypoplasia of face; Horizontal insufficiency of face; Narrow face; Narrow facies; Thin facies; Transverse deficiency of face; Transverse hypoplasia of face; Transverse insufficiency of face","HPO_Name__c":"Narrow face","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"One or more of the leaflets (cusps) of the tricuspid valve bulges back into the right atrium upon contraction of the right ventricle.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001704","HPO_Name__c":"Tricuspid valve prolapse","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Abnormal calcification of the mitral valve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0004382","HPO_Name__c":"Mitral valve calcification","Feature_System__c":"Musculoskeletal System; Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"A widening or ballooning of the dural sac surrounding the spinal cord usually at the lumbosacral level.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100775","HPO_Name__c":"Dural ectasia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:558","HPO_Frequency__c":"Frequent (30-79%)","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"}}],"tags":{"Cause":["Genetics"],"Disease Category":["Genetics","Congenital Abnormality"],"Specialist":["Genetics","Ophthalmology","Rheumatology","Orthopedics","Anterior segment of Eye","Vascular Medicine","Pediatrics"]},"synonyms":["fbn1-related thoracic aortic aneurysms and aortic dissections"," marfan syndrome type 1"," marfan syndrome, classic"," marfan syndrome, type 1"," marfan syndrome, type i"," marfan's disease"," marfan's syndrome"," mfs"," mfs1"]}