{"Name":"GM3 synthase deficiency","DiseaseID__c":"GARD:0012059","id":12059,"encodedName":"gm3-synthase-deficiency","IsDeleted":false,"Disease_Name_Full__c":"GM3 synthase deficiency","Xref_IDs__c":"722762005; C1836824; C206525; DOID:0060470; MEDGEN:323005; MONDO:0018274; NBK593237; OMIM:609056; ORPHA:370933","USA_Estimate__c":null,"No_of_Specialist_Tagsa__c":5,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":1,"No_of_HHS_records__c":1,"World_Estimate__c":null,"No_of_HRSA_records__c":0,"Evidence_Based_Score__c":3,"No_of_Disease_Descriptions__c":5,"Disease_Characteristics_Score__c":6,"No_of_Age_at_Onset__c":0,"Description_Source__c":"MONDO:0018274","Disease_Description__c":"GM3 synthase deficiency is characterized by recurrent seizures (epilepsy) and problems with brain development. Within the first few weeks after birth, affected infants become irritable and develop feeding difficulties and vomiting that prevent them from growing and gaining weight at the usual rate. Seizures begin within the first year of life and worsen over time. Multiple types of seizures are possible, including generalized tonic-clonic seizures (also known as grand mal seizures), which cause muscle rigidity, convulsions, and loss of consciousness. Some affected children also experience prolonged episodes of seizure activity called nonconvulsive status epilepticus. The seizures associated with GM3 synthase deficiency tend to be resistant (refractory) to treatment with antiseizure medications.","GARD_Name__c":"GM3 synthase deficiency","GARD_Synonym__c":"amish infantile epilepsy syndrome; disorder of lactosylceramide alpha-2,3-sialyltransferase activity; epilepsy syndrome, infantile-onset symptomatic; ganglioside gm3 synthase deficiency; infantile-onset symptomatic epilepsy syndrome; infantile-onset symptomatic epilepsy syndrome - developmental stagnation - blindness; infantile-onset symptomatic epilepsy syndrome-developmental stagnation-blindness syndrome; lactosylceramide alpha-2,3-sialyltransferase activity disease; salt & pepper syndrome; salt and pepper developmental regression syndrome; salt-and-pepper syndrome; spdrs; st3gal5-cdg","Curated_Disease_Description_Source__c":"GARD:0012059","Curated_Disease_Description__c":"GM3 synthase deficiency is characterized by recurrent seizures (epilepsy) and problems with brain development. Within the first few weeks after birth, affected infants become irritable and develop feeding difficulties and vomiting that prevent them from growing and gaining weight at the usual rate. Seizures begin within the first year of life and worsen over time. Multiple types of seizures are possible, including generalized tonic-clonic seizures (also known as grand mal seizures), which cause muscle rigidity, convulsions, and loss of consciousness. Some affected children also experience prolonged episodes of seizure activity called nonconvulsive status epilepticus. The seizures associated with GM3 synthase deficiency tend to be resistant (refractory) to treatment with antiseizure medications. GM3 synthase deficiency profoundly disrupts brain development. Most affected children have severe intellectual disability and do not develop skills such as reaching for objects, speaking, sitting without support, or walking. Some have involuntary twisting or jerking movements of the arms that are described as choreoathetoid. Although affected infants can likely see and hear at birth, vision and hearing become impaired as the disease worsens. It is unknown how long people with GM3 synthase deficiency usually survive. Some affected individuals have changes in skin coloring (pigmentation), including dark freckle-like spots on the arms and legs and light patches on the arms, legs, and face. These changes appear in childhood and may become more or less apparent over time. The skin changes do not cause any symptoms, but they can help doctors diagnose GM3 synthase deficiency in children who also have seizures and delayed development.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":null,"SourceID__c":"ORPHA:370933","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0018274","ORPHANET_ID__c":"ORPHA:370933","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Deficiencia de gm3 sintasa","Spanish_Description_Source__c":null,"Spanish_Description__c":null,"Spanish_Disease_Name__c":"deficiencia de gm3 sintasa","Spanish_GARD_Synonym__c":"st3gal5-cdg","Category_Linearization__c":"ORPHA:68367","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":"GM3 synthase deficiency is characterized by recurrent seizures (epilepsy) and problems with brain development. Within the first few weeks after birth, affected infants become irritable and develop feeding difficulties and vomiting that prevent them from growing and gaining weight at the usual rate. Seizures begin within the first year of life and worsen over time. Multiple types of seizures are possible, including generalized tonic-clonic seizures (also known as grand mal seizures), which cause muscle rigidity, convulsions, and loss of consciousness. Some affected children also experience prolonged episodes of seizure activity called nonconvulsive status epilepticus. The seizures associated with GM3 synthase deficiency tend to be resistant (refractory) to treatment with antiseizure medications. GM3 synthase deficiency profoundly disrupts brain development. Most affected children have severe intellectual disability and do not develop skills such as reaching for objects, speaking, sitting without support, or walking. Some have involuntary twisting or jerking movements of the arms that are described as choreoathetoid. Although affected infants can likely see and hear at birth, vision and hearing become impaired as the disease worsens. It is unknown how long people with GM3 synthase deficiency usually survive. Some affected individuals have changes in skin coloring (pigmentation), including dark freckle-like spots on the arms and legs and light patches on the arms, legs, and face. These changes appear in childhood and may become more or less apparent over time. The skin changes do not cause any symptoms, but they can help doctors diagnose GM3 synthase deficiency in children who also have seizures and delayed development.","Curated_Disease_Description_Source__c":"GARD:0012059","GARD_Synonym__c":"amish infantile epilepsy syndrome; disorder of lactosylceramide alpha-2,3-sialyltransferase activity; epilepsy syndrome, infantile-onset symptomatic; ganglioside gm3 synthase deficiency; infantile-onset symptomatic epilepsy syndrome; infantile-onset symptomatic epilepsy syndrome - developmental stagnation - blindness; infantile-onset symptomatic epilepsy syndrome-developmental stagnation-blindness syndrome; lactosylceramide alpha-2,3-sialyltransferase activity disease; salt & pepper syndrome; salt and pepper developmental regression syndrome; salt-and-pepper syndrome; spdrs; st3gal5-cdg","Name":"GM3 synthase deficiency","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Metabolic Support UK","Website__c":"https://www.metabolicsupportuk.org"},{"Account_Name__c":"CURE Epilepsy","Website__c":"https://www.cureepilepsy.org/"}],"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":"Dermatology","Tag_Category__c":"Account;Disease Category;Specialist","category_description":"Skin diseases, or integumentary system diseases, affect the skin, hair, nails, sweat glands, or oil glands.","curated_tag_name":"Skin diseases"},{"Tag_Name__c":"Inborn Errors of Metabolism","Tag_Category__c":"Cause;Disease Category","category_description":"Inherited metabolic diseases, or inborn errors of metabolism, are a group of genetic diseases that affect the ability of the body's cells to convert food into energy.","curated_tag_name":"Inherited metabolic diseases"},{"Tag_Name__c":"Epilepsy","Tag_Category__c":"Account;Specialist","curated_tag_name":"Epilepsy"},{"Tag_Name__c":"Neurodevelopmental disabilities","Tag_Category__c":"Specialist","curated_tag_name":"Neurodevelopmental disabilities"}],"Diagnosis__c":[{"Type__c":"GTR","Curie__c":"MEDGEN:C1836824"}],"External_Identifier_Disease__c":[{"URL__c":"https://raresource.nih.gov/diseases/filter/0012059","Source__c":"RareSource"},{"URL__c":"https://www.ncbi.nlm.nih.gov/books/NBK593237","Source__c":"Gene Review","Xref__c":"NBK593237"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=323005","Source__c":"C1836824","Xref__c":"MEDGEN:323005"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A0060470","Source__c":"MONDO:0018274","Xref__c":"DOID:0060470"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C1836824","Source__c":"C1836824","Xref__c":"C1836824"},{"URL__c":"https://www.orpha.net/en/disease/detail/370933","Source__c":"C1836824; MONDO:0018274","Xref__c":"ORPHA:370933"},{"URL__c":"https://www.omim.org/entry/609056","Source__c":"C1836824; MONDO:0018274; ORPHA:370933","Xref__c":"OMIM:609056"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=722762005","Source__c":"C1836824; MONDO:0018274","Xref__c":"722762005"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C206525","Source__c":"C1836824","Xref__c":"C206525"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0018274","Source__c":"GARD:0012059","Xref__c":"MONDO:0018274"},{"URL__c":"https://medlineplus.gov/genetics/condition/gm3-synthase-deficiency","Source__c":"GARD:0012059","Xref__c":"https://medlineplus.gov/genetics/condition/gm3-synthase-deficiency"}],"GARD_Disease_Gene__c":[{"GeneSymbol__c":"ST3GAL5","GHR_URL__c":"https://medlineplus.gov/genetics/gene/st3gal5","Gene_Type__c":"protein-coding gene","Causal_Gene__c":true}],"Inheritance__c":["Autosomal recessive"],"GARD_Disease_Feature__c":[{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001252","HPO_Synonym__c":"Low muscle tone; Low or weak muscle tone; Muscle hypotonia; Muscular hypotonia","HPO_Name__c":"Hypotonia","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An emotional state characterized by negative feelings of heightened frustration, annoyance, or feeling upset, often triggered by internal factors (e.g., fatigue, hunger, unfulfilled desires) or external factors (e.g., social or environmental challenges). Irritability may be unpredictable, and is accompanied by a lowered threshold for emotional reactivity and observable features (speech, facial expressions, or psychomotor activity).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000737","HPO_Synonym__c":"Cranky; Easily annoyed; Easily bothered; Easily upset; Grumpy; Hot-temper; Irritability; Irritable; Irritable mood; On edge; Quick-temper; Short fuse; Short tempered","HPO_Name__c":"Irritability","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Occasional (5-29%)","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":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A cessation of the development of a child in the areas of motor skills, speech and language, cognitive skills, and social and/or emotional skills, following the onset of epilepsy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0006834","HPO_Name__c":"Developmental stagnation at onset of seizures","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Unlocalized atrophy of the brain with decreased total brain matter volume and increased ventricular size.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002283","HPO_Synonym__c":"Diffuse brain atrophy; Generalized brain atrophy; Generalized brain degeneration; Generalized cerebral atrophy","HPO_Name__c":"Global brain atrophy","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","Feature__r":{"HPO_Description__c":"Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000648","HPO_Synonym__c":"Optic nerve atrophy; Optic-nerve degeneration","HPO_Name__c":"Optic atrophy","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","Feature__r":{"HPO_Description__c":"Complete lack of development of speech and language abilities.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001344","HPO_Synonym__c":"Absent speech development; Lack of language development; Lack of speech; No speech development; No speech or language development; Nonverbal","HPO_Name__c":"Absent speech","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","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":"OMIM:609056","Feature__r":{"HPO_Description__c":"Status epilepticus is a type of prolonged seizure resulting either from the failure of the mechanisms responsible for seizure termination or from the initiation of mechanisms which lead to abnormally prolonged seizures (after time point t1). It is a condition that can have long-term consequences (after time point t2), including neuronal death, neuronal injury, and alteration of neuronal networks, depending on the type and duration of seizures.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002133","HPO_Synonym__c":"Prolonged seizure; Repeated seizure without recovery; Repeated seizures without recovery between them","HPO_Name__c":"Status epilepticus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001508","HPO_Synonym__c":"Faltering weight; FTT; Postnatal failure to thrive; Weight faltering","HPO_Name__c":"Failure to thrive","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Forceful ejection of the contents of the stomach through the mouth by means of a series of involuntary spasmic contractions.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002013","HPO_Synonym__c":"Emesis; Throwing up; Vomiting","HPO_Name__c":"Vomiting","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","Feature__r":{"HPO_Description__c":"A form of loss of vision caused by damage to the visual cortex rather than a defect in the eye.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0100704","HPO_Synonym__c":"Cortical blindness; Cortical visual impairment; Cortical/cerebral visual impairment; CVI","HPO_Name__c":"Cerebral visual impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","Feature__r":{"HPO_Description__c":"Increased intensity of the a reflex in the leg.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002395","HPO_Synonym__c":"Brisk lower extremity reflexes; Hyperreflexia in lower limbs; Hyperreflexia in the lower limbs; Increased deep tendon reflexes in the lower limbs; Leg hyperreflexia; Overactive lower leg reflex","HPO_Name__c":"Lower limb hyperreflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Loss of developmental skills, as manifested by loss of developmental milestones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002376","HPO_Synonym__c":"Loss of acquired milestones; Loss of developmental milestones; Loss of milestones; Mental deterioration in childhood; Neurodevelopmental regression; Psychomotor regression; Psychomotor regression beginning in infancy; Psychomotor regression in infants; Psychomotor regression, progressive","HPO_Name__c":"Developmental regression","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Impaired feeding performance of an infant as manifested by difficulties such as weak and ineffective sucking, brief bursts of sucking, and falling asleep during sucking. There may be difficulties with chewing or maintaining attention.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0008872","HPO_Name__c":"Feeding difficulties in infancy","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","Feature__r":{"HPO_Description__c":"Very brief, involuntary random muscular contractions occurring at rest, in response to sensory stimuli, or accompanying voluntary movements.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001336","HPO_Synonym__c":"Myoclonic jerks","HPO_Name__c":"Myoclonus","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","Feature__r":{"HPO_Description__c":"Loss of visual acuity (implying that vision was better at a certain time point in life). Otherwise the term reduced visual acuity should be used (or a subclass of that).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000572","HPO_Synonym__c":"Loss of vision; Vision loss; Visual loss","HPO_Name__c":"Visual loss","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Head circumference below 2 standard deviations below the mean for age and sex.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000252","HPO_Synonym__c":"Abnormally small cranium; Abnormally small skull; Decreased circumference of cranium; Decreased size of cranium; Decreased size of skull; Reduced head circumference; small cranium; Small head circumference","HPO_Name__c":"Microcephaly","Feature_System__c":"Nervous System; Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduced intensity of muscle tendon reflexes in the upper limbs. Reflexes are elicited by stretching the tendon of a muscle, e.g., by tapping.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012391","HPO_Name__c":"Hyporeflexia of upper limbs","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality in cerebral electrical activity recorded along the scalp by electroencephalography (EEG) and being identified at multiple locations (foci).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010841","HPO_Synonym__c":"Multifocal EEG abnormality","HPO_Name__c":"Multifocal epileptiform discharges","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Procedure_EEG"}},{"Provided_By__c":"OMIM:609056","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A bilateral tonic-clonic seizure is a seizure defined by a tonic (bilateral increased tone, lasting seconds to minutes) and then a clonic (bilateral sustained rhythmic jerking) phase.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002069","HPO_Synonym__c":"Bilateral convulsive seizures; Generalised tonic-clonic seizure (without specification of onset); Generalized convulsion; Generalized tonic-clonic seizure (without specification of onset); Grand mal; Grand mal seizures; Seizures, tonic-clonic; Tonic-clonic convulsion; Tonic-clonic convulsions","HPO_Name__c":"Bilateral tonic-clonic seizure","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","Feature__r":{"HPO_Description__c":"Involuntary movements characterized by both athetosis (inability to sustain muscles in a fixed position) and chorea (widespread jerky arrhythmic movements).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001266","HPO_Synonym__c":"Choreoathetoid movements","HPO_Name__c":"Choreoathetosis","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"OMIM:609056","Feature__r":{"HPO_Description__c":"A hyperpigmented circumscribed area of change in normal skin color without elevation or depression of any size.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001034","HPO_Synonym__c":"Hyperpigmented macules; Hyperpigmented spots","HPO_Name__c":"Hypermelanotic macule","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Cause":["Genetics","Inborn Errors of Metabolism"],"Disease Category":["Genetics","Neurology","Dermatology","Inborn Errors of Metabolism"],"Specialist":["Genetics","Neurology","Dermatology","Epilepsy","Neurodevelopmental disabilities"],"Account":["Dermatology","Epilepsy"]},"synonyms":["amish infantile epilepsy syndrome"," disorder of lactosylceramide alpha-2,3-sialyltransferase activity"," epilepsy syndrome, infantile-onset symptomatic"," ganglioside gm3 synthase deficiency"," infantile-onset symptomatic epilepsy syndrome"," infantile-onset symptomatic epilepsy syndrome - developmental stagnation - blindness"," infantile-onset symptomatic epilepsy syndrome-developmental stagnation-blindness syndrome"," lactosylceramide alpha-2,3-sialyltransferase activity disease"," salt & pepper syndrome"," salt and pepper developmental regression syndrome"," salt-and-pepper syndrome"," spdrs"," st3gal5-cdg"]}