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Most Common: Hearing Loss (D034381), Deafness (D003638), Sensorineural HL (D006319), Waardenburg Syndrome, Usher Syndromes
Term ID:11382
Name:Unverricht-Lundborg Syndrome
Definition:An autosomal recessive condition characterized by recurrent myoclonic and generalized seizures, ATAXIA, slowly progressive intellectual deterioration, dysarthria, and intention tremor. Myoclonic seizures are severe and continuous, and tend to be triggered by movement, stress, and sensory stimuli. The age of onset is between 8 and 13 years, and the condition is relatively frequent in the Baltic region, especially Finland. (From Menkes, Textbook of Child Neurology, 5th ed, pp109-110)
Alternative IDs:OMIM:254800
ParentIDs:MESH:D020191|MESH:D020271
TreeNumbers:C10.228.140.490.250.650.900 |C10.574.500.875 |C16.320.400.940
Synonyms:Baltic Myoclonic Epilepsies |Baltic Myoclonic Epilepsy |Baltic Myoclonus |Baltic Myoclonus Epilepsies |Baltic Myoclonus Epilepsy |Diseases, Unverricht |Diseases, Unverricht-Lundborg |Disease, Unverricht |Disease, Unverricht-Lundborg |Epilepsies, Baltic Myoclonic |
Slim Mappings:Genetic disease (inborn)|Nervous system disease
Reference: MedGen: D020194
MeSH: D020194
OMIM: 254800;

Genes: CSTB;
Phenotypes
1 HP:0000007Autosomal recessive inheritance
2 HP:0001251Ataxia
3 HP:0002069Bilateral tonic-clonic seizure
4 HP:0001260Dysarthria
5 HP:0002121Generalized non-motor (absence) seizure
6 HP:0001268Mental deterioration
7 HP:0001336Myoclonus
Disease Causing ClinVar Variants
Variation_NameGeneIDGeneSymbolClinicalSignificancedbSNPRCVaccessionTestedInGTRPhenotypeIDsChromosomeStartStopHGVS_cHGVS_pHGVS_gOtherIDsDisease_ClinVarDisease_hgmd
NM_000100.3(CSTB):c.218_219delTC (p.Leu73Profs)1476CSTBLikely pathogenic;Pathogenic796943858RCV000049369; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519416145194162NM_000100.3:c.218_219delTCNP_000091.1:p.Leu73ProfsNC_000021.8:g.45194161_45194162delGA-C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.212A>C (p.Gln71Pro)1476CSTBPathogenic121909346RCV000008908; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519416845194168NM_000100.3:c.212A>CNP_000091.1:p.Gln71ProNC_000021.8:g.45194168T>GOMIM Allelic Variant:601145.0006C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.202C>T (p.Arg68Ter)1476CSTBPathogenic74315442RCV000008904; RCV000187286; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006; MedGen:CN221809214519417845194178NM_000100.3:c.202C>TNP_000091.1:p.Arg68TerNC_000021.8:g.45194178G>AOMIM Allelic Variant:601145.0002CN221809 not provided; C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.169-2A>G1476CSTBLikely pathogenic;Pathogenic386833441RCV000049368; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519421345194213NM_000100.3:c.169-2A>GNC_000021.8:g.45194213T>C-C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.168+2_168+21delinsAA1476CSTBPathogenic864309482RCV000202486; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519451845194537NM_000100.3:c.168+2_168+21delinsAANC_000021.8:g.45194518_45194537del20insTT-C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.168+1_168+18del1476CSTBPathogenic312262707RCV000202562; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519452145194538NM_000100.3:c.168+1_168+18delNC_000021.8:g.45194521_45194538del18-C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.168G>A (p.Lys56=)1476CSTBLikely pathogenic;Pathogenic386833440RCV000049367; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519453945194539NM_000100.3:c.168G>ANP_000091.1:p.Lys56=NC_000021.8:g.45194539C>T-C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.149G>A (p.Gly50Glu)1476CSTBPathogenic312262708RCV000202469; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519455845194558NM_000100.3:c.149G>ANP_000091.1:p.Gly50GluNC_000021.8:g.45194558C>T-C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.136C>T (p.Gln46Ter)1476CSTBPathogenic545986367RCV000202565; RCV000187279; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006; MedGen:CN221809214519457145194571NM_000100.3:c.136C>TNP_000091.1:p.Gln46TerNC_000021.8:g.45194571G>A-CN221809 not provided; C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.125C>A (p.Ser42Ter)1476CSTBLikely pathogenic;Pathogenic386833439RCV000049366; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519458245194582NM_000100.3:c.125C>ANP_000091.1:p.Ser42TerNC_000021.8:g.45194582G>T-C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.67-1G>C1476CSTBPathogenic147484110RCV000008903; RCV000187278; RCV000194700; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006; MedGen:CN221809; MedGen:CN233037214519464145194641NM_000100.3:c.67-1G>CNC_000021.8:g.45194641C>GOMIM Allelic Variant:601145.0001CN233037 Epilepsy, progressive myoclonic 1A (Unverricht and Lundborg); CN221809 not provided; C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.66G>A (p.Gln22=)1476CSTBLikely pathogenic;Pathogenic386833443RCV000049370; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519608545196085NM_000100.3:c.66G>ANP_000091.1:p.Gln22=NC_000021.8:g.45196085C>T-C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.10G>C (p.Gly4Arg)1476CSTBPathogenic74315443RCV000008905; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519614145196141NM_000100.3:c.10G>CNP_000091.1:p.Gly4ArgNC_000021.8:g.45196141C>GOMIM Allelic Variant:601145.0004C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.-210_-199(30_125)1476CSTBPathogenic386833438RCV000049365; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519634945196360NM_000100.3:c.-210_-199(30_125)-C0751785 254800 Unverricht-Lundborg syndrome
NM_000100.3(CSTB):c.-210CCCCGCCCCGCG(2_3)1476CSTBPathogenic193922905RCV000008906; NMedGen:C0751785,OMIM:254800,ORPHA:308,SNOMED CT:230423006214519636045196371NM_000100.3:c.-210CCCCGCCCCGCG(2_3)OMIM Allelic Variant:601145.0003C0751785 254800 Unverricht-Lundborg syndrome