A síndrome de Timothy é um distúrbio multissistêmico caracterizado por características cardíacas, das mãos, faciais e do neurodesenvolvimento que incluem prolongamento do intervalo QT, dedos das mãos e dos pés palmados, ponte nasal achatada, orelhas baixas, mandíbula superior pequena, lábio superior fino e características do autismo ou transtornos do espectro autista.
Introdução
O que você precisa saber de cara
A síndrome de Timothy é um distúrbio multissistêmico caracterizado por características cardíacas, das mãos, faciais e do neurodesenvolvimento que incluem prolongamento do intervalo QT, dedos das mãos e dos pés palmados, ponte nasal achatada, orelhas baixas, mandíbula superior pequena, lábio superior fino e características do autismo ou transtornos do espectro autista.
Escala de raridade
<1/50kMuito rara
1/20kRara
1/10kPouco freq.
1/5kIncomum
1/2k
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Sinais e sintomas
O que aparece no corpo e com que frequência cada sintoma acontece
Partes do corpo afetadas
+ 11 sintomas em outras categorias
Características mais comuns
Os sintomas variam de pessoa para pessoa. Abaixo estão as 33 características clínicas mais associadas, ordenadas por frequência.
Linha do tempo da pesquisa
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Genética e causas
O que está alterado no DNA e como passa nas famílias
Genes associados
1 gene identificado com associação a esta condição. Padrão de herança: Autosomal dominant.
Pore-forming, alpha-1C subunit of the voltage-gated calcium channel that gives rise to L-type calcium currents (PubMed:12181424, PubMed:15454078, PubMed:15863612, PubMed:16299511, PubMed:17224476, PubMed:20953164, PubMed:23677916, PubMed:24728418, PubMed:26253506, PubMed:27218670, PubMed:29078335, PubMed:29742403, PubMed:30023270, PubMed:30172029, PubMed:34163037, PubMed:8099908). Mediates influx of calcium ions into the cytoplasm, and thereby triggers calcium release from the sarcoplasm (By sim
Cell membraneCell membrane, sarcolemmaPerikaryonPostsynaptic density membraneCell projection, dendriteCell membrane, sarcolemma, T-tubule
Timothy syndrome
Disorder characterized by multiorgan dysfunction including lethal arrhythmias, webbing of fingers and toes, congenital heart disease, immune deficiency, intermittent hypoglycemia, cognitive abnormalities and autism.
Variantes genéticas (ClinVar)
832 variantes patogênicas registradas no ClinVar.
Classificação de variantes (ClinVar)
Distribuição de 216 variantes classificadas pelo ClinVar.
Vias biológicas (Reactome)
5 vias biológicas associadas aos genes desta condição.
Diagnóstico
Os sinais que médicos procuram e os exames que confirmam
Tratamento e manejo
Remédios, cuidados de apoio e o que precisa acompanhar
Onde tratar no SUS
Hospitais de referência no Brasil e o protocolo oficial do SUS (PCDT)
🇧🇷 Atendimento SUS — Síndrome Timothy
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Dados de DATASUS/CNES, SBGM, ABNeuro e Ministério da Saúde. Sempre confirme a disponibilidade diretamente com o estabelecimento.
Pesquisa ativa
Ensaios clínicos abertos e novidades científicas recentes
Ensaios em destaque
Pesquisa e ensaios clínicos
1 ensaios clínicos encontrados.
Publicações mais relevantes
Structural Insights into L-Type Voltage-Gated Ca2+ Channel (CaV1.2) Activation by CaBP1.
The L-type voltage-gated Ca2+ channel (CaV1.2) controls gene expression, cardiac function, and neuronal excitability. Mutations in CaV1.2 that disrupt channel function are implicated in cardiac arrhythmias, vascular dysfunction, Timothy Syndrome, and epilepsy. Calcium-binding protein 1 (CaBP1) binds to the IQ-motif in CaV1.2 (residues 1640-1665), blocks Ca2+-dependent inactivation (CDI), and promotes Ca2+-dependent facilitation (CDF). CaBP1 is 56% identical in sequence to calmodulin (CaM), and both proteins bind competitively to the IQ-motif. Our binding studies reveal that Ca2+ binding to CaBP1 is enhanced more than 40-fold when CaBP1 is bound to the IQ peptide. Also, the IQ peptide binds to Ca2+-bound CaBP1 (dissociation constant of 45 ± 10 nM) with 100-fold higher affinity than IQ binding to Ca2+-free CaBP1. We present NMR structures of Ca2+-CaBP1 bound to the IQ peptide, which reveal CaBP1 residues (A107, F111, M128, L131, I144, and M165) that contact IQ residues (I1654, Y1657, and F1658). Also, IQ residue K1662 forms a salt bridge with CaBP1 residue D140, which may explain why a K1662 charge reversal mutation causes 4-fold weaker IQ binding to CaBP1. Electrophysiology studies suggest that CaBP1 acts to increase the CaV1.2 channel open probability (Po). We propose that Ca2+ binding to the third and fourth EF-hands of CaBP1 and the binding of Ca2+-bound CaBP1 to the IQ-motif are important for CaV1.2 channel activation.
A novel computational model of human iPSC-derived ventricular myocytes with improved L-type calcium current for application to Timothy syndrome.
Human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) are a powerful platform for modeling inherited arrhythmias, yet current in silico representations face limitations in Ca2+ handling. Here, we present a novel ventricular hiPSC-CM ionic model incorporating a Markovian formulation of the L-type Ca2+ current (I[Formula: see text]), tailored to better recapitulate Ca[Formula: see text] dynamics and voltage-dependent inactivation. The model was calibrated against experimental data from hiPSC-CMs derived from a healthy individual and validated through a series of simulations relevant to both physiological and pathological conditions. These included pharmacological inhibition of I[Formula: see text] with nifedipine, Ca[Formula: see text] overload and DAD-mediated triggered activity, and the interplay between intracellular Ca[Formula: see text] cycling and membrane mechanisms in driving automaticity. Sensitivity analysis was used to generate a population of models capturing intercellular variability. In addition, the model was able to reproduce the effects of genetic mutations in the L-type Ca[Formula: see text] channel, including those associated with Timothy Syndrome, providing an additional layer of validation. Overall, this computational framework offers a flexible and physiologically grounded tool for investigating the mechanisms of arrhythmogenesis in hiPSC-CMs and for supporting personalized medicine applications.
Functional characterization of a novel de novo CACNA1C pathogenic variant in a patient with neurodevelopmental disorder.
Mutations in CACNA1C, the gene encoding Cav1.2 voltage-gated calcium channels, are associated with a spectrum of disorders, including Timothy syndrome and other neurodevelopmental and cardiac conditions. In this study, we report a child with a de novo heterozygous missense variant (c.1973T > C; L658P) in CACNA1C, presenting with refractory epilepsy, global developmental delay, hypotonia, and multiple systemic abnormalities, but without overt cardiac dysfunction. Electrophysiological analysis of the recombinant Cav1.2 L658P variant revealed profound gating alterations, most notably a significant hyperpolarizing shift in the voltage dependence of activation and inactivation. Additionally, molecular modeling suggested that the L658P mutation disrupts interactions within the IIS5 transmembrane segment, reducing the energy barrier for state transitions and facilitating channel opening at more negative voltages. These findings establish L658P as a pathogenic CACNA1C variant primarily associated with severe neurological dysfunction and expands the phenotypic spectrum of CACNA1C-related disorders.
Deciphering the physiopathology of neurodevelopmental disorders using brain organoids.
Neurodevelopmental disorders (NDD) encompass a range of conditions marked by abnormal brain development in conjunction with impaired cognitive, emotional and behavioural functions. Transgenic animal models, mainly rodents, traditionally served as key tools for deciphering the molecular mechanisms driving NDD physiopathology and significantly contributed to the development of pharmacological interventions aimed at treating these disorders. However, the efficacy of these treatments in humans has proven to be limited, due in part to the intrinsic constraint of animal models to recapitulate the complex development and structure of the human brain but also to the phenotypic heterogeneity found between affected individuals. Significant advancements in the field of induced pluripotent stem cells (iPSCs) offer a promising avenue for overcoming these challenges. Indeed, the development of advanced differentiation protocols for generating iPSC-derived brain organoids gives an unprecedented opportunity to explore human neurodevelopment. This review provides an overview of how 3D brain organoids have been used to investigate various NDD (i.e. Fragile X syndrome, Rett syndrome, Angelman syndrome, microlissencephaly, Prader-Willi syndrome, Timothy syndrome, tuberous sclerosis syndrome) and elucidate their pathophysiology. We also discuss the benefits and limitations of employing such innovative 3D models compared to animal models and 2D cell culture systems in the realm of personalized medicine.
Caenorhabditis elegans as an in vivo model system for human inherited primary arrhythmia syndromes.
Inherited primary arrhythmia syndromes (IPAS) are genetic heart diseases associated with an elevated risk of sudden cardiac death, particularly in young individuals. Modelling these rare and serious conditions is essential to elucidate their mechanisms and to identify new treatments. Most genes involved in IPAS (e.g., congenital long-QT syndrome, catecholaminergic polymorphic ventricular tachycardia, calcium-release deficiency syndrome, Andersen-Tawil syndrome, Timothy syndrome, calmodulinopathies, and short-QT syndrome) are conserved in Caenorhabditis elegans, a model organism that offers powerful genetic tools for precise gene manipulation, including knock-in, knock-out, and knock-down approaches. In vivo studies in C. elegans can be used to characterize the consequences of genetic variants (at molecular, cellular, tissue, and behavioural scales), to identify new regulatory proteins, and to perform drug testing. Here we summarize the characteristics of human IPAS and highlight the accumulating evidence that supports the utility of C. elegans as a simple yet powerful in vivo model for these diseases, capable of filling the gap between in vitro studies and complex transgenic animal models.
Publicações recentes
Structural Insights into L-Type Voltage-Gated Ca(2+) Channel (Ca(V)1.2) Activation by CaBP1.
A novel computational model of human iPSC-derived ventricular myocytes with improved L-type calcium current for application to Timothy syndrome.
Caenorhabditis elegans as an in vivo model system for human inherited primary arrhythmia syndromes.
Timothy Syndrome and CACNA1C-Related Disorder: First International Language and Management Guidelines Consensus Statement.
Nutritional Factors and Arrhythmic Risk in Long QT Syndrome: A Narrative Review of Mechanistic and Clinical Evidence.
📚 EuropePMC106 artigos no totalmostrando 134
Structural Insights into L-Type Voltage-Gated Ca2+ Channel (CaV1.2) Activation by CaBP1.
BiochemistryA novel computational model of human iPSC-derived ventricular myocytes with improved L-type calcium current for application to Timothy syndrome.
Scientific reportsCaenorhabditis elegans as an in vivo model system for human inherited primary arrhythmia syndromes.
The Journal of physiologyTimothy Syndrome and CACNA1C-Related Disorder: First International Language and Management Guidelines Consensus Statement.
Research squareNutritional Factors and Arrhythmic Risk in Long QT Syndrome: A Narrative Review of Mechanistic and Clinical Evidence.
Advances in nutrition (Bethesda, Md.)CACNA1C c.1255G>A Variant Is Associated With an Atypical Timothy Syndrome Phenotype.
JACC. Case reportsDisruptions in primary visual cortex physiology and function in a mouse model of Timothy syndrome.
Cerebral cortex (New York, N.Y. : 1991)Elevated body temperature exacerbates arrhythmia and seizure-like activity in a zebrafish model of Timothy syndrome.
bioRxiv : the preprint server for biologyBroad Electrocardiogram Syndromes Spectrum: From Common Emergencies to Particular Electrical Heart Disorders-Part II.
Diagnostics (Basel, Switzerland)Evaluation of CACNA1C-Positive Patients Evaluated in a Tertiary Genetic Heart Rhythm Clinic.
Journal of cardiovascular translational researchFunctional characterization of a novel de novo CACNA1C pathogenic variant in a patient with neurodevelopmental disorder.
Molecular brainSynaptic plasticity deficits in a mouse model of Timothy syndrome: LTP saturation and its pharmacological rescue by nifedipine.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapieA novel computational model of swine ventricular myocyte reveals new insights into disease mechanisms and therapeutic approaches in Timothy Syndrome.
Scientific reportsA Natural History Study of Timothy Syndrome.
Orphanet journal of rare diseasesA case of pioneering subcutaneous implantable cardioverter defibrillator intervention in Timothy syndrome.
BMC pediatricsMultiple beta cell-independent mechanisms drive hypoglycemia in Timothy syndrome.
Nature communicationsPotential Therapy Corrects Calcium Signaling in Timothy Syndrome.
American journal of medical genetics. Part ADeciphering the physiopathology of neurodevelopmental disorders using brain organoids.
Brain : a journal of neurologyKnock-in swine model reveals new arrhythmia mechanism in Timothy syndrome.
Nature cardiovascular researchGenerating a human induced pluripotent stem cell line (XACHi018-A) from a Timothy syndrome infant carrying heterozygous CACNA1C c.1216G>A (p.G406R) mutation.
Stem cell researchThe evolution of mammalian Rem2: unraveling the impact of purifying selection and coevolution on protein function, and implications for human disorders.
Frontiers in bioinformaticsTransmural APD heterogeneity determines ventricular arrhythmogenesis in LQT8 syndrome: Insights from Bidomain computational modeling.
PloS oneWhole genome sequencing of families diagnosed with cardiac channelopathies reveals structural variants missed by whole exome sequencing.
Journal of human geneticsMaking sense of Timothy syndrome with 3D human neuronal models.
NeuronExpanding the Phenotype of the CACNA1C-Associated Neurological Disorders in Children: Systematic Literature Review and Description of a Novel Mutation.
Children (Basel, Switzerland)A genetic rescue strategy for Timothy syndrome.
Nature biotechnologyPediatric and Familial Genetic Arrhythmia Syndromes-Evaluation of Prolonged QTc-Differential Diagnosis and what You Need to Know.
Cardiac electrophysiology clinicsASO to treat Timothy syndrome.
Nature reviews. Drug discoveryAntisense oligonucleotide therapeutic approach for Timothy syndrome.
NatureTargeting RNA opens therapeutic avenues for Timothy syndrome.
NatureAn unruly case of functional 2:1 atrioventricular block.
Heart rhythmInternational Cohort of Neonatal Timothy Syndrome.
NeonatologyUsing CRISPR knock-in of fluorescent tags to examine isoform-specific expression of EGL-19 in C. elegans.
microPublication biologyInactivation influences the extent of inhibition of voltage-gated Ca+2 channels by Gem-implications for channelopathies.
Frontiers in physiologyHypertrophic cardiomyopathy and long QT syndrome in cardiac-only Timothy syndrome.
HeartRhythm case reportsRoadmap for developing biologically inspired therapeutics for genetic brain disorders.
Trends in molecular medicineSame Gene, Different Story (a Case Report of Congenital Long QT Syndrome Subtype 8 With a Novel Mutation).
The American journal of cardiologyCurrent updates on arrhythmia within Timothy syndrome: genetics, mechanisms and therapeutics.
Expert reviews in molecular medicineSyndromic forms of congenital hyperinsulinism.
Frontiers in endocrinologyPhenotypic Characterization of Timothy Syndrome Caused by the CACNA1C p.Gly402Ser Variant.
Circulation. Genomic and precision medicineCACNA1C-Related Channelopathies.
Handbook of experimental pharmacologyUnexpected impairment of INa underpins reentrant arrhythmias in a knock-in swine model of Timothy syndrome.
Nature cardiovascular researchGeno- and phenotypic characteristics and clinical outcomes of CACNA1C gene mutation associated Timothy syndrome, "cardiac only" Timothy syndrome and isolated long QT syndrome 8: A systematic review.
Frontiers in cardiovascular medicineA Cross-Sectional Study of the Neuropsychiatric Phenotype of CACNA1C-Related Disorder.
Pediatric neurologyIncreased CaV1.2 late current by a CACNA1C p.R412M variant causes an atypical Timothy syndrome without syndactyly.
Scientific reportsClassic Timothy Syndrome Associated With Bilateral Border Digit Syndactyly: A Case Series.
The Journal of hand surgeryThe road to the brain in Timothy syndrome is paved with enhanced CaV1.2 activation gating.
The Journal of general physiologyHuman cerebral organoids - a new tool for clinical neurology research.
Nature reviews. NeurologyMaturation and circuit integration of transplanted human cortical organoids.
NatureCaV1.2 channelopathic mutations evoke diverse pathophysiological mechanisms.
The Journal of general physiologyThe CaV1.2 G406R mutation decreases synaptic inhibition and alters L-type Ca2+ channel-dependent LTP at hippocampal synapses in a mouse model of Timothy Syndrome.
NeuropharmacologySigma non-opioid receptor 1 is a potential therapeutic target for long QT syndrome.
Nature cardiovascular researchHyperinsulinemic Hypoglycemia Associated with a CaV1.2 Variant with Mixed Gain- and Loss-of-Function Effects.
International journal of molecular sciencesNovel CACNA1C R511Q mutation, located in domain Ⅰ-Ⅱ linker, causes non-syndromic type-8 long QT syndrome.
PloS oneCongenital Long QT Syndrome: A Review of Genetic and Pathophysiologic Etiologies, Phenotypic Subtypes, and Clinical Management.
Cardiology in reviewQuickly moving too slowly: Interneuron migration in Timothy Syndrome.
Cell stem cellDissecting the molecular basis of human interneuron migration in forebrain assembloids from Timothy syndrome.
Cell stem cellInvolvement of Calcium-Dependent Pathway and β Subunit-Interaction in Neuronal Migration and Callosal Projection Deficits Caused by the Cav1.2 I1166T Mutation in Developing Mouse Neocortex.
Frontiers in neuroscienceUse of ranolazine as rescue therapy in a patient with Timothy syndrome type 2.
Revista espanola de cardiologia (English ed.)Phenotypic expansion of CACNA1C-associated disorders to include isolated neurological manifestations.
Genetics in medicine : official journal of the American College of Medical GeneticsMachine Learning Techniques to Classify Healthy and Diseased Cardiomyocytes by Contractility Profile.
ACS biomaterials science & engineeringUpdate on the Molecular Genetics of Timothy Syndrome.
Frontiers in pediatricsCase Report: Expanding the Phenotypic Spectrum of Timothy Syndrome Type 1: A Sporadic Case With a de novo CACNA1C Pathogenic Variant and Segmental Ileal Dilatation.
Frontiers in pediatricsAn autism-associated calcium channel variant causes defects in neuronal polarity in the ALM neuron of C. elegans.
microPublication biologyExpanding the phenotype of CACNA1C mutation disorders.
Molecular genetics & genomic medicineNeurologic complications of genetic channelopathies.
Handbook of clinical neurologyLong-term follow-up of a patient with type 2 Timothy syndrome and the partial efficacy of mexiletine.
GeneNovel Gain-of-Function Variant in CACNA1C Associated With Timothy Syndrome, Multiple Accessory Pathways, and Noncompaction Cardiomyopathy.
Circulation. Genomic and precision medicineVoltage-Gated Calcium Channels in Nonexcitable Tissues.
Annual review of physiologyClinical characterization and outcome of prolonged heart rate-corrected QT interval among children with syndactyly.
MedicineTimothy syndrome iPSC modeling.
Molecular and cellular neurosciencesCav1.2 channelopathies causing autism: new hallmarks on Timothy syndrome.
Pflugers Archiv : European journal of physiologyA mouse model of Timothy syndrome exhibits altered social competitive dominance and inhibitory neuron development.
FEBS open bioElevated basal transcription can underlie timothy channel association with autism related disorders.
Progress in neurobiologyHigh Prevalence of Late-Appearing T-Wave in Patients With Long QT Syndrome Type 8.
Circulation journal : official journal of the Japanese Circulation SocietyCACNA1C haploinsufficiency accounts for the common features of interstitial 12p13.33 deletion carriers.
European journal of medical geneticsAberrant calcium channel splicing drives defects in cortical differentiation in Timothy syndrome.
eLifeAn autism-causing calcium channel variant functions with selective autophagy to alter axon targeting and behavior.
PLoS geneticsPhotosensitive epilepsy and long QT: expanding Timothy syndrome phenotype.
Clinical neurophysiology : official journal of the International Federation of Clinical NeurophysiologyDysfunctional Cav1.2 channel in Timothy syndrome, from cell to bedside.
Experimental biology and medicine (Maywood, N.J.)Cardiac-only Timothy Syndrome (COTS): Peripartum Cardiomyopathy and Long QT Syndrome.
Revista espanola de cardiologia (English ed.)Unusual clinical description of adult with Timothy syndrome, carrier of a new heterozygote mutation of CACNA1C.
European journal of medical geneticsAtomic Mechanisms of Timothy Syndrome-Associated Mutations in Calcium Channel Cav1.2.
Frontiers in physiologyImpaired chromaffin cell excitability and exocytosis in autistic Timothy syndrome TS2-neo mouse rescued by L-type calcium channel blockers.
The Journal of physiologyDynamic QT Changes in Long QT Syndrome Type 8.
Circulation journal : official journal of the Japanese Circulation SocietyA C. elegans model for the rare human channelopathy, Timothy syndrome type 1.
microPublication biologyExpanding clinical phenotype in CACNA1C related disorders: From neonatal onset severe epileptic encephalopathy to late-onset epilepsy.
American journal of medical genetics. Part ADynamic Electrocardiographic Abnormalities Captured in Timothy Syndrome.
JACC. Clinical electrophysiologyEnhanced oligodendrocyte maturation and myelination in a mouse model of Timothy syndrome.
GliaClinical Outcomes and Modes of Death in Timothy Syndrome: A Multicenter International Study of a Rare Disorder.
JACC. Clinical electrophysiologyA novel CACNA1C mutation identified in a patient with Timothy syndrome without syndactyly exerts both marked loss- and gain-of-function effects.
HeartRhythm case reportsA Critical Neurodevelopmental Role for L-Type Voltage-Gated Calcium Channels in Neurite Extension and Radial Migration.
The Journal of neuroscience : the official journal of the Society for NeuroscienceTimothy syndrome-like condition with syndactyly but without prolongation of the QT interval.
American journal of medical genetics. Part AThe landscape of human mutually exclusive splicing.
Molecular systems biologyA case report: Is mexiletine usage effective in the shortening of QTC interval and improving the T-wave alternans in Timothy syndrome?
Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, IncAuditory processing enhancements in the TS2-neo mouse model of Timothy Syndrome, a rare genetic disorder associated with autism spectrum disorders.
Advances in neurodevelopmental disordersDepletion of Stercobilin in Fecal Matter from a Mouse Model of Autism Spectrum Disorders.
Metabolomics : Official journal of the Metabolomic SocietyApplication of Multigene Panel Sequencing in Patients with Prolonged Rate-corrected QT Interval and No Pathogenic Variants Detected in KCNQ1, KCNH2, and SCN5A.
Annals of laboratory medicineComputational Cardiac Modeling Reveals Mechanisms of Ventricular Arrhythmogenesis in Long QT Syndrome Type 8: CACNA1C R858H Mutation Linked to Ventricular Fibrillation.
Frontiers in physiologyAltered Cav1.2 function in the Timothy syndrome mouse model produces ascending serotonergic abnormalities.
The European journal of neuroscienceComprehensive analysis of two Shank3 and the Cacna1c mouse models of autism spectrum disorder.
Genes, brain, and behaviorInhibition of CDK5 Alleviates the Cardiac Phenotypes in Timothy Syndrome.
Stem cell reportsAssembly of functionally integrated human forebrain spheroids.
NatureA multicentre study of patients with Timothy syndrome.
Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of CardiologyTRPM4 non-selective cation channel variants in long QT syndrome.
BMC medical geneticsTimothy syndrome 1 genotype without syndactyly and major extracardiac manifestations.
American journal of medical genetics. Part AActivity-dependent regulation of T-type calcium channels by submembrane calcium ions.
eLifeIncomplete Timothy syndrome secondary to a mosaic mutation of the CACNA1C gene diagnosed using next-generation sequencing.
American journal of medical genetics. Part ARare Cause of Infranodal Block.
Cardiac electrophysiology clinicsStudying the pathophysiologic connection between cardiovascular and nervous systems using stem cells.
Journal of neuroscience researchA case of Timothy syndrome with adrenal medullary dystrophy.
Pathology internationalPro-arrhythmogenic effects of CACNA1C G1911R mutation in human ventricular tachycardia: insights from cardiac multi-scale models.
Scientific reportsGenetic Syndromes, Maternal Diseases and Antenatal Factors Associated with Autism Spectrum Disorders (ASD).
Frontiers in neuroscienceNovel long QT syndrome-associated missense mutation, L762F, in CACNA1C-encoded L-type calcium channel imparts a slower inactivation tau and increased sustained and window current.
International journal of cardiologyMolecular and Functional Characterization of Rare CACNA1C Variants in Sudden Unexplained Death in the Young.
Congenital heart diseaseCardiac arrest refractory to standard intervention in atypical Timothy syndrome (LQT8 type 2).
Proceedings (Baylor University. Medical Center)Sequential ionic and conformational signaling by calcium channels drives neuronal gene expression.
Science (New York, N.Y.)Arrhythmogenesis in Timothy Syndrome is associated with defects in Ca(2+)-dependent inactivation.
Nature communicationsInduced Pluripotent Stem Cells as a Novel Tool in Psychiatric Research.
Psychiatry investigationInduced pluripotent stem cells for modeling neurological disorders.
World journal of transplantationModeling psychiatric disorders with patient-derived iPSCs.
Current opinion in neurobiologyRare copy number variations in an adult with transposition of the great arteries emphasize the importance of updated genetic assessments in syndromic congenital cardiac disease.
International journal of cardiologyModeling developmental neuropsychiatric disorders with iPSC technology: challenges and opportunities.
Current opinion in neurobiologyA rare association with suffered cardiac arrest, long QT interval, and syndactyly: Timothy syndrome (LQT-8).
Anatolian journal of cardiologyIdentification and Functional Characterization of a Novel CACNA1C-Mediated Cardiac Disorder Characterized by Prolonged QT Intervals With Hypertrophic Cardiomyopathy, Congenital Heart Defects, and Sudden Cardiac Death.
Circulation. Arrhythmia and electrophysiologyLong QT syndrome with craniofacial, digital, and neurologic features: Is it useful to distinguish between Timothy syndrome types 1 and 2?
American journal of medical genetics. Part ASchizophrenia Related Variants in CACNA1C also Confer Risk of Autism.
PloS oneCalcium Channel Mutations in Cardiac Arrhythmia Syndromes.
Current molecular pharmacologyUnusual retrospective prenatal findings in a male newborn with Timothy syndrome type 1.
European journal of medical geneticsDual optical recordings for action potentials and calcium handling in induced pluripotent stem cell models of cardiac arrhythmias using genetically encoded fluorescent indicators.
Stem cells translational medicineGenome engineering of isogenic human ES cells to model autism disorders.
Nucleic acids researchExpanding the phenotype of Timothy syndrome type 2: an adolescent with ventricular fibrillation but normal development.
American journal of medical genetics. Part AInduced pluripotent stem cells and their use in cardiac and neural regenerative medicine.
International journal of molecular sciencesGain-of-function mutations in the calcium channel CACNA1C (Cav1.2) cause non-syndromic long-QT but not Timothy syndrome.
Journal of molecular and cellular cardiologyAssociações
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Referências e fontes
Bases de dados externas citadas neste artigo
Publicações científicas
Artigos indexados no PubMed ligados a esta doença no grafo RarasNet — título, periódico e PMID direto da fonte, sem intermediação de IA.
- Structural Insights into L-Type Voltage-Gated Ca2+ Channel (CaV1.2) Activation by CaBP1.
- A novel computational model of human iPSC-derived ventricular myocytes with improved L-type calcium current for application to Timothy syndrome.
- Functional characterization of a novel de novo CACNA1C pathogenic variant in a patient with neurodevelopmental disorder.
- Deciphering the physiopathology of neurodevelopmental disorders using brain organoids.
- Caenorhabditis elegans as an in vivo model system for human inherited primary arrhythmia syndromes.
- Timothy Syndrome and CACNA1C-Related Disorder: First International Language and Management Guidelines Consensus Statement.
- Nutritional Factors and Arrhythmic Risk in Long QT Syndrome: A Narrative Review of Mechanistic and Clinical Evidence.
Bases de dados e fontes oficiais
Identificadores e referências canônicas usadas para montar este verbete.
- ORPHA:65283(Orphanet)
- OMIM OMIM:601005(OMIM)
- MONDO:0010979(MONDO)
- GARD:9294(GARD (NIH))
- Variantes catalogadas(ClinVar)
- Busca completa no PubMed(PubMed)
- Artigo Wikipedia(Wikipedia)
- Q3508705(Wikidata)
Dados compilados pelo RarasNet a partir de fontes abertas (Orphanet, OMIM, MONDO, PubMed/EuropePMC, ClinicalTrials.gov, DATASUS, PCDT/MS). Este conteúdo é informativo e não substitui avaliação médica.
Conteúdo mantido por Agente Raras · Médicos e pesquisadores podem colaborar
