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Síndrome Timothy
ORPHA:65283CID-10 · I49.8CID-11 · BC65.0OMIM 601005DOENÇA RARA

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.

Mantido por Agente Raras·Colaborar como especialista →

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.

Publicações científicas
204 artigos
Último publicado: 2026 Mar 20

Escala de raridade

CLASSIFICAÇÃO ORPHANET · BRASIL 2024
<1 / 1 000 000
Ultra-rara
<1/50k
Muito rara
1/20k
Rara
1/10k
Pouco freq.
1/5k
Incomum
1/2k
Prevalência
0.0
Worldwide
Casos conhecidos
56
pacientes catalogados
Início
Antenatal
+ neonatal
🏥
SUS: Sem cobertura SUSScore: 0%
CID-10: I49.8
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Entender a doença

Do básico ao detalhe, leia no seu ritmo

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Sinais e sintomas

O que aparece no corpo e com que frequência cada sintoma acontece

Partes do corpo afetadas

❤️
Coração
7 sintomas
🧠
Neurológico
5 sintomas
📏
Crescimento
3 sintomas
🫁
Pulmão
3 sintomas
😀
Face
2 sintomas
🦴
Ossos e articulações
1 sintomas

+ 11 sintomas em outras categorias

Características mais comuns

100%prev.
Microdontia
Frequência: 17/17
100%prev.
Intervalo QT prolongado
Frequência: 17/17
100%prev.
Sindactilia cutânea
Frequência: 17/17
94%prev.
Bloqueio atrioventricular
Frequência: 16/17
94%prev.
Bradicardia
Frequência: 16/17
71%prev.
Taquicardia ventricular
Frequência: 12/17
33sintomas
Muito frequente (5)
Frequente (8)
Ocasional (12)
Sem dados (8)

Os sintomas variam de pessoa para pessoa. Abaixo estão as 33 características clínicas mais associadas, ordenadas por frequência.

Microdontia
Frequência: 17/17100%
Intervalo QT prolongadoProlonged QT interval
Frequência: 17/17100%
Sindactilia cutâneaCutaneous syndactyly
Frequência: 17/17100%
Bloqueio atrioventricularAtrioventricular block
Frequência: 16/1794%
BradicardiaBradycardia
Frequência: 16/1794%

Linha do tempo da pesquisa

Publicações por ano — veja quando o interesse científico cresceu
Anos de pesquisa1desde 2026
Total histórico204PubMed
Últimos 10 anos135publicações
Pico202421 papers
Linha do tempo
2026Hoje · 2026🧪 2022Primeiro ensaio clínico📈 2024Ano de pico
Publicações por ano (últimos 10 anos)

Encontrou um erro ou informação desatualizada? Sugira uma correção →

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.

CACNA1CVoltage-dependent L-type calcium channel subunit alpha-1CDisease-causing germline mutation(s) inAltamente restrito
FUNÇÃO

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

LOCALIZAÇÃO

Cell membraneCell membrane, sarcolemmaPerikaryonPostsynaptic density membraneCell projection, dendriteCell membrane, sarcolemma, T-tubule

VIAS BIOLÓGICAS (5)
NCAM1 interactionsRegulation of insulin secretionAdrenaline,noradrenaline inhibits insulin secretionPhase 0 - rapid depolarisationPhase 2 - plateau phase
MECANISMO DE DOENÇA

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.

OUTRAS DOENÇAS (10)
Timothy syndromelong QT syndrome 8Brugada syndrome 3neurodevelopmental disorder with hypotonia, language delay, and skeletal defects with or without seizures
HGNC:1390UniProt:Q13936

Variantes genéticas (ClinVar)

832 variantes patogênicas registradas no ClinVar.

🧬 CACNA1C: GRCh38/hg38 12p13.33-11.1(chr12:64621-34650483)x3 ()
🧬 CACNA1C: NM_000719.7(CACNA1C):c.4742C>G (p.Ala1581Gly) ()
🧬 CACNA1C: NM_000719.7(CACNA1C):c.80A>C (p.His27Pro) ()
🧬 CACNA1C: NM_000719.7(CACNA1C):c.3481_3483del (p.Phe1161del) ()
🧬 CACNA1C: GRCh38/hg38 12p13.33-q13.12(chr12:82453-49847230)x3 ()
Ver todas no ClinVar

Classificação de variantes (ClinVar)

Distribuição de 216 variantes classificadas pelo ClinVar.

86
130
Patogênica (39.8%)
VUS (60.2%)
VARIANTES MAIS SIGNIFICATIVAS
CACNA1C: NM_000719.7(CACNA1C):c.794T>A (p.Met265Lys) [Likely pathogenic]
CACNA1C: NM_000719.7(CACNA1C):c.3487G>A (p.Gly1163Ser) [Likely pathogenic]
CACNA1C: NM_000719.7(CACNA1C):c.1832T>C (p.Met611Thr) [Pathogenic/Likely pathogenic]
CACNA1C: NM_000719.7(CACNA1C):c.1552C>A (p.Arg518Ser) [Likely pathogenic]
CACNA1C: NM_000719.7(CACNA1C):c.788A>T (p.Lys263Met) [Likely pathogenic]

Diagnóstico

Os sinais que médicos procuram e os exames que confirmam

Carregando...

Tratamento e manejo

Remédios, cuidados de apoio e o que precisa acompanhar

Pipeline de tratamentos
Pipeline regulatório — de medicamentos já aprovados a drogas em pesquisa exploratória.
·Pré-clínico1
Medicamentos catalogadosEnsaios clínicos· 0 medicamentos · 1 ensaio
Carregando informações de tratamento...

Onde tratar no SUS

Hospitais de referência no Brasil e o protocolo oficial do SUS (PCDT)

🇧🇷 Atendimento SUS — Síndrome Timothy

🗺️

Selecione um estado ou use sua localização para ver resultados.

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

Pesquisa e ensaios clínicos

1 ensaios clínicos encontrados.

Distribuição por fase
Ver todos no ClinicalTrials.gov
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Publicações mais relevantes

Timeline de publicações
132 papers (10 anos)
#1

Structural Insights into L-Type Voltage-Gated Ca2+ Channel (CaV1.2) Activation by CaBP1.

Biochemistry2026 Mar 20

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.

#2

A novel computational model of human iPSC-derived ventricular myocytes with improved L-type calcium current for application to Timothy syndrome.

Scientific reports2026 Feb 16

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.

#3

Functional characterization of a novel de novo CACNA1C pathogenic variant in a patient with neurodevelopmental disorder.

Molecular brain2025 Mar 25

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.

#4

Deciphering the physiopathology of neurodevelopmental disorders using brain organoids.

Brain : a journal of neurology2025 Jan 07

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.

#5

Caenorhabditis elegans as an in vivo model system for human inherited primary arrhythmia syndromes.

The Journal of physiology2025 Dec 04

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

Ver todas no PubMed

📚 EuropePMC106 artigos no totalmostrando 134

2026

Structural Insights into L-Type Voltage-Gated Ca2+ Channel (CaV1.2) Activation by CaBP1.

Biochemistry
2026

A novel computational model of human iPSC-derived ventricular myocytes with improved L-type calcium current for application to Timothy syndrome.

Scientific reports
2025

Caenorhabditis elegans as an in vivo model system for human inherited primary arrhythmia syndromes.

The Journal of physiology
2025

Timothy Syndrome and CACNA1C-Related Disorder: First International Language and Management Guidelines Consensus Statement.

Research square
2025

Nutritional Factors and Arrhythmic Risk in Long QT Syndrome: A Narrative Review of Mechanistic and Clinical Evidence.

Advances in nutrition (Bethesda, Md.)
2025

CACNA1C c.1255G>A Variant Is Associated With an Atypical Timothy Syndrome Phenotype.

JACC. Case reports
2025

Disruptions in primary visual cortex physiology and function in a mouse model of Timothy syndrome.

Cerebral cortex (New York, N.Y. : 1991)
2025

Elevated body temperature exacerbates arrhythmia and seizure-like activity in a zebrafish model of Timothy syndrome.

bioRxiv : the preprint server for biology
2025

Broad Electrocardiogram Syndromes Spectrum: From Common Emergencies to Particular Electrical Heart Disorders-Part II.

Diagnostics (Basel, Switzerland)
2025

Evaluation of CACNA1C-Positive Patients Evaluated in a Tertiary Genetic Heart Rhythm Clinic.

Journal of cardiovascular translational research
2025

Functional characterization of a novel de novo CACNA1C pathogenic variant in a patient with neurodevelopmental disorder.

Molecular brain
2025

Synaptic plasticity deficits in a mouse model of Timothy syndrome: LTP saturation and its pharmacological rescue by nifedipine.

Biomedicine &amp; pharmacotherapy = Biomedecine &amp; pharmacotherapie
2024

A novel computational model of swine ventricular myocyte reveals new insights into disease mechanisms and therapeutic approaches in Timothy Syndrome.

Scientific reports
2024

A Natural History Study of Timothy Syndrome.

Orphanet journal of rare diseases
2024

A case of pioneering subcutaneous implantable cardioverter defibrillator intervention in Timothy syndrome.

BMC pediatrics
2024

Multiple beta cell-independent mechanisms drive hypoglycemia in Timothy syndrome.

Nature communications
2024

Potential Therapy Corrects Calcium Signaling in Timothy Syndrome.

American journal of medical genetics. Part A
2025

Deciphering the physiopathology of neurodevelopmental disorders using brain organoids.

Brain : a journal of neurology
2024

Knock-in swine model reveals new arrhythmia mechanism in Timothy syndrome.

Nature cardiovascular research
2024

Generating 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 research
2024

The evolution of mammalian Rem2: unraveling the impact of purifying selection and coevolution on protein function, and implications for human disorders.

Frontiers in bioinformatics
2024

Transmural APD heterogeneity determines ventricular arrhythmogenesis in LQT8 syndrome: Insights from Bidomain computational modeling.

PloS one
2024

Whole genome sequencing of families diagnosed with cardiac channelopathies reveals structural variants missed by whole exome sequencing.

Journal of human genetics
2024

Making sense of Timothy syndrome with 3D human neuronal models.

Neuron
2024

Expanding the Phenotype of the CACNA1C-Associated Neurological Disorders in Children: Systematic Literature Review and Description of a Novel Mutation.

Children (Basel, Switzerland)
2024

A genetic rescue strategy for Timothy syndrome.

Nature biotechnology
2024

Pediatric and Familial Genetic Arrhythmia Syndromes-Evaluation of Prolonged QTc-Differential Diagnosis and what You Need to Know.

Cardiac electrophysiology clinics
2024

ASO to treat Timothy syndrome.

Nature reviews. Drug discovery
2024

Antisense oligonucleotide therapeutic approach for Timothy syndrome.

Nature
2024

Targeting RNA opens therapeutic avenues for Timothy syndrome.

Nature
2024

An unruly case of functional 2:1 atrioventricular block.

Heart rhythm
2024

International Cohort of Neonatal Timothy Syndrome.

Neonatology
2023

Using CRISPR knock-in of fluorescent tags to examine isoform-specific expression of EGL-19 in C. elegans.

microPublication biology
2023

Inactivation influences the extent of inhibition of voltage-gated Ca+2 channels by Gem-implications for channelopathies.

Frontiers in physiology
2023

Hypertrophic cardiomyopathy and long QT syndrome in cardiac-only Timothy syndrome.

HeartRhythm case reports
2023

Roadmap for developing biologically inspired therapeutics for genetic brain disorders.

Trends in molecular medicine
2023

Same Gene, Different Story (a Case Report of Congenital Long QT Syndrome Subtype 8 With a Novel Mutation).

The American journal of cardiology
2023

Current updates on arrhythmia within Timothy syndrome: genetics, mechanisms and therapeutics.

Expert reviews in molecular medicine
2023

Syndromic forms of congenital hyperinsulinism.

Frontiers in endocrinology
2023

Phenotypic Characterization of Timothy Syndrome Caused by the CACNA1C p.Gly402Ser Variant.

Circulation. Genomic and precision medicine
2023

CACNA1C-Related Channelopathies.

Handbook of experimental pharmacology
2023

Unexpected impairment of INa underpins reentrant arrhythmias in a knock-in swine model of Timothy syndrome.

Nature cardiovascular research
2022

Geno- 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 medicine
2023

A Cross-Sectional Study of the Neuropsychiatric Phenotype of CACNA1C-Related Disorder.

Pediatric neurology
2022

Increased CaV1.2 late current by a CACNA1C p.R412M variant causes an atypical Timothy syndrome without syndactyly.

Scientific reports
2024

Classic Timothy Syndrome Associated With Bilateral Border Digit Syndactyly: A Case Series.

The Journal of hand surgery
2022

The road to the brain in Timothy syndrome is paved with enhanced CaV1.2 activation gating.

The Journal of general physiology
2022

Human cerebral organoids - a new tool for clinical neurology research.

Nature reviews. Neurology
2022

Maturation and circuit integration of transplanted human cortical organoids.

Nature
2022

CaV1.2 channelopathic mutations evoke diverse pathophysiological mechanisms.

The Journal of general physiology
2022

The 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.

Neuropharmacology
2022

Sigma non-opioid receptor 1 is a potential therapeutic target for long QT syndrome.

Nature cardiovascular research
2022

Hyperinsulinemic Hypoglycemia Associated with a CaV1.2 Variant with Mixed Gain- and Loss-of-Function Effects.

International journal of molecular sciences
2022

Novel CACNA1C R511Q mutation, located in domain Ⅰ-Ⅱ linker, causes non-syndromic type-8 long QT syndrome.

PloS one
2023

Congenital Long QT Syndrome: A Review of Genetic and Pathophysiologic Etiologies, Phenotypic Subtypes, and Clinical Management.

Cardiology in review
2022

Quickly moving too slowly: Interneuron migration in Timothy Syndrome.

Cell stem cell
2022

Dissecting the molecular basis of human interneuron migration in forebrain assembloids from Timothy syndrome.

Cell stem cell
2021

Involvement 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 neuroscience
2022

Use of ranolazine as rescue therapy in a patient with Timothy syndrome type 2.

Revista espanola de cardiologia (English ed.)
2021

Phenotypic expansion of CACNA1C-associated disorders to include isolated neurological manifestations.

Genetics in medicine : official journal of the American College of Medical Genetics
2021

Machine Learning Techniques to Classify Healthy and Diseased Cardiomyocytes by Contractility Profile.

ACS biomaterials science &amp; engineering
2021

Update on the Molecular Genetics of Timothy Syndrome.

Frontiers in pediatrics
2021

Case 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 pediatrics
2021

An autism-associated calcium channel variant causes defects in neuronal polarity in the ALM neuron of C. elegans.

microPublication biology
2021

Expanding the phenotype of CACNA1C mutation disorders.

Molecular genetics &amp; genomic medicine
2021

Neurologic complications of genetic channelopathies.

Handbook of clinical neurology
2021

Long-term follow-up of a patient with type 2 Timothy syndrome and the partial efficacy of mexiletine.

Gene
2020

Novel Gain-of-Function Variant in CACNA1C Associated With Timothy Syndrome, Multiple Accessory Pathways, and Noncompaction Cardiomyopathy.

Circulation. Genomic and precision medicine
2021

Voltage-Gated Calcium Channels in Nonexcitable Tissues.

Annual review of physiology
2020

Clinical characterization and outcome of prolonged heart rate-corrected QT interval among children with syndactyly.

Medicine
2020

Timothy syndrome iPSC modeling.

Molecular and cellular neurosciences
2020

Cav1.2 channelopathies causing autism: new hallmarks on Timothy syndrome.

Pflugers Archiv : European journal of physiology
2020

A mouse model of Timothy syndrome exhibits altered social competitive dominance and inhibitory neuron development.

FEBS open bio
2020

Elevated basal transcription can underlie timothy channel association with autism related disorders.

Progress in neurobiology
2020

High Prevalence of Late-Appearing T-Wave in Patients With Long QT Syndrome Type 8.

Circulation journal : official journal of the Japanese Circulation Society
2020

CACNA1C haploinsufficiency accounts for the common features of interstitial 12p13.33 deletion carriers.

European journal of medical genetics
2019

Aberrant calcium channel splicing drives defects in cortical differentiation in Timothy syndrome.

eLife
2019

An autism-causing calcium channel variant functions with selective autophagy to alter axon targeting and behavior.

PLoS genetics
2019

Photosensitive epilepsy and long QT: expanding Timothy syndrome phenotype.

Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
2019

Dysfunctional Cav1.2 channel in Timothy syndrome, from cell to bedside.

Experimental biology and medicine (Maywood, N.J.)
2019

Cardiac-only Timothy Syndrome (COTS): Peripartum Cardiomyopathy and Long QT Syndrome.

Revista espanola de cardiologia (English ed.)
2019

Unusual clinical description of adult with Timothy syndrome, carrier of a new heterozygote mutation of CACNA1C.

European journal of medical genetics
2019

Atomic Mechanisms of Timothy Syndrome-Associated Mutations in Calcium Channel Cav1.2.

Frontiers in physiology
2019

Impaired chromaffin cell excitability and exocytosis in autistic Timothy syndrome TS2-neo mouse rescued by L-type calcium channel blockers.

The Journal of physiology
2019

Dynamic QT Changes in Long QT Syndrome Type 8.

Circulation journal : official journal of the Japanese Circulation Society
2018

A C. elegans model for the rare human channelopathy, Timothy syndrome type 1.

microPublication biology
2018

Expanding clinical phenotype in CACNA1C related disorders: From neonatal onset severe epileptic encephalopathy to late-onset epilepsy.

American journal of medical genetics. Part A
2018

Dynamic Electrocardiographic Abnormalities Captured in Timothy Syndrome.

JACC. Clinical electrophysiology
2018

Enhanced oligodendrocyte maturation and myelination in a mouse model of Timothy syndrome.

Glia
2018

Clinical Outcomes and Modes of Death in Timothy Syndrome: A Multicenter International Study of a Rare Disorder.

JACC. Clinical electrophysiology
2018

A novel CACNA1C mutation identified in a patient with Timothy syndrome without syndactyly exerts both marked loss- and gain-of-function effects.

HeartRhythm case reports
2018

A 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 Neuroscience
2018

Timothy syndrome-like condition with syndactyly but without prolongation of the QT interval.

American journal of medical genetics. Part A
2017

The landscape of human mutually exclusive splicing.

Molecular systems biology
2018

A 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, Inc
2017

Auditory processing enhancements in the TS2-neo mouse model of Timothy Syndrome, a rare genetic disorder associated with autism spectrum disorders.

Advances in neurodevelopmental disorders
2017

Depletion of Stercobilin in Fecal Matter from a Mouse Model of Autism Spectrum Disorders.

Metabolomics : Official journal of the Metabolomic Society
2018

Application 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 medicine
2017

Computational Cardiac Modeling Reveals Mechanisms of Ventricular Arrhythmogenesis in Long QT Syndrome Type 8: CACNA1C R858H Mutation Linked to Ventricular Fibrillation.

Frontiers in physiology
2017

Altered Cav1.2 function in the Timothy syndrome mouse model produces ascending serotonergic abnormalities.

The European journal of neuroscience
2018

Comprehensive analysis of two Shank3 and the Cacna1c mouse models of autism spectrum disorder.

Genes, brain, and behavior
2017

Inhibition of CDK5 Alleviates the Cardiac Phenotypes in Timothy Syndrome.

Stem cell reports
2017

Assembly of functionally integrated human forebrain spheroids.

Nature
2018

A 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 Cardiology
2017

TRPM4 non-selective cation channel variants in long QT syndrome.

BMC medical genetics
2017

Timothy syndrome 1 genotype without syndactyly and major extracardiac manifestations.

American journal of medical genetics. Part A
2017

Activity-dependent regulation of T-type calcium channels by submembrane calcium ions.

eLife
2017

Incomplete Timothy syndrome secondary to a mosaic mutation of the CACNA1C gene diagnosed using next-generation sequencing.

American journal of medical genetics. Part A
2016

Rare Cause of Infranodal Block.

Cardiac electrophysiology clinics
2016

Studying the pathophysiologic connection between cardiovascular and nervous systems using stem cells.

Journal of neuroscience research
2016

A case of Timothy syndrome with adrenal medullary dystrophy.

Pathology international
2016

Pro-arrhythmogenic effects of CACNA1C G1911R mutation in human ventricular tachycardia: insights from cardiac multi-scale models.

Scientific reports
2016

Genetic Syndromes, Maternal Diseases and Antenatal Factors Associated with Autism Spectrum Disorders (ASD).

Frontiers in neuroscience
2016

Novel 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 cardiology
2016

Molecular and Functional Characterization of Rare CACNA1C Variants in Sudden Unexplained Death in the Young.

Congenital heart disease
2016

Cardiac arrest refractory to standard intervention in atypical Timothy syndrome (LQT8 type 2).

Proceedings (Baylor University. Medical Center)
2016

Sequential ionic and conformational signaling by calcium channels drives neuronal gene expression.

Science (New York, N.Y.)
2016

Arrhythmogenesis in Timothy Syndrome is associated with defects in Ca(2+)-dependent inactivation.

Nature communications
2016

Induced Pluripotent Stem Cells as a Novel Tool in Psychiatric Research.

Psychiatry investigation
2015

Induced pluripotent stem cells for modeling neurological disorders.

World journal of transplantation
2016

Modeling psychiatric disorders with patient-derived iPSCs.

Current opinion in neurobiology
2016

Rare 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 cardiology
2016

Modeling developmental neuropsychiatric disorders with iPSC technology: challenges and opportunities.

Current opinion in neurobiology
2015

A rare association with suffered cardiac arrest, long QT interval, and syndactyly: Timothy syndrome (LQT-8).

Anatolian journal of cardiology
2015

Identification 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 electrophysiology
2015

Long 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 A
2015

Schizophrenia Related Variants in CACNA1C also Confer Risk of Autism.

PloS one
2015

Calcium Channel Mutations in Cardiac Arrhythmia Syndromes.

Current molecular pharmacology
2015

Unusual retrospective prenatal findings in a male newborn with Timothy syndrome type 1.

European journal of medical genetics
2015

Dual 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 medicine
2015

Genome engineering of isogenic human ES cells to model autism disorders.

Nucleic acids research
2015

Expanding the phenotype of Timothy syndrome type 2: an adolescent with ventricular fibrillation but normal development.

American journal of medical genetics. Part A
2015

Induced pluripotent stem cells and their use in cardiac and neural regenerative medicine.

International journal of molecular sciences
2015

Gain-of-function mutations in the calcium channel CACNA1C (Cav1.2) cause non-syndromic long-QT but not Timothy syndrome.

Journal of molecular and cellular cardiology

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Doenças relacionadas

Doenças com sintomas parecidos — ajudam quem ainda está buscando diagnóstico

Ordenadas pelo número de sintomas em comum.

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.

  1. Structural Insights into L-Type Voltage-Gated Ca2+ Channel (CaV1.2) Activation by CaBP1.
    Biochemistry· 2026· PMID 41859936mais citado
  2. A novel computational model of human iPSC-derived ventricular myocytes with improved L-type calcium current for application to Timothy syndrome.
    Scientific reports· 2026· PMID 41699000mais citado
  3. Functional characterization of a novel de novo CACNA1C pathogenic variant in a patient with neurodevelopmental disorder.
    Molecular brain· 2025· PMID 40133997mais citado
  4. Deciphering the physiopathology of neurodevelopmental disorders using brain organoids.
    Brain : a journal of neurology· 2025· PMID 39222411mais citado
  5. Caenorhabditis elegans as an in vivo model system for human inherited primary arrhythmia syndromes.
    The Journal of physiology· 2025· PMID 41342285mais citado
  6. Timothy Syndrome and CACNA1C-Related Disorder: First International Language and Management Guidelines Consensus Statement.
    Res Sq· 2025· PMID 41333400recente
  7. Nutritional Factors and Arrhythmic Risk in Long QT Syndrome: A Narrative Review of Mechanistic and Clinical Evidence.
    Adv Nutr· 2025· PMID 40992506recente

Bases de dados e fontes oficiais

Identificadores e referências canônicas usadas para montar este verbete.

  1. ORPHA:65283(Orphanet)
  2. OMIM OMIM:601005(OMIM)
  3. MONDO:0010979(MONDO)
  4. GARD:9294(GARD (NIH))
  5. Variantes catalogadas(ClinVar)
  6. Busca completa no PubMed(PubMed)
  7. Artigo Wikipedia(Wikipedia)
  8. 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

Síndrome Timothy
Compêndio · Raras BR

Síndrome Timothy

ORPHA:65283 · MONDO:0010979
Prevalência
<1 / 1 000 000
Casos
56 casos conhecidos
Herança
Autosomal dominant
CID-10
I49.8 · Outras arritmias cardíacas especificadas
CID-11
Início
Antenatal, Neonatal
Prevalência
0.0 (Worldwide)
MedGen
UMLS
C1832916
EuropePMC
Wikidata
Wikipedia
Papers 10a
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