scholarly journals Familial Tuberous Sclerosis: a case report

2016 ◽  
Vol 2 (3) ◽  
pp. 53
Author(s):  
Gajanan A. Surwade ◽  
Uddhav S. Khaire ◽  
Sagar P. Patil ◽  
Mamta K. Mulay ◽  
Mangala S. Borkar
Keyword(s):  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Multiple Organ ◽  
Benign Tumors ◽  
Gingival Hyperplasia ◽  
Gene Encoding ◽  
Cardiac Rhabdomyoma ◽  
Pulmonary Lymphangioleiomyomatosis ◽  
Organ Systems ◽  
Neurocutaneous Syndrome

<p class="abstract"><span lang="EN-US">Tuberous sclerosis is a neurocutaneous syndrome with an autosomal dominant inheritance. Tuberous sclerosis complex Syndrome caused by mutations of either the TSC1 orTSC2 gene encoding hamartin and tuberin respectively. It is characterized by the development of benign tumors; the most common oral manifestations of TSC are fibromas (angiofibromas), gingival hyperplasia and enamel hypoplasia and the formation of hamartomas in multiple organ systems leading to morbidity and mortality. Familial tuberous sclerosis probably occurs more often than is indicated by the literature: many family members show signs of being carriers of gene for the disease when carefully examined. We report a case of 25 year old female with the features of Tuberous sclerosis complex like seizures, papules over the cheek, shagreen patch, hypomelanotic macule on arm, buttacks, pulmonary lymphangioleiomyomatosis, subependymal nodules and tubers in brain, angiomyolipoma in both kidneys and Cardiac rhabdomyoma. This article reports on a family with documented tuberous sclerosis in three generations.</span></p>

scholarly journals A novel TSC2 c.4511 T > C missense variant associated with tuberous sclerosis complex

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Shunzhi He ◽  
Na Lv ◽  
Hongchu Bao ◽  
Xiong Wang ◽  
Jing Li
Keyword(s):  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Genetic Diagnosis ◽  
Missense Variant ◽  
Sporadic Case ◽  
Hereditary Disease ◽  
Multiple Organ ◽  
Cardiac Rhabdomyoma ◽  
Pathogenic Variants ◽  
Organ Systems

Abstract Background Tuberous sclerosis complex (TSC) is an autosomal-dominant hereditary disease characterized by hamartomas of multiple organ systems, including the brain, skin, heart, kidney and lung. Genetically, TSC is caused by pathogenic variants in the TSC1 or TSC2 gene. Case presentation We reported a sporadic case of a 32-year-old Han Chinese male diagnosed with TSC, whose spouse had a history of two spontaneous miscarriages and an induced abortion of a 30-week fetus identified with cardiac rhabdomyoma by ultrasound. A novel heterozygous missense variant in the TSC2 gene (Exon35:c.4511 T > C:p.L1504P) was identified in the male patient and the aborted fetus by next-generation sequencing, but not in his wife or both his parents. According to the ACMG/AMP criteria, this variant was classified as a “likely pathogenic” variant. Conclusion The novel TSC2:c.4511 T > C variant identified was highly likely associated with TSC and could potentially lead to adverse reproductive outcomes. IVF-ET and pre-implantation genetic diagnosis for TSC are recommended for this patient in the future to prevent fetal TSC.

scholarly journals TUBEROUS SCLEROSIS : ITS VARIED PRESENTATION

2020 ◽  
pp. 1-2
Author(s):  
Puja D. Nandaniya
Keyword(s):  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Autosomal Dominant ◽  
Benign Tumors ◽  
Gingival Hyperplasia ◽  
Oral Manifestations ◽  
Enamel Hypoplasia ◽  
Multiple Organs ◽  
Neurocutaneous Syndrome ◽  
The Brain

Tuberous sclerosis complex is an unusual autosomal dominant neurocutaneous syndrome characterized by the development of benign tumors affecting different body systems affecting the brain, skin, retina, and viscera. It is characterized by cutaneous changes, neurologic conditions, and the formation of hamartomas in multiple organs leading to morbidity and mortality. The most common oral manifestations are fibromas, gingival hyperplasia, and enamel hypoplasia. The management of these patients is often multidisciplinary involving specialists from various fields. Here, we present a case report of a 26-old-year male patient with characteristic clinical, radiological, and histological features of tuberous sclerosis complex.

Renal Manifestations of Tuberous Sclerosis Complex

2020 ◽  
Vol 7 (3) ◽  
pp. 5-19
Author(s):  
Nikhil Nair ◽  
Ronith Chakraborty ◽  
Zubin Mahajan ◽  
Aditya Sharma ◽  
Sidarth Sethi ◽  
...  
Keyword(s):  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Gene Disruption ◽  
Treatment Guidelines ◽  
Renal Cysts ◽  
Skin Lesions ◽  
Multiple Organ ◽  
Tsc2 Gene ◽  
Genetic Condition ◽  
Organ Systems

Tuberous sclerosis complex (TSC) is a genetic condition caused by a mutation in either the TSC1 or TSC2 gene. Disruption of either of these genes leads to impaired production of hamartin or tuberin proteins, leading to the manifestation of skin lesions, tumors and seizures. TSC can manifests in multiple organ systems with the cutaneous and renal systems being the most commonly affected. These manifestations can secondarily lead to the development of hypertension, chronic kidney disease, and neurocognitive declines. The renal pathologies most commonly seen in TSC are angiomyolipoma, renal cysts and less commonly, oncocytomas. In this review, we highlight the current understanding on the renal manifestations of TSC along with current diagnosis and treatment guidelines.

Genetic Etiologies, Diagnosis, and Treatment of Tuberous Sclerosis Complex

2019 ◽  
Vol 20 (1) ◽  
pp. 217-240 ◽  
Author(s):  
Catherine L. Salussolia ◽  
Katarzyna Klonowska ◽  
David J. Kwiatkowski ◽  
Mustafa Sahin
Keyword(s):  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Phenotypic Variability ◽  
Mtor Inhibitors ◽  
Multiple Organ ◽  
Great Promise ◽  
Optimal Timing ◽  
Autosomal Dominant Disorder ◽  
Organ Systems ◽  
Neuropsychiatric Manifestations

Tuberous sclerosis complex (TSC) is an autosomal dominant disorder that affects multiple organ systems due to an inactivating variant in either TSC1 or TSC2, resulting in the hyperactivation of the mechanistic target of rapamycin (mTOR) pathway. Dysregulated mTOR signaling results in increased cell growth and proliferation. Clinically, TSC patients exhibit great phenotypic variability, but the neurologic and neuropsychiatric manifestations of the disease have the greatest morbidity and mortality. TSC-associated epilepsy occurs in nearly all patients and is often difficult to treat because it is refractory to multiple antiseizure medications. The advent of mTOR inhibitors offers great promise in the treatment of TSC-associated epilepsy and other neurodevelopmental manifestations of the disease; however, the optimal timing of therapeutic intervention is not yet fully understood.

scholarly journals Tale of a Teenager: A Case Report of Tuberous Sclerosis

2021 ◽  
Vol 33 (1) ◽  
pp. 99-103
Author(s):  
Nawsabah Noor ◽  
Iffat Ara Jurfa ◽  
Halima Khatun ◽  
Homayra Tahseen ◽  
Quazi Tarikul Islam
Keyword(s):  
Case Report ◽  
Tuberous Sclerosis ◽  
Clinical Features ◽  
Tuberous Sclerosis Complex ◽  
Autosomal Dominant ◽  
Skin Lesions ◽  
Benign Tumors ◽  
Dominant Inheritance ◽  
Neurocutaneous Syndrome ◽  
The Brain

Tuberous sclerosis complex is an unusual neurocutaneous syndrome with autosomal-dominant inheritance. It is characterized by the development of benign tumors involving the brain, skin, retina, heart, kidneys, lungs, and liver. The classic triad of clinical features comprises learning disability, epilepsy and skin lesions but there is marked heterogeneity in clinical features. Here, we present a case report of a 17-old-year male with characteristic clinical and radiological features of tuberous sclerosis complex. Bangladesh J Medicine July 2022; 33(1) : 99-103

scholarly journals Renal Manifestations of Tuberous Sclerosis Complex

2020 ◽  
Vol 7 (3) ◽  
pp. 5-19
Author(s):  
Nikhil Nair ◽  
Ronith Chakraborty ◽  
Zubin Mahajan ◽  
Aditya Sharma ◽  
Sidharth K. Sethi ◽  
...  
Keyword(s):  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Gene Disruption ◽  
Treatment Guidelines ◽  
Renal Cysts ◽  
Skin Lesions ◽  
Multiple Organ ◽  
Tsc2 Gene ◽  
Genetic Condition ◽  
Organ Systems

Tuberous sclerosis complex (TSC) is a genetic condition caused by a mutation in either the TSC1 or TSC2 gene. Disruption of either of these genes leads to impaired production of hamartin or tuberin proteins, leading to the manifestation of skin lesions, tumors, and seizures. TSC can manifest in multiple organ systems with the cutaneous and renal systems being the most commonly affected. These manifestations can secondarily lead to the development of hypertension, chronic kidney disease, and neurocognitive declines. The renal pathologies most commonly seen in TSC are angiomyolipoma, renal cysts, and less commonly, oncocytomas. In this review, we highlight the current understanding on the renal manifestations of TSC along with current diagnosis and treatment guidelines.

scholarly journals Dissecting the Roles of the Tuberin Protein in the Subcellular Localization of the G2/M Cyclin, Cyclin B1

2021 ◽  
Author(s):  
Jessica Dare-Shih ◽  
Adam Pillon ◽  
Jackie Fong ◽  
Elizabeth Fidalgo da Silva ◽  
Lisa Porter
Keyword(s):  
Cell Cycle ◽  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Molecular Mechanisms ◽  
Cyclin B1 ◽  
Nuclear Accumulation ◽  
Benign Tumors ◽  
Tsc2 Gene ◽  
Organ Systems ◽  
Wide Range

Tuberin is a major component of the protein regulatory complex known as the Tuberous Sclerosis Complex and plays a crucial role in cell cycle progression and protein synthesis. Mutations in the Tuberin gene, TSC2, lead to the formation of benign tumors in many organ systems and causes the Tuberous Sclerosis Complex disorder. Genotypes ranging from point mutations to large deletions in the TSC2 gene have been clinically characterized with a wide range of phenotypes from skin tumors to large brain tumors. Our current work investigates the molecular mechanisms behind Tuberin and its ability to regulate the cell cycle through its binding to the G2/M cyclin, Cyclin B1. After creating an early stop codon in a critical region of the Tuberin, our results show the in vitro phenotype that occurs from a truncated Tuberin protein. Herein we demonstrate that this clinically relevant truncated form of Tuberin promotes an increased nuclear accumulation of Cyclin B1 and a subsequent increase in cell proliferation supporting the phenotypic data seen in the clinic with Tuberous Sclerosis Complex patients showing deletions within the TSC2 gene. This data provides an insight into some of the functional and molecular consequences of truncated proteins that are seen in clinical patients.

MATERNAL TUBEROUS SCLEROSIS WITH FETAL CARDIAC RHABDOMYOMA – A CASE REPORT

2021 ◽  
pp. 28-30
Author(s):  
Disha Rama Harikanth ◽  
Manjushri Waikar
Keyword(s):  
Tuberous Sclerosis ◽  
Autosomal Dominant ◽  
Monitoring And Evaluation ◽  
Fetal Outcome ◽  
Multiple Organ ◽  
Careful Monitoring ◽  
Cardiac Rhabdomyoma ◽  
Organ Systems ◽  
Neurocutaneous Disorder ◽  
Life Threatening

Tuberous sclerosis is a multisystemic, autosomal dominant neurocutaneous disorder of hamartoma formation affecting multiple organ systems and hence adversely affecting the maternal and fetal outcome. We report a case of maternal tuberous sclerosis with fetal cardiac rhabdomyoma detected in utero at 22 weeks but presented at 39 weeks of gestation. We conclude that Maternal or Fetal tuberous sclerosis deserves careful monitoring and evaluation so that the patients can be counselled regarding its life threatening complications to the baby and make informed decision regarding continuation of pregnancy

scholarly journals Myelin Pathology Beyond White Matter in Tuberous Sclerosis Complex (TSC) Cortical Tubers

2020 ◽  
Vol 79 (10) ◽  
pp. 1054-1064
Author(s):  
Angelika Mühlebner ◽  
Jackelien van Scheppingen ◽  
Andrew de Neef ◽  
Anika Bongaarts ◽  
Till S Zimmer ◽  
...  
Keyword(s):  
White Matter ◽  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Basic Protein ◽  
Autism Spectrum ◽  
Multiple Organ ◽  
Small Subset ◽  
Organ Systems ◽  
Quantitative Image ◽  
Cortical Tubers

Abstract Tuberous sclerosis complex (TSC) is a monogenetic disease that arises due to mutations in either the TSC1 or TSC2 gene and affects multiple organ systems. One of the hallmark manifestations of TSC are cortical malformations referred to as cortical tubers. These tubers are frequently associated with treatment-resistant epilepsy. Some of these patients are candidates for epilepsy surgery. White matter abnormalities, such as loss of myelin and oligodendroglia, have been described in a small subset of resected tubers but mechanisms underlying this phenomenon are unclear. Herein, we analyzed a variety of neuropathologic and immunohistochemical features in gray and white matter areas of resected cortical tubers from 46 TSC patients using semi-automated quantitative image analysis. We observed divergent amounts of myelin basic protein as well as numbers of oligodendroglia in both gray and white matter when compared with matched controls. Analyses of clinical data indicated that reduced numbers of oligodendroglia were associated with lower numbers on the intelligence quotient scale and that lower amounts of myelin-associated oligodendrocyte basic protein were associated with the presence of autism-spectrum disorder. In conclusion, myelin pathology in cortical tubers extends beyond the white matter and may be linked to cognitive dysfunction in TSC patients.

Oral Findings in Children, Adolescents and Adults with Tuberous Sclerosis Complex

2020 ◽  
Vol 44 (3) ◽  
pp. 190-195
Author(s):  
Emil Korporowicz ◽  
Dorota Olczak-Kowalczyk ◽  
Maja Lipiec ◽  
Monika Słowińska ◽  
Dariusz Gozdowski ◽  
...  
Keyword(s):  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Genetic Disorder ◽  
Tooth Wear ◽  
Benign Tumors ◽  
Oral Lesions ◽  
Gingival Hyperplasia ◽  
Enamel Defects ◽  
Traumatic Lesions ◽  
Adolescents And Adults

Objectives: Tuberous sclerosis complex (TSC) is a multisystem genetic disorder characterized by the development of benign tumors. The aim of the study was to assess the prevalence of oral lesions in patients with TSC and healthy individuals. Study design: The study included 120 patients aged 1.1 to 42.7 years: 60 patients with TSC and 60 controls. Clinical assessment of oral hygiene (Plaque Index–PLI), gingiva (Gingival Index–GI, Gingival Overgrowth Index–GOI), oral mucosa and dentition (caries, tooth wear, enamel defects) was performed. Statistical analysis was performed. Results: 40 patients with TSC received anticonvulsants. Neglected hygiene (PLI: 1.50±0.96 vs 0.92±0.72), gingival hyperplasia (50.0% vs.1.7%), gingivitis (80.7% vs. 53.4%), oral mucosal fibromas (10.0% vs. 0.0%), mucous membrane traumatic lesions (11.7% vs. 1.7%), enamel pits and hypoplasia of incisal borders (41.7% vs. 6.7%), tooth wear (35.0% vs. 11.7%) were more common in patients with TSC compared to controls; increased gingival hyperplasia was correlated with vigabatrin and levetiracetam treatment (r = 0.266 and 0.279, respectively), gingivitis was correlated with PLI (r= 0.635). Conclusions: Although gingival fibromas in TSC are independent of patient’s age, young age, anticonvulsant therapy and local factors increase their severity. Enamel defects in TSC include pits, but also enamel loss on the incisal edges and tooth wear.

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