Tuberous Sclerosis Complex

Tuberous Sclerosis Complex (TSC) — Disease Characteristics Research Report

2026-04-25
Falcon MONDO:0001734 Model: Edison Scientific Literature 43 citations

Tuberous Sclerosis Complex (TSC) — Disease Characteristics Research Report

Target disease

  • Disease name: Tuberous Sclerosis Complex (TSC)
  • Category: Mendelian / autosomal dominant “mTORopathy” (prototypical)
  • MONDO ID: MONDO:0001734 (“tuberous sclerosis”; OpenTargets disease node) (man2024thegeneticsof pages 1-2)

Executive summary (current understanding)

Tuberous sclerosis complex (TSC) is a rare, autosomal dominant, multisystem disorder caused by heterozygous loss-of-function pathogenic variants in the tumor suppressor genes TSC1 and TSC2, encoding hamartin and tuberin (conte2024therapeuticapproachesto pages 1-2, racioppi2024prenatalmtorinhibitors pages 1-2). Loss of TSC complex function increases RHEB-GTP and hyperactivates mTORC1, driving abnormal growth and benign tumor (hamartoma) formation across multiple organs (brain, kidneys, skin, heart, lungs) and causing major neurologic morbidity including epilepsy and neurodevelopmental disorders (dufneralmeida2024molecularandfunctional pages 1-2, man2024thegeneticsof pages 1-2, monich2024tuberoussclerosiscomplex pages 1-2).

A quantitative evidence summary is provided in the table below.

Table (click to expand)
Domain Metric Value(s) Population/Study Year (publication) PMID DOI/URL
Epidemiology Incidence at birth/live births 1:5,800 to 1:13,520 live births Review of TSC genetics and epidemiology 2024 https://doi.org/10.3390/genes15030332 (man2024thegeneticsof pages 1-2)
Epidemiology Incidence at birth/live births 1:6,000 to 1:10,000 live births Therapeutic review of TSC 2024 https://doi.org/10.3390/biom14091190 (conte2024therapeuticapproachesto pages 1-2)
Epidemiology Prevalence ~1 in 6,000 live births Prenatal mTOR inhibitor review 2024 https://doi.org/10.3390/jcm13216335 (racioppi2024prenatalmtorinhibitors pages 1-2)
Epidemiology Adjusted prevalence 10.2 per 100,000 Shizuoka Kokuho Database; 125 TSC patients; ICD-10 Q85.1 ascertainment 2025 https://doi.org/10.1186/s13023-025-03799-w (kishida2025epidemiologicalinsightsand pages 1-2, kishida2025epidemiologicalinsightsand pages 2-4)
Epidemiology Crude annual prevalence (2019) 85 cases among 1,401,399 registrants; ~6.1 per 100,000 Shizuoka Kokuho Database 2025 https://doi.org/10.1186/s13023-025-03799-w (kishida2025epidemiologicalinsightsand pages 2-4)
Epidemiology Age-specific prevalence, males 0–19 y: 18.29/100,000; 20–64 y: 8.53/100,000; 65+ y: 2.37/100,000 Shizuoka, 2019 2025 https://doi.org/10.1186/s13023-025-03799-w (kishida2025epidemiologicalinsightsand pages 2-4)
Epidemiology Age-specific prevalence, females 0–19 y: 15.38/100,000; 20–64 y: 8.56/100,000; 65+ y: 2.24/100,000 Shizuoka, 2019 2025 https://doi.org/10.1186/s13023-025-03799-w (kishida2025epidemiologicalinsightsand pages 2-4)
Epidemiology Prevalence trend 5.4/100,000 (2014) to 6.1/100,000 (2015) Shizuoka prevalence trend after criteria/treatment changes 2025 https://doi.org/10.1186/s13023-025-03799-w (kishida2025epidemiologicalinsightsand pages 5-6)
Genetics No mutation identified (NMI) by conventional testing ~15% Genetics review 2024 https://doi.org/10.3390/genes15030332 (man2024thegeneticsof pages 1-2)
Genetics Molecular diagnostic yield 106/116 (91%) definite clinical TSC cases had pathogenic TSC1/TSC2 alteration Molecular and functional assessment cohort 2024 https://doi.org/10.3390/genes15111432 (dufneralmeida2024molecularandfunctional pages 1-2)
Genetics Gene distribution in molecularly solved cohort TSC1: 18/106 (17%); TSC2: 88/106 (83%); 35 novel variants Molecular and functional assessment cohort 2024 https://doi.org/10.3390/genes15111432 (dufneralmeida2024molecularandfunctional pages 1-2)
Phenotypes Epilepsy frequency 62% to 93% Therapeutic review 2024 https://doi.org/10.3390/biom14091190 (conte2024therapeuticapproachesto pages 1-2)
Phenotypes Drug-resistant/pharmacoresistant epilepsy ~two-thirds affected Prenatal mTOR inhibitor review 2024 https://doi.org/10.3390/jcm13216335 (racioppi2024prenatalmtorinhibitors pages 1-2)
Phenotypes Intellectual disability ~50% Prenatal mTOR inhibitor review 2024 https://doi.org/10.3390/jcm13216335 (racioppi2024prenatalmtorinhibitors pages 1-2)
Phenotypes Autism spectrum disorder ~50%; TAND affects ~90% lifetime Prenatal mTOR inhibitor review 2024 https://doi.org/10.3390/jcm13216335 (racioppi2024prenatalmtorinhibitors pages 1-2, racioppi2024prenatalmtorinhibitors pages 2-3)
Phenotypes SEGA prevalence Up to 20% Therapeutic review 2024 https://doi.org/10.3390/biom14091190 (conte2024therapeuticapproachesto pages 1-2)
Phenotypes TSC-LAM incidence About 30% Therapeutic review 2024 https://doi.org/10.3390/biom14091190 (conte2024therapeuticapproachesto pages 1-2)
Diagnostics Current clinical diagnostic rule Definite TSC: 2 major, or 1 major + ≥2 minor, or pathogenic TSC1/TSC2 variant Clinical criteria table image/summary 2023 https://doi.org/10.3390/genes14020433 (jurca2023tuberoussclerosistype media b5f360a7)
Diagnostics Median time-to-diagnosis (TTD), TSC-specific vs non-specific manifestations 1 month (range 1–27) vs 11 months (range 1–84); p=0.0035 Japan JMDC claims database, Cohort 1 2024 https://doi.org/10.1186/s13023-024-03460-y (okanishi2024diagnosticflowanalysis pages 4-5)
Diagnostics Longest TTD by presentation Renal tumor median 23 months (up to 91 months) Japan JMDC claims database 2024 https://doi.org/10.1186/s13023-024-03460-y (okanishi2024diagnosticflowanalysis pages 1-2, okanishi2024diagnosticflowanalysis pages 7-9)
Diagnostics TTD with vs without TSC clinic (all manifestations) 3.0 months (range 1–49) vs 13.0 months (range 1–91); p=0.0966 Japan JMDC claims database 2024 https://doi.org/10.1186/s13023-024-03460-y (okanishi2024diagnosticflowanalysis pages 5-7)
Diagnostics TTD for epilepsy with vs without TSC clinic 11.5 months (range 1–31) vs 19.0 months (range 1–89); p=0.0379 Japan JMDC claims database 2024 https://doi.org/10.1186/s13023-024-03460-y (okanishi2024diagnosticflowanalysis pages 5-7, okanishi2024diagnosticflowanalysis pages 1-2)
Diagnostics Manifestation frequencies in delayed-diagnosis cohort Epilepsy 29.2%; renal tumor 9.4%; brain/intraventricular tumor 8.5% Japan JMDC claims database, Cohort 1 2024 https://doi.org/10.1186/s13023-024-03460-y (okanishi2024diagnosticflowanalysis pages 4-5, okanishi2024diagnosticflowanalysis pages 5-7)
Diagnostics Early-life manifestations Cardiac rhabdomyoma 54.8%; epilepsy 38.1% Japan JMDC claims database, Cohort 2 2024 https://doi.org/10.1186/s13023-024-03460-y (okanishi2024diagnosticflowanalysis pages 5-7, okanishi2024diagnosticflowanalysis pages 7-9)
Treatment Everolimus seizure response (real world) 14/45 (31%) achieved ≥50% seizure reduction; any reduction 68%; ≥30% reduction 44% Norway/Denmark real-world cohort, 64 treated patients 2023 https://doi.org/10.1186/s13023-023-02982-1 (cockerell2023effectivenessandsafety pages 1-2, cockerell2023effectivenessandsafety pages 4-6, cockerell2023effectivenessandsafety pages 2-4)
Treatment Everolimus seizure response by age <18 y: 46% responders; ≥18 y: 14% responders Real-world cohort 2023 https://doi.org/10.1186/s13023-023-02982-1 (cockerell2023effectivenessandsafety pages 1-2)
Treatment Everolimus seizure response by country Norway: 4/26 (15%); Denmark: 10/19 (53%) Real-world cohort 2023 https://doi.org/10.1186/s13023-023-02982-1 (cockerell2023effectivenessandsafety pages 4-6)
Treatment Everolimus rAML response (real world) Largest lesion LD response ≥30% decrease: 35%; mean bilateral diameter response: 38%; stable size 52%/59%; progression 14%/3% Real-world cohort, 29 patients with rAML imaging 2023 https://doi.org/10.1186/s13023-023-02982-1 (cockerell2023effectivenessandsafety pages 4-6)
Treatment rAML burden change on everolimus (real world) Lesions >4 cm decreased from 75% to 55%; lesions >6 cm from 31% to 24% Real-world cohort 2023 https://doi.org/10.1186/s13023-023-02982-1 (cockerell2023effectivenessandsafety pages 4-6)
Treatment SEGA response (real world examples) Volume reductions of 71%, 43%, and 48% after 39, 34, and 82 months Real-world cohort 2023 https://doi.org/10.1186/s13023-023-02982-1 (cockerell2023effectivenessandsafety pages 1-2, cockerell2023effectivenessandsafety pages 6-7)
Treatment Everolimus adverse effects (real world) Any AE 61/64 (95%); stomatitis/oral ulceration 63%; URTI 38%; rash 27%; fatigue 22% Real-world cohort 2023 https://doi.org/10.1186/s13023-023-02982-1 (cockerell2023effectivenessandsafety pages 1-2, cockerell2023effectivenessandsafety pages 6-7)
Treatment Everolimus lab abnormalities (real world) Hypercholesterolemia 41%; anaemia 30%; leucopoenia 25% Real-world cohort 2023 https://doi.org/10.1186/s13023-023-02982-1 (cockerell2023effectivenessandsafety pages 1-2, cockerell2023effectivenessandsafety pages 7-9)
Treatment Everolimus severe toxicity/discontinuation (real world) Grade 3–4 AEs 36%; hospitalization/prolonged hospitalization 34%; discontinuation 9/64 (14%); two life-threatening events Real-world cohort 2023 https://doi.org/10.1186/s13023-023-02982-1 (cockerell2023effectivenessandsafety pages 1-2, cockerell2023effectivenessandsafety pages 7-9, cockerell2023effectivenessandsafety pages 10-12)
Treatment EXIST-2 AML response 42% response (33/79; 95% CI 31–53%) vs 0% placebo; median response time 2–9 months EXIST-2 everolimus trial, adults with AML 2024 review summarizing prior trial https://doi.org/10.1590/2175-8239-jbn-2024-0013en (monich2024tuberoussclerosiscomplex pages 5-7)
Treatment EXIST-2 extension AML response Response increased from 42% to 54%; ~97% showed some AML reduction EXIST-2 extension 2024 review summarizing prior trial https://doi.org/10.1590/2175-8239-jbn-2024-0013en (monich2024tuberoussclerosiscomplex pages 5-7)
Quality of life & costs EQ-5D-3L index and VAS TSC: TTO 0.705; VAS 0.577 vs IGE: 0.897/0.813 vs FE: 0.879/0.769 Germany matched case-control study, 92 per cohort 2024 https://doi.org/10.1186/s42466-024-00323-6 (lappe2024amulticentermatched pages 1-2)
Quality of life & costs QOLIE-31 and stigma QOLIE-31: TSC 57.7 vs IGE 66.6 vs FE 57.6; rESS stigma: TSC 3.97 vs IGE 1.48 vs FE 2.45 Germany matched case-control study 2024 https://doi.org/10.1186/s42466-024-00323-6 (lappe2024amulticentermatched pages 1-2)
Quality of life & costs Depression/adverse-event burden NDDI-E 13.1 vs IGE 11.2; LAEP 42.7 vs IGE 37.5 Germany matched case-control study 2024 https://doi.org/10.1186/s42466-024-00323-6 (lappe2024amulticentermatched pages 1-2)
Quality of life & costs Direct costs Mean total direct costs: TSC €7,602 (median €2,620) vs IGE €1,919 vs FE €2,598 Germany matched case-control study 2024 https://doi.org/10.1186/s42466-024-00323-6 (lappe2024amulticentermatched pages 1-2)
Quality of life & costs Indirect productivity costs Mean over 3 months: TSC €7,185 (median €11,925) vs IGE €3,599 vs FE €5,082 Germany matched case-control study 2024 https://doi.org/10.1186/s42466-024-00323-6 (lappe2024amulticentermatched pages 1-2, lappe2024amulticentermatched pages 10-11)
Quality of life & costs Unemployment 60% in TSC vs 23% in IGE vs 34% in FE Germany matched case-control study 2024 https://doi.org/10.1186/s42466-024-00323-6 (lappe2024amulticentermatched pages 1-2, lappe2024amulticentermatched pages 10-11)

Table: This table compiles high-yield quantitative findings for tuberous sclerosis complex across epidemiology, genetics, diagnostics, treatment, and burden of illness. It is useful as a compact evidence summary for knowledge-base population and citation tracking.


1. Disease information

1.1 What is the disease?

  • Definition: TSC is described as “a rare multisystem disorder caused by heterozygous loss-of-function pathogenic variants in the tumour suppressor genes TSC1 and TSC2” leading to mTORC1 hyperactivation and benign tumors in multiple organs, plus frequent epilepsy (conte2024therapeuticapproachesto pages 1-2).
  • Alternative definition (genetics-focused): TSC is the “prototypical mTORopathy,” where variants in TSC1/TSC2 disrupt the TSC protein complex, a negative regulator of the mechanistic target of rapamycin pathway (man2024thegeneticsof pages 1-2).

1.2 Key identifiers (available from retrieved evidence)

Not retrieved in current tool run: OMIM/Orphanet/MeSH/ICD-11 identifiers and canonical synonym lists from those databases. (The present report therefore cites primary/review literature and claims-based ICD-10 mapping, but cannot provide authoritative OMIM/Orphanet IDs without additional retrieval.)

1.3 Synonyms / alternative names

Commonly used naming in the retrieved literature includes: - “tuberous sclerosis complex” (TSC) (man2024thegeneticsof pages 1-2, conte2024therapeuticapproachesto pages 1-2) - “tuberous sclerosis” (used in some clinical/claims contexts) (kishida2025epidemiologicalinsightsand pages 1-2)

1.4 Evidence sources

This report integrates: - Aggregated disease-level resources and cohorts (claims database epidemiology; multicenter real-world therapeutic outcome study) (cockerell2023effectivenessandsafety pages 1-2, okanishi2024diagnosticflowanalysis pages 4-5, kishida2025epidemiologicalinsightsand pages 1-2) - Reviews synthesizing clinical genetics and management (man2024thegeneticsof pages 1-2, conte2024therapeuticapproachesto pages 1-2, monich2024tuberoussclerosiscomplex pages 1-2)


2. Etiology

2.1 Disease causal factors

Abstract quote (Genetics review, 2024): TSC is “characterized by the development of benign tumors in multiple organs” and “pathogenic variants in TSC1 or TSC2 disrupt the TSC protein complex, a negative regulator of the mTOR pathway.” (man2024thegeneticsof pages 1-2)

2.2 Risk factors

  • Genetic risk: Presence of pathogenic TSC1/TSC2 variants. Variant location/domain in TSC2 is associated with severity in review synthesis (man2024thegeneticsof pages 1-2).
  • Somatic mosaicism / undetected variants: ~15% of patients have no mutation identified by conventional testing, with many presumed due to somatic TSC1/TSC2 variants (man2024thegeneticsof pages 1-2).

2.3 Protective factors

No specific protective genetic variants or environmental protective factors were identified in the retrieved evidence set.

2.4 Gene–environment interactions

No clear gene–environment interactions were identified in the retrieved evidence set.


3. Phenotypes (clinical manifestations)

TSC manifests across the CNS, kidney, skin, heart, lungs, and other organs (conte2024therapeuticapproachesto pages 1-2, monich2024tuberoussclerosiscomplex pages 1-2). A subset of phenotype frequency estimates from recent sources is listed below.

3.1 Neurologic phenotypes

  1. Epilepsy
  2. Type: symptom/clinical syndrome
  3. Frequency: reported 62–93% in a 2024 therapeutic review (conte2024therapeuticapproachesto pages 1-2).
  4. Drug-resistance: “pharmacoresistant epilepsy… affecting approximately two-thirds of patients” (2024 review) (racioppi2024prenatalmtorinhibitors pages 1-2).
  5. HPO suggestions: HP:0001250 (Seizures); HP:0012469 (Infantile spasms) (conceptually aligned with reported early epilepsy burden) (conte2024therapeuticapproachesto pages 1-2, racioppi2024prenatalmtorinhibitors pages 2-3).

  6. Neurodevelopmental and neuropsychiatric involvement (TAND, autism, intellectual disability)

  7. Type: behavioral/psychiatric + developmental
  8. Frequency: about half with intellectual disability and a similar proportion with autism spectrum disorder (racioppi2024prenatalmtorinhibitors pages 1-2). TAND is described as affecting ~90% across the lifetime (racioppi2024prenatalmtorinhibitors pages 2-3).
  9. HPO suggestions: HP:0000717 (Autism); HP:0001249 (Intellectual disability); HP:0001263 (Global developmental delay).

  10. CNS lesions

  11. Type: imaging/pathology findings
  12. Includes cortical tubers, subependymal nodules, radial migration lines, and SEGA (racioppi2024prenatalmtorinhibitors pages 1-2, conte2024therapeuticapproachesto pages 1-2).
  13. SEGA prevalence: “up to 20% among TSC patients” (conte2024therapeuticapproachesto pages 1-2).
  14. HPO suggestions: HP:0009720 (Cortical tuber); HP:0009718 (Subependymal nodule); HP:0006787 (Subependymal giant cell astrocytoma).

3.2 Renal phenotypes

  • Renal angiomyolipomas (AMLs), renal cysts, RCC risk are emphasized as clinically important; a nephrology review notes kidney involvement includes AML and cystic disease and can lead to bleeding/pain/renal function loss (monich2024tuberoussclerosiscomplex pages 1-2).
  • HPO suggestions: HP:0006770 (Renal angiomyolipoma); HP:0000107 (Renal cysts).

3.3 Pulmonary phenotypes

3.4 Cardiac phenotypes

3.5 Skin phenotypes

  • Common features include facial angiofibromas, hypomelanotic macules, shagreen patches, and ungual fibromas (diagnostic criteria table) (jurca2023tuberoussclerosistype media b5f360a7).
  • HPO suggestions: HP:0000957 (Facial angiofibroma); HP:0001010 (Hypopigmented skin lesions); HP:0000976 (Shagreen patch); HP:0009728 (Ungual fibromas).

Quality-of-life impact (recent quantitative evidence)

Adults with TSC-related epilepsy have substantially reduced generic QoL compared with other epilepsy types, with EQ-5D-3L index (TTO) 0.705 and EQ-VAS 0.577 reported in a 2024 German matched case–control study (lappe2024amulticentermatched pages 1-2).


4. Genetic / molecular information

4.1 Causal genes

4.2 Pathogenic variants and molecular diagnostic yield

4.3 Somatic vs germline; two-hit model

4.4 Mechanistic pathway (current consensus)

A mechanistic chain supported by 2024 evidence: 1. TSC1/TSC2 loss of function disrupts the TSC1/2 complex (dufneralmeida2024molecularandfunctional pages 1-2). 2. The complex is a GAP for RHEB; inactivation increases RHEB-GTP (dufneralmeida2024molecularandfunctional pages 1-2). 3. Increased RHEB-GTP activates mTORC1, elevating downstream phosphorylation and increasing anabolic metabolism/cell growth (dufneralmeida2024molecularandfunctional pages 1-2). 4. Tissue-level consequences: hamartomas and CNS malformations/lesions, epilepsy, kidney tumors (conte2024therapeuticapproachesto pages 1-2, man2024thegeneticsof pages 1-2, monich2024tuberoussclerosiscomplex pages 1-2).

Direct quote (mechanism, 2024 study): “Inactivation of the TSC1/2 results in increased levels of RHEB-GTP, activation of TORC1 kinase activity… thus leading to up-regulation of anabolic metabolism and excessive cell growth.” (dufneralmeida2024molecularandfunctional pages 1-2)

4.5 Modifier genes, epigenetics, chromosomal abnormalities

Not established from the retrieved evidence set. (The report therefore cannot reliably list validated modifier loci or epigenetic signatures for TSC without additional retrieval.)


5. Environmental information

TSC is primarily a monogenic disorder; no specific environmental triggers, lifestyle factors, or infectious causes were identified in the retrieved evidence set (man2024thegeneticsof pages 1-2, conte2024therapeuticapproachesto pages 1-2).


6. Mechanism / pathophysiology (expanded)

6.1 Molecular pathways

GO term suggestions (biological process): - GO:0008283 (cell population proliferation) - GO:0006412 (translation) / GO:0006091 (generation of precursor metabolites and energy) as downstream readouts of anabolic metabolism (supported conceptually by “up-regulation of anabolic metabolism”) (dufneralmeida2024molecularandfunctional pages 1-2) - GO:0010506 (regulation of autophagy) as a canonical mTOR-regulated process (not explicitly stated in retrieved excerpts; include as hypothesis-level annotation)

6.2 Cellular processes

6.3 Cell types (CL suggestions)

Based on organs and lesions described: - CL:0000540 (neuron) and CL:0000127 (astrocyte) for CNS involvement and glial components of tubers/SEGAs (CNS lesion context) (conte2024therapeuticapproachesto pages 1-2). - CL:0000887 (smooth muscle cell) as a plausible LAM-relevant cell type (LAM mentioned but not mechanistically detailed in retrieved excerpts) (conte2024therapeuticapproachesto pages 1-2).

6.4 Causal chain to clinical manifestations (examples)


7. Anatomical structures affected

7.1 Organ-level involvement (with UBERON suggestions)

7.2 Subcellular localization (GO cellular component suggestions)

Not explicitly specified in retrieved evidence; mechanistic elements imply cytosolic signaling complexes: - GO:0005829 (cytosol) - GO:0016020 (membrane) (RHEB signaling context; not explicitly stated in excerpts)


8. Temporal development

8.1 Onset

8.2 Progression

Course is lifelong and multisystem; claims and real-world treatment studies imply need for ongoing surveillance and long-term therapy monitoring (monich2024tuberoussclerosiscomplex pages 1-2, cockerell2023effectivenessandsafety pages 1-2).


9. Inheritance and population

9.1 Epidemiology (recent quantitative data)

9.2 Inheritance pattern and penetrance

9.3 Demographics


10. Diagnostics

10.1 Clinical criteria

A diagnostic criteria table was retrieved as an image (Table 2) listing major and minor features and genetic criteria.

  • Rule (as summarized in the figure extraction): Definite diagnosis can be made with two major features, or one major + ≥2 minor features, or identification of a pathogenic TSC1/TSC2 variant (jurca2023tuberoussclerosistype media b5f360a7).

10.2 Genetic testing (utility)

10.3 Real-world diagnostic delay and the role of TSC clinics (2024)

A 2024 Japanese claims analysis quantified diagnostic delay: - Median time-to-diagnosis for TSC-specific manifestations was 1 month vs 11 months for more non-specific manifestations (p=0.0035) (okanishi2024diagnosticflowanalysis pages 4-5). - For epilepsy, care at a facility with a TSC clinic shortened median time-to-diagnosis (11.5 vs 19.0 months, p=0.0379) (okanishi2024diagnosticflowanalysis pages 5-7).


11. Outcome / prognosis (burden, morbidity)

11.1 Major morbidity/mortality themes

A 2024 therapeutic review states that “brain tumours, sudden unexpected death from epilepsy, and respiratory conditions are the three leading causes of morbidity and mortality” (conte2024therapeuticapproachesto pages 1-2).

11.2 Quality of life and socioeconomic burden (2024)

A 2024 German matched case–control analysis provides quantified burden in adults with TSC-related epilepsy: - EQ-5D-3L: TTO 0.705; VAS 0.577 (lower than other epilepsy cohorts) (lappe2024amulticentermatched pages 1-2). - Costs: mean total direct costs €7,602 (median €2,620) and indirect productivity costs €7,185 over 3 months (median €11,925) (lappe2024amulticentermatched pages 1-2). - Unemployment: 60% in TSC cohort (lappe2024amulticentermatched pages 1-2).


12. Treatment

12.1 Pharmacotherapy: mTOR inhibitors (everolimus/sirolimus)

Mechanism: mTOR inhibitors counteract mTORC1 hyperactivation due to TSC1/TSC2 loss (conte2024therapeuticapproachesto pages 1-2, monich2024tuberoussclerosiscomplex pages 1-2).

Real-world effectiveness and safety (Dec 2023): Multicenter Norway/Denmark cohort (N=64) treated with everolimus: - Epilepsy: ≥50% seizure reduction in 31% (14/45) (cockerell2023effectivenessandsafety pages 4-6). - Renal AML: response (≥30% LD reduction) ~35–38% with most others stable (cockerell2023effectivenessandsafety pages 4-6). - SEGA: example volume reductions 71%, 43%, 48% after long-term treatment (cockerell2023effectivenessandsafety pages 6-7). - Adverse events: 95% experienced AEs; stomatitis/oral ulceration 63%; URTI 38%; grade 3–4 AEs 36%; discontinuation 14% (9/64) (cockerell2023effectivenessandsafety pages 1-2, cockerell2023effectivenessandsafety pages 7-9).

Randomized trial evidence summarized in 2024 nephrology review: EXIST-2 AML response 42% vs 0% placebo; extension response increased to 54%, with ~97% showing some AML reduction (monich2024tuberoussclerosiscomplex pages 5-7).

MAXO suggestions: - Everolimus/sirolimus therapy: MAXO:0000748 (mTOR inhibitor therapy) (suggested; ontology mapping should be verified). - Embolization/nephrectomy for hemorrhage/complications: MAXO terms for embolization/nephrectomy (not retrieved directly, but surgical reserve for hemorrhage described) (monich2024tuberoussclerosiscomplex pages 1-2).

12.2 Epilepsy-specific therapy (including early/preventive concepts)

12.3 Surgical and interventional

12.4 Experimental / ongoing clinical trials (ClinicalTrials.gov)

Trials retrieved in the tool run include: - NCT04987463: rapamycin vs vigabatrin prevention of TSC symptoms in infants (phase 2/3) (clinical trials search result list) - NCT05534672: placebo-controlled rapamycin in drug-resistant epilepsy associated with TSC (phase 3; recruiting) (clinical trials search result list) - Multiple topical rapamycin trials for facial angiofibromas (e.g., NCT01526356, NCT03140449) (clinical trials search result list)


13. Prevention

13.1 Primary prevention

Not currently feasible for monogenic TSC except via reproductive options; no population-level primary prevention strategies were identified in the retrieved evidence.

13.2 Secondary prevention (early detection and early intervention)

13.3 Tertiary prevention


14. Other species / natural disease

Not addressed in the retrieved evidence set.


15. Model organisms

The prenatal mTOR inhibitor review reports three prenatal mouse studies and human pregnancy case reports/series (10 treated pregnant women) evaluating prenatal mTOR inhibitor exposure and rhabdomyoma reduction (racioppi2024prenatalmtorinhibitors pages 1-2). Additional organism models (e.g., conditional Tsc1/Tsc2 mice, zebrafish, iPSC-derived models) were not retrieved in this tool run.


Recent developments & real-world implementations (2023–2024 emphasis)

  1. Real-world everolimus effectiveness and toxicity quantification (2023): multicenter observational outcomes provide practical estimates of seizure response (31%), AML shrinkage/stability, high AE burden (95%), and discontinuation (14%), underscoring the need for “close follow-up” in routine care (cockerell2023effectivenessandsafety pages 1-2).
  2. Health-system pathways for earlier diagnosis (2024): claims-based analysis shows diagnostic delay is substantial for non-specific presentations and that specialty TSC clinics shorten time-to-diagnosis for epilepsy (p=0.0379), supporting center-of-excellence models (okanishi2024diagnosticflowanalysis pages 5-7).
  3. Nephrology perspective (2024): reinforces shift toward mTOR inhibitors as first-line for renal manifestations and reserves invasive procedures for refractory complications (monich2024tuberoussclerosiscomplex pages 1-2).
  4. Prenatal/early mTOR inhibition research direction (2024): early intervention strategies are being explored to reduce prenatal rhabdomyomas and potentially influence neurologic outcomes, but safety and neurodevelopmental benefit remain uncertain (racioppi2024prenatalmtorinhibitors pages 1-2).

Limitations of this tool run (data gaps)

  • OMIM/Orphanet/MeSH/ICD-11 codes were not retrieved; thus identifiers and synonyms may be incomplete.
  • PMIDs were not available in the retrieved snippets for most sources; DOIs and journal metadata are provided.
  • Modifier genes, epigenetic signatures, omics profiles, and comprehensive model organism inventories were not available in the current evidence set.

Key source URLs (with publication dates)

References

  1. (man2024thegeneticsof pages 1-2): Alice Man, Matteo Di Scipio, Shan Grewal, Yujin Suk, Elisabetta Trinari, Resham Ejaz, and Robyn Whitney. The genetics of tuberous sclerosis complex and related mtoropathies: current understanding and future directions. Genes, 15:332, Mar 2024. URL: https://doi.org/10.3390/genes15030332, doi:10.3390/genes15030332. This article has 47 citations.

  2. (conte2024therapeuticapproachesto pages 1-2): Elena Conte, Brigida Boccanegra, Giorgia Dinoi, Michael Pusch, Annamaria De Luca, Antonella Liantonio, and Paola Imbrici. Therapeutic approaches to tuberous sclerosis complex: from available therapies to promising drug targets. Biomolecules, 14:1190, Sep 2024. URL: https://doi.org/10.3390/biom14091190, doi:10.3390/biom14091190. This article has 19 citations.

  3. (racioppi2024prenatalmtorinhibitors pages 1-2): Giacomo Racioppi, Martina Proietti Checchi, Giorgia Sforza, Alessandra Voci, Luigi Mazzone, Massimiliano Valeriani, and Romina Moavero. Prenatal mtor inhibitors in tuberous sclerosis complex: current insights and future directions. Journal of Clinical Medicine, 13:6335, Oct 2024. URL: https://doi.org/10.3390/jcm13216335, doi:10.3390/jcm13216335. This article has 8 citations.

  4. (dufneralmeida2024molecularandfunctional pages 1-2): Luiz Gustavo Dufner-Almeida, Laís F. M. Cardozo, Mariana R. Schwind, Danielly Carvalho, Juliana Paula G. Almeida, Andrea Maria Cappellano, Thiago G. P. Alegria, Santoesha Nanhoe, Mark Nellist, Maria Rita Passos-Bueno, Silvana Chiavegatto, Nasjla S. Silva, Sérgio Rosemberg, Ana Paula A. Pereira, Sérgio Antônio Antoniuk, and Luciana A. Haddad. Molecular and functional assessment of tsc1 and tsc2 in individuals with tuberous sclerosis complex. Genes, 15:1432, Nov 2024. URL: https://doi.org/10.3390/genes15111432, doi:10.3390/genes15111432. This article has 9 citations.

  5. (monich2024tuberoussclerosiscomplex pages 1-2): Aline Grosskopf Monich, John J. Bissler, and Fellype Carvalho Barreto. Tuberous sclerosis complex and the kidneys: what nephrologists need to know. Brazilian Journal of Nephrology, Sep 2024. URL: https://doi.org/10.1590/2175-8239-jbn-2024-0013en, doi:10.1590/2175-8239-jbn-2024-0013en. This article has 2 citations.

  6. (kishida2025epidemiologicalinsightsand pages 1-2): Satoshi Kishida, Eiji Nakatani, Takeshi Usui, Shuhei Fujimoto, Seiichiro Yamamoto, and Yoshiki Miyachi. Epidemiological insights and healthcare challenges of tuberous sclerosis complex in shizuoka prefecture: a retrospective cohort study. Orphanet Journal of Rare Diseases, May 2025. URL: https://doi.org/10.1186/s13023-025-03799-w, doi:10.1186/s13023-025-03799-w. This article has 2 citations and is from a peer-reviewed journal.

  7. (kishida2025epidemiologicalinsightsand pages 2-4): Satoshi Kishida, Eiji Nakatani, Takeshi Usui, Shuhei Fujimoto, Seiichiro Yamamoto, and Yoshiki Miyachi. Epidemiological insights and healthcare challenges of tuberous sclerosis complex in shizuoka prefecture: a retrospective cohort study. Orphanet Journal of Rare Diseases, May 2025. URL: https://doi.org/10.1186/s13023-025-03799-w, doi:10.1186/s13023-025-03799-w. This article has 2 citations and is from a peer-reviewed journal.

  8. (kishida2025epidemiologicalinsightsand pages 5-6): Satoshi Kishida, Eiji Nakatani, Takeshi Usui, Shuhei Fujimoto, Seiichiro Yamamoto, and Yoshiki Miyachi. Epidemiological insights and healthcare challenges of tuberous sclerosis complex in shizuoka prefecture: a retrospective cohort study. Orphanet Journal of Rare Diseases, May 2025. URL: https://doi.org/10.1186/s13023-025-03799-w, doi:10.1186/s13023-025-03799-w. This article has 2 citations and is from a peer-reviewed journal.

  9. (racioppi2024prenatalmtorinhibitors pages 2-3): Giacomo Racioppi, Martina Proietti Checchi, Giorgia Sforza, Alessandra Voci, Luigi Mazzone, Massimiliano Valeriani, and Romina Moavero. Prenatal mtor inhibitors in tuberous sclerosis complex: current insights and future directions. Journal of Clinical Medicine, 13:6335, Oct 2024. URL: https://doi.org/10.3390/jcm13216335, doi:10.3390/jcm13216335. This article has 8 citations.

  10. (jurca2023tuberoussclerosistype media b5f360a7): Claudia Maria Jurca, Kinga Kozma, Codruta Diana Petchesi, Dana Carmen Zaha, Ioan Magyar, Mihai Munteanu, Lucian Faur, Aurora Jurca, Dan Bembea, Emilia Severin, and Alexandru Daniel Jurca. Tuberous sclerosis, type ii diabetes mellitus and the pi3k/akt/mtor signaling pathways—case report and literature review. Genes, 14:433, Feb 2023. URL: https://doi.org/10.3390/genes14020433, doi:10.3390/genes14020433. This article has 23 citations.

  11. (okanishi2024diagnosticflowanalysis pages 4-5): Tohru Okanishi, Ikuo Fujimori, Mariko Yamada, Takumi Tajima, Mari Wataya-Kaneda, Kuniaki Seyama, and Takashi Hatano. Diagnostic flow analysis of tuberous sclerosis complex in japan: a retrospective claims database study. Orphanet Journal of Rare Diseases, Dec 2024. URL: https://doi.org/10.1186/s13023-024-03460-y, doi:10.1186/s13023-024-03460-y. This article has 2 citations and is from a peer-reviewed journal.

  12. (okanishi2024diagnosticflowanalysis pages 1-2): Tohru Okanishi, Ikuo Fujimori, Mariko Yamada, Takumi Tajima, Mari Wataya-Kaneda, Kuniaki Seyama, and Takashi Hatano. Diagnostic flow analysis of tuberous sclerosis complex in japan: a retrospective claims database study. Orphanet Journal of Rare Diseases, Dec 2024. URL: https://doi.org/10.1186/s13023-024-03460-y, doi:10.1186/s13023-024-03460-y. This article has 2 citations and is from a peer-reviewed journal.

  13. (okanishi2024diagnosticflowanalysis pages 7-9): Tohru Okanishi, Ikuo Fujimori, Mariko Yamada, Takumi Tajima, Mari Wataya-Kaneda, Kuniaki Seyama, and Takashi Hatano. Diagnostic flow analysis of tuberous sclerosis complex in japan: a retrospective claims database study. Orphanet Journal of Rare Diseases, Dec 2024. URL: https://doi.org/10.1186/s13023-024-03460-y, doi:10.1186/s13023-024-03460-y. This article has 2 citations and is from a peer-reviewed journal.

  14. (okanishi2024diagnosticflowanalysis pages 5-7): Tohru Okanishi, Ikuo Fujimori, Mariko Yamada, Takumi Tajima, Mari Wataya-Kaneda, Kuniaki Seyama, and Takashi Hatano. Diagnostic flow analysis of tuberous sclerosis complex in japan: a retrospective claims database study. Orphanet Journal of Rare Diseases, Dec 2024. URL: https://doi.org/10.1186/s13023-024-03460-y, doi:10.1186/s13023-024-03460-y. This article has 2 citations and is from a peer-reviewed journal.

  15. (cockerell2023effectivenessandsafety pages 1-2): Ine Cockerell, Jakob Christensen, Christina E. Hoei-Hansen, Lotte Holst, Mikkel Grenaa Frederiksen, Aart Imran Issa-Epe, Bård Nedregaard, Ragnar Solhoff, Ketil Heimdal, Cecilie Johannessen Landmark, Caroline Lund, and Terje Nærland. Effectiveness and safety of everolimus treatment in patients with tuberous sclerosis complex in real-world clinical practice. Orphanet Journal of Rare Diseases, Dec 2023. URL: https://doi.org/10.1186/s13023-023-02982-1, doi:10.1186/s13023-023-02982-1. This article has 26 citations and is from a peer-reviewed journal.

  16. (cockerell2023effectivenessandsafety pages 4-6): Ine Cockerell, Jakob Christensen, Christina E. Hoei-Hansen, Lotte Holst, Mikkel Grenaa Frederiksen, Aart Imran Issa-Epe, Bård Nedregaard, Ragnar Solhoff, Ketil Heimdal, Cecilie Johannessen Landmark, Caroline Lund, and Terje Nærland. Effectiveness and safety of everolimus treatment in patients with tuberous sclerosis complex in real-world clinical practice. Orphanet Journal of Rare Diseases, Dec 2023. URL: https://doi.org/10.1186/s13023-023-02982-1, doi:10.1186/s13023-023-02982-1. This article has 26 citations and is from a peer-reviewed journal.

  17. (cockerell2023effectivenessandsafety pages 2-4): Ine Cockerell, Jakob Christensen, Christina E. Hoei-Hansen, Lotte Holst, Mikkel Grenaa Frederiksen, Aart Imran Issa-Epe, Bård Nedregaard, Ragnar Solhoff, Ketil Heimdal, Cecilie Johannessen Landmark, Caroline Lund, and Terje Nærland. Effectiveness and safety of everolimus treatment in patients with tuberous sclerosis complex in real-world clinical practice. Orphanet Journal of Rare Diseases, Dec 2023. URL: https://doi.org/10.1186/s13023-023-02982-1, doi:10.1186/s13023-023-02982-1. This article has 26 citations and is from a peer-reviewed journal.

  18. (cockerell2023effectivenessandsafety pages 6-7): Ine Cockerell, Jakob Christensen, Christina E. Hoei-Hansen, Lotte Holst, Mikkel Grenaa Frederiksen, Aart Imran Issa-Epe, Bård Nedregaard, Ragnar Solhoff, Ketil Heimdal, Cecilie Johannessen Landmark, Caroline Lund, and Terje Nærland. Effectiveness and safety of everolimus treatment in patients with tuberous sclerosis complex in real-world clinical practice. Orphanet Journal of Rare Diseases, Dec 2023. URL: https://doi.org/10.1186/s13023-023-02982-1, doi:10.1186/s13023-023-02982-1. This article has 26 citations and is from a peer-reviewed journal.

  19. (cockerell2023effectivenessandsafety pages 7-9): Ine Cockerell, Jakob Christensen, Christina E. Hoei-Hansen, Lotte Holst, Mikkel Grenaa Frederiksen, Aart Imran Issa-Epe, Bård Nedregaard, Ragnar Solhoff, Ketil Heimdal, Cecilie Johannessen Landmark, Caroline Lund, and Terje Nærland. Effectiveness and safety of everolimus treatment in patients with tuberous sclerosis complex in real-world clinical practice. Orphanet Journal of Rare Diseases, Dec 2023. URL: https://doi.org/10.1186/s13023-023-02982-1, doi:10.1186/s13023-023-02982-1. This article has 26 citations and is from a peer-reviewed journal.

  20. (cockerell2023effectivenessandsafety pages 10-12): Ine Cockerell, Jakob Christensen, Christina E. Hoei-Hansen, Lotte Holst, Mikkel Grenaa Frederiksen, Aart Imran Issa-Epe, Bård Nedregaard, Ragnar Solhoff, Ketil Heimdal, Cecilie Johannessen Landmark, Caroline Lund, and Terje Nærland. Effectiveness and safety of everolimus treatment in patients with tuberous sclerosis complex in real-world clinical practice. Orphanet Journal of Rare Diseases, Dec 2023. URL: https://doi.org/10.1186/s13023-023-02982-1, doi:10.1186/s13023-023-02982-1. This article has 26 citations and is from a peer-reviewed journal.

  21. (monich2024tuberoussclerosiscomplex pages 5-7): Aline Grosskopf Monich, John J. Bissler, and Fellype Carvalho Barreto. Tuberous sclerosis complex and the kidneys: what nephrologists need to know. Brazilian Journal of Nephrology, Sep 2024. URL: https://doi.org/10.1590/2175-8239-jbn-2024-0013en, doi:10.1590/2175-8239-jbn-2024-0013en. This article has 2 citations.

  22. (lappe2024amulticentermatched pages 1-2): Lisa Lappe, Christoph Hertzberg, Susanne Knake, Markus Knuf, Felix von Podewils, Laurent M. Willems, Stjepana Kovac, Johann Philipp Zöllner, Matthias Sauter, Gerhard Kurlemann, Thomas Mayer, Astrid Bertsche, Klaus Marquard, Sascha Meyer, Hannah Schäfer, Charlotte Thiels, Bianca Zukunft, Susanne Schubert-Bast, Jens-Peter Reese, Felix Rosenow, and Adam Strzelczyk. A multicenter, matched case–control analysis comparing burden of illness among patients with tuberous sclerosis complex related epilepsy, generalized idiopathic epilepsy, and focal epilepsy in germany. Neurological Research and Practice, May 2024. URL: https://doi.org/10.1186/s42466-024-00323-6, doi:10.1186/s42466-024-00323-6. This article has 8 citations and is from a peer-reviewed journal.

  23. (lappe2024amulticentermatched pages 10-11): Lisa Lappe, Christoph Hertzberg, Susanne Knake, Markus Knuf, Felix von Podewils, Laurent M. Willems, Stjepana Kovac, Johann Philipp Zöllner, Matthias Sauter, Gerhard Kurlemann, Thomas Mayer, Astrid Bertsche, Klaus Marquard, Sascha Meyer, Hannah Schäfer, Charlotte Thiels, Bianca Zukunft, Susanne Schubert-Bast, Jens-Peter Reese, Felix Rosenow, and Adam Strzelczyk. A multicenter, matched case–control analysis comparing burden of illness among patients with tuberous sclerosis complex related epilepsy, generalized idiopathic epilepsy, and focal epilepsy in germany. Neurological Research and Practice, May 2024. URL: https://doi.org/10.1186/s42466-024-00323-6, doi:10.1186/s42466-024-00323-6. This article has 8 citations and is from a peer-reviewed journal.

  24. (okanishi2024diagnosticflowanalysis pages 2-4): Tohru Okanishi, Ikuo Fujimori, Mariko Yamada, Takumi Tajima, Mari Wataya-Kaneda, Kuniaki Seyama, and Takashi Hatano. Diagnostic flow analysis of tuberous sclerosis complex in japan: a retrospective claims database study. Orphanet Journal of Rare Diseases, Dec 2024. URL: https://doi.org/10.1186/s13023-024-03460-y, doi:10.1186/s13023-024-03460-y. This article has 2 citations and is from a peer-reviewed journal.