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Possible prevention of tuberous sclerosis complex lesions

Katarzyna Kotulska1, Julita Borkowska, Sergiusz Jozwiak

  • 1Department of Science, The Children's Memorial Health Institute, Warsaw, Poland. k.kotulska@czd.pl

Pediatrics
|June 5, 2013
PubMed

Insights

Early treatment with everolimus, an mTOR inhibitor, significantly reduced brain tumor volume in a child with Tuberous Sclerosis Complex (TSC). This intervention also prevented the development of other TSC-related lesions, suggesting a potential to alter disease progression.

Area of Science:

  • Genetics
  • Oncology
  • Pharmacology

Background:

  • Tuberous Sclerosis Complex (TSC) is a genetic disorder characterized by mammalian target of rapamycin (mTOR) pathway hyperactivation.
  • TSC leads to the development of benign tumors (lesions) in various organs, including the brain, kidneys, and skin.
  • Everolimus, an mTOR inhibitor, has shown efficacy in treating existing TSC-related tumors like subependymal giant cell astrocytomas and renal angiomyolipomas.

Observation:

  • A case study involving monozygotic twin sisters with TSC was conducted.
  • One twin received early treatment with everolimus starting at age 4, while the other received no mTOR inhibitor therapy.
  • Both twins were followed for a 24-month period.

Findings:

  • The twin treated with everolimus experienced a significant reduction in brain tumor volume.
  • The treated twin did not develop facial angiofibromas or renal angiomyolipomas.
  • The untreated twin's brain tumor remained stable, but she developed significant facial angiofibromas and renal angiomyolipomas.

Implications:

  • Early initiation of mTOR inhibition in TSC patients may prevent the formation of new TSC lesions.
  • This approach could potentially modify the natural course of Tuberous Sclerosis Complex.
  • Findings support the role of mTOR signaling in TSC pathogenesis and suggest therapeutic targets for lesion prevention.
Keywords:
SEGAeverolimusmTORpreventionrenal AMLskin lesionstuberous sclerosis complex

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