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Calcification in cerebral parenchyma affects pharmacoresistant epilepsy in tuberous sclerosis

Meng-Na Zhang1, Li-Ping Zou2, Yang-Yang Wang1

  • 1Department of Pediatrics, Chinese PLA General Hospital, Beijing, China.

Seizure
|June 22, 2018
PubMed
Abstract

Insights

Calcification in epileptic foci is a strong indicator of pharmacoresistant epilepsy in Tuberous Sclerosis Complex (TSC) patients, even with rapamycin treatment. This finding aids in evaluating treatment resistance in TSC patients.

Area of Science:

  • Neurology
  • Genetics
  • Pharmacology

Background:

  • Tuberous Sclerosis Complex (TSC) is an autosomal dominant disorder caused by TSC1 or TSC2 gene mutations.
  • It leads to overactivation of the mammalian target of rapamycin (mTOR) signaling pathway.
  • Rapamycin, an mTOR inhibitor, is used for TSC hamartomatous lesions and shows promise for epilepsy control.

Purpose of the Study:

  • To identify risk factors for pharmacoresistant epilepsy in TSC patients undergoing long-term rapamycin therapy.
  • To evaluate the impact of calcified epileptic foci on treatment outcomes.

Main Methods:

  • 108 TSC patients on rapamycin for over 1 year were analyzed.
  • Multiple factor analysis was used to identify seizure control predictors.
  • Subgroup analysis focused on the link between calcified foci and pharmacoresistant epilepsy.

Main Results:

  • 55 out of 108 patients had drug-resistant epilepsy.
  • Cerebral parenchymal calcification was a significant risk factor for pharmacoresistant epilepsy (OR=4.831, P=0.006).
  • 88.2% of patients with calcified foci experienced pharmacoresistant epilepsy.

Conclusions:

  • Calcification in epileptic foci strongly predicts pharmacoresistant epilepsy in TSC patients.
  • This finding is relevant even with concurrent anti-epilepsy drugs and rapamycin.
  • Calcification serves as a valuable marker for assessing pharmacoresistant epilepsy in TSC.
Keywords:
Cerebral parenchyma calcificationComputed tomography(CT)Pharmacoresistant epilepsyTuberous sclerosis(TSC)

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