First-line levetiracetam versus enzyme-inducing antiseizure medication in glioma patients with epilepsy

OBJECTIVE

This study aimed to directly compare the effectiveness of first-line monotherapy levetiracetam (LEV) versus enzyme-inducing antiseizure medications (EIASMs) in glioma patients.

METHODS

In this nationwide retrospective observational cohort study, Grade 2-4 glioma patients were included, with a maximum duration of follow-up of 36 months. Primary outcome was antiseizure medication (ASM) treatment failure for any reason, and secondary outcomes were treatment failure due to uncontrolled seizures and due to adverse effects. For estimation of the association between ASM treatment and ASM treatment failure, multivariate cause-specific cox proportional hazard models were estimated, adjusting for potential confounders.

RESULTS

In the original cohort, a total of 808 brain tumor patients with epilepsy were included, of whom 109 glioma patients were prescribed first-line LEV and 183 glioma patients first-line EIASMs. The EIASM group had a significantly higher risk of treatment failure for any reason compared to LEV (adjusted hazard ratio [aHR] = 1.82, 95% confidence interval [CI] = 1.20-2.75, p = .005). Treatment failure due to uncontrolled seizures did not differ significantly between EIASMs and LEV (aHR = 1.32, 95% CI = .78-2.25, p = .300), but treatment failure due to adverse effects differed significantly (aHR = 4.87, 95% CI = 1.89-12.55, p = .001).

SIGNIFICANCE

In this study, it was demonstrated that LEV had a significantly better effectiveness (i.e., less ASM treatment failure for any reason or due to adverse effects) compared to EIASMs, supporting the current neuro-oncology guideline recommendations to avoid EIASMs in glioma patients.

The usefulness of sLORETA in evaluating the effect of high-dose ARA-C on brain connectivity in patients with acute myeloid leukemia: an exploratory study

Cytosine arabinoside (Ara-C) is one of the key drugs for treating acute myeloid leukemia (AML). High intravenous doses may produce a number of central nervous system (CNS) toxicities and contribute to modifications in brain functional connectivity. sLORETA is a software used for localizing brain electrical activity and functional connectivity. The aim of this study was to apply sLORETA in the evaluation of possible effects of Ara-C on brain connectivity in patients with AML without CNS involvement. We studied eight patients with AML; four were administered standard doses of Ara-C while the other four received high doses. sLORETA was computed from computerized EEG data before treatment and after six months of treatment. Three regions of interest, corresponding to specific combinations of Brodmann areas, were defined. In the patients receiving high-dose Ara-C, a statistically significant reduction in functional connectivity was observed in the fronto-parietal network, which literature data suggest is involved in attentional processes. Our data highlight the possibility of using novel techniques to study potential CNS toxicity of cancer therapy.

Current practice of brain death determination and use of confirmatory tests in an Italian University hospital: a report of 66 cases

BACKGROUND

Time to final brain death (BD) determination is fundamental to rapidly identify donors without organ deterioration. Guidelines for BD determination are different from country to country and, through years, they have been subjected to several revisions, to simplify the procedure. The aim of this study was to describe a one-year experience according to the latest Italian Guidelines for BD in our University hospital and to focus on timing of final BD declaration according to the ancillary tests executed.

METHODS

Sixty-six consecutive inpatients with BD diagnosis were enrolled. Etiological factors, ancillary tests and timing to final declaration were analyzed.

RESULTS

Electroencephalogram (EEG) could be performed without artifacts in all the patients. Time to BD procedure starting depended on whether the demonstration of cerebral circulatory arrest was required, being shorter with EEG only (40±17 min), longer with cerebral blood flow evaluation (175±95 min), minimal with transcranial Doppler (83±32 min), maximal with angiography (165±20 min). None of the patients who initiated BD procedure were found to recover cerebral or brainstem function at the second observation.

CONCLUSIONS

In Italy, the same guidelines ensure the same approach in every hospital, with multi-specialist cooperation. The EEG is mandatory and prompt recognition of the first, flat EEG is fundamental to reduce time to the final procedure. A multimodal neurophysiological approach with trained specialists, neurosonologists and monitoring devices in intensive care units may represents a valid help to further reduce time for BD diagnosis.

Outcome and tolerability of topiramate in brain tumor associated epilepsy

Epilepsy in brain tumor patients is often refractory to pharmacological treatments and can complicate the therapeutic management of these patients. We conducted a prospective, observational study. The aim of this study was to investigate the efficacy and tolerability of topiramate (TPM) in brain tumor associated epilepsy. We studied 47 patients with brain tumors and epilepsy. The entire group was administered AEDs. TPM was the first therapeutic choice in 14 patients, while in the remaining 33 patients previous AEDs were modified and TPM was introduced due to side effects or inefficacy of the first drug. Follow-up ranged from 3 to 48 months (mean 16.5 months). Considering the final follow-up of each patient who assumed TPM for at least 3 months, we observed 45 patients: 25 were seizure free (55.6%), 9 had a reduction of seizure frequency (SF) higher than 50% (20%) and 11 were stable (24.4%). TPM responder rate was 75.6%. Three patients (6.4%) discontinued TPM for severe side effects (1 after 4 months and 2 after 1 month) and 4 (8.5%) had mild and reversible side effects. In the group of patients who had been in therapy with other AEDs prior to entering the study (n = 33), 19 patients had side effects (57.6%). During follow-up, the haematological parameters were in the normative ranges. Tumor-related seizures are difficult to control with AEDs; the precise reasons for this difficulty are not yet clear. Using TPM, we obtained good seizure control with a low incidence of side effects.