Intrathecal ziconotide for the treatment of chronic pain: a collection of clinical experiences and literature review
Abstract
OBJECTIVE: Despite the wide use of ziconotide in the USA for treating refractory cancer- and noncancer-related pain, this agent is little used in Europe, even if licensed by the European Medicines Agency (EMA). The reason could be attributed to the high, fixed starting dose required for ziconotide, as stated in the EMA Summary of Product Characteristics (SmPC). This dosage recommendation is based on the results of pivotal clinical studies of ziconotide, which utilized aggressive titration schedules. Thus, a reappraisal of the available evidence, as well as a reflection on real-life clinical experiences, might be useful to identify practice adjustments to improve the clinical application of ziconotide in the European scenario. In line with this need, this paper reports some clinical experiences of patients with chronic pain treated with ziconotide intrathecal (IT) therapy in Italy, particularly focusing on long-term treatment to further characterize and improve the use of this agent in real practice. Moreover, a literature review of the available data on the effectiveness and safety of IT ziconotide is provided.
CASE SERIES: Collected clinical experiences suggested that the use of IT ziconotide represents a valuable option, particularly in cases where other treatments have been ineffective or poorly tolerated. Ziconotide was shown to not cause severe side effects in the long-term treatment, leading to a constant pain relief effect at stable doses, without adverse events that…
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