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Effectiveness of gabapentin pharmacotherapy in chemotherapy-induced peripheral neuropathy.

OBJECTIVES
Chemotherapy-induced peripheral neuropathy (CIPN) is a common chemotherapy side effect, but its prevention and treatment remains a challenge. Neurotoxicity may lead to dose limitation or even treatment discontinuation, and therefore potentially affect the efficacy of anticancer treatment and long term outcomes. The practice to administer gabapentin for neuropathy may be applicable, but is limited by insufficient studies. The aim of our study was to assess the presence of chemotherapy-induced peripheral neuropathy in ovarian cancer patients treated with first-line paclitaxel and carboplatin chemotherapy and evaluate the effectiveness of gabapentin in treatment of this condition.


MATERIAL AND METHODS
61 ovarian cancer patients treated with first line chemotherapy were included in the study. The first phase of the study was to assess neurological condition of each patient by: neuropathy symptoms scale, McGill's scale, neurological deficit and quality of life, during the chemotherapy. In the second phase of the study we evaluated the response to gabapentin treatment in a group of patients who developed neuropathy.


RESULTS
78.7% of the patients developed chemotherapy related neuropathy. During the course of chemotherapy these patients experienced significant exacerbation of neuropathy symptoms (p < 0.0001), neuropathic pain (p < 0.0001), neurologic deficit (p < 0.0012) and worsening of quality of life (p < 0.0002). Patients who were qualified to undergo the gabapentin treatment observed improvement in symptoms (p < 0.027), pain (p < 0.027) and neurologic deficit (p < 0.019). Quality of life did not change significantly after gabapentin treatment (p < 0.128).


CONCLUSIONS
Chemotherapy substantially deteriorates the neurologic condition of the patients and the quality of life. Paclitaxel and carboplatin treated patients may benefit from gabapentin therapy in chemotherapy-induced peripheral neuropathy.