Abstract PO3-28-05: Therapeutic Plasmapheresis as a Symptomatic Treatment for Paclitaxel-Associated Peripheral Polyneuropathy

Abstract

Abstract Relevance: Paclitaxel-associated peripheral polyneuropathy (PIPN) is one of the most common side effects that develop during treatment with drugs of the taxane group. In the treatment of early breast cancer with paclitaxel 80 mg/m2 weekly, 12 injections, PINP develops in 90% of patients of varying severity. The main symptoms are pain and numbness in the arms and legs, which is associated with the accumulation of paclitaxel in the ganglia of the spinal cord, as well as increased expression in the ganglia of the spinal cord of chemokines and cytokines, such as IL-1β, IL-8 and TNF-α, as well as CXCR4, RAGE, CXCL1, CXCL12, CX3CL1 and C3. We hypothesized that the severity of PIPN symptoms can be reduced by lowering the concentration of chemokines and cytokines in the blood by performing plasmapheresis sessions. Research methods: An open prospective study was carried out, the protocol of which was approved by the ethical committee. The study included 30 patients (100% women) aged 30 to 60 years (mean age 45 years) who developed PIPN during paclitaxel therapy 80 mg/m2, weekly, 12 injections. The severity of PIPN symptoms was assessed using a “visual analogue scale” (VAS). The results of the VAS evaluation varied from 6 to 8 points. Patients underwent 5 courses of membrane plasmapheresis with exfusion of 400-500 ml of plasma per session (20 ml per 1 kg of body weight), plasma loss was compensated with saline. Repeated procedures were performed once every two months for 6 months. Results: 30 patients underwent 15 procedures of therapeutic plasmapheresis within 6 months. In 21 patients (70%) there was a pronounced decrease in PIPN symptoms (VAS - 2-3 points), in 3 patients (10%) a moderate decrease in symptoms (VAS -5-6 points), in 6 (20%) no effect of plasmapheresis (VAS - 7-8 points). Approximately 15% of procedures were associated with adverse events, the most common of which were vasovagal reactions; 20% of patients had at least one adverse event. Conclusions: Given the subjective reduction in the severity of PIPN symptoms during courses of therapeutic plasmapheresis in more than 70% of cases, therapeutic plasmapheresis can be used as a symptomatic therapy for PIPN, however, taking into account the subjective assessment of the results by patients, there may be a risk of developing cognitive errors. Therefore, this method of therapy requires more thorough study. Citation Format: Sardor Abdugafforov, Vladimir Vorotnikov, Alexander Soynov, Tornike Mchedlidze, Igor Kopytich, Sofia Kim. Therapeutic Plasmapheresis as a Symptomatic Treatment for Paclitaxel-Associated Peripheral Polyneuropathy [abstract]. In: Proceedings of the 2023 San Antonio Breast Cancer Symposium; 2023 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2024;84(9 Suppl):Abstract nr PO3-28-05.