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MO24 - NSCLC - Chemotherapy III (ID 110)
- Event: WCLC 2013
- Type: Mini Oral Abstract Session
- Track: Medical Oncology
- Presentations: 1
MO24.10 - Serum iron levels increased by cancer chemotherapy correlate the chemotherapy-induced nausea and vomiting (ID 2080)
10:30 - 12:00 | Author(s): S. Kuzu
Despite the introduction of antiemetic treatments including corticosteroids, serotonin (5-HT3) receptor antagonists and neurokinin-1 receptor antagonist, chemotherapy-induced nausea and vomiting (CINV) remains major adverse toxicity of cancer chemotherapy deteriorating patient’s quality of life. It is recommended that these antiemetic treatments should be adopted according to the emetic risk classification of clinical practice guideline, however, the treatments are not so effective in delayed CINV comparing to acute CINV. The mechanism of delayed CINV is not clear so that effective antiemetic drug have not been developed yet. Iron poisoning in cases of blood transfusion or oversupply of iron supplement have various symptoms such as nausea, vomiting, gastroenteritis and liver injury caused by free radical iron, so-called Fenton reaction. We hypothesized that these symptoms are very similar to the adverse effects of cancer chemotherapy and that CINV may be related to the iron level of the patients receiving chemotherapy.
The patients with lung cancer received cytotoxic chemotherapy were included to this study if the serum level of iron, unsaturated iron binding capacity (UIBC ) and ferritin before the chemotherapy, on day 2, and day 8 were available. All chemotherapeutic regimens were administered as standard practice indicated by Japan governmental insurance. The treatment regimens were classified to highly emetogenic chemotherapy (HEC), moderately emetogenic chemotherapy (MEC) and low emetogenic chemotherapy (LEC) according to the clinical practice guideline of the American Society of Clinical Oncology to investigate the relationship between the change of serum iron level and CINV.
A total of 37 patients (male26/femal11) were included. The number of patients of each classification were 18 in HEC (cisplatin+etoposide), 14 in MEC(caboplatin+gemcitabine, calboplatin+paclitaxel, calboplatin+etoposide, carboplatin+pemetrexed,irinotecan and amrubicin), 5 in LEC(pemetrexed). Serum iron level (μg/dl) of patients received HEC were 64.6±42.0 before treatment, 233.5±50.0 on day 2, and 235.5±41.3 on day 8. Those of MEC were 62.8±17.0 before treatment, 224.3±33.0 on day 2, and 175.7±87.6 on day 8. Those of LEC were 54.6±17.3 before treatment, 116.4±36.6 on day 2, and 40.7±33.5 on day 8. The serum iron levels of all patients markedly increased on day 2 and there were significant difference between LEC and the other two groups (p=0.01). The iron levels of LEC decreased to normal, on the contrary, those of other two groups remained abnormally high on day 8. With the increase of iron, the significant decrease of UIBC was observed implying that free radical iron appeared after the chemotherapy
Serum iron levels were closely correlated to CINV. This phenomenon may be a clue to new approach for antiemetic treatments.
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