Abstract
Purpose
There are several studies on premedication to prevent postembolization syndromes which occurs after transcatheter arterial chemoembolization (TACE), but the medication to be used is still not established. This study aimed to examine the effect of palonosetron and dexamethasone on the prevention of gastrointestinal symptoms induced by TACE.
Methods
Patients with hepatocellular carcinoma who were treated with TACE with epirubicin were retrospectively evaluated. The complete response rate of antiemetic drugs and incidence and severity of gastrointestinal symptoms were compared between the antiemetic group (AE group), which includes 51 patients prophylactically administered with palonosetron 0.75 mg and dexamethasone 9.9 mg intravenously before TACE on day 1 and dexamethasone 6.6 mg intravenously on days 2 and 3, and control group with 101 patients without antiemetic premedication.
Results
Complete response rate in the entire evaluation period was significantly higher in the AE group compared with that in the control group. In the acute phase, the incidence and severity of nausea, vomiting, and anorexia significantly decreased in the AE group, but only anorexia improved in the delay phase. Additionally, postembolization syndromes, such as abdominal pain and fever, were significantly attenuated in the AE group; however, constipation worsened in this group.
Conclusions
Premedication of palonosetron and dexamethasone significantly prevents the incidence and reduces the severity of gastrointestinal symptoms especially in the acute phase. Further studies will be needed to determine the most recommended 5-HT3 antagonist or dosage of dexamethasone in establishing the optimal antiemetic regimen.
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Introduction
The number of annual deaths due to liver cancer is slowly decreasing in Japan. However, the number of patients surpasses 30,000, and many patients still need treatment. The causes of liver cancer include hepatitis C virus and/or hepatitis B virus infection, drinking habit, and nonalcoholic steatohepatitis. The treatment strategy for hepatocellular carcinoma (HCC) is selected according to the liver function, number of tumors, and tumor diameter. Even in liver resection, which is the most excellent in local control, the recurrence rate is as high as 51.6−70.3% in 2 years postoperatively [1, 2]. Transcatheter arterial chemoembolization (TACE) is one of the topical therapies in advanced HCC and contributes to the improvement of its prognosis [3, 4]. The recurrence rate of HCC in 5 years after topical therapy is 70−80%; therefore, TACE is repeatedly performed at the time of recurrence [5, 6]. There are several anticancer drugs administered in TACE. Epirubicin (EPI), which is categorized as an anthracycline-type drug, is one of the most frequently used cytotoxic agents and administered as emulsion with an oil contrast medium in TACE. Postembolization syndromes, known to be the adverse effects of TACE, include symptoms such as nausea, vomiting, anorexia, fever, and abdominal pain and often develop within 1–2 weeks from the embolization day [7]. Although their mechanism has not been fully elucidated, it is considered that systemic effects caused by anticancer drugs and inflammation caused by inflammatory mediators released from ischemia and necrotic cells are involved [8]. Nausea is the most common and one of the most painful adverse events in systemic chemotherapy. The incidence of nausea in TACE with EPI is approximately 30–50% [9, 10]. In systemic chemotherapy, guidelines for the administration of antiemetic drugs are instituted, and prophylactic administration of antiemetic drugs, such as NK1 receptor antagonists, 5-HT3 receptor antagonists, and dexamethasone, is necessary according to the risk classification of nausea for each anticancer drug. Although several studies revealed that prophylactic administration of antiemetic drugs, such as 5-HT3 receptor antagonists, dexamethasone, and scopolamine or their combination, is effective in the prevention of TACE-induced nausea, there are no definite views on the most recommended antiemetic regimen. It has been reported that prophylactic administration of dexamethasone is effective in preventing TACE-induced nausea [7, 11]. In contrast, other studies suggest that dexamethasone should not be routinely administered considering its adverse effects [12]. Even though the duration of postembolization syndromes is short, its management is important to maintain the patient’s quality of life since TACE is repeatedly performed. As EPI use is classified as having a moderate emetic risk (MEC) in antiemetic guidelines for systemic chemotherapy [13], we have assumed that EPI use in TACE has a moderate nausea risk. In this study, we have examined whether prophylactic administration of 5-HT3 receptor antagonist and dexamethasone is effective in preventing TACE-induced nausea.
Patients and methods
Patients
Patients with HCC who were treated with TACE with EPI for the first time were retrospectively evaluated. Patients were divided into two groups: antiemetic group (AE group), which includes 51 patients prophylactically administered with antiemetic drugs before TACE from October 2015 to December 2016, and control group with 101 patients without antiemetic premedication from August 2008 to October 2015. This retrospective study was approved by the Institutional Review Board of the Hokkaido University Hospital (017-0060) and conducted in accordance with the Declaration of Helsinki.
Treatment methods
TACE using lipiodol (Guerbet, Roissy CdG, France) with gelatin sponge particles (Gelpart; Nippon Kayaku, Tokyo, Japan) was performed for each patient. EPI plus lipiodol emulsion was prepared by mixing 5 mL of lipiodol and 50 mg of EPI (Nippon Kayaku, Tokyo, Japan) dissolved in 5 mL of contrast medium. Total lipiodol volume was calculated according to the total HCC volume: for an HCC nodule with a diameter of 1 cm, approximately 1 mL of lipiodol was used. To avoid liver damage, the maximum lipiodol dose was limited to 10 mL. Patients in the AE group were treated with palonosetron 0.75 mg and dexamethasone 9.9 mg intravenously before TACE on day 1 and dexamethasone 6.6 mg intravenously on days 2 and 3. No antiemetic drugs were prophylactically administered in the control group. Antiemetic drugs, such as metoclopramide or chlorpromazine, were administered as rescue medications according to the physician’s decision.
Evaluation criteria
In the evaluation period, day 1 was defined as the acute phase and days 2–6 as the delay phase at the first implementation of TACE. The primary endpoint was complete response (CR), which was defined as the absence of vomiting and absence of additional treatment with antiemetic drugs in the entire evaluation period. We have also evaluated the incidence and severity of nausea, vomiting, and anorexia and incidence of constipation and headache as adverse effects caused by antiemetic drugs. Moreover, we also investigated whether this premedication affects the development of postembolization syndromes, such as fever and abdominal pain. For the evaluation criteria, we used Common Terminology Criteria for Adverse Events version 4. Patients who have already been administered with antiemetic drugs, such as dopamine 2 receptor antagonist or histamine 1 receptor antagonist, at baseline, those with nausea before TACE, and those who were administered with drugs causing nausea, such as narcotics, were excluded.
Statistical analysis
We hypothesized that the CR rate would reach 70% in the control group and 90% in the AE group. We have set the patient ratio to 2:1 between the control and AE groups. A sample size of 101 in the control group and 51 in the AE group was required to achieve 80% power with an alpha error of 5%.
The differences in baseline clinical characteristics between the AE and control groups were assessed using Fisher’s exact probability test for categorical outcome variables and Mann-Whitney U test for continuous parameters. Differences in CR rate and incidence of gastrointestinal symptoms, postembolization syndromes, and adverse events between the two groups were analyzed using Fisher’s exact probability test. Differences in the degree of severity of gastrointestinal symptoms between the two groups were assessed using the Mann-Whitney U test. Differences were considered to be statistically significant when the P value was < 0.05.
Results
Patient’s background
Patient characteristics are shown in Table 1. There was no significant difference between the control and AE groups with respect to sex, age, performance status, body surface area, and drinking history. EPI dosage was also similar in both groups. Liver dysfunction and renal dysfunction were not different in both groups. Only TNM classification had a significant difference between the two groups.
Comparison of CR rate and incidence of gastrointestinal symptoms
Table 2 shows that the CR rate in the entire evaluation period was significantly higher in the AE group compared with that in the control group. This result suggests that prophylaxis with palonosetron and dexamethasone significantly decreased the incidence of gastrointestinal symptoms caused by TACE with EPI and additional administration of antiemetic drugs.
In the acute phase, the incidence of nausea, vomiting, and anorexia significantly decreased in the AE group, suggesting that prophylactic administration of palonosetron and dexamethasone is effective in preventing acute gastrointestinal symptoms caused by TACE with EPI. In contrast, prophylactic administration of antiemetic drugs did not affect the incidence of nausea and vomiting in the delay phase, although the incidence of anorexia significantly decreased.
Comparison of severity of gastrointestinal symptoms
Prophylactic administration of antiemetic drugs significantly ameliorated the severity of nausea and anorexia in the acute phase, whereas there was no difference in severity of gastrointestinal symptoms in the delay phase (Table 3).
Comparison of postembolization syndromes and adverse effects of antiemetic drugs
Table 4 shows the incidence of fever and abdominal pain, which are representative symptoms of postembolization syndromes and adverse effects caused by antiemetic drugs. It was shown that it was significantly reduced by premedication in the entire evaluation period. Constipation, which is a typical adverse effect of palonosetron, was significantly worsened by administration of premedication. As for headaches, changes due to antiemetic administration were not observed.
Discussion
TACE is important in the treatment of unresectable HCC; however, 47.7% of patients develop postembolization syndromes after TACE [14]. Postembolization syndromes are symptoms such as nausea, vomiting, anorexia, fever, and abdominal pain and develop within 1–2 weeks from the embolization day [7]. Since TACE is repeatedly performed, management of postembolization syndromes is also important to maintain the patient’s quality of life and advance to smooth treatment of HCC. There are several studies on premedication to prevent postembolization syndromes [7, 9, 11, 12], but the medication to be used and the best dosage are still not established. In this study, we have examined the effect of palonosetron and dexamethasone on the prevention of gastrointestinal symptoms in TACE.
It was suggested that prophylactic administration of palonosetron and dexamethasone is efficacious in patients who underwent TACE with EPI, since a significant increase in CR rate and reduction in the incidence and severity of gastrointestinal symptoms were observed in the AE group. 5-HT3 receptor antagonists and dexamethasone have been reported to prevent nausea, vomiting, and anorexia associated with TACE [9, 11, 15, 16]. The results in this study are consistent with those of other studies. It is known that 5-HT3 receptors in the gastrointestinal tract and chemoreceptor trigger zone are stimulated by anticancer agents, resulting in nausea induction. Although the mechanism of TACE-induced nausea is not sufficiently elucidated, it might be similar to that of chemotherapy-induced nausea; therefore, it could be possible to speculate that palonosetron could decrease the incidence of TACE-induced nausea. Palonosetron has higher 5-HT3 receptor binding affinity (at least 30-fold higher) and longer plasma elimination half-life (approximately 40 h) compared with older antagonists [17]. Due to these features, palonosetron is superior to the first-generation 5-HT3 receptor antagonists in antiemetic effect in the delay phase [18]. However, in this present study, the incidence and severity of the gastrointestinal symptoms in the acute phase have improved, whereas improvement in the delay phase has been achieved only in anorexia. In the control group, while the CR rate in the acute phase is 59%, the CR rate in the delay phase is 77%, suggesting that gastrointestinal symptoms induced by TACE with EPI are likely to occur in the acute phase. In a previous study, 35.6% of patients developed nausea on day 1, and the number decreased to approximately half on day 2 [9]. Nausea and vomiting in the delay phase are considered mild even in the control group; therefore, there was no significant difference between the two groups in improvement of symptoms in this phase.
In this study, dexamethasone was also likely to contribute to amelioration of gastrointestinal symptoms in the acute phase and anorexia in the delay phase. Dexamethasone is considered to improve digestive symptoms by its antiemetic effect on anticancer agents, appetite-promoting effect, and anti-inflammatory effect. Although several studies reported that dexamethasone has reduced the incidence of TACE-induced nausea, the dosage varies in each report [7, 11, 12]. Dexamethasone has been administered in multiple days in the studies, and Kogut et al. reported that a single dose of dexamethasone is ineffective in preventing gastrointestinal symptoms [12]. Sadahira et al. also reported that the combination of dexamethasone and granisetron significantly improved gastrointestinal symptoms in the acute and delay phased compared with granisetron alone [11]. In their study, they used miriplatin as the anticancer agent for TACE. Previous studies have shown that EPI and miriplatin have no difference in the incidence of adverse events after TACE, including nausea and vomiting [19, 20]. However, there are few studies that evaluated the acute and delay phases separately. Although the prophylactic administration of antiemetic drugs in the control group in this study and that in Sadahira et al.’s study differs by the presence or absence of granisetron, the respective results show that miriplatin is likely to prolong nausea and vomiting in the delay phase. However, those symptoms induced by TACE with EPI is likely to develop in the acute phase; therefore, it is considered that significant differences in the delay phase would be observed in their study but not in this study. Dexamethasone has been reported to reduce the incidence of postembolization syndromes, such as fever and abdominal pain, other than nausea [7, 11, 12, 21,22,23], and similar results were observed in this study. It is considered that improvement in anorexia in the delay phase in the AE group might be observed by decreasing pain and fever through the anti-inflammatory effect of dexamethasone rather than the antiemetic effect on anticancer agents.
The incidence of nausea induced by TACE in the acute phase reaches approximately 20% in this study and other studies [9, 11] even with prophylactic administration of antiemetic drugs, and this is higher than that in systemic chemotherapy [24]. It is presumed that it was caused by not only anticancer agents but also the stress response due to invasive treatment, abdominal pain in postembolization syndromes, and release of inflammatory substances by tumor destruction. Although surgery is a typical invasive treatment, 5-HT3 receptor antagonist is known to be efficacious in postoperative nausea and vomiting [25]. Moreover, it is presumed that dexamethasone reduces pain in postembolization syndromes and the inflammatory reaction caused by tumor destruction. From these facts, it is reasonable to use the combination of 5-HT3 receptor antagonist and dexamethasone in the prevention of gastrointestinal symptoms after TACE.
Constipation significantly worsened by administration of antiemetic drugs, mainly caused by palonosetron. Defecation control is important in patients with HCC since they are often complicated with liver cirrhosis. It is important to control constipation with laxatives and prevent hepatic encephalopathy. Constipation is caused by 5-HT3 antagonists, and palonosetron has a longer effect; thus, first-generation 5-HT3 antagonists may be useful. As evaluation was difficult, the influence of dexamethasone on the blood glucose level was not investigated in this study. The incidence of diabetes mellitus in patients with liver cirrhosis from HCC is reported to exceed 30% [26], and elevation of blood glucose level by steroids is considered as an undesirable effect as TACE is repeatedly performed. For patients with diabetes mellitus, it could be better to reduce or stop pre-administration of dexamethasone depending on the individual.
There are some limitations in the evaluation of antiemetic effect of prophylactic administration of palonosetron and dexamethasone. First, this was a retrospective study with a relatively small population of patients. Therefore, it is necessary to conduct a large-scale prospective study to confirm these results. Second, in Japan, 0.75 mg of palonosetron is adopted, but 0.25 mg is the standard internationally, so a study using palonosetron 0.25 mg should be conducted. Third, TNM stage had a significant difference between the two groups; therefore, the control group had a larger number of patients with higher severity than the AE group. Adverse events induced by TACE might strongly occur in the control group; hence, a study aligning the patient’s background should be conducted. Lastly, we have evaluated only patients who have been treated with TACE for the first time; therefore, we should also evaluate patients who were repeatedly treated with TACE.
Therefore, it was revealed that premedication of palonosetron and dexamethasone according to antiemetic premedication in the MEC regimen significantly decreases the incidence and severity of gastrointestinal symptoms. Additionally, it significantly attenuated postembolization syndromes, such as abdominal pain and fever. Further studies will be needed to determine the most recommended 5-HT3 antagonist or dosage of dexamethasone to establish the optimal antiemetic regimen.
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This work was funded by JSPS KAKENHI Grant Number 17H00565.
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Sakamoto, T., Saito, Y., Kobayashi, M. et al. Effect of palonosetron and dexamethasone administration on the prevention of gastrointestinal symptoms in hepatic arterial chemoembolization with epirubicin. Support Care Cancer 28, 3251–3257 (2020). https://doi.org/10.1007/s00520-019-05178-1
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DOI: https://doi.org/10.1007/s00520-019-05178-1