药品信息: 英文名称:fludarabinephosphate
说明:冻干粉剂:50mg/瓶。
【功用作用】 B细胞性慢性淋巴细胞白血病(CLL),患者在经至少一个疗程含标准烷化剂类化疗方案治疗后或在治疗期间,病情没有改善或持续进展者。
【用法用量】 成人磷酸氟达拉滨应在有丰富抗肿瘤治疗经验的医生的监督下使用。 强烈推荐磷酸氟达拉滨只能用于静脉注射。尽管还没有静脉旁注射引起严重局部不良反应的病例报导,但是必须避免静脉周围无目的地用药。推荐的剂量是25mg/m2磷酸氟达拉滨,每28天连续静脉用药5天,每个小瓶装有2mL注射用水,每mL配制溶液中应含有25mg磷酸氟达拉滨。抽取相应剂量(计算依据患者体表面积)于注射器内,如果是静脉内快速团注,需再用10mL0.9%生理盐水稀释。或者,抽取到注射器内的所需剂量也可以用100mL0.9%生理盐水稀释后滴注,滴注时间应超过30分钟左右。治疗持续的时间取决于治疗的效果及对药物的耐受性。对CLL患者,磷酸氟达拉滨应一直用到取得最佳治疗效果(完全或部分缓解,通常需6个疗程)后,方可停用。 肾功能不全对肾功能不全患者的剂量应作相应的调整。肌酐清除率为30-70mL/分时剂量应减少达50%,且要严密检测血液学改变以评价药物的毒性。如果肌酐清除率小于30mL/分。应禁用磷酸氟达拉滨治疗。 用药过量高剂量的磷酸氟达拉滨与不可逆的中枢神经系统的毒性有关,表现为迟发的失明、昏迷和死亡。高剂量磷酸氟达拉滨还与骨髓抑制造成的严重的血小板减少和粒细胞减少有关。 还没有已知的磷酸氟达拉滨过量的特效拮抗剂,过量的治疗主要包括停用药物和支持治疗。
【用药须知】 操作和销毁磷酸氟达拉滨不应由怀孕的医务人员操作。 应遵守正确的操作和销毁规程。应根据用于细胞毒药品的指导原则考虑其操作和销毁。任何溢出或废弃的物质可以通过焚化销毁。 对于静脉内使用制剂的特殊说明磷酸氟达拉滨应在无菌条件下加入灭菌注射用水制备。当加入2mL灭菌注射用水制备时,固体粉末应很快完全溶解。每毫升最终溶液将含有25mg磷酸氟达拉滨、25mg甘露醇和调整pH值至7.7的氢氧化钠。最终产品的pH值范围为7.2-8.2。在临床研究中,曾用100mL或125mL5%葡萄糖注射液或0.9%生理盐水稀释该产品。 操作和制备磷酸氟达拉滨注射液时应小心。推荐使用乳胶手套和防护眼镜以防止因小瓶破损或其他偶然的溢出而引起的药物接触。如果该溶液接触到皮肤或粘膜,应该用水和肥皂彻底清洗该部位。如果接触到眼睛,应该用大量的水彻底清洗。要避免因吸入引起的药物接触。
【注意事项】 禁用于对磷酸氟达拉滨及其所含其它成分过敏的患者,肌酐清除率小于30mL/分的肾功能不全患者和失代偿性溶血性贫血的患者。 神经毒性在急性白血病患者的剂量范围研究中应用高剂量的磷酸氟达拉滨,发现磷酸氟达拉滨与严重的神经毒性作用相关,包括失明、昏迷和死亡。静脉内应用约4倍于CLL推荐治疗剂量的磷酸氟达拉滨(96mg/m2/天,5~7天)后,36%的患者出现了严重的中枢神经系统毒性。而在应用CLL推荐治疗剂量范围内的磷酸氟达拉滨的患者中,严重的中枢神经系统症状(昏迷和焦虑不安)罕见或(精神混乱)少见。应该严密观察患者的神经系统不良反应的体征。 虽然长期使用磷酸氟达拉滨对中枢神经系统的影响还不清楚。但是在一些相当长治疗时间的研究中(使用时间长达26个疗程),患者仍能够耐受推荐的治疗剂量。 健康状况差对于健康状况差的患者,应更加谨慎地使用磷酸氟达拉滨,并且在治疗前应认真权衡利弊。尤其是对那些严重骨髓功能障碍(血小板减少、贫血、和或粒细胞减少)、免疫缺陷或有机会性感染病史的患者。 肝功能不全目前还没有在肝功能不全的患者中应用磷酸氟达拉滨的资料。对于这一类患者,如果认为预计的获益大于任何潜在的危险,应当谨慎地应用磷酸氟达拉滨。 骨髓抑制严重的骨髓抑制,主要是贫血、血小板减少和中性粒细胞减少,在磷酸氟达拉滨治疗的病例中已经有报导。在实体瘤患者的Ⅰ期临床研究中发现,粒细胞数目降到最低的中位时间是13天(范围是3-25天),血小板是16天(范围是2-32天)。大多数患者的基础造血功能有损伤,可能是基础疾病的原因或是以前用骨髓抑制药物的结果。可以看到骨髓抑制的累积效应。虽然化疗药物引起的骨髓抑制往往是可逆的,应用磷酸氟达拉滨时仍需要严密的血液学监测。 磷酸氟达拉滨是一种有潜在的明显的毒性副作用的有效的抗肿瘤药物,应严密监测接受治疗的患者的血液系统和非血液系统毒性体征。定期监测外周血细胞计数可以提示贫血、粒细胞减少和血小板减少的发生。 血液制品的输注磷酸氟达拉滨治疗的患者在输注未经照射处理的全血后已经发现有与输血相关的移植物抗宿主病(GVHD)的出现。有报告这种病的死亡率非常高。因此正在接受或已经接受磷酸氟达拉滨治疗的患者在需要输血时应该只接受照射处理过的血液。 皮肤癌有报导,一些患者在接受磷酸氟达拉滨治疗期间或治疗后,以前的皮肤癌病变出现可逆性的恶化或骤然爆发。 肿瘤溶解综合征有报导,大量肿瘤负荷的患者在接受磷酸氟达拉滨治疗时出现肿瘤溶解综合征。因为磷酸氟达拉滨可以在治疗的第1周就诱发这种综合征发生,所以对这些综合征的高危人群应及早做好预防措施。 自身免疫现象有报告,不论以前有无自身免疫疾病的基础或先前Coombs实验的结果,在磷酸氟达拉滨治疗期间或治疗后,有时会出现致命的自身免疫现象(如自身免疫性溶血性贫血、自身免疫性血小板减少、血小板减少性紫癜、天疱疮、Evans综合征)。大多数溶血性贫血的患者在再次接受磷酸氟达拉滨治疗后出现症状的反复。 接受磷酸氟达拉滨治疗的患者应该严密监测自身免疫性溶血性贫血的体征(与溶血和Coombs实验阳性相关连的血红蛋白的降低)。建议溶血的患者中断磷酸氟达拉滨的治疗。输血(照射后,见上)和应用肾上腺皮质激素制剂是治疗自身免疫性溶血性贫血的最常用方法。
【肾功能减低】 血浆中主要代谢产物2F-ara-A的机体总清除率与肌酐清除率相关,提示肾脏排泄对此化合物的重要性。肾功能减低的患者的总暴露量(2F-ara-A的AUC)升高。对于肾功能不全的患者只有较少的临床资料(肌酐清除率小于70mL/分)。 因此,如果怀疑有肾功能不全,或是年龄大于70岁的患者均应该测定肌酐清除率。如果肌酐清除率在30-70mL/分之间,药物的剂量应该减半而且要严密监测血液学改变以评价药物毒性,如果肌酐清除率小于30mL/分应禁用磷酸氟达拉滨治疗。 避孕有生育功能的女性或男性在接受治疗期间或治疗后的6个月以内必须采取避孕措施。 接种疫苗在接受磷酸氟达拉滨治疗期间或治疗后,应该避免接种活疫苗。 FLUDARA - fludarabine phosphate injection, powder, lyophilized, for solution Genzyme Corporation ---------- Fludara® fludarabine phosphate FOR INJECTION FOR INTRAVENOUS USE ONLY Rx Only
WARNING: FLUDARA FOR INJECTION should be administered under the supervision of a qualified physician experienced in the use of antineoplastic therapy. FLUDARA FOR INJECTION can severely suppress bone marrow function. When used at high doses in dose-ranging studies in patients with acute leukemia, FLUDARA FOR INJECTION was associated with severe neurologic effects, including blindness, coma, and death. This severe central nervous system toxicity occurred in 36% of patients treated with doses approximately four times greater (96 mg/m2/day for 5-7 days) than the recommended dose. Similar severe central nervous system toxicity, including coma, seizures, agitation and confusion, has been reported in patients treated at doses in the range of the dose recommended for chronic lymphocytic leukemia. Instances of life-threatening and sometimes fatal autoimmune phenomena such as hemolytic anemia, autoimmune thrombocytopenia/thrombocytopenic purpura (ITP), Evans syndrome, and acquired hemophilia have been reported to occur after one or more cycles of treatment with FLUDARA FOR INJECTION. Patients undergoing treatment with FLUDARA FOR INJECTION should be evaluated and closely monitored for hemolysis. In a clinical investigation using FLUDARA FOR INJECTION in combination with pentostatin (deoxycoformycin) for the treatment of refractory chronic lymphocytic leukemia (CLL), there was an unacceptably high incidence of fatal pulmonary toxicity. Therefore, the use of FLUDARA FOR INJECTION in combination with pentostatin is not recommended. | DESCRIPTION
FLUDARA FOR INJECTION contains fludarabine phosphate, a fluorinated nucleotide analog of the antiviral agent vidarabine, 9-β-D-arabinofuranosyladenine (ara-A) that is relatively resistant to deamination by adenosine deaminase. Each vial of sterile lyophilized solid cake contains 50 mg of the active ingredient fludarabine phosphate, 50 mg of mannitol, and sodium hydroxide to adjust pH to 7.7. The pH range for the final product is 7.2-8.2. Reconstitution with 2 mL of Sterile Water for Injection, USP, results in a solution containing 25 mg/mL of fludarabine phosphate intended for intravenous administration.
The chemical name for fludarabine phosphate is 9H-Purin-6-amine, 2-fluoro-9-(5-0-phosphono-β-D-arabino-furanosyl) (2-fluoro-ara-AMP). The molecular formula of fludarabine phosphate is C10H13FN5O7P (MW 365.2) and the structure is:
CLINICAL PHARMACOLOGY
Fludarabine phosphate is rapidly dephosphorylated to 2-fluoro-ara-A and then phosphorylated intracellularly by deoxycytidine kinase to the active triphosphate, 2-fluoro-ara-ATP. This metabolite appears to act by inhibiting DNA polymerase alpha, ribonucleotide reductase and DNA primase, thus inhibiting DNA synthesis. The mechanism of action of this antimetabolite is not completely characterized and may be multi-faceted.
Phase I studies in humans have demonstrated that fludarabine phosphate is rapidly converted to the active metabolite, 2-fluoro-ara-A, within minutes after intravenous infusion. Consequently, clinical pharmacology studies have focused on 2-fluoro-ara-A pharmacokinetics. After the five daily doses of 25 mg 2-fluoro-ara-AMP/m2 to cancer patients infused over 30 minutes, 2-fluoro-ara-A concentrations show a moderate accumulation. During a 5-day treatment schedule, 2-fluoro-ara-A plasma trough levels increased by a factor of about 2. The terminal half-life of 2-fluoro-ara-A was estimated as approximately 20 hours. In vitro, plasma protein binding of fludarabine ranged between 19% and 29%.
A correlation was noted between the degree of absolute granulocyte count nadir and increased area under the concentration x time curve (AUC).
Special Populations
Pediatric Patients
Limited pharmacokinetic data for FLUDARA FOR INJECTION are available from a published study of children (ages 1-21 years) with refractory acute leukemias or solid tumors (Children’s Cancer Group Study 097). When FLUDARA FOR INJECTION was administered as a loading dose over 10 minutes immediately followed by a 5-day continuous infusion, steady-state conditions were reached early.
Patients with Renal Impairment
The total body clearance of the principal metabolite 2-fluoro-ara-A correlated with the creatinine clearance, indicating the importance of the renal excretion pathway for the elimination of the drug. Renal clearance represents approximately 40% of the total body clearance. Patients with creatinine clearance 30-79 mL/min should have their FLUDARA FOR INJECTION dose reduced and be monitored closely for excessive toxicity. Due to insufficient data, FLUDARA FOR INJECTION should not be administered to patients with creatinine clearance less than 30 mL/min. (See DOSAGE AND ADMINISTRATION section).
CLINICAL STUDIES
Two single-arm, open-label studies of FLUDARA FOR INJECTION have been conducted in adult patients with CLL refractory to at least one prior standard alkylating-agent containing regimen. In a study conducted by M.D. Anderson Cancer Center (MDAH), 48 patients were treated with a dose of 22-40 mg/m2 daily for 5 days every 28 days. Another study conducted by the Southwest Oncology Group (SWOG) involved 31 patients treated with a dose of 15-25 mg/m2 daily for 5 days every 28 days. The overall objective response rates were 48% and 32% in the MDAH and SWOG studies, respectively. The complete response rate in both studies was 13%; the partial response rate was 35% in the MDAH study and 19% in the SWOG study. These response rates were obtained using standardized response criteria developed by the National Cancer Institute CLL Working Group and were achieved in heavily pretreated patients. The ability of FLUDARA FOR INJECTION to induce a significant rate of response in refractory patients suggests minimal cross-resistance with commonly used anti-CLL agents.
The median time to response in the MDAH and SWOG studies was 7 weeks (range of 1 to 68 weeks) and 21 weeks (range of 1 to 53 weeks), respectively. The median duration of disease control was 91 weeks (MDAH) and 65 weeks (SWOG). The median survival of all refractory CLL patients treated with FLUDARA FOR INJECTION was 43 weeks and 52 weeks in the MDAH and SWOG studies, respectively.
Rai stage improved to Stage II or better in 7 of 12 MDAH responders (58%) and in 5 of 7 SWOG responders (71%) who were Stage III or IV at baseline. In the combined studies, mean hemoglobin concentration improved from 9.0 g/dL at baseline to 11.8 g/dL at the time of response in a subgroup of anemic patients. Similarly, average platelet count improved from 63,500/mm3 to 103,300/mm3 at the time of response in a subgroup of patients who were thrombocytopenic at baseline.
INDICATIONS AND USAGE
FLUDARA FOR INJECTION is indicated for the treatment of adult patients with B-cell chronic lymphocytic leukemia (CLL) who have not responded to or whose disease has progressed during treatment with at least one standard alkylating-agent containing regimen. The safety and effectiveness of FLUDARA FOR INJECTION in previously untreated or non-refractory patients with CLL have not been established.
CONTRAINDICATIONS
FLUDARA FOR INJECTION is contraindicated in those patients who are hypersensitive to this drug or its components.
WARNINGS
(See BOXED WARNINGS)
Dose Dependent Neurologic Toxicities
There are clear dose-dependent toxic effects seen with FLUDARA FOR INJECTION. Dose levels approximately 4 times greater (96 mg/m2/day for 5 to 7 days) than that recommended for CLL (25 mg/m2/day for 5 days) were associated with a syndrome characterized by delayed blindness, coma and death. Symptoms appeared from 21 to 60 days following the last dose. Thirteen of 36 patients (36%) who received FLUDARA FOR INJECTION at high doses (96 mg/m2/day for 5 to 7 days) developed this severe neurotoxicity. Similar severe central nervous system toxicity, including coma, seizures, agitation and confusion, has been reported in patients treated at doses in the range of the dose recommended for chronic lymphocytic leukemia.
In postmarketing experience neurotoxicity has been reported to occur either earlier or later than in clinical trials (range 7 to 225 days).
The effect of chronic administration of FLUDARA FOR INJECTION on the central nervous system is unknown; however, patients have received the recommended dose for up to 15 courses of therapy.
Bone Marrow Suppression
Severe bone marrow suppression, notably anemia, thrombocytopenia and neutropenia, has been reported in patients treated with FLUDARA FOR INJECTION. In a Phase I study in adult solid tumor patients, the median time to nadir counts was 13 days (range, 3-25 days) for granulocytes and 16 days (range, 2-32) for platelets. Most patients had hematologic impairment at baseline either as a result of disease or as a result of prior myelosuppressive therapy. Cumulative myelosuppression may be seen. While chemotherapy-induced myelosuppression is often reversible, administration of FLUDARA FOR INJECTION requires careful hematologic monitoring.
Several instances of trilineage bone marrow hypoplasia or aplasia resulting in pancytopenia, sometimes resulting in death, have been reported in adult patients. The duration of clinically significant cytopenia in the reported cases has ranged from approximately 2 months to approximately 1 year. These episodes have occurred both in previously treated or untreated patients.
Autoimmune Reactions
Instances of life-threatening and sometimes fatal autoimmune phenomena such as hemolytic anemia, autoimmune thrombocytopenia/thrombocytopenic purpura (ITP), Evans syndrome, and acquired hemophilia have been reported to occur after one or more cycles of treatment with FLUDARA FOR INJECTION in patients with or without a previous history of autoimmune hemolytic anemia or a positive Coombs' test and who may or may not be in remission from their disease. Steroids may or may not be effective in controlling these hemolytic episodes. The majority of patients rechallenged with FLUDARA FOR INJECTION developed a recurrence in the hemolytic process. The mechanism(s) which predispose patients to the development of this complication has not been identified. Patients undergoing treatment with FLUDARA FOR INJECTION should be evaluated and closely monitored for hemolysis. Discontinuation of therapy with FLUDARA FOR INJECTION is recommended in case of hemolysis.
Transfusion Associated Graft-Versus-Host Disease
Transfusion-associated graft-versus-host disease has been observed after transfusion of non-irradiated blood in FLUDARA FOR INJECTION treated patients. Fatal outcome as a consequence of this disease has been reported. Therefore, to minimize the risk of transfusion-associated graft-versus-host disease, patients who require blood transfusion and who are undergoing, or who have received, treatment with FLUDARA FOR INJECTION should receive irradiated blood only.
Pulmonary Toxicity
In a clinical investigation using FLUDARA FOR INJECTION in combination with pentostatin (deoxycoformycin) for the treatment of refractory chronic lymphocytic leukemia (CLL) in adults, there was an unacceptably high incidence of fatal pulmonary toxicity. Therefore, the use of FLUDARA FOR INJECTION in combination with pentostatin is not recommended.
Pregnancy Category D
Based on its mechanism of action, fludarabine phosphate can cause fetal harm when administered to a pregnant woman. There are no adequate and well-controlled studies of FLUDARA FOR INJECTION in pregnant women. Fludarabine administered to rats and rabbits during organogenesis caused an increase in resorptions, skeletal and visceral malformations and decreased fetal body weights. If FLUDARA FOR INJECTION is used during pregnancy, or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to the fetus. Women of childbearing potential should be advised to avoid becoming pregnant.
Male Fertility and Reproductive Outcomes
Males with female sexual partners of childbearing potential should use contraception during and after cessation of FLUDARA FOR INJECTION therapy. Fludarabine may damage testicular tissue and spermatozoa. Possible sperm DNA damage raises concerns about loss of fertility and genetic abnormalities in fetuses. The duration of this effect is uncertain. [See PRECAUTIONS, Impairment of Fertility]
PRECAUTIONS
General
FLUDARA FOR INJECTION is a potent antineoplastic agent with potentially significant toxic side effects. Patients undergoing therapy should be closely observed for signs of hematologic and nonhematologic toxicity. Periodic assessment of peripheral blood counts is recommended to detect the development of anemia, neutropenia and thrombocytopenia.
In patients with impaired state of health, FLUDARA FOR INJECTION should be given with caution and after careful risk/benefit consideration. This applies especially for patients with severe impairment of bone marrow function (thrombocytopenia, anemia, and/or granulocytopenia), immunodeficiency or with a history of opportunistic infection. Prophylactic treatment should be considered in patients at increased risk of developing opportunistic infections.
FLUDARA FOR INJECTION may reduce the ability to drive or use machines, since fatigue, weakness, visual disturbances, confusion, agitation and seizures have been observed.
Tumor Cell Lysis
Tumor lysis syndrome has been associated with FLUDARA FOR INJECTION treatment. This syndrome has been reported in CLL patients with large tumor burden. Since FLUDARA FOR INJECTION can induce a response as early as the first week of treatment, precautions should be taken in those patients at risk of developing this complication.
Renal Impairment
FLUDARA FOR INJECTION must be administered cautiously in patients with renal impairment. The total body clearance of 2-fluoro-ara-A has been shown to be directly correlated with creatinine clearance. Patients with creatinine clearance 30-79 mL/min should have their FLUDARA FOR INJECTION dose reduced and be monitored closely for excessive toxicity. FLUDARA FOR INJECTION should not be administered to patients with creatinine clearance less than 30 mL/min. (See DOSAGE AND ADMINISTRATION section).
In patients aged 65 years or older, creatinine clearance should be measured before start of treatment.
Laboratory Tests
During treatment, the patient’s hematologic profile (particularly neutrophils and platelets) should be monitored regularly to determine the degree of hematopoietic suppression.
Drug Interactions
The use of FLUDARA FOR INJECTION in combination with pentostatin is not recommended due to the risk of fatal pulmonary toxicity (see WARNINGS section).
Carcinogenesis
No animal carcinogenicity studies with FLUDARA FOR INJECTION have been conducted.
Mutagenesis
Fludarabine phosphate was not mutagenic to bacteria (Ames test) or mammalian cells (HGRPT assay in Chinese hamster ovary cells) either in the presence or absence of metabolic activation. Fludarabine phosphate was clastogenic in vitro to Chinese hamster ovary cells (chromosome aberrations in the presence of metabolic activation) and induced sister chromatid exchanges both with and without metabolic activation. In addition, fludarabine phosphate was clastogenic in vivo (mouse micronucleus assay) but was not mutagenic to germ cells (dominant lethal test in male mice).
Impairment of Fertility
Studies in mice, rats and dogs have demonstrated dose-related adverse effects on the male reproductive system. Observations consisted of a decrease in mean testicular weights in mice and rats with a trend toward decreased testicular weights in dogs and degeneration and necrosis of spermatogenic epithelium of the testes in mice, rats and dogs. The possible adverse effects on fertility in humans have not been adequately evaluated.
Pregnancy
Pregnancy Category D (see WARNINGS section).
Based on its mechanism of action, fludarabine phosphate can cause fetal harm when administered to a pregnant woman. There are not adequate and well-controlled studies of fludarabine phosphate in pregnant women. Fludarabine phosphate was embryolethal and teratogenic in rats and rabbits. If FLUDARA FOR INJECTION is used during pregnancy, or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to the fetus. Women of childbearing potential should be advised to avoid becoming pregnant.
In rats, repeated intravenous doses of fludarabine phosphate at 2.4 times and 7.2 times the recommended human IV dose (25 mg/m2) administered during organogenesis caused an increase in resorptions, skeletal and visceral malformations (cleft palate, exencephaly, and fetal vertebrae deformities) and decreased fetal body weights. Maternal toxicity was not apparent at 2.4 times the human IV dose, and was limited to slight body weight decreases at 7.2 times the human IV dose. In rabbits, repeated intravenous doses of fludarabine phosphate at 3.8 times the human IV dose administered during organogenesis increased embryo and fetal lethality as indicated by increased resorptions and a decrease in live fetuses. A significant increase in malformations including cleft palate, hydrocephaly, adactyly, brachydactyly, fusions of the digits, diaphragmatic hernia, heart/great vessel defects, and vertebrae/rib anomalies were seen in all dose levels (≥ 0.5 times the human IV dose).
Nursing Mothers
It is not known whether fludarabine phosphate is excreted in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reactions including tumorigenicity in nursing infants, a decision should be made to discontinue nursing or discontinue the drug, taking into account the importance of the drug to the mother.
Pediatric Use
Data submitted to the FDA was insufficient to establish efficacy in any childhood malignancy. FLUDARA FOR INJECTION was evaluated in 62 pediatric patients (median age 10, range 1-21) with refractory acute leukemia (45 patients) or solid tumors (17 patients). The FLUDARA FOR INJECTION regimen tested for pediatric acute lymphocytic leukemia (ALL) patients was a loading bolus of 10.5 mg/m2/day followed by a continuous infusion of 30.5 mg/m2/day for 5 days. In 12 pediatric patients with solid tumors, dose-limiting myelosuppression was observed with a loading dose of 8 mg/m2/day followed by a continuous infusion of 23.5 mg/m2/day for 5 days. The maximum tolerated dose was a loading dose of 7 mg/m2/day followed by a continuous infusion of 20 mg/m2/day for 5 days. Treatment toxicity included bone marrow suppression. Platelet counts appeared to be more sensitive to the effects of FLUDARA FOR INJECTION than hemoglobin and white blood cell counts. Other adverse events included fever, chills, asthenia, rash, nausea, vomiting, diarrhea, and infection. There were no reported occurrences of peripheral neuropathy or pulmonary hypersensitivity reaction.
Vaccination
During and after treatment with FLUDARA FOR INJECTION, vaccination with live vaccines should be avoided.
Disease Progression
Richter’s syndrome has been reported in CLL patients.
ADVERSE REACTIONS
Very common adverse events include myelosuppression (neutropenia, thrombocytopenia and anemia), fever and chills, fatigue, weakness, infection, pneumonia, cough, nausea, vomiting, and diarrhea. Other commonly reported events include malaise, mucositis and anorexia. Serious opportunistic infections (such as latent viral reactivation, herpes zoster virus, Epstein-Barr virus, and progressive multifocal leukoencephalopathy) have occurred in CLL patients treated with FLUDARA FOR INJECTION. Adverse events and those reactions which are more clearly related to the drug are arranged below according to body system.
Hematopoietic Systems
Hematologic events (neutropenia, thrombocytopenia, and/or anemia) were reported in the majority of CLL patients treated with FLUDARA FOR INJECTION. During FLUDARA FOR INJECTION treatment of 133 patients with CLL, the absolute neutrophil count decreased to less than 500/mm3 in 59% of patients, hemoglobin decreased from pretreatment values by at least 2 grams percent in 60%, and platelet count decreased from pretreatment values by at least 50% in 55%. Myelosuppression may be severe, cumulative, and may affect multiple cell lines. Bone marrow fibrosis occurred in one CLL patient treated with FLUDARA FOR INJECTION.
Several instances of trilineage bone marrow hypoplasia or aplasia resulting in pancytopenia, sometimes resulting in death, have been reported in post-marketing surveillance. The duration of clinically significant cytopenia in the reported cases has ranged from approximately 2 months to approximately 1 year. These episodes have occurred both in previously treated or untreated patients.
Life-threatening and sometimes fatal autoimmune phenomena such as hemolytic anemia, autoimmune thrombocytopenia/thrombocytopenic purpura (ITP), Evans syndrome, and acquired hemophilia have been reported to occur in patients receiving FLUDARA FOR INJECTION (see WARNINGS section). The majority of patients rechallenged with FLUDARA FOR INJECTION developed a recurrence in the hemolytic process.
In post-marketing experience, cases of myelodysplastic syndrome and acute myeloid leukemia, mainly associated with prior, concomitant or subsequent treatment with alkylating agents, topoisomerase inhibitors, or irradiation have been reported.
Infections
Serious and sometimes fatal infections, including opportunistic infections and reactivations of latent viral infections such as VZV (herpes zoster), Epstein-Barr virus and JC virus (progressive multifocal leukoencephalopathy) have been reported in patients treated with FLUDARA FOR INJECTION.
Rare cases of Epstein-Barr virus (EBV) associated lymphoproliferative disorders have been reported in patients treated with FLUDARA FOR INJECTION.
In post-marketing experience, cases of progressive multifocal leukoencephalopathy have been reported. Most cases had a fatal outcome. Many of these cases were confounded by prior and/or concurrent chemotherapy. The time to onset has ranged from a few weeks to approximately one year after initiating treatment.
Of the 133 adult CLL patients in the two trials, there were 29 fatalities during study, approximately 50% of which were due to infection.
Metabolic
Tumor lysis syndrome has been reported in CLL patients treated with FLUDARA FOR INJECTION. This complication may include hyperuricemia, hyperphosphatemia, hypocalcemia, metabolic acidosis, hyperkalemia, hematuria, urate crystalluria, and renal failure. The onset of this syndrome may be heralded by flank pain and hematuria.
Nervous System
(see WARNINGS section)
Objective weakness, agitation, confusion, seizures, visual disturbances, optic neuritis, optic neuropathy, blindness and coma have occurred in CLL patients treated with FLUDARA FOR INJECTION at the recommended dose. Peripheral neuropathy has been observed in patients treated with FLUDARA FOR INJECTION and one case of wrist-drop was reported. There have been additional reports of cerebral hemorrhage though the frequency is not known.
Pulmonary System
Pneumonia, a frequent manifestation of infection in CLL patients, occurred in 16% and 22% of those treated with FLUDARA FOR INJECTION in the MDAH and SWOG studies, respectively. Pulmonary hypersensitivity reactions to FLUDARA FOR INJECTION characterized by dyspnea, cough and interstitial pulmonary infiltrate have been observed.
In post-marketing experience, cases of severe pulmonary toxicity have been observed with FLUDARA FOR INJECTION use which resulted in ARDS, respiratory distress, pulmonary hemorrhage, pulmonary fibrosis, pneumonitis and respiratory failure. After an infectious origin has been excluded, some patients experienced symptom improvement with corticosteroids.
Gastrointestinal System
Gastrointestinal disturbances such as nausea and vomiting, anorexia, diarrhea, stomatitis and gastrointestinal bleeding and hemorrhage have been reported in patients treated with FLUDARA FOR INJECTION. Elevations of pancreatic enzyme levels have also been reported.
Cardiovascular
Edema has been frequently reported. One patient developed a pericardial effusion possibly related to treatment with FLUDARA FOR INJECTION. There have been additional reports of heart failure and arrhythmia though the frequency is rare. No other severe cardiovascular events were considered to be drug related.
Genitourinary System
Rare cases of hemorrhagic cystitis have been reported in patients treated with FLUDARA FOR INJECTION.
Skin
Skin toxicity, consisting primarily of skin rashes, has been reported in patients treated with FLUDARA FOR INJECTION. Erythema multiforme, Stevens-Johnson syndrome, toxic epidermal necrolysis and pemphigus have been reported, with fatal outcomes in some cases.
Neoplasms
Worsening or flare-up of pre-existing skin cancer lesions, as well as new onset of skin cancer, has been reported in patients during or after treatment with FLUDARA FOR INJECTION.
Hepatobiliary Disorders
Elevations of hepatic enzyme levels have been reported.
Data in the following table are derived from the 133 patients with CLL who received FLUDARA FOR INJECTION in the MDAH and SWOG studies.
PERCENT OF CLL PATIENTS REPORTING NONHEMATOLOGIC ADVERSE EVENTS
ADVERSE EVENTS |
MDAH (N=101) |
SWOG (N=32) |
ANY ADVERSE EVENT |
88% |
91% |
BODY AS A WHOLE |
72 |
84 |
FEVER |
60 |
69 |
CHILLS |
11 |
19 |
FATIGUE |
10 |
38 |
INFECTION |
33 |
44 |
PAIN |
20 |
22 |
MALAISE |
8 |
6 |
DIAPHORESIS |
1 |
13 |
ALOPECIA |
0 |
3 |
ANAPHYLAXIS |
1 |
0 |
HEMORRHAGE |
1 |
0 |
HYPERGLYCEMIA |
1 |
6 |
DEHYDRATION |
1 |
0 |
NEUROLOGICAL |
21 |
69 |
WEAKNESS |
9 |
65 |
PARESTHESIA |
4 |
12 |
HEADACHE |
3 |
0 |
VISUAL DISTURBANCE |
3 |
15 |
HEARING LOSS |
2 |
6 |
SLEEP DISORDER |
1 |
3 |
DEPRESSION |
1 |
0 |
CEREBELLAR SYNDROME |
1 |
0 |
IMPAIRED MENTATION |
1 |
0 |
PULMONARY |
35 |
69 |
COUGH |
10 |
44 |
PNEUMONIA |
16 |
22 |
DYSPNEA |
9 |
22 |
SINUSITIS |
5 |
0 |
PHARYNGITIS |
0 |
9 |
UPPER RESPIRATORY INFECTION |
2 |
16 |
ALLERGIC PNEUMONITIS |
0 |
6 |
EPISTAXIS |
1 |
0 |
HEMOPTYSIS |
1 |
6 |
BRONCHITIS |
1 |
0 |
HYPOXIA |
1 |
0 |
GASTROINTESTINAL |
46 |
63 |
NAUSEA/VOMITING |
36 |
31 |
DIARRHEA |
15 |
13 |
ANOREXIA |
7 |
34 |
STOMATITIS |
9 |
0 |
GI BLEEDING |
3 |
13 |
ESOPHAGITIS |
3 |
0 |
MUCOSITIS |
2 |
0 |
LIVER FAILURE |
1 |
0 |
ABNORMAL LIVER FUNCTION TEST |
1 |
3 |
CHOLELITHIASIS |
0 |
3 |
CONSTIPATION |
1 |
3 |
DYSPHAGIA |
1 |
0 |
CUTANEOUS |
17 |
18 |
RASH |
15 |
15 |
PRURITUS |
1 |
3 |
SEBORRHEA |
1 |
0 |
GENITOURINARY |
12 |
22 |
DYSURIA |
4 |
3 |
URINARY INFECTION |
2 |
15 |
HEMATURIA |
2 |
3 |
RENAL FAILURE |
1 |
0 |
ABNORMAL RENAL FUNCTION TEST |
1 |
0 |
PROTEINURIA |
1 |
0 |
HESITANCY |
0 |
3 |
CARDIOVASCULAR |
12 |
38 |
EDEMA |
8 |
19 |
ANGINA |
0 |
6 |
CONGESTIVE HEART FAILURE |
0 |
3 |
ARRHYTHMIA |
0 |
3 |
SUPRAVENTRICULAR TACHYCARDIA |
0 |
3 |
MYOCARDIAL INFARCTION |
0 |
3 |
DEEP VENOUS THROMBOSIS |
1 |
3 |
PHLEBITIS |
1 |
3 |
TRANSIENT ISCHEMIC ATTACK |
1 |
0 |
ANEURYSM |
1 |
0 |
CEREBROVASCULAR ACCIDENT |
0 |
3 |
MUSCULOSKELETAL |
7 |
16 |
MYALGIA |
4 |
16 |
OSTEOPOROSIS |
2 |
0 |
ARTHRALGIA |
1 |
0 |
TUMOR LYSIS SYNDROME |
1 |
0 |
More than 3000 adult patients received FLUDARA FOR INJECTION in studies of other leukemias, lymphomas, and other solid tumors. The spectrum of adverse effects reported in these studies was consistent with the data presented above.
OVERDOSAGE
High doses of FLUDARA FOR INJECTION (see WARNINGS section) have been associated with an irreversible central nervous system toxicity characterized by delayed blindness, coma and death. High doses are also associated with severe thrombocytopenia and neutropenia due to bone marrow suppression. There is no known specific antidote for FLUDARA FOR INJECTION overdosage. Treatment consists of drug discontinuation and supportive therapy.
DOSAGE AND ADMINISTRATION
Usual Dose
The recommended adult dose of FLUDARA FOR INJECTION is 25 mg/m2 administered intravenously over a period of approximately 30 minutes daily for five consecutive days. Each 5 day course of treatment should commence every 28 days. Dosage may be decreased or delayed based on evidence of hematologic or nonhematologic toxicity. Physicians should consider delaying or discontinuing the drug if neurotoxicity occurs.
A number of clinical settings may predispose to increased toxicity from FLUDARA FOR INJECTION. These include advanced age, renal impairment, and bone marrow impairment. Such patients should be monitored closely for excessive toxicity and the dose modified accordingly.
The optimal duration of treatment has not been clearly established. It is recommended that three additional cycles of FLUDARA FOR INJECTION be administered following the achievement of a maximal response and then the drug should be discontinued.
Renal Impairment
Adjustments to the starting dose are recommended to provide appropriate drug exposure in patients with creatinine clearance 30-79 mL/min, as estimated by the Cockroft-Gault equations. These adjustments are based on a pharmacokinetic study in patients with renal impairment. FLUDARA FOR INJECTION should not be administered to patients with creatinine clearance less than 30 mL/min.
Starting Dose Adjustment for Renal Impairment
Creatinine Clearance
|
Starting Dose
|
≥ 80 mL/min
|
25 mg/m2(full dose)
|
50 - 79 mL/min
|
20 mg/m2
|
30 - 49 mL/min
|
15 mg/m2
|
< 30 mL/min
|
do not administer
|
Renally impaired patients should be monitored closely for excessive toxicity and the dose modified accordingly.
Preparation of Solutions
FLUDARA FOR INJECTION should be prepared for parenteral use by aseptically adding Sterile Water for Injection, USP. When reconstituted with 2 mL of Sterile Water for Injection, USP, the solid cake should fully dissolve in 15 seconds or less; each mL of the resulting solution will contain 25 mg of fludarabine phosphate, 25 mg of mannitol, and sodium hydroxide to adjust the pH to 7.7. The pH range for the final product is 7.2-8.2. In clinical studies, the product has been diluted in 100 cc or 125 cc of 5% Dextrose Injection, USP, or 0.9% Sodium Chloride, USP.
Reconstituted FLUDARA FOR INJECTION contains no antimicrobial preservative and thus should be used within 8 hours of reconstitution. Care must be taken to assure the sterility of prepared solutions. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration.
FLUDARA FOR INJECTION should not be mixed with other drugs.
Handling and Disposal
Procedures for proper handling and disposal should be considered. Consideration should be given to handling and disposal according to guidelines issued for cytotoxic drugs. Several guidelines on this subject have been published.1-4
Caution should be exercised in the handling and preparation of FLUDARA FOR INJECTION solution. The use of latex gloves and safety glasses is recommended to avoid exposure in case of breakage of the vial or other accidental spillage. If the solution contacts the skin or mucous membranes, wash thoroughly with soap and water; rinse eyes thoroughly with plain water. Avoid exposure by inhalation or by direct contact of the skin or mucous membranes.
HOW SUPPLIED
FLUDARA FOR INJECTION is supplied as a white, lyophilized solid cake. Each vial contains 50 mg of fludarabine phosphate, 50 mg of mannitol, and sodium hydroxide to adjust pH to 7.7. The pH range for the final product is 7.2-8.2. Store under refrigeration, between 2º-8ºC (36º-46ºF).
FLUDARA FOR INJECTION is supplied in a clear glass single dose vial (6 mL capacity) and packaged in a single dose vial carton in a shelf pack of five. --------------------------------------------------------------- 原产地英文商品名: FLUDARA-50mg/Vial 原产地英文药品名: FLUDARABINE 中文参考商品译名: 福达华-50毫克/瓶 中文参考化合物名称: 氟达拉滨 产地国家: 美国 所属类别: 抗癌药物->治疗白血病药物 处方药:处方药 包装规格: 50毫克/瓶
---------------------------------------------------------------- 原产地英文商品名: FLUDARA-50mg/2ml/Vial 原产地英文药品名: FLUDARABINE 中文参考商品译名: 福达华-50毫克/2毫升/瓶 中文参考药品译名: 氟达拉滨 产地国家: 美国 所属类别: 抗癌药物->治疗白血病药物 处方药:处方药 包装规格: 50毫克/2毫升/瓶
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