doxil (liposomal)

Important safety information

Hand-Foot Syndrome may occur. Dose modification or discontinuation may be required ( 5.3 ) • Embryo-Fetal Toxicity: Can cause fetal harm. Advise of potential risk to a fetus. Use effective contraception ( 5.5 , 8.1 , 8.3 ) 5.1 Cardiomyopathy Doxorubicin hydrochloride can cause myocardial damage, including acute left ventricular failure. The risk of cardiomyopathy with doxorubicin hydrochloride is generally proportional to the cumulative exposure. Include prior use of other anthracyclines or anthracenediones in calculations of cumulative dose. The risk of cardiomyopathy may be increased at lower cumulative doses in patients with prior mediastinal irradiation. In a clinical study in 250 patients with advanced cancer who were treated with DOXIL liposomal infusion, the risk of cardiomyopathy was 11% when the cumulative anthracycline dose was between 450 mg/m 2 to 550 mg/m 2 . Cardiomyopathy was defined as >20% decrease in resting left ventricular ejection fraction (LVEF) from baseline where LVEF remained in the normal range or a >10% decrease in LVEF from baseline where LVEF was less than the institutional lower limit of normal. Two percent of patients developed signs and symptoms of congestive heart failure without documented evidence of cardiomyopathy. Assess left ventricular cardiac function (e.g. MUGA or echocardiogram) prior to initiation of DOXIL liposomal infusion, during treatment to detect acute changes, and after treatment to detect delayed cardiomyopathy. Administer DOXIL liposomal infusion to patients with a history of cardiovascular disease only when the potential benefit of treatment outweighs the risk. 5.2 Infusion-Related Reactions Serious, life-threatening, and fatal infusion-related reactions characterized by one or more of the following symptoms can occur with DOXIL liposomal infusion: flushing, shortness of breath, facial swelling, headache, chills, chest pain, back pain, tightness in the chest and throat, fever, tachycardia, pruritus, rash, cyanosis, syncope, bronchospasm, asthma, apnea, and hypotension. Of 239 patients with ovarian cancer treated with DOXIL liposomal infusion in Trial 4, 7% of patients experienced acute infusion-related reactions resulting in dose interruption. All occurred during cycle 1 and none during subsequent cycles. Across multiple studies of DOXIL liposomal infusion monotherapy including this and other studies enrolling 760 patients with various solid tumors, 11% of patients had infusion-related reactions. The majority of infusion-related events occurred during the first infusion. Ensure that medications to treat infusion-related reactions and cardiopulmonary resuscitative equipment are available for immediate use prior to initiation of DOXIL liposomal infusion. Initiate DOXIL liposomal infusions at a rate of 1 mg/min and increase rate as tolerated [see Dosage and Administration (2.6) ] . Withhold DOXIL liposomal infusion for Grade 1, 2, or 3 infusion-related reactions and resume at a reduced infusion rate. Discontinue DOXIL liposomal infusion for serious or life-threatening infusion-related reactions. 5.3 Hand-Foot Syndrome (HFS) In Trial 4, the incidence of HFS was 51% of patients in the DOXIL liposomal infusion arm and 0.9% of patients in the topotecan arm, including 24% Grade 3 or 4 cases of HFS in DOXIL liposomal infusion-treated patients and no Grade 3 or 4 cases in topotecan-treated patients. HFS or other skin toxicity required discontinuation of DOXIL liposomal infusion in 4.2% of patients. HFS was generally observed after 2 or 3 cycles of treatment but may occur earlier. Delay DOXIL liposomal infusion for the first episode of Grade 2 or greater HFS [see Dosage and Administration (2.5) ] . Discontinue DOXIL liposomal infusion if HFS is severe and debilitating. 5.4 Secondary Oral Neoplasms Secondary oral cancers, primarily squamous cell carcinoma, have been reported from post-marketing experience in patients with long-term (more than one year) exposure to DOXIL liposomal infusion. These malignancies were diagnosed both during treatment with DOXIL liposomal infusion and up to 6 years after the last dose. Examine patients at regular intervals for the presence of oral ulceration or with any oral discomfort that may be indicative of secondary oral cancer. The altered pharmacokinetics and preferential tissue distribution of liposomal doxorubicin that contributes to enhanced skin toxicity and mucositis compared to free doxorubicin may play a role in the development of oral secondary malignancies with long-term use. 5.5 Embryo-Fetal Toxicity Based on findings in animals and its mechanism of action, DOXIL liposomal infusion can cause fetal harm when administered to a pregnant woman; avoid the use of DOXIL liposomal infusion during the 1 st trimester. Available human data do not establish the presence or absence of major birth defects and miscarriage related to the use of doxorubicin hydrochloride during the 2 nd and 3 rd trimesters. At doses approximately 0.12 times the recommended clinical dose, DOXIL liposomal infusion was embryotoxic and abortifacient in rabbits. Advise pregnant women of the potential risk to a fetus. Advise females and males of reproductive potential to use effective contraception during and for 6 months after treatment with DOXIL liposomal infusion [see Use in Specific Populations (8.1 , 8.3 )] .