英文药名:Lyxumia(Lixisenatide) 中文药名:利西拉来注射液 生产厂家:赛诺菲 Lyxumia 10 micrograms solution for injection
Description of selected adverse reactions Hypoglycaemia In patients taking Lyxumia in monotherapy, symptomatic hypoglycaemia occurred in 1.7% of lixisenatide treated patients and in 1.6% of placebo treated patients. When Lyxumia is used in combination with metformin alone, symptomatic hypoglycaemia occurred in 7.0% of lixisenatide patients and in 4.8% of placebo patients during the entire treatment period. In patients taking Lyxumia in combination with a sulphonylurea and metformin, symptomatic hypoglycaemia occurred in 22.0% of lixisenatide treated patients and in 18.4% of placebo treated patients during the entire treatment period (3.6% absolute difference). When Lyxumia is used in combination with a basal insulin with or without metformin, symptomatic hypoglycaemia occurred in 42.1% of lixisenatide patients and in 38.9% of placebo patients during the entire treatment period (3.2% absolute difference). During the entire treatment period, when Lyxumia was given with a sulphonylurea alone, symptomatic hypoglycaemia occurred in 22.7% of lixisenatide treated patients versus 15.2% with placebo (7.5% absolute difference). When Lyxumia was given with a sulphonylurea and a basal insulin, symptomatic hypoglycaemia occurred in 47.2% of lixisenatide treated patients compared to 21.6% with placebo (25.6% absolute difference). Overall, the incidence of severe symptomatic hypoglycaemia was uncommon (0.4% in lixisenatide patients and 0.2% in placebo patients) during the entire treatment period of the Phase III placebo-controlled studies. Gastrointestinal disorders Nausea and vomiting were the most frequently reported adverse reactions during the main 24-week treatment period. The incidence of nausea was higher in the lixisenatide group (26.1%) compared to the placebo group (6.2%) and the incidence of vomiting was higher in the lixisenatide group (10.5%) than in the placebo group (1.8%). They were mostly mild and transient and occured during the first 3 weeks after starting treatment. Thereafter, they progressively decreased during the following weeks. Injection site reactions Injections site reactions were reported in 3.9% of the patients receiving Lyxumia while they were reported in 1.4% of patients receiving placebo during the main 24-week treatment period. The majority of reactions were mild in intensity and usually did not result in discontinuation of the treatment. Immunogenicity Consistent with the potentially immunogenic properties of medicinal products containing proteins or peptides, patients may develop anti-lixisenatide antibodies following treatment with Lyxumia and, at the end of the main 24-week treatment period in placebo-controlled studies, 69.8% of lixisenatide patients had a positive antibody status. The percentage of patients who were antibody positive was similar at the end of the entire 76-week treatment period. At the end of the main 24-week treatment period, 32.2% of the patients having a positive antibody status had an antibody concentration above the lower limit of quantification, and at the end of the entire 76-week treatment period, 44.7% of the patients had an antibody concentration above the lower limit of quantification. After stopping the treatment, few antibody positive patients were followed-up for antibody status; the percentage decreased to approximately 90% within 3 months and 30% at 6 months or beyond. The change in HbA1c from baseline was similar regardless of the antibody status (positive or negative). Of lixisenatide-treated patients with HbA1c measurement, 79.3% had either a negative antibody status or an antibody concentration below the lower limit of quantification and the other 20.7% of patients had a quantified antibody concentration. In the subset of patients (5.2%) with the highest antibody concentrations, the mean improvement in HbA1c at Week 24 and at Week 76 was in a clinically relevant range; however there was variability in the glycaemic response and 1.9% had no decrease in HbA1c. The antibody status (positive or negative) is not predictive of the reduction of HbA1c for an individual patient. There was no difference in the overall safety profile in patients regardless of the antibody status with the exception of an increase of the incidence of injection site reactions (4.7% in antibody positive patients compared to 2.5% in antibody-negative patients during the entire treatment period). The majority of injection site reactions were mild, regardless of antibody status. There was no cross-reactivity versus either native glucagon or endogenous GLP-1. Allergic reactions Allergic reactions possibly associated with lixisenatide (such as anaphylactic reaction, angioedema and urticaria) have been reported in 0.4% of lixisenatide patients while possibly associated allergic reactions occurred in less than 0.1% of placebo patients during the main 24-week treatment period. Anaphylactic reactions were reported in 0.2% of the lixisenatide treated patients vs. none in the placebo group. Most of these reported allergic reactions were mild in severity. One case of anaphylactoid reaction was reported during clinical trials with lixisenatide. Heart rate In a study in healthy volunteers, a transient rise in heart rate has been observed after administration of lixisenatide 20 mcg. Cardiac arrhythmias particularly tachycardia (0.8% vs <0.1%) and palpitations (1.5% vs 0.8%) have been reported in lixisenatide patients compared to placebo treated patients. Withdrawal The incidence of treatment discontinuation due to adverse events was 7.4% for Lyxumia compared to 3.2% in the placebo group during the main 24-week treatment period. The most common adverse reactions which led to treatment discontinuation in the lixisenatide group were nausea (3.1%) and vomiting (1.2%). Reporting of suspected adverse reactions Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard. 4.9 Overdose During clinical studies, doses up to 30 mcg of lixisenatide twice a day were administered to type 2 diabetic patients in a 13-week study. An increased incidence of gastrointestinal disorders was observed. In case of overdose, appropriate supportive treatment should be initiated according to the patient's clinical signs and symptoms and the lixisenatide dose should be reduced to the prescribed dose. 5. Pharmacological properties 5.1 Pharmacodynamic properties Pharmacotherapeutic group: Other blood glucose lowering drugs, excl. insulins, ATC code: A10BX10. Mechanism of action Lixisenatide is a selective GLP-1 receptor agonist. The GLP-1 receptor is the target for native GLP-1, an endogenous incretin hormone that potentiates glucose-dependent insulin secretion from the pancreatic beta cells. Lixisenatide action is mediated via a specific interaction with GLP-1 receptors, leading to an increase in intracellular cyclic adenosine monophosphate (cAMP). Lixisenatide stimulates insulin secretion when blood glucose is increased but not at normoglycaemia, which limits the risk of hypoglycaemia. In parallel, glucagon secretion is suppressed. In case of hypoglycaemia, the rescue mechanism of glucagon secretion is preserved. Lixisenatide slows gastric emptying thereby reducing the rate at which meal-derived glucose appears in the circulation. Pharmacodynamic effects When administered once daily, lixisenatide improves glycaemic control through the immediate and sustained effects of lowering both post-prandial and fasting glucose concentrations in patients with type 2 diabetes. This effect on post-prandial glucose was confirmed in a 4-week study versus liraglutide 1.8 mg once a day. Reduction from baseline in the AUC 0:30-4:30h of plasma glucose after a test-meal was: -227.25 h*mg/dL (-12,61 h*mmol/L) in the lixisenatide group and -72.83 h*mg/dL (-4.04 h*mmol/L) in the liraglutide group. Clinical efficacy and safety The effects of Lyxumia on glycaemic control were evaluated in six randomised double-blind, placebo-controlled clinical studies and one randomised, open-label, active-controlled study versus exenatide. These studies included 3,825 patients with type 2 diabetes (2,445 patients randomised to lixisenatide), 48.2% men and 51.8% women. 768 subjects (447 randomised to lixisenatide) were ≥65 years of age and 103 subjects (57 randomised to lixisenatide) were ≥75 years of age. In the completed Phase III studies, it was observed that more than 90% of the patient population was able to remain on the once daily maintenance dose of 20 mcg Lyxumia at the end of the main 24-week treatment period. • Glycaemic control Add-on combination therapy with oral antidiabetics Lyxumia in combination with metformin, a sulphonylurea, pioglitazone or a combination of these agents showed statistically significant reductions in HbA1c, in fasting plasma glucose and in 2-hour post-prandial glucose after a test-meal compared to placebo at the end of the main 24-week treatment period (tables 2 and 3). The HbA1c reduction was significant with once-daily administration, whether administered morning or evening. This effect on HbA1c was sustained in long term studies for up to 76 weeks. Add-on treatment to metformin alone Table 2: Placebo-controlled studies in combination with metformin (24-week results).
In an active-controlled study, Lyxumia once daily showed an HbA1c reduction of -0.79% compared to -0.96% with exenatide twice daily at the end of the main 24-week treatment period with a mean treatment difference of 0.17% (95% CI: 0.033, 0.297) and a similar percentage of patients achieved an HbA1c less than 7% in the lixisenatide group (48.5%) and in the exenatide group (49.8%). The incidence of nausea was 24.5% in the lixisenatide group compared to35.1% in the exenatide twice daily group and the incidence of symptomatic hypoglycaemia with lixisenatide was 2.5% during the 24-week main treatment period compared to 7.9% in the exenatide group. Add-on treatment to a sulphonylurea alone or in combination with metformin Table 3: Placebo-controlled study in combination with a sulphonylurea (24-week results)
Add-on treatment to pioglitazone alone or in combination with metformin In a clinical study, the addition of lixisenatide to pioglitazone with or without metformin, in patients not adequately controlled with pioglitazone, resulted in an HbA1c decrease from baseline of 0.90%, compared to a decrease from baseline of 0.34% in the placebo group at the end of the 24-week main treatment period. At the end of the 24-week main treatment period, 52.3% of the lixisenatide patients achieved an HbA1c less than 7 % compared to 26.4% in the placebo group. During the 24-week main treatment period, nausea was reported in 23.5% in the lixisenatide group compared to 10.6% in the placebo group and symptomatic hypoglycaemia was reported in 3.4% of the lixisenatide patients compared to 1.2% in the placebo group. Add-on combination therapy with a basal insulin Lyxumia given with a basal insulin alone, or with a combination of a basal insulin and metformin, or a combination of a basal insulin and a sulphonylurea resulted in statistically significant reductions in HbA1c and in 2-hour post-prandial glucose after a test-meal compared to placebo. Table 4: Placebo-controlled studies in combination with a basal insulin (24-week results)
*performed in Asian population A clinical study was conducted in insulin-naive patients insufficiently controlled on oral antidiabetic agents. This study consisted of a 12-week run-in period with introduction and titration of insulin glargine and of a 24-week treatment period during which patients receive either lixisenatide or placebo in combination with insulin glargine and metformin with or without thiazolidinediones. Insulin glargine was continuously titrated during this period. During the 12-week run-in period, addition and titration of insulin glargine resulted approximately in an HbA1c decrease of 1%. The addition of lixisenatide led to a significantly greater HbA1c decrease of 0.71% in the lixisenatide group compared to 0.40% in the placebo group. At the end of the 24-week treatment period, 56.3% of the lixisenatide patients achieved an HbA1c less than 7 % compared to 38.5% in the placebo group. During the 24-week treatment period, 22.4% lixisenatide patients reported at least one symptomatic hypoglycaemic event compared to 13.5% in the placebo group. The incidence of hypoglycaemia was mainly increased in the lixisenatide group during the first 6 weeks of treatment and thereafter, was similar to the placebo group. • Fasting plasma glucose The reductions in fasting plasma glucose obtained with Lyxumia treatment ranged from 0.42 mmol/L to 1.19 mmol/L (7.6 to 21.4 mg/dl) from baseline at the end of the main 24-week treatment period in placebo-controlled studies. • Post-prandial glucose Treatment with Lyxumia resulted in reductions in 2-hour post-prandial glucose after a test-meal statistically superior to placebo whatever the background treatment. The reductions with Lyxumia ranged from 4.51 to 7.96 mmol/L (81.2 to 143.3 mg/dl) from baseline at the end of the main 24-week treatment period across all studies in which post-prandial glucose was measured; 26.2% to 46.8% of patients had a 2-hour post-prandial glucose value below 7.8 mmol/L (140.4 mg/dl). • Body weight Treatment with Lyxumia in combination with metformin and/or a sulphonylurea resulted in a sustained body weight change from baseline in all controlled studies in a range from -1.76 kg to -2.96 kg at the end of the main 24-week treatment period. Body weight change from baseline in a range from -0.38 kg to -1.80 kg was also observed in lixisenatide patients receiving stable basal insulin dose, alone or in combination with metformin or a sulphonylurea. In patients newly started on insulin, body weight remained almost unchanged in the lixisenatide group while an increase was shown in the placebo group. Body weight reduction was sustained in long term studies up to 76 weeks. The body weight reduction is independent from the occurrence of nausea and vomiting. • Beta cell function Clinical studies with Lyxumia indicate improved beta-cell function as measured by the homeostasis model assessment for beta-cell function (HOMA-β). Restoration of first phase insulin secretion and improved second phase insulin secretion in response to an intravenous bolus of glucose were demonstrated in patients with type 2 diabetes (n=20) after a single dose of Lyxumia. • Cardiovascular evaluation No increase in mean heart rate in patients with type 2 diabetes was seen in all placebo controlled phase III studies. Mean systolic and diastolic blood pressure reductions up to 2.1 mmHg and up to 1.5 mmHg respectively were observed in phase III placebo-controlled studies. A meta-analysis of all independently adjudicated cardiovascular events (CV death, non-fatal myocardial infarction, non-fatal stroke, hospitalization for unstable angina, hospitalization for heart failure and coronary revascularization procedure) from 8 phase III placebo-controlled studies which included 2673 type 2 diabetes patients treated with lixisenatide and 1448 patients treated with placebo showed a hazard ratio of 1.03 (95% confidence interval 0.64, 1.66) for lixisenatide versus placebo. The number of events in the clinical studies was low (1.9% in lixisenatide treated patients and 1.8% in placebo treated patients), precluding firm conclusions. The incidence of the individual CV events (lixisenatide vs placebo) was: CV death (0.3% vs 0.3%), non-fatal myocardial infarction (0.4% vs 0.4%), non-fatal stroke (0.7% vs 0.4%), hospitalization for unstable angina (zero vs 0.1%), hospitalization for heart failure (0.1% vs zero), and coronary revascularization procedure (0.7% vs 1.0%). Paediatric population The European Medicines Agency has deferred the obligation to submit the results of studies with Lyxumia in one or more subsets of the paediatric population in type 2 diabetes mellitus (see section 4.2 for information on paediatric use). 5.2 Pharmacokinetic properties Absorption Following subcutaneous administration to patients with type 2 diabetes, the rate of lixisenatide absorption is rapid and not influenced by the dose administered. Irrespective of the dose and whether lixisenatide was administered as single or multiple doses, the median tmax is 1 to 3.5 hours in patients with type 2 diabetes. There are no clinically relevant differences in the rate of absorption when lixisenatide is administered subcutaneously in the abdomen, thigh, or arm. Distribution Lixisenatide has a moderate level of binding (55%) to human proteins. The apparent volume of distribution after subcutaneous administration of lixisenatide (Vz/F) is approximately 100 L. Biotransformation and elimination As a peptide, lixisenatide is eliminated through glomerular filtration, followed by tubular reabsorption and subsequent metabolic degradation, resulting in smaller peptides and amino acids, which are reintroduced in the protein metabolism. After multiple dose administration in patients with type 2 diabetes, mean terminal half-life was approximately 3 hours and the mean apparent clearance (CL/F) about 35 L/h. Special populations Patients with renal impairment There were no relevant differences in mean Cmax and AUC of lixisenatide between subjects with normal renal function and subjects with mild impaired renal function (creatinine clearance calculated by the Cockcroft-Gault formula 50-80 ml/min). In subjects with moderate renal impairment (creatinine clearance 30-50 ml/min) AUC was increased by 24% and in subjects with severe renal impairment (creatinine clearance 15-30 ml/min) AUC was increased by 46%. Patients with hepatic impairment As lixisenatide is cleared primarily by the kidney, no pharmacokinetic study has been performed in patients with acute or chronic hepatic impairment. Hepatic dysfunction is not expected to affect the pharmacokinetics of lixisenatide. Gender Gender has no clinically relevant effect on the pharmacokinetics of lixisenatide. Race Ethnic origin had no clinically relevant effect on the pharmacokinetics of lixisenatide based on the results of pharmacokinetic studies in Caucasian, Japanese and Chinese subjects. Elderly Age has no clinically relevant effect on the pharmacokinetics of lixisenatide. In a pharmacokinetic study in elderly non-diabetic subjects, administration of lixisenatide 20 mcg resulted in a mean increase of lixisenatide AUC by 29% in the elderly population (11 subjects aged 65 to 74 years and 7 subjects aged ≥75 years) compared to 18 subjects aged 18 to 45 years, likely related to reduced renal function in the older age group. Body weight Body weight has no clinically relevant effect on lixisenatide AUC. 5.3 Preclinical safety data Non-clinical data reveal no special hazards for humans based on conventional studies of safety pharmacology and toxicology. In 2-year subcutaneous carcinogenicity studies, non-lethal C-cell thyroid tumors were seen in rats and mice and are considered to be caused by a non-genotoxic GLP-1 receptor-mediated mechanism to which rodents are particularly sensitive. C-cell hyperplasia and adenoma were seen at all doses in rats and a no observed adverse effect level (NOAEL) could be not defined. In mice, these effects occurred at exposure ratio above 9.3-fold when compared to human exposure at the therapeutic dose. No C-cell carcinoma was observed in mice and C-cell carcinoma occurred in rats with an exposure ratio relative to exposure at human therapeutic dose of about 900-fold. In 2-year subcutaneous carcinogenicity study in mice, 3 cases of adenocarcinoma in the endometrium were seen in the mid dose group with a statistically significant increase, corresponding to an exposure ratio of 97-fold. No treatment-related effect was demonstrated. Animal studies did not indicate direct harmful effects with respect to male and female fertility in rats. Reversible testicular and epididymal lesions were seen in dogs treated with lixisenatide. No related effect on spermatogenesis was seen in healthy men. In embryo-foetal development studies, malformations, growth retardation, ossification retardation and skeletal effects were observed in rats at all doses (5-fold exposure ratio compared to human exposure) and in rabbits at high doses (32-fold exposure ratio compared to human exposure) of lixisenatide. In both species, there was a slight maternal toxicity consisting of low food consumption and reduced body weight. Neonatal growth was reduced in male rats exposed to high doses of lixisenatide during late gestation and lactation, with a slightly increased pup mortality observed. 6. Pharmaceutical particulars 6.1 List of excipients Glycerol 85% Sodium acetate trihydrate Methionine Metacresol Hydrochloric acid (for pH adjustment) Sodium hydroxide solution (for pH adjustment) Water for injections 6.2 Incompatibilities In the absence of compatibility studies, this medicinal product must not be mixed with other medicinal products. 6.3 Shelf life 2 years. After first use: 14 days 6.4 Special precautions for storage Store in a refrigerator (2°C - 8°C). Do not freeze. Store away from the freezer compartment. After first use Store below 30°C. Do not freeze. Do not store with attached needle. Keep the cap on the pen in order to protect from light. 6.5 Nature and contents of container Type I glass cartridge with a (bromobutyl) rubber plunger, flanged caps (aluminium) with inserted laminated sealing disks (bromobutyl rubber on the product side and polyisoprene on the outside). Each cartridge is assembled into a disposable pen. Each green pre-filled pen contains 3 ml solution, delivering 14 doses of 10 mcg. Pack containing 1 green pre-filled pen. 6.6 Special precautions for disposal and other handling Lyxumia should not be used if it has been frozen. Lyxumia can be used with 29 to 32 gauge disposable pen needles. Pen needles are not included. The patient should be instructed to discard the needle after each use in accordance with local requirements and to store the pen without the needle attached. This helps prevent contamination and potential needle blockage. The pen is to be used for one patient only. Any unused medicinal product or waste material should be disposed of in accordance with local requirements. 7. Marketing authorisation holder sanofi-aventis groupe 54, rue La Boétie F – 75008 Paris France 8. Marketing authorisation number(s) EU/1/12/811/001 (1 pre-filled pen) 9. Date of first authorisation/renewal of the authorisation Date of first authorisation: 01 February 2013 10. Date of revision of the text 4 October 2013 Detailed information on this medicinal product is available on the website of the European Medicines Agency http://www.ema.europa.eu. |