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Maviret film-coated tablets(glecaprevir/pibrentasvir,G/P)

2018-02-07 16:06:27  作者:新特药房  来源:互联网  浏览次数:0  文字大小:【】【】【
简介: 泛基因型丙肝鸡尾酒Maviret获欧盟批准上市,疗程短至8周近日,欧盟委员会(EC)已批准由艾伯维开发的泛基因型丙肝鸡尾酒疗法Maviret(glecaprevir/pibrentasvir,G/P)用于全部6种基因型(GT1-6)慢性丙 ...

泛基因型丙肝鸡尾酒Maviret获欧盟批准上市,疗程短至8周
近日,欧盟委员会(EC)已批准由艾伯维开发的泛基因型丙肝鸡尾酒疗法Maviret(glecaprevir/pibrentasvir,G/P)用于全部6种基因型(GT1-6)慢性丙型肝炎病毒(HCV)成人感染者的治疗。
Maviret由固定剂量的2种独特抗病毒制剂组成,其中glecaprevir(G,100 mg)是一种NS3/4A蛋白酶抑制剂,pibrentasvir(P,40 mg)则是一种NS5A抑制剂。
Maviret每日服药一次,每次服用3片药物。该药的获批上市,将为欧洲横跨全部基因型的无肝硬化、初治(包括既往未接受治疗,以及既往已接受基于干扰素的方案([peg]IFN+/-RBV 或SOF/RBV+/-pegIFN治疗)丙肝群体提供一种每日一次、无利巴韦林(ribavirin,RBV)、疗程短至8周的口服治疗选择。此外,Maviret也适用于作为一种额外的治疗选择,用于具有特定治疗挑战的患者群体,包括伴有代偿性肝硬化的慢性HCV患者,以及目前治疗选择有限的患者,包括伴有严重慢性肾脏病(CKD)的患者,如正在接受透析治疗的患者,以及基因型3 HCV感染者。
Maviret的获批,是基于Maviret 8周治疗方案在横跨GT1-6 HCV感染群体中治疗无肝硬化、初治患者群体中所取得的高达97.5%(n=779/799)的病毒学治愈率(SVR12)。此外,Maviret在各类临床背景和病毒学特征的患者亚组中均取得了非常高的病毒学治愈率,包括伴有CDK的患者群体。在伴有肝硬化的患者中,Maviret治疗12周的治愈率为98%(n=201/205)。在有或无代偿性肝硬化的基因型3丙肝患者中,Maviret治疗16周的治愈率为96%(n=66/69)。在所有注册研究中,Maviret治疗的停药率少于0.1%,最常见的不良事件(发生率≥10%)包括头痛和疲劳,不良事件类型和严重程度在无肝硬化患者群体和伴有肝硬化患者群体中总体一致。


Maviret 100mg/40mg film-coated tablets
AbbVie Limited
contact details
Active ingredient
glecaprevir
pibrentasvir
Legal Category
POM: Prescription only medicine
1. Name of the medicinal product
Maviret 100 mg/40 mg film-coated tablets
2. Qualitative and quantitative composition
Each film-coated tablet contains 100 mg glecaprevir and 40 mg pibrentasvir.
Excipient with known effect
Each film-coated tablet contains 7.48 mg lactose (as lactose monohydrate).
For the full list of excipients, see section 6.1.
3. Pharmaceutical form
Film-coated tablet (tablet).
Pink, oblong, biconvex, film-coated tablet of dimensions 18.8 mm x 10.0 mm, debossed on one side with 'NXT'.
4. Clinical particulars
4.1 Therapeutic indications
Maviret is indicated for the treatment of chronic hepatitis C virus (HCV) infection in adults (see sections 4.2, 4.4. and 5.1).
4.2 Posology and method of administration
Maviret treatment should be initiated and monitored by a physician experienced in the management of patients with HCV infection.
Posology
The recommended dose of Maviret is 300 mg/120 mg (three 100 mg/40 mg tablets), taken orally, once daily with food (see section 5.2).
The recommended Maviret treatment durations for HCV genotype 1, 2, 3, 4, 5, or 6 infected patients with compensated liver disease (with or without cirrhosis) are provided in Table 1 and Table 2.
Table 1: Recommended Maviret treatment duration for patients without prior HCV therapy
Table 2: Recommended Maviret treatment duration for patients who failed prior therapy with peg-IFN + ribavirin +/- sofosbuvir, or sofosbuvir + ribavirin
For patients who failed prior therapy with an NS3/4A- and/or an NS5A-inhibitor, see section 4.4.
Missed dose
In case a dose of Maviret is missed, the prescribed dose can be taken within 18 hours after the time it was supposed to be taken. If more than 18 hours have passed since Maviret is usually taken, the missed dose should not be taken and the patient should take the next dose per the usual dosing schedule. Patients should be instructed not to take a double dose.
If vomiting occurs within 3 hours of dosing, an additional dose of Maviret should be taken. If vomiting occurs more than 3 hours after dosing, an additional dose of Maviret is not needed.
Elderly
No dose adjustment of Maviret is required in elderly patients (see sections 5.1 and 5.2).
Renal impairment
No dose adjustment of Maviret is required in patients with any degree of renal impairment including patients on dialysis (see sections 5.1 and 5.2).
Hepatic impairment
No dose adjustment of Maviret is required in patients with mild hepatic impairment (Child-Pugh A). Maviret is not recommended in patients with moderate hepatic impairment (Child Pugh-B) and is contraindicated in patients with severe hepatic impairment (Child-Pugh C) (see sections 4.3, 4.4, and 5.2).
Liver transplant patients
Maviret may be used for a minimum of 12 weeks in liver transplant recipients (see section 4.4). A 16 week treatment duration should be considered in genotype 3-infected patients who are treatment experienced with peg-IFN + ribavirin +/- sofosbuvir, or sofosbuvir + ribavirin.
Patients with HIV-1 Co-infection
Follow the dosing recommendations in Tables 1 and 2. For dosing recommendations with HIV antiviral agents, refer to section 4.5.
Paediatric population
The safety and efficacy of Maviret in children and adolescents aged less than 18 years have not yet been established. No data are available.
Method of administration
For oral use.
Patients should be instructed to swallow tablets whole with food and not to chew, crush or break the tablets as it may alter the bioavailability of the agents (see section 5.2).
4.3 Contraindications
Hypersensitivity to the active substances or to any of the excipients listed in section 6.1.
Patients with severe hepatic impairment (Child-Pugh C) (see sections 4.2, 4.4, and 5.2).
Concomitant use with atazanavir containing products, atorvastatin, simvastatin, dabigatran etexilate, ethinyl oestradiol-containing products, strong P-gp and CYP3A inducers (e.g., rifampicin, carbamazepine, St. John's wort (Hypericum perforatum), phenobarbital, phenytoin, and primidone) (see section 4.5).
4.4 Special warnings and precautions for use
Hepatitis B Virus reactivation
Cases of hepatitis B virus (HBV) reactivation, some of them fatal, have been reported during or after treatment with direct-acting antiviral agents. HBV screening should be performed in all patients before initiation of treatment. HBV/HCV co-infected patients are at risk of HBV reactivation, and should, therefore, be monitored and managed according to current clinical guidelines.
Liver transplant patients
The safety and efficacy of Maviret in patients who are post-liver transplant have not yet been assessed. Treatment with Maviret in this population in accordance with the recommended posology (see section 4.2) should be guided by an assessment of the potential benefits and risks for the individual patient.
Hepatic impairment
Maviret is not recommended in patients with moderate hepatic impairment (Child-Pugh B) and is contraindicated in patients with severe hepatic impairment (Child-Pugh C) (see sections 4.2, 4.3, and 5.2).
Patients who failed a prior regimen containing an NS5A- and/or an NS3/4A-inhibitor
Genotype 1-infected (and a very limited number of genotype 4-infected) patients with prior failure on regimens that may confer resistance to glecaprevir/pibrentasvir were studied in the MAGELLAN-1 study (section 5.1). The risk of failure was, as expected, highest for those exposed to both classes. A resistance algorithm predictive of the risk for failure by baseline resistance has not been established. Accumulating double class resistance was a general finding for patients who failed re-treatment with glecaprevir/pibrentasvir in MAGELLAN-1. No re-treatment data is available for patients infected with genotypes 2, 3, 5 or 6. Maviret is not recommended for the re-treatment of patients with prior exposure to NS3/4A- and/or NS5A-inhibitors.
Drug-drug interactions
Co-administration is not recommended with several medicinal products as detailed in section 4.5.
Lactose
Maviret contains lactose. Patients with rare hereditary problems of galactose intolerance, the Lapp lactase deficiency or glucose-galactose malabsorption should not take this medicinal product.
4.5 Interaction with other medicinal products and other forms of interaction
Potential for Maviret to affect other medicinal products
Glecaprevir and pibrentasvir are inhibitors of P-glycoprotein (P-gp), breast cancer resistance protein (BCRP), and organic anion transporting polypeptide (OATP) 1B1/3. Co-administration with Maviret may increase plasma concentrations of medicinal products that are substrates of P-gp (e.g. dabigatran etexilate, digoxin), BCRP (e.g. rosuvastatin), or OATP1B1/3 (e.g. atorvastatin, lovastatin, pravastatin, rosuvastatin, simvastatin). See Table 3 for specific recommendations on interactions with sensitive substrates of P-gp, BCRP, and OATP1B1/3. For other P-gp, BCRP, or OATP1B1/3 substrates, dose adjustment may be needed.
Glecaprevir and pibrentasvir are weak inhibitors of cytochrome P450 (CYP) 3A and uridine glucuronosyltransferase (UGT) 1A1 in vivo. Clinically significant increases in exposure were not observed for sensitive substrates of CYP3A (midazolam, felodipine) or UGT1A1 (raltegravir) when administered with Maviret.
Both glecaprevir and pibrentasvir inhibit the bile salt export pump (BSEP) in vitro.
Significant inhibition of CYP1A2, CYP2C9, CYP2C19, CYP2D6, UGT1A6, UGT1A9, UGT1A4, UGT2B7, OCT1, OCT2, OAT1, OAT3, MATE1 or MATE2K are not expected.
Patients treated with vitamin K antagonists
As liver function may change during treatment with Maviret, a close monitoring of International Normalised Ratio (INR) values is recommended.
Potential for other medicinal products to affect Maviret
Use with strong P-gp/CYP3A inducers
Medicinal products that are strong P-gp and CYP3A inducers (e.g., rifampicin, carbamazepine, St. John's wort (Hypericum perforatum), phenobarbital, phenytoin, and primidone) could significantly decrease glecaprevir or pibrentasvir plasma concentrations and may lead to reduced therapeutic effect of Maviret or loss of virologic response. Co-administration of such medicinal products with Maviret is contraindicated (see section 4.3).
Co-administration of Maviret with medicinal products that are moderate inducers P-gp/CYP3A may decrease glecaprevir and pibrentasvir plasma concentrations (e.g. oxcarbazepine, eslicarbazepine, lumacaftor, crizotinib). Co-administration of moderate inducers is not recommended (see section 4.4).
Glecaprevir and pibrentasvir are substrates of the efflux transporters P-gp and/or BCRP. Glecaprevir is also a substrate of the hepatic uptake transporters OATP1B1/3. Co-administration of Maviret with medicinal products that inhibit P-gp and BCRP (e.g. ciclosporin, cobicistat, dronedarone, itraconazole, ketoconazole, ritonavir) may slow elimination of glecaprevir and pibrentasvir and thereby increase plasma exposure of the antivirals. Medicinal products that inhibit OATP1B1/3 (e.g. elvitegravir, ciclosporin, darunavir, lopinavir) increase systemic concentrations of glecaprevir.
Established and other potential medicinal product interactions
Table 3 provides the least-squares mean Ratio (90% Confidence Interval) effect on concentration of Maviret and some common concomitant medicinal products. The direction of the arrow indicates the direction of the change in exposures (Cmax, AUC, and Cmin) in glecaprevir, pibrentasvir, and the co-administered medicinal product (↑ = increase (more than 25%), ↓ = decrease (more than 20%), ↔ = no change (equal to or less than 20% decrease or 25% increase). This is not an exclusive list.
Table 3: Interactions between Maviret and other medicinal products
DAA=direct acting antiviral
a. Effect of rifampicin on glecaprevir and pibrentasvir 24 hours after final rifampicin dose.
b. Effect of atazanavir and ritonavir on the first dose of glecaprevir and pibrentasvir is reported.
c. HCV-infected transplant recipients received ciclosporin dose of 100 mg or less per day had glecaprevir concentrations 4-fold higher than those not receiving ciclosporin.
Additional drug-drug interaction studies were performed with the following medical products and showed no clinically significant interactions with Maviret: abacavir, amlodipine, buprenorphine, caffeine, dextromethorphan, dolutegravir, emtricitabine, felodipine, lamivudine, lamotrigine, methadone, midazolam, naloxone, norethindrone or other progestin-only contraceptives, rilpivirine, tenofovir alafenamide and tolbutamide.
4.6 Fertility, pregnancy and lactation
Pregnancy
There are no or limited amount of data (less than 300 pregnancy outcomes) from the use of glecaprevir or pibrentasvir in pregnant women.
Studies in rats/mice with glecaprevir or pibrentasvir do not indicate direct or indirect harmful effects with respect to reproductive toxicity. Maternal toxicity associated with embryo-foetal loss has been observed in the rabbit with glecaprevir which precluded evaluation of glecaprevir at clinical exposures in this species (see section 5.3). As a precautionary measure, Maviret use is not recommended in pregnancy.
Breast-feeding
It is unknown whether glecaprevir or pibrentasvir are excreted in human milk. Available pharmacokinetic data in animals have shown excretion of glecaprevir and pibrentasvir in milk (for details see section 5.3). A risk to the suckling child cannot be excluded. A decision must be made whether to discontinue breast-feeding or to discontinue/abstain from Maviret therapy taking into account the benefit of breast-feeding for the child and the benefit of therapy for the woman.
Fertility
No human data on the effect of glecaprevir and/or pibrentasvir on fertility are available. Animal studies do not indicate harmful effects of glecaprevir or pibrentasvir on fertility at exposures higher than the exposures in humans at the recommended dose (see Section 5.3).
4.7 Effects on ability to drive and use machines
Maviret has no or negligible influence on the ability to drive and use machines.
4.8 Undesirable effects
Summary of the safety profile
The safety assessment of Maviret in subjects treated for 8, 12 or 16 weeks with compensated liver disease (with or without cirrhosis) was based on Phase 2 and 3 studies which evaluated approximately 2,300 subjects. The most commonly reported adverse reactions (incidence ≥ 10%) were headache and fatigue. Less than 0.1% of subjects treated with Maviret had serious adverse reactions (transient ischaemic attack). The proportion of subjects treated with Maviret who permanently discontinued treatment due to adverse reactions was 0.1%. The type and severity of adverse reactions in subjects with cirrhosis were overall comparable to those seen in subjects without cirrhosis.
Tabulated summary of adverse reactions
The following adverse reactions were identified in patients treated with Maviret. The adverse reactions are listed below by body system organ class and frequency. Frequencies are defined as follows: very common (≥ 1/10), common (≥ 1/100 to < 1/10), uncommon (≥ 1/1,000 to < 1/100), rare (≥ 1/10,000 to < 1/1,000) or very rare (< 1/10,000).
Table 4: Adverse reactions identified with Maviret
Description of selected adverse reactions
Adverse reactions in subjects with severe renal impairment including subjects on dialysis
The safety of Maviret in subjects with chronic kidney disease (Stage 4 or Stage 5 including subjects on dialysis) and genotypes 1, 2, 3, 4, 5 or 6 chronic HCV infection with compensated liver disease (with or without cirrhosis) was assessed in 104 subjects (EXPEDITION-4). The most common adverse reactions in subjects with severe renal impairment were pruritus (17%) and fatigue (12%).
Safety in HCV/HIV-1 Co-infected Subjects
The overall safety profile in HCV/HIV-1 co-infected subjects (ENDURANCE-1 and EXPEDITION-2) was comparable to that observed in HCV mono-infected subjects.
Serum bilirubin elevations
Elevations in total bilirubin of at least 2x upper limit normal (ULN) were observed in 1.3% of subjects related to glecaprevir-mediated inhibition of bilirubin transporters and metabolism. Bilirubin elevations were asymptomatic, transient, and typically occurred early during treatment. Bilirubin elevations were predominantly indirect and not associated with ALT elevations. Direct hyperbilirubinemia was reported in 0.3% of subjects.
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:
Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store
4.9 Overdose
The highest documented doses administered to healthy volunteers is 1,200 mg once daily for 7 days for glecaprevir and 600 mg once daily for 10 days for pibrentasvir. Asymptomatic serum ALT elevations (>5x ULN) were observed in 1 out of 70 healthy subjects following multiple doses of glecaprevir (700 mg or 800 mg) once daily for ≥ 7 days. In case of overdose, the patient should be monitored for any signs and symptoms of toxicities (see section 4.8). Appropriate symptomatic treatment should be instituted immediately. Glecaprevir and pibrentasvir are not significantly removed by haemodialysis.
5. Pharmacological properties
5.1 Pharmacodynamic properties
Pharmacotherapeutic group: Direct-acting antiviral, ATC code: not yet assigned
Mechanism of action
Maviret is a fixed-dose combination of two pan-genotypic, direct-acting antiviral agents, glecaprevir (NS3/4A protease inhibitor) and pibrentasvir (NS5A inhibitor), targeting multiple steps in the HCV viral lifecycle.
Glecaprevir
Glecaprevir is a pan-genotypic inhibitor of the HCV NS3/4A protease, which is necessary for the proteolytic cleavage of the HCV encoded polyprotein (into mature forms of the NS3, NS4A, NS4B, NS5A, and NS5B proteins) and is essential for viral replication.
Pibrentasvir
Pibrentasvir is a pan-genotypic inhibitor of HCV NS5A, which is essential for viral RNA replication and virion assembly. The mechanism of action of pibrentasvir has been characterized based on cell culture antiviral activity and drug resistance mapping studies.
Antiviral activity
The EC50 values of glecaprevir and pibrentasvir against full-length or chimeric replicons encoding NS3 or NS5A from laboratory strains are presented in Table 5.
Table 5. Activity of glecaprevir and pibrentasvir against HCV genotypes 1-6 replicon cell lines
NA = not available
The in vitro activity of glecaprevir was also studied in a biochemical assay, with similarly low IC50 values across genotypes.
EC50 values of glecaprevir and pibrentasvir against chimeric replicons encoding NS3 or NS5A from clinical isolates are presented in Table 6.
Table 6. Activity of glecaprevir and pibrentasvir against transient replicons containing NS3 or NS5A from HCV genotypes 1-6 clinical isolates
NA = not available
Resistance
In cell culture
Amino acid substitutions in NS3 or NS5A selected in cell culture or important for the inhibitor class were phenotypically characterized in replicons.
Substitutions important for the HCV protease inhibitor class at positions 36, 43, 54, 55, 56, 155, 166, or 170 in NS3 had no impact on glecaprevir activity. Substitutions at amino acid position 168 in NS3 had no impact in genotype 2, while some substitutions at position 168 reduced glecaprevir susceptibility by up to 55-fold (genotypes 1, 3, 4), or reduced susceptibility by > 100-fold (genotype 6). Some substitutions at position 156 reduced susceptibility to glecaprevir (genotypes 1 to 4) by > 100-fold. Substitutions at amino acid position 80 did not reduce susceptibility to glecaprevir except for Q80R in genotype 3a, which reduced susceptibility to glecaprevir by 21-fold.
Single substitutions important for the NS5A inhibitor class at positions 24, 28, 30, 31, 58, 92, or 93 in NS5A in genotypes 1 to 6 had no impact on the activity of pibrentasvir. Specifically in genotype 3a, A30K or Y93H had no impact on pibrentasvir activity. Some combinations of substitutions in genotypes 1a and 3a (including A30K+Y93H in genotype 3a) showed reductions in susceptibility to pibrentasvir.
In clinical studies
Studies in treatment-naïve and peginterferon (pegIFN), ribavirin (RBV) and/or sofosbuvir treatment-experienced subjects with or without cirrhosis
Twenty two of the approximately 2,300 subjects treated with Maviret for 8, 12, or 16 weeks in Phase 2 and 3 clinical studies experienced virologic failure (2 with genotype 1, 2 with genotype 2, 18 with genotype 3 infection).
Among the 2 genotype 1-infected subjects who experienced virologic failure, one had treatment-emergent substitutions A156V in NS3 and Q30R/L31M/H58D in NS5A, and one had Q30R/H58D (while Y93N was present at baseline and post-treatment) in NS5A.
Among the 2 genotype 2-infected subjects, no treatment-emergent substitutions were observed in NS3 or NS5A (the M31 polymorphism in NS5A was present at baseline and post-treatment in both subjects).
Among the 18 genotype 3-infected subjects treated with Maviret for 8, 12, or 16 weeks who experienced virologic failure, treatment-emergent NS3 substitutions Y56H/N, Q80K/R, A156G, or Q168L/R were observed in 11 subjects. A166S or Q168R were present at baseline and post-treatment in 5 subjects. Treatment-emergent NS5A substitutions M28G, A30G/K, L31F, P58T, or Y93H were observed in 16 subjects, and 13 subjects had A30K (n=9) or Y93H (n=5) at baseline and post-treatment.
Studies in subjects with or without compensated cirrhosis who were treatment-experienced to NS3/4A protease and/or NS5A inhibitors
Ten of 113 subjects treated with Maviret in the MAGELLAN-1 study for 12 or 16 weeks experienced virologic failure.
Among the 10 genotype 1-infected subjects with virologic failure, treatment-emergent NS3 substitutions V36A/M, R155K/T, A156G/T/V, or D168A/T were observed in 7 subjects. Five of the 10 had combinations of V36M, Y56H, R155K/T, or D168A/E in NS3 at baseline and post-treatment. All of the genotype 1-infected virologic failure subjects had one or more NS5A substitutions L/M28M/T/V, Q30E/G/H/K/L/R, L31M, P32 deletion, H58C/D, or Y93H at baseline, with additional treatment-emergent NS5A substitutions M28A/G, P29Q/R, Q30K, H58D, or Y93H observed in 7 of the subjects at the time of failure.
Effect of baseline HCV amino acid polymorphisms on treatment response
A pooled analysis of treatment-naïve and pegylated interferon, ribavirin and/or sofosbuvir treatment-experienced subjects receiving Maviret in the Phase 2 and Phase 3 clinical studies was conducted to explore the association between baseline polymorphisms and treatment outcome and to describe substitutions seen upon virologic failure. Baseline polymorphisms relative to a subtype-specific reference sequence at amino acid positions 155, 156, and 168 in NS3, and 24, 28, 30, 31, 58, 92, and 93 in NS5A were evaluated at a 15% detection threshold by next-generation sequencing. Baseline polymorphisms in NS3 were detected in 1.1% (9/845), 0.8% (3/398), 1.6% (10/613), 1.2% (2/164), 41.9% (13/31), and 2.9% (1/34) of subjects with HCV genotype 1, 2, 3, 4, 5, and 6 infection, respectively. Baseline polymorphisms in NS5A were detected in 26.8% (225/841), 79.8% (331/415), 22.1% (136/615), 49.7% (80/161), 12.9% (4/31), and 54.1% (20/37) of subjects with HCV genotype 1, 2, 3, 4, 5, and 6 infection, respectively.
Genotype 1, 2, 4, 5, and 6: Baseline polymorphisms in genotypes 1, 2, 4, 5 and 6 had no impact on treatment outcome.
Genotype 3: For subjects who received the recommended regimen (n=309), baseline polymorphisms in NS5A (Y93H included) or NS3 did not have a relevant impact on treatment outcomes. All subjects (15/15) with Y93H and 75% (15/20) with A30K in NS5A at baseline achieved SVR12. The overall prevalence of A30K and Y93H at baseline was 6.5% and 4.9%, respectively. The ability to assess the impact of baseline polymorphisms in NS5A was limited among treatment-naïve subjects with cirrhosis and treatment-experienced subjects due to low prevalence of A30K (1.6%, 2/128) or Y93H (3.9%, 5/128).
Cross-resistance
In vitro data indicate that the majority of the resistance-associated substitutions in NS5A at amino acid positions 24, 28, 30, 31, 58, 92, or 93 that confer resistance to ombitasvir, daclatasvir, ledipasvir, elbasvir, or velpatasvir remained susceptible to pibrentasvir. Some combinations of NS5A substitutions at these positions showed reductions in susceptibility to pibrentasvir. Glecaprevir was fully active against resistance-associated substitutions in NS5A, while pibrentasvir was fully active against resistance-associated substitutions in NS3. Both glecaprevir and pibrentasvir were fully active against substitutions associated with resistance to NS5B nucleotide and non-nucleotide inhibitors.
Clinical efficacy and safety
Table 7 summarizes clinical studies conducted with Maviret in subjects with HCV genotype 1, 2, 3, 4, 5 or 6 infection.
Table 7: Clinical studies conducted with Maviret in subjects with HCV genotype 1, 2, 3, 4, 5 or 6 Infection
TN=treatment naïve, TE=treatment experienced (includes previous treatment that included pegIFN (or IFN), and/or RBV and/or sofosbuvir), PI=Protease Inhibitor, CKD=chronic kidney disease
a. Included 33 subjects co-infected with HIV-1.
b. GT2 from SURVEYOR-2 Parts 1 and 2 - Maviret for 8 weeks (n=54) or 12 weeks (n=25); GT2 from SURVEYOR-2 Part 4 - Maviret for 8 weeks (n=145).
c. GT3 without cirrhosis from SURVEYOR-2 Parts 1 and 2 - Maviret for 8 (n=29) or 12 weeks (n=54); GT3 without cirrhosis from SURVEYOR-2 Part 3 - Maviret for 12 weeks (n=22) or 16 weeks (n=22).
d. GT3 with cirrhosis from SURVEYOR-2 Part 2 - Maviret for 12 weeks (n=24) or 16 weeks (n=4); GT3 with cirrhosis from SURVEYOR-2 Part 3 - Maviret for 12 weeks (n=40) or 16 weeks (n=47).
e. GT1, 4 from MAGELLAN-1 Part 1 - Maviret for 12 (n=22); GT1, 4 from MAGELLAN-1 Part 2 - Maviret for 12 (n=44) or 16 weeks (n=47).
Serum HCV RNA values were measured during the clinical studies using the Roche COBAS AmpliPrep/COBAS Taqman HCV test (version 2.0) with a lower limit of quantification (LLOQ) of 15 IU/mL (except for SURVEYOR-1 and SURVEYOR-2 which used the Roche COBAS TaqMan real-time reverse transcriptase-PCR (RT-PCR) assay v. 2.0 with an LLOQ of 25 IU/mL). Sustained virologic response (SVR12), defined as HCV RNA less than LLOQ at 12 weeks after the cessation of treatment, was the primary endpoint in all the studies to determine the HCV cure rate.
Clinical studies in treatment-naïve or treatment-experienced subjects with or without cirrhosis
Of the 2,409 subjects with compensated liver disease (with or without cirrhosis) treated who were treatment-naïve or treatment-experienced to combinations of peginterferon, ribavirin and/or sofosbuvir, the median age was 53 years (range: 19 to 88); 73.3% were treatment-naïve, 26.7% were treatment-experienced to a combination containing either sofosbuvir, ribavirin and/or peginterferon; 40.3% were HCV genotype 1; 19.8% were HCV genotype 2; 27.8% were HCV genotype 3; 8.1% were HCV genotype 4; 3.4% were HCV genotype 5-6; 13.1% were ≥65 years; 56.6% were male; 6.2% were Black; 12.3% had cirrhosis; 4.3% had severe renal impairment or end stage renal disease; 20.0% had a body mass index of at least 30 kg per m2; 7.7% had HIV-1 coinfection and the median baseline HCV RNA level was 6.2 log10 IU/mL.
Table 8: SVR12 in treatment-naïve and treatment-experienceda subjects to peginterferon, ribavirin and/or sofosbuvir with genotype 1, 2, 4, 5 and 6 infection who received the recommended duration (pooled data from ENDURANCE-1b, -2, -4, SURVEYOR-1, -2, and EXPEDITION-1, 2b and -4)
VF=virologic failure
a. Percent of subjects with prior treatment experience to PRS is 35%, 14%, 23%, 0%, and 18% for genotypes 1, 2, 4, 5, and 6, respectively. None of the GT5 subjects were TE-PRS, and 3 GT6 subjects were TE-PRS.
b. Includes a total of 142 subjects coinfected with HIV-1 in ENDURANCE-1 and EXPEDITION-2 who received the recommended duration.
c. Relapse is defined as HCV RNA ≥ LLOQ after end-of-treatment response among those who completed treatment.
d. Includes subjects who discontinued due to adverse event, lost to follow-up, or subject withdrawal.
Of the genotype 1-, 2-, 4-, 5-, or 6-infected subjects with end stage renal disease enrolled in EXPEDITION-4, 97.8% (91/93) achieved SVR12 with no virologic failures.
Subjects with genotype 3 infection
The efficacy of Maviret in subjects who were treatment-naïve or treatment-experienced to combinations of peginterferon, ribavirin and/or sofosbuvir with genotype 3 chronic hepatitis C infection was demonstrated in the ENDURANCE-3 (treatment-naïve without cirrhosis) and SURVEYOR-2 Part 3 (subjects with and without cirrhosis and/or treatment-experienced) clinical studies.
ENDURANCE-3 was a partially-randomized, open-label, active-controlled study in treatment-naïve subjects. Subjects were randomized (2:1) to either Maviret for 12 weeks or the combination of sofosbuvir and daclatasvir for 12 weeks; subsequently the study included a third arm (which was non-randomized) with Maviret for 8 weeks. SURVEYOR-2 Part 3 was an open-label study randomizing non-cirrhotic treatment-experienced subjects to 12- or 16-weeks of treatment; in addition, the study evaluated the efficacy of Maviret in subjects with compensated cirrhosis and genotype 3 infection in two dedicated treatment arms using 12-week (treatment-naïve only) and 16-week (treatment-experienced only) durations. Among treatment-experienced subjects, 46% (42/91) failed a previous regimen containing sofosbuvir.
Table 9: SVR12 in treatment-naïve, genotype 3-infected subjects without cirrhosis (ENDURANCE-3)
a. Relapse is defined as HCV RNA ≥ LLOQ after end-of-treatment response among those who completed treatment.
b. Includes subjects who discontinued due to adverse event, lost to follow-up, or subject withdrawal.
In a pooled analysis of treatment naïve patients without cirrhosis (including Phase 2 and 3 data) where SVR12 was assessed according to the presence of baseline A30K, a numerically lower SVR12 rate was achieved in patients with A30K treated for 8 weeks as compared to those treated for 12 weeks [78% (14/18) vs 93% (13/14)].
Table 10: SVR12 in genotype 3-infected subjects with or without cirrhosis who received the recommended duration (SURVEYOR-2 Part 3)
a. Relapse is defined as HCV RNA ≥ LLOQ after end-of-treatment response among those who completed treatment.
b. Includes subjects who discontinued due to adverse event, lost to follow-up, or subject withdrawal.
Of the genotype 3-infected subjects with end stage renal disease enrolled in EXPEDITION-4, 100% (11/11) achieved SVR12.
Overall SVR12 Rate from the Clinical Studies in Treatment-Naïve or Treatment-Experienced Subjects with or without Cirrhosis
In subjects who are treatment-naïve (TN) or treatment-experienced to combinations of interferon, peginterferon, ribavirin and/or sofosbuvir (TE-PRS) who received the recommended duration, 97.5% (1,252/1,284) achieved SVR12 overall, while 0.3% (4/1,284) experienced on-treatment virologic failure and 0.9% (11/1,262) experienced post-treatment relapse.
In TN or TE-PRS subjects with compensated cirrhosis who received the recommended duration, 97.0% (288/297) achieved SVR12 (among which 98.0% [192/196] of TN subjects achieved SVR12), while 0.7% (2/297) experienced on-treatment virologic failure and 1.0% (3/289) experienced post-treatment relapse.
In TN subjects without cirrhosis who received the recommended duration of 8 weeks, 97.5% (749/768) achieved SVR12, while 0.1% (1/768) experienced on-treatment virologic failure and 0.7% (5/755) experienced post-treatment relapse.
In TE-PRS subjects without cirrhosis who received the recommended duration, 98.2% (215/219) achieved SVR12, while 0.5% (1/219) experienced on-treatment virologic failure and 1.4% (3/218) experienced post-treatment relapse.
The presence of HIV-1 coinfection did not impact efficacy. The SVR12 rate in TN or TE-PRS HCV/HIV-1 co-infected subjects treated for 8 or 12 weeks (without cirrhosis and with compensated cirrhosis, respectively) was 98.2% (165/168) from ENDURANCE-1 and EXPEDITION-2. One subject experienced on-treatment virologic failure (0.6%, 1/168) and no subjects relapsed (0%, 0/166).
Elderly
Clinical studies of Maviret included 328 patients aged 65 and over (13.8% of the total number of subjects). The response rates observed for patients ≥ 65 years of age were similar to that of patients < 65 years of age, across treatment groups.
Paediatric population
The European Medicines Agency has deferred the obligation to submit the results of studies with glecaprevir/pibrentasvir in one or more subsets of the paediatric population from 3 years to less than 18 years in the treatment of chronic hepatitis C (see section 4.2 for information on paediatric use).
5.2 Pharmacokinetic properties
The pharmacokinetic properties of the components of Maviret are provided in Table 11.
Table 11: Pharmacokinetic properties of the components of Maviret in healthy subjects
a. Median Tmax following single doses of glecaprevir and pibrentasvir in healthy subjects.
b. Mean systemic exposure with moderate to high fat meals.
c. Single dose administration of [14C]glecaprevir or [14C]pibrentasvir in mass balance studies.
d. Oxidative metabolites or their byproducts accounted for 26% of radioactive dose. No glecaprevir metabolites were observed in plasma.
In patients with chronic hepatitis C infection without cirrhosis, following 3 days of monotherapy with either glecaprevir 300 mg per day (N=6) or pibrentasvir 120 mg per day (N=8) alone, geometric mean AUC24 values were 13600 ng∙h/mL for glecaprevir and 459 ng∙h/mL for pibrentasvir. Estimation of the pharmacokinetic parameters using population pharmacokinetic models has inherent uncertainty due to dose non-linearity and cross interaction between glecaprevir and pibrentasvir. Based on population pharmacokinetic models for Maviret in chronic hepatitis C patients, steady-state AUC24 values for glecaprevir and pibrentasvir were 4800 and 1430 ng∙h/mL in subjects without cirrhosis (N=1804), and 10500 and 1530 ng∙h/mL in subjects with cirrhosis (N=280), respectively. Relative to healthy subjects (N=230), population estimates of AUC24, ss were similar (10% difference) for glecaprevir and 34% lower for pibrentasvir in HCV-infected patients without cirrhosis.
Linearity/non-linearity
Glecaprevir AUC increased in a greater than dose-proportional manner (1200 mg QD had 516-fold higher exposure than 200 mg QD) which may be related to saturation of uptake and efflux transporters.
Pibrentasvir AUC increased in a greater than dose-proportional manner at doses up to 120 mg, (over 10-fold exposure increase at 120 mg QD compared to 30 mg QD), but exhibited linear pharmacokinetics at doses ≥ 120 mg. The non-linear exposure increase <120 mg may be related to saturation of efflux transporters.
Pibrentasvir bioavailability when coadministered with glecaprevir is 3-fold of pibrentasvir alone. Glecaprevir is affected to a lower extent by coadministration with pibrentasvir.
Pharmacokinetics in special populations
Race/ethnicity
No dose adjustment of Maviret is required based on race or ethnicity.
Gender/weight
No dose adjustment of Maviret is required based on gender or body weight.
Elderly
No dose adjustment of Maviret is required in elderly patients. Population pharmacokinetic analysis in HCV-infected subjects showed that within the age range (18 to 88 years) analysed, age did not have a clinically relevant effect on the exposure to glecaprevir or pibrentasvir.
Renal impairment
Glecaprevir and pibrentasvir AUC were increased ≤ 56% in non-HCV infected subjects with mild, moderate, severe, or end-stage renal impairment not on dialysis compared to subjects with normal renal function. Glecaprevir and pibrentasvir AUC were similar with and without dialysis (≤ 18% difference) in dialysis-dependent non-HCV infected subjects. In population pharmacokinetic analysis of HCV-infected subjects, 86% higher glecaprevir and 54% higher pibrentasvir AUC were observed for subjects with end stage renal disease, with or without dialysis, compared to subjects with normal renal function. Larger increases may be expected when unbound concentration is considered.
Overall, the changes in exposures of Maviret in HCV-infected subjects with renal impairment with or without dialysis were not clinically significant.
Hepatic impairment
At the clinical dose, compared to non-HCV infected subjects with normal hepatic function, glecaprevir AUC was 33% higher in Child-Pugh A subjects, 100% higher in Child-Pugh B subjects, and increased to 11-fold in Child-Pugh C subjects. Pibrentasvir AUC was similar in Child-Pugh A subjects, 26% higher in Child-Pugh B subjects, and 114% higher in Child-Pugh C subjects. Larger increases may be expected when unbound concentration is considered.
Population pharmacokinetic analysis demonstrated that following administration of Maviret in HCV-infected subjects with compensated cirrhosis, exposure of glecaprevir was approximately 2-fold and pibrentasvir exposure was similar to non-cirrhotic HCV-infected subjects. The mechanism for the differences between glecaprevir exposure in chronic Hepatitis C patients with or without cirrhosis is unknown.
5.3 Preclinical safety data
Glecaprevir and pibrentasvir were not genotoxic in a battery of in vitro or in vivo assays, including bacterial mutagenicity, chromosome aberration using human peripheral blood lymphocytes and in vivo rodent micronucleus assays. Carcinogenicity studies with glecaprevir and pibrentasvir have not been conducted.
No effects on mating, female or male fertility, or early embryonic development were observed in rodents at up to the highest dose tested. Systemic exposures (AUC) to glecaprevir and pibrentasvir were approximately 63 and 102 times higher, respectively, than the exposure in humans at the recommended dose.
In animal reproduction studies, no adverse developmental effects were observed when the components of Maviret were administered separately during organogenesis at exposures up to 53 times (rats; glecaprevir) or 51 and 1.5 times (mice and rabbits, respectively; pibrentasvir) higher than the human exposures at the recommended dose of Maviret. Maternal toxicity (anorexia, lower body weight, and lower body weight gain) with some embryofoetal toxicity (increase in post-implantation loss and number of resorptions and a decrease in mean foetal body weight), precluded the ability to evaluate glecaprevir in the rabbit at clinical exposures. There were no developmental effects with either compound in rodent peri/postnatal developmental studies in which maternal systemic exposures (AUC) to glecaprevir and pibrentasvir were approximately 47 and 74 times higher, respectively, than the exposure in humans at the recommended dose. Unchanged glecaprevir was the main component observed in the milk of lactating rats without effect on nursing pups. Pibrentasvir was the only component observed in the milk of lactating rats without effect on nursing pups.
6. Pharmaceutical particulars
6.1 List of excipients
Tablet core
Copovidone (Type K 28)
Vitamin E (tocopherol) polyethylene glycol succinate
Silica, colloidal anhydrous
Propylene glycol monocaprylate (Type II)
Croscarmellose sodium
Sodium stearyl fumarate
Film coating
Hypromellose 2910 (E464)
Lactose monohydrate
Titanium dioxide
Macrogol 3350
Iron oxide red (E172)
6.2 Incompatibilities
Not applicable.
6.3 Shelf life
30 months.
6.4 Special precautions for storage
This medicinal product does not require any special storage conditions.
6.5 Nature and contents of container
PVC/PE/PCTFE aluminium foil blister packs.
Pack containing 84 (4 x 21) film-coated tablets.
6.6 Special precautions for disposal and other handling
Any unused medicinal product or waste material should be disposed of in accordance with local requirements.
7. Marketing authorisation holder
AbbVie Ltd
Maidenhead
SL6 4UB
United Kingdom
8. Marketing authorisation number(s)
EU/1/17/1213/001
9. Date of first authorisation/renewal of the authorisation
26 July 2017
10. Date of revision of the text
14 December 2017
Detailed information on this product is available on the website of the European Medicines Agency http://www.ema.europa.eu
https://www.medicines.org.uk/emc/medicine/33838
-------------------------------------------------
产地国家:英国
原产地英文商品名:
Maviret film-coated tablets 100mg/40mg 84tablets
原产地英文药品名:
glecaprevir/pibrentasvir
中文参考商品译名:
Mavyret复方片 100毫克/40毫克/片 84片/盒
中文参考药品译名:
吉匹普雷韦/pibrentasvir
生产厂家中文参考译名:
艾伯维
生产厂家英文名:
AbbVie Limited

责任编辑:p53


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