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Cresemba powder infusion(isavuconazonium sulfate)

2016-01-26 02:45:08  作者:新特药房  来源:互联网  浏览次数:0  文字大小:【】【】【
简介: 英文药名:Cresemba powder infusion(isavuconazonium sulfate) 中文药名:艾沙康唑冻干粉注射剂 生产厂家:德国:Basilea Pharmaceutica 药品介绍2015年10月16日,欧盟委员会批准Basilea抗真菌药物C ...

英文药名:Cresemba powder infusion(isavuconazonium sulfate)

中文药名:艾沙康唑冻干粉注射剂

生产厂家:德国:Basilea Pharmaceutica
药品介绍
2015年10月16日,欧盟委员会批准Basilea抗真菌药物CRESEMBA(艾沙康唑)注射剂用于治疗侵袭性曲霉病和肺毛霉病,这也是继头孢托罗酯后欧盟批准Basilea公司的第二个药物。


CRESEMBA 200 mg powder for concentrate for solution for infusion
1. Name of the medicinal product
CRESEMBA 200 mg powder for concentrate for solution for infusion
2. Qualitative and quantitative composition
Each vial contains 200 mg isavuconazole (as 372.6 mg isavuconazonium sulfate).
For the full list of excipients, see section 6.1.
3. Pharmaceutical form
Powder for concentrate for solution for infusion
White to yellow powder
4. Clinical particulars
4.1 Therapeutic indications
CRESEMBA is indicated in adults for the treatment of
• invasive aspergillosis
• mucormycosis in patients for whom amphotericin B is inappropriate (see sections 4.4 and 5.1)
Consideration should be given to official guidance on the appropriate use of antifungal agents.
4.2 Posology and method of administration
Posology
Loading dose
The recommended loading dose is one vial after reconstitution and dilution (equivalent to 200 mg of isavuconazole) every 8 hours for the first 48 hours (6 administrations in total).
Maintenance dose
The recommended maintenance dose is one vial after reconstitution and dilution (equivalent to 200 mg of isavuconazole) once daily, starting 12 to 24 hours after the last loading dose.
Duration of therapy should be determined by the clinical response (see section 5.1).
For long-term treatment beyond 6 months, the benefit-risk balance should be carefully considered (see sections 5.1 and 5.3).
Switch to oral isavuconazole
CRESEMBA is also available as hard capsules containing 100 mg isavuconazole, equivalent to 186 mg isavuconazonium sulfate.
On the basis of the high oral bioavailability (98%, see section 5.2), switching between intravenous and oral administration is appropriate when clinically indicated.
Elderly
No dose adjustment is necessary for elderly patients; however the clinical experience in elderly patients is limited.
Renal impairment
No dose adjustment is necessary in patients with renal impairment, including patients with end-stage renal disease (see section 5.2).
Hepatic impairment
No dose adjustment is necessary in patients with mild or moderate hepatic impairment (Child-Pugh Classes A and B) (see sections 4.4 and 5.2).
CRESEMBA has not been studied in patients with severe hepatic impairment (Child-Pugh Class C). Use in these patients is not recommended unless the potential benefit is considered to outweigh the risks. See sections 4.4, 4.8 and 5.2.
Paediatric population
The safety and efficacy of CRESEMBA in children aged below 18 years has not yet been established. No data are available.
Method of administration
Intravenous use.
Precautions to be taken before handling or administering the medicinal product
CRESEMBA must be reconstituted and then further diluted to a concentration corresponding to approximately 0.8 mg/mL isavuconazole prior to administration by intravenous infusion over a minimum of 1 hour to reduce the risk of infusion-related reactions. The infusion must be administered via an infusion set with an in-line filter with a microporous membrane made of polyethersulfone (PES) and with a pore size of 0.2 μm to 1.2 μm. CRESEMBA must only be given as an intravenous infusion.
For detailed instructions on the reconstitution and dilution of CRESEMBA before administration, see section 6.6.
4.3 Contraindications
Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.
Co-administration with ketoconazole (see section 4.5).
Co-administration with high-dose ritonavir (>200 mg every 12 hours) (see section 4.5).
Co-administration with strong CYP3A4/5 inducers such as rifampicin, rifabutin, carbamazepine, long-acting barbiturates (e.g. phenobarbital), phenytoin and St. John's wort or with moderate CYP3A4/5 inducers such as efavirenz, nafcillin and etravirine (see section 4.5).
Patients with familial short QT syndrome (see section 4.4).
4.4 Special warnings and precautions for use
Hypersensitivity
Caution should be used in prescribing isavuconazole to patients with hypersensitivity to other azole antifungal agents. Hypersensitivity to isavuconazole may result in adverse reactions that include: hypotension, respiratory failure, dyspnoea, drug eruption, pruritus, and rash.
Infusion-related reactions
During intravenous administration of isavuconazole, infusion-related reactions including hypotension, dyspnoea, dizziness, paraesthesia, nausea, and headache were reported (see section 4.8). The infusion should be stopped if these reactions occur.
Severe cutaneous adverse reactions
Severe cutaneous adverse reactions, such as Stevens-Johnson syndrome, have been reported during treatment with azole antifungal agents. If a patient develops a severe cutaneous adverse reaction, CRESEMBA should be discontinued.
Cardiovascular
QT shortening
CRESEMBA is contraindicated in patients with familial short QT syndrome (see section 4.3).
In a QT study in healthy human subjects, isavuconazole shortened the QTc interval in a concentration-related manner. For the 200 mg dosing regimen, the least squares mean (LSM) difference from placebo was 13.1 ms at 2 hours post dose [90% CI: 17.1, 9.1 ms]. Increasing the dose to 600 mg resulted in an LSM difference from placebo of 24.6 ms at 2 hours post dose [90% CI: 28.7, 20.4 ms].
Caution is warranted when prescribing CRESEMBA to patients taking other medicinal products known to decrease the QT interval, such as rufinamide.
Elevated liver transaminases
Elevated liver transaminases have been reported in clinical studies (see section 4.8). The elevations in liver transaminases rarely required discontinuation of CRESEMBA. Monitoring of hepatic enzymes should be considered, as clinically indicated.
Severe hepatic impairment
CRESEMBA has not been studied in patients with severe hepatic impairment (Child-Pugh Class C). Use in these patients is not recommended unless the potential benefit is considered to outweigh the risks. These patients should be carefully monitored for potential drug toxicity. See sections 4.2, 4.8 and 5.2.
Concomitant use with other medicinal products
CYP3A4/5 inhibitors
Ketoconazole is contraindicated (see section 4.3). For the strong CYP3A4 inhibitor lopinavir/ritonavir, a two-fold increase in isavuconazole exposure was observed. For other strong CYP3A4/5 inhibitors, a less pronounced effect can be expected. No dose adjustment of CRESEMBA is necessary when co-administered with strong CYP3A4/5 inhibitors, however caution is advised as adverse drug reactions may increase (see section 4.5).
CYP3A4/5 inducers
Co-administration with mild CYP3A4/5 inducers such as aprepitant, prednisone, and pioglitazone, may result in mild to moderate decreases of isavuconazole plasma levels; co-administration with mild CYP3A4/5 inducers should be avoided unless the potential benefit is considered to outweigh the risk (see section 4.5).
CYP3A4/5 substrates including immunosuppressants
Isavuconazole can be considered a moderate inhibitor of CYP3A4/5, and systemic exposure to medicinal products metabolised by CYP3A4 may be increased when co-administered with CRESEMBA. Concomitant use of CRESEMBA with CYP3A4 substrates such as the immunosuppressants tacrolimus, sirolimus or ciclosporin may increase the systemic exposure to these medicinal products. Appropriate therapeutic drug monitoring and dose adjustment may be necessary during co-administration (see section 4.5).
CYP2B6 substrates
Isavuconazole is an inducer of CYP2B6. Systemic exposure to medicinal products metabolised by CYP2B6 may be decreased when co-administered with CRESEMBA. Therefore, caution is advised when CYP2B6 substrates, especially medicinal products with a narrow therapeutic index such as cyclophosphamide, are co-administered with CRESEMBA. The use of the CYP2B6 substrate efavirenz with CRESEMBA is contraindicated because efavirenz is a moderate inducer of CYP3A4/5 (see section 4.3).
P-gp substrates
Isavuconazole may increase the exposure of medicinal products that are P-gp substrates. Dose adjustment of medicinal products that are P-gp substrates, especially medicinal products with a narrow therapeutic index such as digoxin, colchicine and dabigatran etexilate, may be needed when concomitantly administered with CRESEMBA (see section 4.5).
Limitations of the clinical data
The clinical data for isavuconazole in the treatment of mucormycosis are limitedto one prospective non-controlled clinical study in 37 patients with proven or probable mucormycosis who received isavuconazole for primary treatment, or because other antifungal treatments (predominantly amphotericin B) were inappropriate.
For individual Mucorales species, the clinical efficacy data are very limited, often to one or two patients (see section 5.1). Susceptibility data were available in only a small subset of cases. These data indicate that concentrations of isavuconazole required for inhibition in vitro are very variable between genera/species within the order of Mucorales, and generally higher than concentrations required to inhibit Aspergillus species. It should be noted that there was no dose-finding study in mucormycosis, and patients were administered the same dose of isavuconazole as was used for the treatment of invasive aspergillosis.
4.5 Interaction with other medicinal products and other forms of interaction
Potential of medicinal products to affect the pharmacokinetics of isavuconazole
Isavuconazole is a substrate of CYP3A4 and CYP3A5 (see section 5.2). Co-administration of medicinal products which are inhibitors of CYP3A4 and/or CYP3A5 may increase the plasma concentrations of isavuconazole. Co-administration of medicinal products which are inducers of CYP3A4 and/or CYP3A5 may decrease the plasma concentrations of isavuconazole.
Medicinal products that inhibit CYP3A4/5
Co-administration of CRESEMBA with the strong CYP3A4/5 inhibitor ketoconazole is contraindicated, since this medicinal product can significantly increase plasma concentrations of isavuconazole (see sections 4.3 and 4.5).
For the strong CYP3A4 inhibitor lopinavir/ritonavir, a two-fold increase in isavuconazole exposure was observed. For other strong CYP3A4 inhibitors, such as clarithromycin, indinavir and saquinavir, a less pronounced effect can be expected, based on their relative potency. No dose adjustment of CRESEMBA is necessary when co-administered with strong CYP3A4/5 inhibitors, however caution is advised as adverse drug reactions may increase (see section 4.4).
No dose adjustment is warranted for moderate to mild CYP3A4/5 inhibitors.
Medicinal products that induce CYP3A4/5
Co-administration of CRESEMBA with potent CYP3A4/5 inducers such as rifampicin, rifabutin, carbamazepine, long-acting barbiturates (e.g., phenobarbital), phenytoin and St. John's wort, or with moderate CYP3A4/5 inducers such as efavirenz, nafcillin and etravirine, is contraindicated, since these medicinal products can significantly decrease plasma concentrations of isavuconazole (see section 4.3).
Co-administration with mild CYP3A4/5 inducers such as aprepitant, prednisone and pioglitazone, may result in mild to moderate decreases of isavuconazole plasma levels; co-administration with mild CYP3A4/5 inducers should be avoided unless the potential benefit is considered to outweigh the risk (see section 4.4).
Co-administration with high-dose ritonavir (>200 mg twice daily) is contraindicated, as at high doses ritonavir may induce CYP3A4/5 and decrease isavuconazole plasma concentrations (see section 4.3).
Potential for CRESEMBA to affect exposures of other medicines
Medicinal products metabolised by CYP3A4/5
Isavuconazole is a moderate inhibitor of CYP3A4/5; co-administration of CRESEMBA with medicinal products which are substrates of CYP3A4/5 may result in increased plasma concentrations of these medicinal products.
Medicinal products metabolised by CYP2B6
Isavuconazole is a mild CYP2B6 inducer; co-administration of CRESEMBA may result in decreased plasma concentrations of CYP2B6 substrates.
Medicinal products transported by P-gp in the intestine
Isavuconazole is a mild inhibitor of P-glycoprotein (P-gp); co-administration with CRESEMBA may result in increased plasma concentrations of P-gp substrates.
Medicinal products transported by BCRP
Isavuconazole is an inhibitor in vitro of BCRP, and plasma concentrations of substrates of BCRP may therefore be increased. Caution is advised when CRESEMBA is given concomitantly with substrates of BCRP.
Medicinal products renally excreted via transport proteins
Isavuconazole is a mild inhibitor of the organic cation transporter 2 (OCT2). Co-administration of CRESEMBA with medicinal products which are substrates of OCT2 may result in increased plasma concentrations of these medicinal products.
Uridine diphosphate-glucuronosyltransferases (UGT) substrates
Isavuconazole is a mild inhibitor of UGT. Co-administration of CRESEMBA with medicinal products which are substrates of UGT may result in mildly increased plasma concentrations of these medicinal products.
Interaction table
Interactions between isavuconazole and co-administered medicinal products are listed in Table 1 (increase is indicated as “↑”, decrease as “↓”), ordered by therapeutic class. Unless otherwise stated, studies detailed in Table 1 have been performed with the recommended dose of CRESEMBA.
Table 1 Interactions

Co-administered medicinal product by therapeutic area

Effects on drug concentrations / Geometric Mean Change (%) in AUC, Cmax

(Mode of action)

Recommendation concerning co-administration

Anticonvulsants

Carbamazepine, phenobarbital and phenytoin

(strong CYP3A4/5 inducers)

Isavuconazole concentrations may decrease (CYP3A induction by carbamazepine, phenytoin and long-acting barbiturates such as phenobarbital).

The concomitant administration of CRESEMBA and carbamazepine, phenytoin and long-acting barbiturates such as phenobarbital is contraindicated.

Antibacterials

   

Rifampicin

(strong CYP3A4/5 inducer)

Isavuconazole:

AUCtau: ↓ 90%

Cmax: ↓ 75%

(CYP3A4/5 induction)

The concomitant administration of CRESEMBA and rifampicin is contraindicated.

Rifabutin

(strong CYP3A4/5 inducer)

Not studied.

Isavuconazole concentrations may significantly decrease.

(CYP3A4/5 induction)

The concomitant administration of CRESEMBA and rifabutin is contraindicated.

Nafcillin

(moderate CY3A4/5 inducer)

Not studied.

Isavuconazole concentrations may significantly decrease.

(CYP3A4/5 induction)

The concomitant administration of CRESEMBA and nafcillin is contraindicated.

Clarithromycin

(strong CYP3A4/5 inhibitor)

Not studied.

Isavuconazole concentrations may increase.

(CYP3A4/5 inhibition)

No CRESEMBA dose adjustment necessary; caution is advised as adverse drug reactions may increase.

Antifungals

Ketoconazole

(strong CYP3A4/5 inhibitor)

Isavuconazole:

AUCtau: ↑ 422%

Cmax: ↑ 9%

(CYP3A4/5 inhibition)

The concomitant administration of CRESEMBA and ketoconazole is contraindicated.

Herbal medicines

St John's wort

(strong CYP3A4/5 inducer)

Not studied.

Isavuconazole concentrations may significantly decrease.

(CYP3A4 induction).

The concomitant administration of CRESEMBA and St John's wort is contraindicated.

Immunosuppresants

Ciclosporin, sirolimus, tacrolimus

(CYP3A4/5 substrates)

Ciclosporin:

AUCinf: ↑ 29%

Cmax: ↑ 6%

Sirolimus:

AUCinf: ↑ 84%

Cmax: ↑ 65%

Tacrolimus:

AUCinf: ↑ 125%

Cmax: ↑ 42%

(CYP3A4 inhibition)

No CRESEMBA dose adjustment necessary.

Ciclosporin, sirolimus, tacrolimus: monitoring of plasma levels and appropriate dose adjustment if required.

Mycophenolate mofetil (MMF)

(UGT substrate)

Mycophenolic acid (MPA, active metabolite) :

AUCinf: ↑ 35%

Cmax: ↓ 11%

(UGT inhibition)

No CRESEMBA dose adjustment necessary.

MMF: monitoring for MPA-related toxicities is advised.

Prednisone

(CYP3A4 substrate)

Prednisolone (active metabolite):

AUCinf: ↑ 8%

Cmax: ↓ 4%

(CYP3A4 inhibition)

Isavuconazole concentrations may decrease.

(CYP3A4/5 induction)

Co-administration should be avoided unless the potential benefit is considered to outweigh the risk.

Opioids

Short-acting opiates (alfentanyl, fentanyl)

(CYP3A4/5 substrate)

Not studied.

Short-acting opiate concentrations may increase.

(CYP3A4/5 inhibition).

No CRESEMBA dose adjustment necessary.

Short-acting opiates (alfentanyl, fentanyl): careful monitoring for any occurrence of drug toxicity, and dose reduction if required.

Methadone

(CYP3A4/5, 2B6 and 2C9 substrate)

S-methadone (inactive opiate isomer)

AUCinf: ↓ 35%

Cmax: ↑ 1%

40% reduction in terminal half-life

R-methadone (active opiate isomer).

AUCinf: ↓ 10%

Cmax: ↑ 4%

(CYP2B6 induction)

No CRESEMBA dose adjustment necessary.

Methadone: no dose adjustment required.

Anti-cancer

Vinca alkaloids (vincristine, vinblastine)

(P-gp substrates)

Not studied.

Vinca alkaloid concentrations may increase.

(P-gp inhibition)

No CRESEMBA dose adjustment necessary.

Vinca alkaloids: careful monitoring for any occurrence of drug toxicity, and dose reduction if required.

Cyclophosphamide

(CYP2B6 substrate)

Not studied.

Cyclophosphamide concentrations may decrease.

(CYP2B6 induction)

No CRESEMBA dose adjustment necessary.

Cyclophosphamide: careful monitoring for any occurrence of lack of efficacy, and dose increase if required..

Methotrexate

(BCRP, OAT1, OAT3 substrate)

Methotrexate:

AUCinf: ↓ 3%

Cmax: ↓ 11%

7-hydroxymetabolite:

AUCinf: ↑ 29%

Cmax: ↑ 15%

(Mechanism unknown)

No CRESEMBA dose adjustment necessary.

Methotrexate: no dose adjustment required.

Other anticancer agents (daunorubicin, doxorubicin, imatinib, irinotecan, lapatinib, mitoxantrone, topotecan)

(BCRP substrates)

Not studied.

Daunorubicin, doxorubicin, imatinib, irinotecan, lapatinib, mitoxantrone, topotecan concentrations may increase.

(BCRP inhibition)

No CRESEMBA dose adjustment necessary.

Daunorubicin, doxorubicin, imatinib, irinotecan, lapatinib, mitoxantrone or topotecan: careful monitoring for any occurrence of drug toxicity, and dose reduction if required.

Antiemetics

Aprepitant

(mild CYP3A4/5 inducer)

Not studied.

Isavuconazole concentrations may decrease.

(CYP3A4/5 induction)

Co-administration should be avoided unless the potential benefit is considered to outweigh the risk.

Antidiabetics

Metformin

(OCT1, OCT2 and MATE1 substrate)

Metformin:

AUCinf: ↑ 52%

Cmax: ↑ 23%

(OCT2 inhibition)

No CRESEMBA dose adjustment necessary.

Metformin: dose reduction may be required.

Repaglinide

(CYP2C8 and OATP1B1 substrate)

Repaglinide:

AUCinf: ↓ 8%

Cmax: ↓ 14%

No CRESEMBA dose adjustment necessary.

Repaglinide: no dose adjustment required.

Anticoagulants

Dabigatran etexilate

(P-gp substrate)

Not studied.

Dabigatran etexilate concentrations may increase.

(P-gp inhibition).

No CRESEMBA dose adjustment necessary.

Dabigatran etexilate has a narrow therapeutic index and should be monitored, and dose reduction if required.

Warfarin

(CYP2C9 substrate)

S-warfarin

AUCinf: ↑ 11%

Cmax: ↓ 12%

R-warfarin

AUCinf: ↑ 20%

Cmax: ↓ 7%

No CRESEMBA dose adjustment necessary.

Warfarin: no dose adjustment required.

Antiretroviral agents

Lopinavir 400 mg / Ritonavir 100 mg

(CYP3A4/5 strong inhibitors and substrates)

Lopinavir:

AUCtau: ↓ 27%

Cmax: ↓ 23%

Cmin, ss: ↓ 16%a)

Ritonavir:

AUCtau: ↓ 31%

Cmax: ↓ 33%

(Mechanism unknown)

Isavuconazole:

AUCtau: ↑ 96%

Cmax: ↑ 74%

(CYP3A4/5 inhibition)

No CRESEMBA dose adjustment necessary; caution is advised as adverse drug reactions may increase.

Lopinavir/ritonavir: no dose adjustment for lopinavir 400 mg / ritonavir 100 mg every 12 hours required, but careful monitoring for any occurrence of lack of anti-viral efficacy.

Ritonavir (at doses >200 mg every 12 hours)

(strong CYP3A4/5 inducer)

Not studied.

Ritonavir at high doses may significantly decrease isavuconazole concentrations.

(CYP3A4/5 induction)

The concomitant administration of CRESEMBA and high doses of ritonavir (>200 mg every 12 hours) is contraindicated.

Efavirenz

(CYP3A4/5 moderate inducer and CYP2B6 substrate)

Not studied.

Efavirenz concentrations may decrease.

(CYP2B6 induction)

Isavuconazole drug concentrations may significantly decrease.

(CYP3A4/5 induction)

The concomitant administration of CRESEMBA and efavirenz is contraindicated. .

Etravirine

(moderate CYP3A4/5 inducer)

Not studied.

Isavuconazole concentrations may significantly decrease.

(CYP3A4/5 induction)

The concomitant administration of CRESEMBA and etravirine is contraindicated.

Indinavir

(CYP3A4/5 strong inhibitor and substrate)

Indinavir:b)

AUCinf: ↓ 36%

Cmax: ↓ 52%

(Mechanism unknown)

Isavuconazole concentrations may increase.

(CYP3A4/5 inhibition)

No CRESEMBA dose adjustment necessary; caution is advised as adverse drug reactions may increase.

Indinavir: careful monitoring for any occurrence of lack of anti-viral efficacy, and dose increase if required.

Saquinavir

(strong CYP3A4 inhibitor)

Not studied.

Saquinavir concentrations may decrease (as observed with lopinavir/ritonavir) or increase (CYP3A4 inhibition).

Isavuconazole concentrations may increase.

(CYP3A4/5 inhibition).

No CRESEMBA dose adjustment necessary; caution is advised as adverse drug reactions may increase.

Saquinavir: careful monitoring for any occurrence of drug toxicity and /or lack of anti-viral efficacy, and dose adjustment if required

Other protease inhibitors (e.g., amprenavir, nelfinavir)

(CYP3A4/5 strong or moderate inhibitors and substrates)

Not studied.

Protease inhibitor concentrations may decrease (as observed with lopinavir/ritonavir) or increase.

(CYP3A4 inhibition)

Isavuconazole concentrations may increase.

(CYP3A4/5 inhibition).

No CRESEMBA dose adjustment necessary.

Protease inhibitors: careful monitoring for any occurrence of drug toxicity and /or lack of anti-viral efficacy, and dose adjustment if required.

Other NNRTI (e.g., delavirdine, and nevaripine)

(CYP3A4/5 and 2B6 inducers and substrates)

Not studied.

NNRTI concentrations may decrease (CYP2B6 induction by isavuconazole) or increase.

(CYP3A4/5 inhibition)

No CRESEMBA dose adjustment necessary.

NNRTIs: careful monitoring for any occurrence of drug toxicity and/or lack of anti-viral efficacy, and dose adjustment if required.

Antiacids

Esomeprazole

(CYP2C19 substrate and gastric pH ↑)

Isavuconazole:

AUCtau: ↑ 8%

Cmax: ↑ 5%

No CRESEMBA dose adjustment necessary.

Esomeprazole: no dose adjustment required.

Omeprazole

(CYP2C19 substrate and gastric pH ↑)

Omeprazole:

AUCinf: ↓ 11%

Cmax: ↓ 23%

No CRESEMBA dose adjustment necessary.

Omeprazole: no dose adjustment required.

Lipid-lowering agents

Atorvastatin and other statins (CYP3A4 substrates e.g., simvastatin, lovastatin, rosuvastatin)

(CYP3A4/5 and/or BCRP substrates))

Atorvastatin :

AUCinf: ↑ 37%

Cmax: ↑ 3%

Other statins were not studied.

Statins concentrations may increase.

(CYP3A4/5 or BCRP inhibition)

No CRESEMBA dose adjustment necessary.

Based on results with atorvastatin, no statin dose adjustment required. Monitoring of adverse reactions typical of statins is advised.

Pioglitazone

(mild CYP3A4/5 inducer)

Not studied.

Isavuconazole concentrations may decrease.

(CYP3A4/5 induction)

Co-administration should be avoided unless the potential benefit is considered to outweigh the risk.

Antiarrhythmics

Digoxin

(P-gp substrate)

Digoxin:

AUCinf: ↑ 25%

Cmax: ↑ 33%

(P-gp inhibition)

No CRESEMBA dose adjustment necessary.

Digoxin: serum digoxin concentrations should be monitored and used for titration of the digoxin dose.

Oral contraceptives

Ethinyl oestradiol and norenthrindone

(CYP3A4/5 substrates)

Ethinyl oestradiol

AUCinf: ↑ 8%

Cmax: ↑ 14%

Norenthrindone

AUCinf: ↑ 16%

Cmax: ↑ 6%

No CRESEMBA dose adjustment necessary.

Ethinyl oestradiol and norenthrindone: no dose adjustment required.

Antitussives

Dextromethorphan

(CYP2D6 substrate)

Dextromethorphan:

AUCinf: ↑ 18%

Cmax: ↑ 17%

Dextrorphan (active metabolite):

AUCinf: ↑ 4%

Cmax: ↓ 2%

No CRESEMBA dose adjustment necessary.

Dextromethorphan: no dose adjustment required.

Benzodiazepines

Midazolam

(CYP3A4/5 substrate)

Oral midazolam:

AUCinf: ↑ 103%

Cmax: ↑ 72%

(CYP3A4 inhibition)

No CRESEMBA dose adjustment necessary.

Midazolam: careful monitoring of clinical signs and symptoms recommended, and dose reduction if required.

Antigout agent

Colchicine

(P-gp substrate)

Not studied.

Colchicine concentrations may increase.

(P-gp inhibition)

No CRESEMBA dose adjustment necessary.

Colchicine has a narrow

therapeutic index and should be monitored, dose reduction if required.

Natural products

Caffeine

(CYP1A2 substrate)

Caffeine:

AUCinf: ↑ 4%

Cmax: ↓ 1%

No CRESEMBA dose adjustment necessary.

Caffeine: no dose adjustment required.

Smoking cessation aids

Bupropion

(CYP2B6 substrate)

Buproprion:

AUCinf: ↓ 42%

Cmax: ↓ 31%

(CYP2B6 induction)

No CRESEMBA dose adjustment necessary.

Bupropion: dose increase if required.

NNRTI, non-nucleoside reverse-transcriptase inhibitor; P-gp, P-glycoprotein.

a) % decrease of the mean trough level values

b) Indinavir was only studied after a single dose of 400 mg isavuconazole.

AUCinf = area under the plasma concentration-time profiles extrapolated to infinity; AUCtau = area under the plasma concentration-time profiles during the 24 h interval at steady state; Cmax = peak plasma concentration; Cmin,ss = trough levels at steady state.

4.6 Fertility, pregnancy and lactation
Pregnancy
There are no data from the use of CRESEMBA in pregnant women.
Studies in animals have shown reproductive toxicity (see section 5.3). The potential risk for humans is unknown.
CRESEMBA must not be used during pregnancy except in patients with severe or potentially life-threatening fungal infections, in whom isavuconazole may be used if the anticipated benefits outweigh the possible risks to the foetus.
Women of child-bearing potential
CRESEMBA is not recommended for women of childbearing potential who are not using contraception.
Breast-feeding
Available pharmacodynamic/toxicological data in animals have shown excretion of isavuconazole/metabolites in milk (see section 5.3).
A risk to newborns and infants cannot be excluded.
Breast-feeding should be discontinued during treatment with CRESEMBA.
Fertility
There are no data on the effect of isavuconazole on human fertility. Studies in animals did not show impairment of fertility in male or female rats (see section 5.3).
4.7 Effects on ability to drive and use machines
Isavuconazole has a moderate potential to influence the ability to drive and use machines. Patients should avoid driving or operating machinery if symptoms of confusional state, somnolence, syncope, and/or dizziness are experienced.
4.8 Undesirable effects
Summary of the safety profile
The frequency of adverse reactions shown in Table 2 is based on data from 403 patients with invasive fungal infections treated with CRESEMBA in phase 3 studies.
The most common treatment-related adverse reactions were elevated liver chemistry tests (7.9%), nausea (7.4%), vomiting (5.5%), dyspnoea (3.2%), abdominal pain (2.7%), diarrhoea (2.7%), injection site reaction (2.2%), headache (2.0%), hypokalaemia (1.7%) and rash (1.7%).
The adverse reactions which most often led to permanent discontinuation of CRESEMBA treatment were confusional state (0.7%), acute renal failure (0.7%), increased blood bilirubin (0.5%), convulsion (0.5%), dyspnoea (0.5%), epilepsy (0.5%), respiratory failure (0.5%) and vomiting (0.5%).
Tabulated list of adverse reactions
Table 2 presents adverse reactions with isavuconazole in the treatment of invasive fungal infections, by System Organ Class and frequency.
The frequency of adverse reactions is defined as follows: very common (≥1/10); common (≥1/100 to <1/10); and uncommon (≥1/1,000 to <1/100).
Within each frequency grouping, adverse reactions are presented in order of decreasing seriousness.
Table 2 Summary of adverse reactions by MedDRA System Organ Class and frequency

System Organ Class

Adverse Drug Reactions

Blood and lymphatic system disorders

Uncommon

Neutropenia; Thrombocytopenia^; Pancytopenia; Leukopenia^; Anaemia^

Immune system disorders

Uncommon

Hypersensitivity^

Metabolism and nutrition disorders

Common

Hypokalaemia; Decreased appetite

Uncommon

Hypomagnesaemia; Hypoglycaemia; Hypoalbuminaemia; Malnutrition^;

Psychiatric disorders

Common

Delirium^#;

Uncommon

Depression; Insomnia^

Nervous system disorders

Common

Headache; Somnolence

Uncommon

Convulsion^; Syncope; Dizziness ; Paraesthesia^; Encephalopathy; Presyncope; Neuropathy peripheral; Dysgeusia;

Ear and labyrinth disorders

Uncommon

Vertigo

Cardiac disorders

Uncommon

Atrial fibrillation; Tachycardia; Bradycardia^; Palpitations

Atrial flutter; Electrocardiogram QT shortened; Supraventricular tachycardia; Ventricular extrasystoles ; Supraventricular extrasystoles

Vascular disorders

Common

Thrombophlebitis^

Uncommon

Circulatory collapse; Hypotension

Respiratory, thoracic and mediastinal disorders

Common

Dyspnoea;^ Acute respiratory failure^

Uncommon

Bronchospasm; Tachypnoea; Haemoptysis; Epistaxis

Gastrointestinal disorders

Common

Vomiting; Diarrhoea; Nausea; Abdominal pain^;

Uncommon

Dyspepsia; Constipation; Abdominal distension

Hepatobiliary disorders

Common

Elevated liver chemistry tests^#

Uncommon

Hepatomegaly

Skin and subcutaneous tissue disorders

Common

Rash^; Pruritus

Uncommon

Petechiae; Alopecia; Drug eruption; Dermatitis^

Musculoskeletal and connective tissue disorders

Uncommon

Back pain

Renal and urinary disorders

Common

Renal failure

General disorders and administration site conditions

Common

Chest pain^; Fatigue; Injection site reaction^

Uncommon

Oedema peripheral;^ Malaise; Asthenia

^ Indicates that grouping of appropriate preferred terms into a single medical concept occurred.

# See section Description of selected adverse reactions below

Description of selected adverse reactions
Delirium includes reactions of confusional state.
Elevated liver chemistry tests includes events of alanine aminotransferase increased, aspartate aminotransferase increased, blood alkaline phosphatase increased, blood bilirubin increased, blood lactate dehydrogenase increased, gamma-glutamyltransferase increased, hepatic enzyme increased, hepatic function abnormal, hyperbilirubinemia, liver function test abnormal, and transaminases increased.
Laboratory effects
In a double-blind, randomized, active-controlled clinical study of 516 patients with invasive fungal disease caused by Aspergillus species or other filamentous fungi, elevated liver transaminases (alanine aminotransferase or aspartate aminotransferase) > 3 × Upper Limit of Normal (ULN) were reported at the end of study treatment in 4.4% of patients who received CRESEMBA. Marked elevations of liver transaminases > 10 × ULN developed in 1.2% of patients on isavuconazole.
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
Symptoms
Symptoms reported more frequently at supratherapeutic doses of CRESEMBA (equivalent to isavuconazole 600 mg/day) evaluated in a QT study than in the therapeutic dose group (equivalent to isavuconazole 200 mg/day dose) included: headache, dizziness, paraesthesia, somnolence, disturbance in attention, dysgeusia, dry mouth, diarrhoea, oral hypoaesthesia, vomiting, hot flush, anxiety, restlessness, palpitations, tachycardia, photophobia and arthralgia
Management of overdose
Isavuconazole is not removed by haemodialysis. There is no specific antidote for isavuconazole. In the event of an overdose, supportive treatment should be instituted.
5. Pharmacological properties
5.1 Pharmacodynamic properties
Pharmacotherapeutic group: Antimycotics for systemic use, triazole derivatives, ATC code: J02AC05
Mechanism of action
Isavuconazole is the active moiety formed after oral or intravenous administration of isavuconazonium sulfate (see section 5.2).
Isavuconazole demonstrates a fungicidal effect by blocking the synthesis of ergosterol, a key component of the fungal cell membrane, through the inhibition of cytochrome P-450-dependent enzyme lanosterol 14-alpha-demethylase, responsible for the conversion of lanosterol to ergosterol. This results in an accumulation of methylated sterol precursors and a depletion of ergosterol within the cell membrane, thus weakening the structure and function of the fungal cell membrane.
Microbiology
In animal models of disseminated and pulmonary aspergillosis, the pharmacodynamic (PD) index important in efficacy is exposure divided by minimum inhibitory concentration (MIC) (AUC/MIC).
No clear correlation between in vitro MIC and clinical response for the different species (Aspergillus and Mucorales) could be established.
Concentrations of isavuconazole required to inhibit Aspergillus species and genera/species of the order Mucorales in vitro have been very variable. Generally, concentrations of isavuconazole required to inhibit Mucorales are higher than those required to inhibit the majority of Aspergillus species.
Clinical efficacy has been demonstrated for the following Aspergillus species: Aspergillus fumigatus, A. flavus, A. niger, and A. terreus(see further below).
Mechanism(s) of resistance
Reduced susceptibility to triazole antifungal agents has been associated with mutations in the fungal cyp51A and cyp51B genes coding for the target protein lanosterol 14-alpha-demethylase involved in ergosterol biosynthesis. Fungal strains with reduced in vitro susceptibility to isavuconazole have been reported, and cross-resistance with voriconazole and other triazole antifungal agents cannot be excluded.
Breakpoints
EUCAST MIC breakpoints are defined for the following species (susceptible S; resistant R):
Aspergillus fumigatus:
Aspergillus nidulans:
Aspergillus terreus:
S ≤ 1 mg/L, R > 1 mg/L
S ≤ 0.25 mg/L, R > 0.25 mg/L
S ≤ 1 mg/L, R > 1 mg/L
There are currently insufficient data to set clinical breakpoints for other Aspergillus species.
Clinical efficacy and safety
Treatment of invasive aspergillosis
The safety and efficacy of isavuconazole for the treatment of patients with invasive aspergillosis was evaluated in a double-blind, active-controlled clinical study in 516 patients with invasive fungal disease caused by Aspergillus species or other filamentous fungi. In the intent-to-treat (ITT) population, 258 patients received isavuconazole and 258 patients received voriconazole. CRESEMBA was administered intravenously (equivalent to 200 mg isavuconazole) every 8 hours for the first 48 hours, followed by once-daily intravenous or oral treatment (equivalent to 200 mg isavuconazole). The protocol-defined maximum treatment duration was 84 days. Median treatment duration was 45 days.
The overall response at end-of-treatment (EOT) in the myITT population (patients with proven and probable invasive aspergillosis based on cytology, histology, culture or galactomannan testing) was assessed by an independent blinded Data Review Committee. The myITT population comprised 123 patients receiving isavuconazole and 108 patients receiving voriconazole. The overall response in this population was n = 43 (35%) for isavuconazole and n = 42 (38.9%) for voriconazole. The adjusted treatment difference (voriconazole−isavuconazole) was 4.0 (95% confidence interval: −7.9; 15.9).
The all-cause mortality at Day 42 in this population was 18.7% for isavuconazole and 22.2% for voriconazole. The adjusted treatment difference (isavuconazole−voriconazole) was −2.7% (95 % confidence interval: −12.9; 7.5).
Treatment of mucormycosis
In an open-label non-controlled study, 37 patients with proven or probable mucormycosis received isavuconazole at the same dose regimen as that used to treat invasive aspergillosis. Median treatment duration was 84 days for the overall mucormycosis patient population, and 102 days for the 21 patients not previously treated for mucormycosis. For patients with probable or proven mucormycosis as defined by the independent Data Review Committee (DRC), all-cause mortality at Day 84 was 43.2% (16/37) for the overall patient population, 42.9% (9/21) for mucormycosis patients receiving isavuconazole as primary treatment, and 43.8% (7/16) for mucormycosis patients receiving isavuconazole who were refractory to, or intolerant of, prior antifungal therapy (mainly amphotericin B-based treatments). The DRC-assessed overall success rate at EOT was 11/35 (31.4%), with 5 patients considered completely cured and 6 patients partially cured. A stable response was observed in an additional 10/35 patients (28.6%). In 9 patients with mucormycosis due to Rhizopus spp., 4 patients showed a favourable response to isavuconazole. In 5 patients with mucormycosis due to Rhizomucor spp., no favourable responses were observed. The clinical experience in other species is very limited (Lichtheimia spp. n=2, Cunninghamella spp. n=1, Actinomucor elegans n=1).
Paediatric population
The European Medicines Agency has deferred the obligation to submit the results of studies with CRESEMBA in one or more subsets of the paediatric population in the treatment of invasive aspergillosis and the treatment of mucormycosis (see section 4.2 for information on paediatric use).
5.2 Pharmacokinetic properties
Isavuconazonium sulfate is a water-soluble prodrug that can be administered as an intravenous infusion or orally as hard capsules. Following administration, isavuconazonium sulfate is rapidly hydrolysed by plasma esterases to the active moiety isavuconazole; plasma concentrations of the prodrug are very low, and detectable only for a short time after intravenous dosing.
Absorption
Following oral administration of CRESEMBA in healthy subjects, the active moiety isavuconazole is absorbed and reaches maximum plasma concentrations (Cmax) approximately 2–3 hours after single and multiple dosing (see Table 3).
Table 3 Steady state pharmacokinetic parameters of isavuconazole following oral administration of CRESEMBA

Parameter

Statistic

Isavuconazole 200 mg

(n = 37)

Isavuconazole 600 mg

(n = 32)

Cmax (ng/mL)

Mean

SD

CV %

7499

1893.3

25.2

20028

3584.3

17.9

tmax (h)

Median

Range

3.0

2.0 – 4.0

4.0

2.0 – 4.0

AUC (h•ng/mL)

Mean

SD

CV %

121402

35768.8

29.5

352805

72018.5

20.4

As shown in table 4 below, the absolute bioavailability of isavuconazole following oral administration of a single dose of CRESEMBA is 98%. Based on these findings, intravenous and oral dosing can be used interchangeably.
Table 4 Pharmacokinetic comparison for oral and intravenous dose (Mean)

ISA 400 mg oral

ISA 400 mg i.v.

AUC (hng/mL)

189462.8

193906.8

CV %

36.5

37.2

Half-life (h)

110

115

Effect of food on absorption
Oral administration of CRESEMBA equivalent to 400 mg isavuconazole with a high-fat meal reduced isavuconazole Cmax by 9% and increased AUC by 9%. CRESEMBA can be taken with or without food.
Distribution
Isavuconazole is extensively distributed, with a mean steady state volume of distribution (Vss) of approximately 450 L. Isavuconazole is highly bound (> 99%) to human plasma proteins, predominantly to albumin.
Biotransformation
In vitro / in vivo studies indicate that CYP3A4, CYP3A5, and subsequently uridine diphosphate-glucuronosyltransferases (UGT), are involved in the metabolism of isavuconazole.
Following single doses of [cyano-14C] isavuconazonium and [pyridinylmethyl-14C] isavuconazonium sulfate in humans, in addition to the active moiety (isavuconazole) and the inactive cleavage product, a number of minor metabolites were identified. Except for the active moiety isavuconazole, no individual metabolite was observed with an AUC > 10% of total radio-labelled material.
Elimination
Following oral administration of radio-labelled isavuconazonium sulfate to healthy subjects, a mean of 46.1% of the radioactive dose was recovered in faeces, and 45.5% was recovered in urine.
Renal excretion of intact isavuconazole was less than 1% of the dose administered.
The inactive cleavage product is primarily eliminated by metabolism and subsequent renal excretion of the metabolites.
Linearity/non-linearity
Studies in healthy subjects have demonstrated that the pharmacokinetics of isavuconazole are proportional up to 600 mg per day.
Pharmacokinetics in special populations
Paediatric patients
The pharmacokinetics in paediatric patients (< 18 years) have not yet been evaluated. No data are available.
Renal impairment
No clinically relevant changes were observed in the total Cmax and AUC of isavuconazole in subjects with mild, moderate or severe renal impairment compared to subjects with normal renal function. Of the 403 patients who received CRESEMBA in the Phase 3 studies, 79 (20%) of patients had an estimated glomerular filtration rate (GFR) less than 60 mL/min/1.73 m2. No dose adjustment is required in patients with renal impairment, including those patients with end-stage renal disease. Isavuconazole is not readily dialysable (see section 4.2).
Hepatic impairment
After a single 100 mg dose of isavuconazole was administered to 32 patients with mild (Child-Pugh Class A) hepatic insufficiency and 32 patients with moderate (Child-Pugh Class B) hepatic insufficiency (16 intravenous and 16 oral patients per Child-Pugh class), the least square mean systemic exposure (AUC) increased 64% in the Child-Pugh Class A group, and 84% in the Child-Pugh Class B group, relative to 32 age- and weight-matched healthy subjects with normal hepatic function. Mean plasma concentrations (Cmax) were 2% lower in the Child-Pugh Class A group and 30% lower in the Child-Pugh Class B group. The population pharmacokinetic evaluation of isavuconazole in healthy subjects and patients with mild or moderate hepatic dysfunction demonstrated that the mild and moderate hepatic impairment populations had 40% and 48% lower isavuconazole clearance (CL) values, respectively, than the healthy population.
No dose adjustment is required in patients with mild to moderate hepatic impairment.
Cresemba has not been studied in patients with severe hepatic impairment (Child-Pugh Class C). Use in these patients is not recommended unless the potential benefit is considered to outweigh the risks. See sections 4.2 and 4.4.
5.3 Preclinical safety data
In rats and rabbits, isavuconazole at systemic exposures below the therapeutic level were associated with dose-related increases in the incidence of skeletal anomalies (rudimentary supernumerary ribs) in offspring. In rats, a dose-related increase in the incidence of zygomatic arch fusion was also noted in offspring (see section 4.6).
Administration of isavuconazonium sulfate to rats at a dose of 90 mg/kg/day (2.3-fold the human maintenance dose [200 mg] based on mg/m2/day) during pregnancy through the weaning period showed an increased perinatal mortality of the pups. In utero exposure to the active moiety isavuconazole had no effect on the fertility of the surviving pups.
Intravenous administration of 14C-labelled isavuconazonium sulfate to lactating rats resulted in the recovery of radiolabel in the milk.
Isavuconazole did not affect the fertility of male or female rats treated with oral doses up to 90 mg/kg/day (2.3-fold the clinical maintenance dose based on mg/m2/day comparisons).
Isavuconazole has no discernible mutagenic or genotoxic potential. Isavuconazole was negative in a bacterial reverse mutation assay, was weakly clastogenic at cytotoxic concentrations in the L5178Y tk+/- mouse lymphoma chromosome aberration assay, and showed no biologically relevant or statistically significant increase in the frequency of micronuclei in an in vivo rat micronucleus test.
No carcinogenicity studies have been performed.
Isavuconazole inhibited the hERG potassium channel and the L-type calcium channel with an IC50 of 5.82 µM and 6.57 µM respectively (34- and 38-fold the human non-protein bound Cmax at maximum recommended human dose [MRHD], respectively).The in vivo 39-week repeated-dose toxicology studies in monkeys did not show QTcF prolongation at doses up to 40 mg/kg/day (2.1-fold the recommended clinical maintenance dose, based on mg/m2/day comparisons).
6. Pharmaceutical particulars
6.1 List of excipients
Mannitol
Sulfuric acid (for pH-adjustment)
6.2 Incompatibilities
In the absence of compatibility studies, this medicinal product must not be mixed with other medicinal products except those mentioned in section 6.6.
6.3 Shelf life
24 months
Chemical and physical in-use stability after reconstitution and dilution has been demonstrated for 24 hours at 2 °C to 8 °C, or 6 hours at room temperature.
From a microbiological point of view, the product should be used immediately. If not used immediately, in-use storage times and conditions prior to use are the responsibility of the user and would normally not be longer than 24 hours at 2 °C to 8 °C, unless reconstitution and dilution has taken place in controlled and validated aseptic conditions.
6.4 Special precautions for storage
Store in a refrigerator (2 °C to 8 °C).
For storage conditions after reconstitution and dilution of the medicinal product, see section 6.3.
6.5 Nature and contents of container
One 10 mL Type I glass vial with rubber stopper and an aluminum cap with plastic seal.
6.6 Special precautions for disposal and other handling
Reconstitution
One vial of the powder for concentrate for solution for infusion should be reconstituted by addition of 5 mL water for injections to the vial. The vial should be shaken to dissolve the powder completely. The reconstituted solution should be inspected visually for particulate matter and discoloration. Reconstituted concentrate should be clear and free of visible particulate. It must be further diluted prior to administration.
Dilution and administration
After reconstitution, the entire content of the reconstituted concentrate should be removed from the vial and added to an infusion bag containing at least 250 mL of either sodium chloride 9 mg/mL (0.9%) solution for injection or 50 mg/mL (5%) dextrose solution. The infusion solution contains approximately 1.5 mg/mL isavuconazonium sulfate (corresponding to approximately 0.8 mg isavuconazole per mL). After the reconstituted concentrate is further diluted, the diluted solution may show fine white-to-translucent particulates of isavuconazole, that do not sediment (but will be removed by in-line filtration). The diluted solution should be mixed gently, or the bag should be rolled to minimise the formation of particulates. Unnecessary vibration or vigorous shaking of the solution should be avoided. The solution for infusion must be administered via an infusion set with an in-line filter (pore size 0.2 μm to 1.2 μm) made of polyether sulfone (PES).
Isavuconazole should not be infused into the same line or cannula concomitantly with other intraveneous products.
Storage conditions after reconstitution and dilution are provided in section 6.3.
If possible, the intravenous administration of isavuconazole should be completed within 6 hours after reconstitution and dilution at room temperature. If this is not possible, the infusion solution should be immediately refrigerated after dilution, and infusion should be completed within 24 hours. Further information regarding the storage conditions after reconstitution and dilution of the medicinal product is provided in section 6.3.
An existing intravenous line should be flushed with sodium chloride 9 mg/mL (0.9%) solution for injection or 50 mg/mL (5%) dextrose solution.
This medicinal product is for single use only. Discard partially-used vials.
Any unused medicinal product or waste material should be disposed of in accordance with local requirements.
7. Marketing authorisation holder
Basilea Medical Ltd (c/o Cox Costello & Horne Limited)
Langwood House
63–81 High Street
Rickmansworth
Hertfordshire WD3 1EQ
United Kingdom
8. Marketing authorisation number(s)
EU/1/15/1036/001
9. Date of first authorisation/renewal of the authorisation
1 December 2015
10. Date of revision of the text
Detailed information on this medicinal product is available on the website of the European Medicines Agency http://www.ema.europa.eu.

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