DELTYBA 50mg Filmtabletten-Filmtabletten-OTSUKA NOVEL PRODUCTS GMBH-40St  


1. Name of the medicinal product
Deltyba 50mg film-coated tablets
2. Qualitative and quantitative composition
Each film-coated tablet contains 50 mg delamanid.
Excipient with known effect: each film-coated tablet contains 100 mg lactose (as monohydrate).
For the full list of excipients, see section 6.1.
3. Pharmaceutical form
Film-coated tablet (tablet).
Round, yellow, film-coated tablet.
4. Clinical particulars
4.1 Therapeutic indications
Deltyba is indicated for use as part of an appropriate combination regimen for pulmonary multi-drug resistant tuberculosis (MDR-TB) in adult patients when an effective treatment regimen cannot otherwise be composed for reasons of resistance or tolerability (see sections 4.2, 4.4 and 5.1).
Consideration should be given to official guidance on the appropriate use of antibacterial agents.
4.2 Posology and method of administration
Treatment with delamanid should be initiated and monitored by a physician experienced in the management of multidrug-resistant Mycobacterium tuberculosis.
Delamanid must always be administered as part of an appropriate combination regimen for the treatment of multidrug-resistant tuberculosis (MDR-TB) (see sections 4.4 and 5.1). Treatment with an appropriate combination regimen should continue after completion of the 24-week delamanid treatment period according to WHO guidelines.
It is recommended that delamanid is administered by directly observed therapy (DOT).
Posology
The recommended dose for adults is 100 mg twice daily for 24 weeks.
Elderly patients (> 65 years of age)
No data are available in the elderly.
Renal impairment
No dose adjustment is considered necessary in patients with mild or moderate renal impairment. There are no data on the use of delamanid in patients with severe renal impairment and its use is not recommended (see sections 4.4 and 5.2).
Hepatic impairment
No dose adjustment is considered necessary in patients with mild hepatic impairment. Delamanid is not recommended in patients with moderate to severe hepatic impairment (see sections 4.4 and 5.2).
Paediatric population
The safety and efficacy of delamanid in children and adolescents below 18 years has not yet been established.
No data are available.
Method of administration
For oral use.
Delamanid should be taken with food.
4.3 Contraindications
- Hypersensitivity to the active substance or to any of the excipients listed in section 6.1.
- Serum albumin < 2.8 g/dL (see section 4.4 regarding use in patients with serum albumin ≥2.8 g/dL)
- Taking medicinal products that are strong inducers of CYP3A (e.g. carbamazepine).
4.4 Special warnings and precautions for use
There are no data on treatment with delamanid for more than 24 consecutive weeks.
There are no clinical data on the use of delamanid to treat
- extra pulmonary tuberculosis (e.g. central nervous system, bone)
- infections due to Mycobacterial species other than those of the M. tuberculosis complex
- latent infection with M. tuberculosis
There are no clinical data on the use of delamanid as part of combination regimens used to treat drug-susceptible M. tuberculosis.
Delamanid must only be used in an appropriate combination regimen for MDR-TB treatment as recommended by WHO to prevent development of resistance to delamanid.
Resistance to delamanid has occurred during treatment. The risk of selecting for resistance to delamanid appears to be increased when it is used with few agents predicted to be active and/or when these additional agents were not among those deemed to be most effective against M. tuberculosis. In addition, limited clinical data indicate that the addition of delamanid to regimens for treating MDR-TB that were resistant to rifampicin and isoniazid but otherwise susceptible, gave the highest efficacy whereas use of delamanid as part of the best available regimens that could be constructed for treating XDR-TB was associated with the lowest efficacy.
QT prolongation
QT prolongation has been observed in patients treated with delamanid. This prolongation increases slowly over time in the first 6-10 weeks of treatment and remains stable therafter. QTc prolongation is very closely correlated with the major delamanid metabolite DM-6705. Plasma albumin and CYP3A regulate the formation and metabolism of DM-6705 respectively (see Special Considerations below).
Magnitude of QT interval prolongation effect
In a placebo controlled study in MDR-TB patients receiving 100 mg delamanid twice daily the mean placebo corrected increases in QTcF from baseline were 7.6 ms at 1 month and 12.1 ms at 2 months. 3% of patients experienced an increase of 60 ms or greater at some point during the trial and 1 patient exhibited a QTcF interval > 500 ms (see section 4.8). No cases of Torsades de Pointes or temporally related events suggestive of proarrhythmias occurred.
General recommendations
It is recommended that electrocardiograms (ECG) should be obtained before initiation of treatment and monthly during the full course of treatment with delamanid. If a QTcF >500 ms is observed either before the first dose of delamanid or during delamanid treatment, treatment with delamanid should either not be started or should be discontinued. If the QTc interval duration exceeds 450/470 ms for male/female patients during delamanid treatment, these patients should be administered more frequent ECG monitoring. It is also recommended that serum electrolytes, e.g. potassium, are obtained at baseline and corrected if abnormal.
Special Considerations
Cardiac risk factors
Treatment with delamanid should not be initiated in patients with the following risk factors unless the possible benefit of delamanid is considerd to outweigh the potential risks. Such patients should receive very frequent monitoring of ECG throughout the full delamanid treatment period.
-Known congenital prolongation of the QTc-interval or any clinical condition known to prolong the QTc interval or QTc > 500 ms.
-History of symptomatic cardiac arrhythmias or with clinically relevant bradycardia.
-Any predisposing cardiac conditions for arrhythmia such as severe hypertension, left ventricular hypertrophy (including hypertrophic cardiomyopathy) or congestive cardiac failure accompanied by reduced left ventricle ejection fraction.
-Electrolyte disturbances, particularly hypokalaemia, hypocalcaemia or hypomagnesaemia.
-Taking medicinal products that are known to prolong the QTc interval. These include (but are not limited to):
-Antiarrhythmics (e.g. amiodarone, disopyramide, dofetilide, ibutilide, procainamide, quinidine, hydroquinidine, sotalol).
-Neuroleptics (e.g. phenothiazines, sertindole, sultopride, chlorpromazine, haloperidol, mesoridazine, pimozide, or thioridazine), antidepressive agents.
-Certain antimicrobial agents, including:
-macrolides (e.g. erythromycin, clarithromycin)
-moxifloxacin, sparfloxacin (see section 4.4 regarding use with other fluoroquinolones)
-triazole antifungal agents
-pentamidine
-saquinavir
-Certain non-sedating antihistamines (e.g. terfenadine, astemizole, mizolastine).
-Cisapride, droperidol, domperidone, bepridil, diphemanil, probucol, levomethadyl, methadone, vinca alkaloids, arsenic trioxide.
Hypoalbuminaemia
In a clinical study, the presence of hypoalbuminaemia was associated with an increased risk of prolongation of the QTc interval in delamanid treated patients. Delamanid is contraindicated in patients with albumin <2.8 g/dL (see section 4.3). Patients who commence delamanid with serum albumin <3.4 g/dL or experience a fall in serum albumin into this range during treatment should receive very frequent monitoring of ECGs throughout the full delamanid treatment period.
Co-administration with strong inhibitors of CYP3A
Co-administration of delamanid with a strong inhibitor of CYP3A (lopinavir/ritonavir) was associated with a 30% higher exposure to the metabolite DM-6705, which has been associated with QTc prolongation. Therefore if co-administration of delamanid with any strong inhibitor of CYP3A is considered necessary it is recommended that there is very frequent monitoring of ECGs, throughout the full delamanid treatment period.
Co-administration of delamanid with quinolones
All QTcF prolongations above 60 ms were associated with concomitant fluoroquinolone use. Therefore if co-administration is considered to be unavoidable in order to construct an adequate treatment regimen for MDR-TB it is recommended that there is very frequent monitoring of ECGs throughout the full delamanid treatment period.
Hepatic impairment
Deltyba is not recommended in patients with moderate to severe hepatic impairment (see sections 4.2 and 5.2).
HIV-infected patients
There is no experience of the use of delamanid in patients receiving concomitant therapy against HIV (see section 4.5).
Limitation of data on the efficacy of delamanid
Current evidence is derived from one randomised controlled trial of 2 months duration and an open extension trial of 6 month duration in addition to long-term outcome collected after end of MDR-TB treatment (see section 5.1).
Biotransformation and elimination
The complete metabolic profile of delamanid in man has not yet been fully elucidated (see sections 4.5 and 5.2). Therefore the potential for drug-drug interactions of clinical significance to occur with delamanid and the possible consequences, including the total effect on the QTc interval, cannot be predicted with confidence.
Excipients
Deltyba film-coated tablets contain 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
The complete metabolic profile and mode of elimination of delamanid has not yet been fully elucidated (see sections 4.4 and 5.2)
Effects of other medicinal products on Deltyba
Cytochrome P450 3A4 inducers
Clinical drug-drug interactions studies in healthy subjects indicated a reduced exposure to delamanid, of up to 45% following 15 days of concomitant administration of the strong inducer of cytochrome P450 (CYP) 3A4 (Rifampicin 300 mg daily) with delamanid (200 mg daily). No clinically relevant reduction in delamanid exposure was observed with the weak inducer efavirenz when administered at a dose of 600 mg daily for 10 days in combination with delamanid 100 mg twice daily.
Anti-HIV medicines
In clinical drug-drug interaction studies in healthy subjects, delamanid was administered alone (100 mg twice daily) and with tenofovir (300 mg daily) or lopinavir/ritonavir (400/100 mg daily) for 14 days and with efavirenz for 10 days (600 mg daily). Delamanid exposure remained unchanged (<25% difference) with anti-HIV medicines tenofovir and efavirenz but was slightly increased with the combination anti-HIV medicine containing lopinavir/ritonavir.
Effects of Deltyba on other medicinal products
In-vitro studies showed that delamanid did not inhibit CYP450 isozymes.
In-vitro studies showed that delamanid and metabolites did not have any effect on the transporters MDR1(p-gp), BCRP, OATP1, OATP3, OCT1, OCT2, OATP1B1, OATP1B3 and BSEP, at concentrations of approximately 5 to 20 fold greater than the Cmax at steady state. However, since the concentrations in the gut can potentially be much greater than these multiples of the Cmax, there is a potential for delamanid to have an effect on these transporters.
Anti-Tuberculosis medicines
In a clinical drug-drug interaction study in healthy subjects, delamanid was administred alone (200 mg daily) and with rifampicin/isoniazid/pyrazinamide (300/720/1800 mg daily) or ethambutol (1100 mg daily) for 15 days. Exposure of concomitant anti-TB drugs (rifampicin [R]/ isoniazid [H]/ pyrazinamide [Z]) was not affected. Co-administration with delamanid significantly increased steady state plasma concentrations of ethambutol by approximately 25%, the clinical relevance is unknown.
Anti-HIV medicines
In a clinical drug-drug interaction study in healthy subjects, delamanid was administred alone (100 mg twice daily) and tenofovir (300 mg), lopinavir/ritonavir (400/100 mg) for 14 days and with efavirenz for 10 days (600 mg daily). Delamanid given in combination with the anti-HIV-medicines, tenofovir, lopinavir/ritonavir and efavirenz, did not affect the exposure to these medicinal products.
Medicinal products with the potential to prolong QTc
Care must be taken in using delamanid in patients already receiving medicines associated with QT prolongation (see section 4.4). Co-administration of moxifloxacin and delamanid in MDR-TB patients has not been studied. Moxifloxacin is not recommended for use in patients treated with delamanid
4.6 Fertility, pregnancy and lactation
Pregnancy
There are very limited data from the use of delamanid in pregnant women. Studies in animals have shown reproductive toxicity (see section 5.3).
Deltyba is not recommended in pregnant women or in women of childbearing potential unless they are using a reliable form of contraception.
Breast-feeding
It is unknown whether this medicinal product or its metabolites are excreted in human milk. Available pharmacokinetic data in animals have shown excretion of delamanid and/or its metabolites in milk. Because a potential risk to the breast-feeding infant cannot be ruled out , it is recommended that women should not breastfeed during treatment with Deltyba.
Fertility
Deltyba had no effect on male or female fertility in animals (see section 5.3). There are no clinical data on the effects of delamanid on fertility in humans.
4.7 Effects on ability to drive and use machines
No studies on the effects on the ability to drive and use machines have been performed. However, patients should be advised not to drive or use machines if they experience any adverse reaction with a potential impact on the ability to perform these activities (e.g. headache and tremor are very common).
4.8 Undesirable effects
Summary of the safety profile
The frequency of the adverse drug reactions described below is based on data of one double blind controlled clinical trial involving 481 patients with MDR-TB, in which 321 patients received delamanid in combination with an Optimised Background Regimen (OBR). Due to the limited size of this dataset it is currently not possible to clearly differentiate between OBR therapy and delamanid as cause for the adverse reactions mentioned below.
Electrocardiogram QTc interval prolongation has been identified as the most prominent safety concern of treatment with delamanid (see also section 4.4). A major factor contributing to QTc interval prolongation is hypoalbuminaemia (particularly below 2.8 g/dl). Other important adverse drug reactions are anxiety, paraesthesia, and tremor.
The most frequently observed adverse drug reactions in patients treated with delamanid (i.e. incidence > 10%) are nausea (38.3%), vomiting (33%), and dizziness (30.2%).
Tabulated list of adverse reactions
The adverse reactions listed in the table below were reported in at least one of the 321 patients receiving delamanid in the double blind placebo controlled clinical trial mentioned above. The adverse drug reactions are listed by MedDRA System Organ Class and Preferred Term. Within each System Organ Class, adverse reactions are listed under frequency categories of 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), very rare (<1/10,000) and not known (cannot be estimated from the available data). Within each frequency grouping, adverse reactions are presented in order of decreasing seriousness.
Table: Adverse drug reactions to delamanid
 

* The frequency for these events was lower for the combined delamanid plus OBR group in comparison to the placebo plus OBR group.
Description of selected adverse reactions
ECG QT interval prolongation
Electrocardiogram QT prolonged was reported in 9.9% of patients receiving delamanid as 100 mg twice daily (frequency category common) compared to 3.8% of patients receiving placebo + OBR. This ADR was not accompanied by clinical symptoms. The incidence of a QTcF interval >500 msec was uncommon and observed in one patient (1/321 patients). There were no accompanying clinical symptoms and the event resolved. A total of 12/321 patients in the total delamanid twice daily + OBR group had a change in QTcF of >60 ms versus 0% on placebo + OBR. The presence of hypoalbuminaemia was associated with an increased risk of prolongation of the QTc interval (see section 4.4). QTc interval prolongation has been identified as the most prominent safety concern of treatment with delamanid. This results in the contraindication described in section 4.3 and in the warnings in section 4.4. Major factors contributing to QTc interval prolongation are hypoalbuminaemia (particularly below 2.8 g/dL) and hypokalaemia. Therefore very frequent monitoring of albumin levels, serum electrolytes and ECG is recommended.
Palpitations
For patients receiving 100 mg delamanid + OBR twice daily, the frequency was 8.1% (frequency category common) in comparison to a frequency of 6.3% in patients receiving placebo + OBR twice daily.
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 Yellow Card Scheme, Website: www.mhra.gov.uk/yellowcard.
4.9 Overdose
No cases of delamanid overdose have been observed in clinical trials. However, additional clinical data showed that in patients receiving 200 mg twice daily, i.e. total 400 mg delamanid per day, the overall safety profile is comparable to that in patients receiving the recommended dose of 100 mg twice daily. Albeit, some reactions were observed at a higher frequency and the rate of QT prolongation increased in a dose-related manner. Treatment of overdose should involve immediate measures to remove delamanid from the gastrointestinal tract and supportive care as required. Frequent ECG monitoring should be performed.
5. Pharmacological properties
5.1 Pharmacodynamic properties
Pharmacotherapeutic group: Antimycobacterials, antibiotics, ATC code: J04AK06.
Mode of action
The pharmacological mode of action of delamanid involves inhibition of the synthesis of the mycobacterial cell wall components, methoxy-mycolic and keto-mycolic acid. The identified metabolites of delamanid do not show anti-mycobacterial activity.
Activity against specific pathogens
Delamanid has no in vitro activity against bacterial species other than mycobacteria.
Resistance
Mutation in one of the 5 coenzyme F420 genes is suggested as the mechanism for resistance against delamanid in mycobacteria. In mycobacteria, the in vitro frequencies of spontaneous resistance to delamanid were similar to those for isoniazid, and were higher than those for rifampicin. Resistance to delamanid has been documented to occur during treatment (see section 4.4). Delamanid does not show cross-resistance with any of the currently used anti-tuberculosis drugs.
Susceptibility testing breakpoints
A clinical breakpoint for delamanid has not yet been determined. In clinical trials resistance to delamanid has been defined as any growth in the presence of a delamanid concentration of 0.2 μg/mL that is greater than 1% of that on drug-free control cultures on Middlebrook 7H11 medium.
Data from clinical studies
In a single, double blind, placebo controlled study, 161 MDR-TB patients received 8 weeks treatment with delamanid 100 mg twice daily in combination with WHO recommended individualised OBR. Two-month sputum conversion (SCC) (i.e. growth of Mycobacterium tuberculosis to no growth over the first 2 months) observed among those patients who were sputum culture positive at baseline is tabulated below for the delamanid plus OBR and placebo plus OBR treatment groups:

 

MGIT® Mycobacterium growth indicator tube liquid media system
n= subjects with SCC at 2 months
Paediatric population
The European Medicines Agency has deferred the obligation to submit the results of studies with Deltyba in one or more subsets of the paediatric population in {treatment in multi-drug resistant tuberculosis} (see section 4.2 for information on paediatric use).
This medicinal product has been authorised under a so-called 'conditional approval' scheme. This means that further evidence on this medicinal product is awaited.
The European Medicines Agency will review new information on this medicinal product at least every year and this SmPC will be updated as necessary.
5.2 Pharmacokinetic properties
Absorption
Oral bioavailability of delamanid improves when administered with a standard meal, by about 2.7 fold compared to fasting conditions. Delamanid plasma exposure increases less than proportionally with increasing dose.
Distribution
Delamanid highly binds to all plasma proteins with a binding to total proteins of ≥99.5%. Delamanid has a large apparent volume of distribution (Vz/F of 2,100 L).
Biotransformation
Delamanid is primarily metabolised in plasma by albumin and to a lesser extent by CYP3A4. The complete metabolic profile of delamanid has not yet been elucidated, and there is a potential for drug interactions with other co-administered medications, if significant unknown metabolites are discovered. The identified metabolites do not show anti-mycobacterial activity but some contribute to QTc prolongation, mainly DM-6705. Concentrations of the identified metabolites progressively increase to steady state after 6 to 10 weeks.
Elimination
Delamanid disappears from plasma with a t1/2 of 30-38 hours. Delamanid is not excreted in urine.
Special populations
Paediatric population
No studies have been performed in paediatric patients.
Patients with renal impairment
Less than 5% of an oral dose of delamanid is recovered from urine. Mild renal impairment (50 mL/min < CrCLN < 80 mL/min) does not appear to affect delamanid exposure. Therefore no dose adjustment is needed for patients with mild or moderate renal impairment. It is not known whether delamanid and metabolites will be significantly removed by haemodialysis or peritoneal dialysis.
Patients with hepatic impairment
No dose adjustment is considered necessary for patients with mild hepatic impairment. Delamanid is not recommended in patients with moderate to severe hepatic impairment.
Elderly patients (≥ 65 years)
No patients of ≥ 65 years of age were included in clinical trials.
5.3 Preclinical safety data
Non-clinical data reveal no specific hazard for humans based on conventional studies for genotoxicity and carcinogenic potential. Delamanid and/or its metabolites have the potential to affect cardiac repolarisation via blockade of hERG potassium channels. In the dog, foamy macrophages were observed in lymphoid tissue of various organs during repeat-dose toxicity studies. The finding was shown to be partially reversible; the clinical relevance of this finding is unknown. Repeat-dose toxicity studies in rabbits revealed an inhibitory effect of delamanid and/or its metabolites on vitamin K-dependent blood clotting. In rabbits reproductive studies, embryo-fetal toxicity was observed at maternally toxic dosages. Pharmacokinetic data in animals have shown excretion of delamanid /metabolites into breast milk. In lactating rats, the Cmax for delamanid in breast milk was 4-fold higher than that of the blood.
6. Pharmaceutical particulars
6.1 List of excipients
Tablet core
Hypromellose phthalate
Povidone
all-rac-α-Tocopherol
Cellulose, microcrystalline
Sodium starch glycolate (type A)
Carmellose calcium
Silica, colloidal hydrated
Magnesium stearate
Lactose monohydrate
Film coating
Hypromellose
Macrogol 8000
Titanium dioxide
Talc
Iron oxide yellow (E172)
6.2 Incompatibilities
Not applicable
6.3 Shelf life
4 years
6.4 Special precautions for storage
Store in the original package in order to protect from moisture.
6.5 Nature and contents of container
Aluminium/Aluminium blister:
40 tablets.
48 tablets.
Amber glass bottle (type III) with polypropylene child resistant closure, polyester insert and desiccant canister(s):
50 or 300 tablets.
Not all pack sizes may be marketed.
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
Otsuka Novel Products GmbH
Erika-Mann-Straße 21
80636 München
Germany
8. Marketing authorisation number(s)
EU/1/13/875/001-004
9. Date of first authorisation/renewal of the authorisation
Date of first authorisation: 28 April 2014
10. Date of revision of the text
07/2014
Detailed information on this medicinal product is available on the website of the European Medicines Agency http://www.ema.europa.eu.
大冢研发的用于治疗耐多药结核病（MDR-TB）新药首次获得上市许可。
Deltyba成为MDR-TB治疗的一个新选择。据世界卫生组织报告，全球MDR-TB患者的治疗成功率仅为50%，每年17万人死于MDR-TB。
结核病是大冢研究所于1971年由当时的社长大冢明彦创立时确定的首批研究领域之一。目前，大冢是世界上抗结核药物开发领域的最大出资者。
2014年5月2日,日本东京--(BUSINESS WIRE)-- (美国商业资讯)--大冢制药株式会社（大冢）今天宣布，Deltyba™（delamanid）已获得欧盟委员会的上市批准，在因耐药或耐受性原因而无法组成有效治疗方案的情况下，该药可作为适当联合治疗方案的一部分，用于成人耐多药肺结核病（MDR-TB）患者的治疗。3
Deltyba是一种杀菌药，具有新型的作用机制，可干扰结核分枝杆菌（MTB）细胞壁的新陈代谢。该药在体外对各类MTB菌株均具有很高的杀菌活性，包括耐一线抗结核药（例如异烟肼和利福平）的菌株。
Deltyba于2008年被认定为孤儿药，这意味着该药是一种用于治疗罕见病的药物。来自9个国家的临床试验结果显示，在接受Deltyba（100毫克，每日2次）联合一个优化的背景方案（OBR）治疗2个月的受试患者中，痰培养转阴（SCC）的比例（45.4%）显著高于接受安慰剂联合一个OBR治疗的患者的SCC比例（29.6%），两者间差异具有统计学意义。SCC是判定患者不再具有传染性的指标。
大冢明彦会长表示：“我很高兴大冢制药开发的新药已经能够在欧洲用于MDR-TB患者的治疗。目前，欧洲的MDR-TB问题很严重。半个世纪前，当利福平问世时，全球的结核病问题似乎就此终结了。然而，我却专门将结核病选定为我们公司的研究课题。我知道必须有人来从事这项研究，因为结核病在亚洲仍是一个重大的公共卫生问题。”
导致对抗结核药产生耐药的原因很多，包括药物使用不当或患者管理不当，例如因潜在药物不良反应而导致患者未完成疗程。MDR-TB的出现已成为全球关注的焦点。由于MDR-TB患者的治疗时间长达至少20个月，这给患者对治疗方案的依从性带来极大困难。从全球来看，仅采用现有抗结核药物治疗MDR-TB患者，其治疗成功率不足50%，这已构成了非常紧迫的未满足的医疗需求。
荷兰格罗宁根大学医学中心的MDR-TB专家Wiel de Lange博士说：“结核病领域对治疗MDR-TB的新药期待已久。随着对现有药物耐药率的不断攀升，全球仅有不足一半的MDR-TB患者得到成功的治疗，Deltyba无疑是一个令人期盼的新选择。”
大冢制药社长岩本太郎评论道：“我非常高兴Deltyba作为一种新型的抗结核药获得欧洲上市许可，这是我们研究所创立以来的一个梦想。全世界仍有众多罹患MDR-TB的患者。我希望Deltyba能够为改善结核病治疗做出贡献。”
为确保患者将来能够持久地受益于Deltyba，大冢已投资制定了负有责任的药物使用计划（Responsible Access Programme ，RAP），以帮助防范对该药可能产生的耐药。RAP包含严格的分销控制、有关Deltyba与其他MDR-TB药物合理配伍使用的专业医学教育，以及一个用于追踪使用Deltyba安全性和有效性的全方位的患者登记管理。大冢坚持致力于为服务需求尚未获满足的群体提供Deltyba，并将在耐多药结核病高负担国家和已开展临床试验的国家申请上市许可。
关于Deltyba
Deltyba适用于成人耐多药肺结核病（MDR-TB）患者，在因耐药或耐受性原因而无法对其组成有效治疗方案的情况下，该药可用作适当联合药物治疗方案的组成部分。成人推荐剂量为100毫克，每日2次，疗程24周。3 临床试验结果显示，在接受Deltyba（100毫克，每日2次）联合一个OBR治疗2个月的受试患者中，45.4%的患者实现了痰培养转阴（SCC），该指标表明患者不再有传染性；相比之下，在接受安慰剂联合一个OBR治疗的患者中，仅有29.6%的患者实现了SCC，前者比后者高53%，两者间差异有统计学意义。
临床试验结果显示，除QT间期延长以外，Deltyba组的不良事件与安慰剂组接近。心电图显示的QT间期延长在Deltyba（100毫克，每日2次）联合OBR组患者中的发生率为9.9%，而在安慰剂联合OBR组患者中的发生率为3.8%。该不良事件未伴有任何临床症状（例如晕厥或心律不齐）。