Safety and Efficacy of Blocking IL-4 With Pascolizumab in Patients Receiving Standard Therapy for Pulmonary Tuberculosis
Safety and Efficacy of Blocking IL-4 With Pascolizumab in Patients Receiving Standard Combination Therapy for Pulmonary Tuberculosis (TB): a Randomized, Double-blind, Placebo-controlled, Proof-of-concept Clinical Trial
New approaches are needed to achieve more rapid elimination of dormant mycobacteria and thereby shorten treatment for drug-sensitive and drug-resistant tuberculosis (TB). Dormant mycobacteria are relatively resistant to antibacterial drugs and approaches that enhance immune clearance have the potential to be more effective. Interleukin-4 (IL-4) is a key cytokine in the immune response to TB that may impair the clearance of mycobacteria. We hypothesize that pascolizumab, an anti-IL-4 monoclonal antibody, might be of value as an adjunct to standard treatment.
The aims of this trial are to determine whether administration of pascolizumab as an adjunct to standard combination treatment for drug-sensitive TB produces changes in one or more parameters of bacterial or host response (including bacterial clearance, host clinical status, immune response, bacterial and host transcriptomics, lung imaging) that may indicate potential for enhanced sterilization and to confirm the safety of blocking IL-4 (previously demonstrated in healthy volunteers and patients with asthma) in patients with TB.
調査の概要
研究の種類
入学 (実際)
段階
- フェーズ2
連絡先と場所
研究場所
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Singapore、シンガポール
- Changi General Hospital
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Singapore、シンガポール
- National University Hospital, Singapore
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Singapore、シンガポール
- Ng Teng Fong General Hospital
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Manila、フィリピン
- Lung Centre Philippines
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Manila、フィリピン
- Philippines Tuberculosis Society Inc.
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Kuala Lumpur、マレーシア
- University Malaya Medical Centre
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Kuala Lumpur、マレーシア
- Institute of Respiratory Medicine
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Aged 21 -75 years of age
- Male or female: females eligible only if not of childbearing potential or agree to remain abstinent or use an appropriate contraceptive method during the study.
- Confirmed pulmonary TB by smear microscopy and Gene Xpert™
- Absence of rifampicin resistance on molecular probe (Gene Xpert™)
- Estimated to be able to produce at least 5ml of sputum per 24 hour period.
- No previous history of anti-TB therapy for active disease (treatment for latent disease acceptable).
- Willing to comply with the study visits and procedures
- Willing and able to provide written informed consent
Exclusion Criteria:
- More than 28 days of standard anti-TB chemotherapy at the time of randomization.
- Disseminated TB (lymphadenopathy is acceptable)
- Underlying serious chronic diseases such as those of the liver, kidney disease, blood disorders and Type I diabetes (controlled Type II diabetes is acceptable) or any significant organ dysfunction.
- History of myocardial infarction, congestive heart failure or arrhythmia within 6 months of screening
- History or evidence of chronic alcohol consumption or drug abuse
- Current autoimmune disease or history of autoimmune disease.
- Known or suspected hypersensitivity to any component of the trial medication (sodium phosphate, sodium chloride, glycine, sucrose, polysorbate 80)
- Chronic use of an immunosuppressant
- Treatment with any monoclonal antibody within 6 months of randomization
- Vaccination within the 6 weeks prior to randomization (patients who have received influenza vaccination can enroll at 2 weeks following vaccination).
- Seropositive for human immunodeficiency virus-1 or 2; hepatitis B surface antigen (HBsAg) or hepatitis C virus (HCV) antibodies at screening
- Creatinine > 1.4 times upper limit of normal or ALT greater than 2.5 times upper limit of normal on screening blood tests
- QTc >450 msec on ECG performed at screening
- Women who are currently pregnant or breastfeeding
- Any other significant condition that would, in the opinion of the investigator, compromise the patient's safety or outcome in the trial.
- Participation in other clinical intervention trial or research protocol (Participation in other studies that do not involve an intervention may be allowed, but this must be discussed and approved by Chief Investigator )
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
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実験的:Pascolizumab
The dose of study medication will be calculated using the patient's body weight and the appropriate dosing regimen based on the cohort of enrollment.
The medication will be administered by slow intravenous infusion over 1 hour under close medical supervision.
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0.05mg/kg - 10mg/kg Pascolizumab according to dosing cohort
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プラセボコンパレーター:Placebo
For patients randomized to placebo, Sterile 0.9% w/v Sodium Chloride will be used for Injection, using the same volume that would have been prepared if the patient had been randomized to receive pascolizumab.
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Saline (volume determined based on weight of patient, and cohort of enrollment)
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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Efficacy - Time to detection on liquid culture of sputum on Week 8
時間枠:8 weeks post intervention
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8 weeks post intervention
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Co-primary outcome measure - safety
時間枠:Upto 24 weeks via follow-up visits/assessments and 24-96 weeks via phone assessments
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Adverse events considered at least possibly related to study medication and that are classified by the site investigator as serious and/or grade IV severity
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Upto 24 weeks via follow-up visits/assessments and 24-96 weeks via phone assessments
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二次結果の測定
結果測定 |
時間枠 |
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Sputum culture status (positive or negative) on liquid culture at week 8
時間枠:8 weeks
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8 weeks
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Rate of change (area under the curve) from baseline to week 8 in the time to positivity in liquid culture of sputum
時間枠:8 weeks
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8 weeks
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Rate of change in serial sputum colony counts on solid cultures from baseline to week 8
時間枠:8 weeks
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8 weeks
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Rate of change of RPF-dependent serial sputum colony counts from baseline to week 8
時間枠:8 weeks
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8 weeks
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Sputum culture status (positive or negative) on solid culture at week 8
時間枠:8 weeks
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8 weeks
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Rate of change of sputum smear lipid-body positive mycobacteria from baseline to week 8
時間枠:8 weeks
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8 weeks
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Serum IL-4 levels (free and drug-bound)
時間枠:24 weeks
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24 weeks
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Time to resolution of fever
時間枠:24 weeks
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24 weeks
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Time to resolution of all TB symptoms
時間枠:24 weeks
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24 weeks
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Resolution of chest X-ray changes at week 24
時間枠:24 weeks
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24 weeks
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Resolution of PET/MRI changes at week 8 and week 24
時間枠:24 weeks
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24 weeks
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TB relapse at any time up to week 96
時間枠:96 weeks
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96 weeks
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Anti-pascolizumab antibodies
時間枠:24 weeks
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24 weeks
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協力者と研究者
捜査官
- 主任研究者:Nick Paton、National Univesity, Singapore
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (予想される)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
キーワード
その他の研究ID番号
- DSRB 2012/02212
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