Prevention of Acute Respiratory Infection in Taiwanese Institutionalized Elderly
2022年6月30日 更新者：Megan Murray, MD, ScD、Harvard Medical School (HMS and HSDM)
Prevention of Acute Respiratory Infection in Taiwanese Institutionalized Elderly (PARITIE)
The purpose of this study is to assess the efficacy of Bacille Calmette-Guérin (BCG) vaccination compared to placebo against acute respiratory infections in the elderly who are less protected by standard vaccines against influenza than other age groups.
The investigators hypothesize that BCG vaccination can reduce incidence of infection and severity of a range of acute respiratory infections.
Patients who are residents of participating long-term care facilities (LTCFs), who agree to participate in the study, or with a legal guardian who agrees on their behalf, will be randomly assigned to receive BCG vaccination or a placebo.
Participants will be followed for up to six months to assess the incidence of infection and the severity of a range of acute respiratory infections.
調査の概要
詳細な説明
This is a Phase III, double-blind, randomized placebo-controlled trial comparing efficacy of BCG vaccination to that of placebo in reducing severity of a range of acute respiratory infections. Participants will need to meet eligibility criteria in order to be included in the study. Those selected will be asked to provide a blood sample for complete blood count, liver function and renal tests, tests to calculate MELD score, also serological testing.
Participants will be randomized in a 1:1 allocation to receive intradermal administration of BCG vaccination or placebo at baseline. During follow-up, the study team will monitor participants' health status by using intermittent surveys about the presence of adverse events potentially related to vaccination, clinic visits or hospitalization for acute respiratory infection, BioFire® Respiratory 2.1 panel for respiratory pathogens and disease outcome status.
The investigators will screen 980 individuals to enroll 830 participants, resulting in 415 receiving BCG vaccine and 415 receiving placebo. The proposed enrollment sample size is designed to provide 80% power to detect 60% vaccine efficacy (a relative risk of 0.4 among the vaccinated) with 0.05 type-1 error in a two-tailed test, assuming 10% lost to follow-up. The number of individuals screened assumes about 15% will not be eligible to be enrolled after screening.
Objective: To measure the impact of one-time BCG-Japan vaccination on acute respiratory infections leading to hospitalization in the elderly.
Primary Endpoint 1: The cumulative incidence of hospitalization for acute respiratory infection following BCG vaccination compared to that following placebo, starting from 14 days post-vaccination, as defined using relevant ICD-10 codes.
If BCG vaccine is shown to be effective in this age group, it will be of major benefit to both study participants and other elderly individuals at risk for acute respiratory infections and have added protection from disease. Identification of an intervention that can reduce the risk of infection and/or of being hospitalized with ARI would reduce the number of new cases and reducing the number of cases that require hospital admission and vast resources.
研究の種類
介入
段階
- フェーズ2
- フェーズ 3
参加基準
研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。
適格基準
就学可能な年齢
55年～85年 (大人、高齢者)
健康ボランティアの受け入れ
はい
受講資格のある性別
全て
説明
Inclusion Criteria:
- Clients of a long-term care facility
- 55-85 years old
Exclusion Criteria:
- Known previous or current active TB disease
- Exposure to individual with documented active TB within previous three months
- Fever (>37.5 C) within the past 24 hours
Current serious underlying medical conditions:
- HIV+
- Currently taking immunosuppressive or immunomodulatory drugs
- Expect to receive chemotherapy or radiation therapy in the coming six months, receipt of chemotherapy in the past six months or undergoing chemotherapy
- Currently on any anti-cytokine therapy
- History of organ or bone marrow transplantation
- Individual or family history of familial or acquired immune disorder, including auto-immune disorders
- Neutropenia/leukopenia (<500 neutrophils/mm3 or <400 lymphocytes/mm3)
- Chronic kidney disease (Glomerular Filtration Rate< 30 ml/min/1.73m2)
- Elevated liver enzymes (alanine aminotransferase >260 IU/L or aspartate aminotransferase >200 IU/L) or Model for End-Stage Liver Disease (MELD) score ≥30
- Treatment with oral or intravenous steroids at the time of screening, defined as daily doses of 10mg prednisone or equivalent for longer than 3 months.
- Solid or hematologic malignancy including lymphoma, leukemia and other reticuloendothelial system carcinomas within the past two years.
- Presence of Parkinson's disease
- Evidence of dermatitis at site of vaccination
- Living with someone with HIV, immunocompromised, taking immunosuppressive drugs
- Suspicion of active viral or bacterial infection, or taking antivirals or antibiotics
Any vaccine administration two weeks before or after BCG administration. For those who have received the Covid-19 vaccine, the two weeks are considered after the 2nd dose.
- Doctors in Taiwan do not always encourage the use of Covid-19 vaccination due to low incidence of disease and the risk of death due to blood clots in the only approved vaccine for use (AstraZeneca).
- Known allergy to components of the BCG vaccine or prior serious reaction to previous BCG administration
- Plan to leave the long-term care facility within the next three months
- Taking part in any ongoing trial that includes administration of an investigational product relevant to respiratory disease
- Participants with cognitive impairment whose legal guardians cannot be contacted
研究計画
このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。
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：防止
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：トリプル
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
実験的：BCG Vaccine
Participants randomized to the BCG Vaccine Arm will receive the vaccine.
The vaccination site is about halfway down the outer aspect of the upper arm.
|
.1 mL の再構成 BCG ワクチンをベースラインで皮内投与。
|
|
プラセボコンパレーター：Placebo Arm
Placebo will be administered in an intradermal route in the same location as the BCG vaccines': upper arm.
|
.1 mL of diluent (saline) given intradermally at baseline
|
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 |
|---|---|---|
|
To measure the impact of one-time BCG vaccination compared to placebo in reducing the occurrence of acute respiratory infection leading to hospitalization in the elderly in Taiwan
時間枠：6 months
|
Number of hospitalizations for acute respiratory infection as defined by list of ICD codes
|
6 months
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
To measure the impact of one-time BCG vaccination compared to placebo in reducing the occurrence of medically attended acute respiratory infection
時間枠：6 months
|
Number of medically attended acute respiratory infection
|
6 months
|
|
To measure the impact of one-time BCG vaccination compared to placebo on microbiologically confirmed viral respiratory illness
時間枠：6 months
|
Number of microbiologically confirmed viral respiratory illness by viral pathogen as measure by BioFire® Respiratory 2.1 PCR panel
|
6 months
|
|
To measure the impact of one-time BCG vaccination compared to placebo on duration of hospitalization due to acute respiratory infection during the study follow-up period
時間枠：6 months
|
Total duration of days spent hospitalized due to acute respiratory infection during the study follow-up period
|
6 months
|
|
To measure the impact of one-time BCG vaccination compared to placebo on critical admissions during the follow-up period
時間枠：6 months
|
Number of critical are admissions during the follow-up period
|
6 months
|
|
To measure the impact of one-time BCG vaccination compared to placebo on all-cause mortality deaths
時間枠：6 months
|
Number of all-cause mortality deaths
|
6 months
|
|
To measure the impact of one-time BCG vaccination compared to placebo on local and systemic adverse events
時間枠：6 months
|
Number of local and systemic adverse events to BCG vaccination following randomization
|
6 months
|
|
To measure the impact of one-time BCG vaccination compared to placebo on changes of antibody profiles
時間枠：6 months
|
Number of changes in antibody profiles between enrollment and follow-up
|
6 months
|
協力者と研究者
ここでは、この調査に関係する人々や組織を見つけることができます。
捜査官
- 主任研究者：Megan Murray, ScD、Harvard Medical School (HMS and HSDM)
出版物と役立つリンク
研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。
一般刊行物
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便利なリンク
研究記録日
これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。
主要日程の研究
研究開始 (予想される)
2022年5月1日
一次修了 (予想される)
2022年7月1日
研究の完了 (予想される)
2022年9月1日
試験登録日
最初に提出
2021年5月28日
QC基準を満たした最初の提出物
2021年6月23日
最初の投稿 (実際)
2021年6月24日
学習記録の更新
投稿された最後の更新 (実際)
2022年7月6日
QC基準を満たした最後の更新が送信されました
2022年6月30日
最終確認日
2022年6月1日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。