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Prevention of Acute Respiratory Infection in Taiwanese Institutionalized Elderly

30 giugno 2022 aggiornato da: 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.

Panoramica dello studio

Stato

Ritirato

Intervento / Trattamento

Descrizione dettagliata

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.

Tipo di studio

Interventistico

Fase

  • Fase 2
  • Fase 3

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Da 55 anni a 85 anni (Adulto, Adulto più anziano)

Accetta volontari sani

Sessi ammissibili allo studio

Tutto

Descrizione

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

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Prevenzione
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Triplicare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: 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.
0,1 mL di vaccino BCG ricostituito somministrato per via intradermica al basale.
Comparatore placebo: 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

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
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
Lasso di tempo: 6 months
Number of hospitalizations for acute respiratory infection as defined by list of ICD codes
6 months

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
To measure the impact of one-time BCG vaccination compared to placebo in reducing the occurrence of medically attended acute respiratory infection
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 6 months
Number of changes in antibody profiles between enrollment and follow-up
6 months

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Collaboratori

Investigatori

  • Investigatore principale: Megan Murray, ScD, Harvard Medical School (HMS and HSDM)

Pubblicazioni e link utili

La persona responsabile dell'inserimento delle informazioni sullo studio fornisce volontariamente queste pubblicazioni. Questi possono riguardare qualsiasi cosa relativa allo studio.

Pubblicazioni generali

Collegamenti utili

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Anticipato)

1 maggio 2022

Completamento primario (Anticipato)

1 luglio 2022

Completamento dello studio (Anticipato)

1 settembre 2022

Date di iscrizione allo studio

Primo inviato

28 maggio 2021

Primo inviato che soddisfa i criteri di controllo qualità

23 giugno 2021

Primo Inserito (Effettivo)

24 giugno 2021

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

6 luglio 2022

Ultimo aggiornamento inviato che soddisfa i criteri QC

30 giugno 2022

Ultimo verificato

1 giugno 2022

Maggiori informazioni

Termini relativi a questo studio

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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