PREVAIL VIIIa: リベリアにおけるレトロウイルス感染者における潜在性結核感染スクリーニング法の評価
Background:
Tuberculosis (TB) is a health threat for people living with human immunodeficiency virus (HIV). People living with HIV are more likely than others to develop active TB. Also, TB makes HIV progress faster. TB is a leading cause of death among people in the West African country of Liberia. Researchers want to find an effective testing method for latent tuberculosis infection (LTBI) to help people living with HIV in Liberia.
Objective:
To compare the interferon-gamma release assay (IGRA) and tuberculin skin test (TST) as LTBI screening tests in people living with HIV in Liberia.
Eligibility:
People ages 18 and older who take part in NIH study #19-I-N014 and are scheduled to have or have had IGRA at a Month 12 HONOR study visit.
Design:
Participants will be screened with a medical history and physical exam. Their medical records and HONOR study records will be reviewed.
Participants will have TST. Purified protein derivative will be placed in the skin of their forearm. They will be observed for adverse reactions for 15 minutes. Between 48 and 72 hours after placement, they will have a second study visit to have the TST read. If they miss this time frame, they can return up to 7 days after placement. If they have a positive test result, they will have a chest x-ray. They will have a third study visit to review the results of the chest x-ray. They will be referred for clinical care if needed. They will take a pregnancy test if needed.
Participation will last from 2 days to 6 weeks.
...
調査の概要
詳細な説明
Study Description:
This is a prospective study to compare the interferon-gamma release assay (IGRA) and tuberculin skin test (TST) as latent tuberculosis infection (LTBI) screening tests in people living with HIV in Liberia. Participants will be co-enrolled on the ongoing HONOR (A CoHOrt Clinical, Viral, and ImmuNOlogic Monitoring Study of People Living with Retroviral Infection in Liberia) study. A TST will be administered to eligible participants who are being screened by IGRA on HONOR. Since there is no gold standard for diagnosing LTBI, the results of each method will be compared to evaluate whether there is no difference in the probability of testing positive, assess the operational functionality in the clinic and lab, and determine whether one test can be used with greater sensitivity assuming comparable specificity.
In an extension phase, participants who had a positive TST and/or IGRA result will be offered an opportunity to return for an optional assessment by follow-up chest x-ray, non-contrast chest computed tomography (CT) scanning, sputum collection, and phlebotomy. This will involve an additional visit (Visit 4), to occur after completion of the primary phase (Visit 3). The visit may occur in conjunction with (ie, the same day as or within 4 weeks of) a main HONOR study visit, and results of blood tests collected under the main HONOR study will be reviewed. For participants who have already completed the main HONOR study or do not have an upcoming HONOR visit scheduled, a new visit (ie, HONOR TB Visit 4) will be scheduled for this HONOR TB extension study, and a blood draw will also be performed.
Objectives:
Primary Objective: Assess the sensitivity of the IGRA and TST as LTBI screening tools in people living with HIV in Liberia.
Secondary Objective: Assess the operational functionality of the IGRA and TST in Liberia.
Exploratory Objective: Investigate testing approaches, including follow-up chest x-ray imaging, high-resolution chest CT imaging, and performance on sputum of the Mycobacterium tuberculosis (MTB) complex/rifampin (RIF) nucleic acid amplification test (NAAT), to improve diagnosis of stage-specific TB infection by examining how classification of TB status is associated with biomarker levels (only for participants with a positive TST and/or IGRA).
Endpoints:
Primary Endpoint: Frequency of positive results using the IGRA and TST.
Secondary Endpoint: Proportion of each test type successfully completed and the result determined.
Exploratory Endpoint: Repeat chest x-ray assessment, non-contrast chest CT assessment, sputum analysis by MTB/RIF NAAT assay, and analysis of serum by a CRISPR-Mtb-cfDNA assay.
研究の種類
入学 (実際)
連絡先と場所
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
サンプリング方法
調査対象母集団
Adult participants must be enrolled in the main HONOR study of people living with HIV in Liberia who participated in the HONOR TB study at their Month 12 visit and tested positive on IGRA and/or TST.
説明
- INCLUSION CRITERIA:
In order to be eligible to participate in this study, an individual must meet all of the following criteria:
- Be a participant on the PREVAIL VIII/HONOR study.
- Be at least 18 years of age.
- Be scheduled to undergo or have undergone IGRA at a Month 12 HONOR study visit.
- Ability to return to the clinic 48 to 72 hours after TST placement for reading.
- Ability to provide informed consent.
In order to be eligible to participate in the extension phase of the study, an individual must meet all of the following criteria:
- Participated in the PREVAIL VIIIa HONOR TB study.
- Have had a positive TB test result on the TST and/or IGRA performed as part of the PREVAIL VIII HONOR or PREVAIL VIIIa HONOR TB study(ies).
- Ability to provide informed consent.
EXCLUSION CRITERIA:
An individual who meets any of the following criteria will be excluded from participation in this
study:
- Received BCG vaccine <=10 years prior.
- Known hypersensitivity or allergy to any component of the PPD product.
- Previous severe reaction (e.g., necrosis, blistering, ulcerations, or anaphylactic shock) to a TST.
- Documented active TB or a clear history of treatment for latent infection or active disease.
- Extensive burns or eczema or other skin conditions on the forearms that could affect placement and reading of the TST.
- Pregnant or lactating women.
- Any condition that, in the opinion of the investigator, would compromise the safety of the study participant or staff, or would prevent proper conduct of the study.
An individual who meets any of the following criteria will be excluded from participation in the extension phase of this study:
- Pregnant women.
- Contraindication to CT scanning.
- Any condition that, in the opinion of the investigator, would compromise the safety of the study participant or staff, or would prevent proper conduct of the study.
Exclusion of Special Populations (Children, Adults Who Lack Capacity to Consent, and Pregnant Women)
-We are able to obtain knowledge about TST performance in Liberia without exposing children, adults who lack capacity to consent, and pregnant women to the potential risk of reactions to the TST or exposure to radiation for research purposes.
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
- 観測モデル：COHORT
- 時間の展望：PROSPECTIVE
コホートと介入
グループ/コホート |
|---|
|
HONOR TB participants with positive IGRA and/or TST during initial phase
Adult participants who who tested positive on IGRA and or TST during initial phase and meet the study-specific eligibility criteria. |
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 |
|---|---|---|
|
Frequency of positive results using the IGRA and TST.
時間枠：48-72 hours after TST placement
|
Assess the sensitivity of the IGRA and TST as LTBI screening tools in people living with HIV in Liberia. |
48-72 hours after TST placement
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Proportion of each test type successfully completed and the result determined.
時間枠：48-72 hours after TST placement
|
Assess the operational functionality of the IGRA and TST. |
48-72 hours after TST placement
|
協力者と研究者
捜査官
- 主任研究者：Stephen A Migueles, M.D.、National Institute of Allergy and Infectious Diseases (NIAID)
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
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 (実際)
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
追加の関連 MeSH 用語
その他の研究ID番号
- 10000231
- 000231-I
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
Individual participant data that underline the results reported in this article, after deidentification (text, tables, figures, and appendices).
IPD 共有時間枠
Beginning 9 months and ending 36 months following article publication.
IPD 共有アクセス基準
Investigators whose proposed use of the data has been approved by an independent review committee identified for this purpose. Utilized for individual participant data meta-analysis. Proposals may be submitted up to 36 months following article publication. After 36 months the data will be available in our database but without investigator support.
IPD 共有サポート情報タイプ
- STUDY_PROTOCOL
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
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