The Role of Epigenetics in Inner City Asthma
The Role of Epigenetics in Inner City Asthma (ICAC-15)
調査の概要
状態
条件
詳細な説明
研究の種類
入学 (実際)
連絡先と場所
研究場所
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Colorado
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Denver、Colorado、アメリカ、80206
- National Jewish Health
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District of Columbia
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Washington、District of Columbia、アメリカ、20010
- Children's National Medical Center
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Massachusetts
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Boston、Massachusetts、アメリカ、02118
- Boston University School of Medicine
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Michigan
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Detroit、Michigan、アメリカ、48202
- Henry Ford Health System
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New York
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New York、New York、アメリカ、10032
- Columbia University Medical Center
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Texas
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Dallas、Texas、アメリカ、75390
- University of Texas Southwestern Medical Center
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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
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
-Black inner city children with or without asthma.
Control Subjects:
-Black males and females ages 6 to 12 years, inclusive, at Recruitment;
- Who do not have a diagnosis of asthma by a physician;
- Who do not have a diagnosis of atopic dermatitis by a physician;
- Who have an FEV1 ≥ 85% predicted;
- With no positive prick skin-tests to any of a panel of indoor and outdoor allergens;
- With no current asthma as determined by the Respiratory Health Questionnaire (RHQ);
- With no current chronic rhinitis/sinusitis as determined by the RHQ;
- Whose primary place of residence is in one of the pre-selected recruitment census tracts that contains at least 15% of households below the U.S. government poverty level;
- Who are able to perform spirometry (according to the Epigenetics Manual of Operations criteria);
- Whose parent or legal guardian is willing to sign the written Informed Consent prior to initiation of any study procedure;
- Who are willing to sign the assent form, if age appropriate.
Asthmatic Participants:
- Black males and females ages 6 to 12 years, inclusive, at Recruitment;
- Who have a diagnosis of asthma by a physician;
- Who are currently receiving long-term asthma control therapy and either have symptoms consistent with persistent asthma (criterion 3a) or have evidence of uncontrolled disease (criterion 3b); or who are not currently receiving long-term asthma control therapy and have symptoms consistent with persistent asthma (criterion 3a) and have evidence of uncontrolled disease (criterion 3b);
Evidence of persistent asthma as defined by the National Asthma Education and Prevention Program (NAEPP) Expert Panel Report 3: Guidelines for the Diagnosis and Management of Asthma (NHLBI 2007), which includes at least one of the following criteria:
- Asthma symptoms 3 or more days per week during the last two weeks;
- Sleep disturbed due to asthma at least 3 times in the past month;
- Albuterol use (Metered Dose Inhaler or nebulizer) for quick relief at least 8 times in the past two weeks, not including use as a preventive for exercise.
Evidence of uncontrolled disease as defined by at least one of the following criteria:
- Two or more asthma-related unscheduled visits to an emergency department (ED), urgent care (UC), or clinic in the previous 6 months;
- One or more asthma-related overnight hospitalizations in the previous 6 months.
With physiologic evidence of reversible airflow obstruction or airway hyperresponsiveness:
- FEV1 < 85% predicted or FEV1/FVC ratio < 0.85 with a bronchodilator response ≥ 10% FEV1;
- Positive methacholine challenge (PC20 < 8 mg/ml) for those individuals who have either:
- Normal airflow (FEV1 ≥ 85% predicted and FEV1/FVC ratio ≥ 0.85);
- Airflow obstruction with a bronchodilator response < 10% FEV1.
- With a positive prick skin-test to at least one of the panel of indoor aeroallergens (i.e. dust mite, cockroach, mold, cat, dog, rat, mouse);
- Whose primary place of residence is in one of the pre-selected recruitment census tracts that contains at least 15% of households below the U.S. government poverty level;
- Who are able to perform spirometry;
- Whose parent or legal guardian is willing to sign the written Informed Consent prior to initiation of any study procedure;
- Who are willing to sign the assent form, if age appropriate.
Exclusion Criteria:
- Who have a sibling already enrolled in the study (i.e. one individual from each family is permitted to participate [case or control], though samples will be collected from parents and siblings);
- Who have received systemic prednisone (or equivalent) during the 30 days prior to the screening visit;
- Who have received systemic prednisone (or equivalent) for > 15 days out of the past 60 days prior to the screening visit;
- Who are pregnant or lactating;
- With acute sinusitis, chest infection, or ear infection that required treatment with antibiotics within 30 days of the screening visit;
- Who are currently participating in another asthma-related pharmaceutical study or intervention study or who have participated in another asthma-related pharmaceutical study or intervention study in the month prior to the screening visit;
- Who are currently receiving or have received hyposensitization therapy to any allergen in the past year prior to the screening visit;
- Who have the presence of the following chronic medical conditions: cardiac condition requiring daily medication, seizure disorder requiring daily medication, obvious severe mental retardation that prohibits the subject from answering questions or following instructions, cystic fibrosis, immune deficiency, diabetes, allergic bronchopulmonary aspergillosis, or any other chronic medical condition at the discretion of the study physician. (Exceptions: Attention deficit disorder with or without hyperactivity; iron deficiency anemia; gastroesophageal reflux disease; otitis media (ear infections); sinusitis; allergic rhinitis);
- Who do not speak and understand English;
- Whose caretaker does not speak and understand English.
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
コホートと介入
グループ/コホート |
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Black inner city children with persistent asthma
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Black inner city non-atopic healthy children
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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 |
時間枠 |
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Global DNA methylation patterns in PBMCs isolated from the persistent asthmatics and non-atopic healthy controls
時間枠:24 months
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24 months
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二次結果の測定
結果測定 |
時間枠 |
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Global DNA methylation patterns in nasal epithelial cells
時間枠:24 months
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24 months
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DNA methylation patterns in PBMCs isolated from the parent(s) and/or siblings
時間枠:24 months
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24 months
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Gene expression profiles of RNA extracted from PBMCs and nasal epithelial cells of the persistent asthmatics and non-atopic healthy controls
時間枠:24 months
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24 months
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協力者と研究者
捜査官
- スタディチェア:David Schwartz, MD、National Jewish Health
- スタディチェア:Andrew Liu, MD、National Jewish Health
出版物と役立つリンク
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 (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 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
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
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。