Differential EBI2 Expression Upon Allelic Status of the rs9557195 Polymorphism
調査の概要
状態
条件
詳細な説明
EBI2 is a risk gene for inflammatory bowel diseases (rs9557195). EBI2 is a G protein coupled receptors expressed on the immune cells. EBI2 directs migration and activity of immune cells.
Patients of the Swiss IBD cohort study have been genotyped for the allelic status of EBI2. The investigators will recruit patients with Crohn's disease and ulcerative colitis, assess epidemiological and clinical parameters (including clinical activity of IBD) draw blood, isolate lymphocytes, DNA and RNA.
The investigators will test the influence of rs9557195 genotype (TT or CC allel), inflammatory activity and current treatment (infliximab vs. vedolizumab) on expression and activity of EBI2 on blood lymphocytes (by FACS using an EBI2-antibody), mRNA expression (by qPCR) of EBI2 and UBAC2 (located on the opposite DNA strand of EBI2) and activity of lymphocytes on a migration assay.
研究の種類
入学 (予想される)
連絡先と場所
研究場所
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Zurich、スイス、8091
- 募集
- University Hospital Zürich
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コンタクト:
- Rene Roth, MD
- 電話番号:++41 44 255 1111
- メール:rene.roth@usz.ch
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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
we will recruit a mixed population (patients can be in more than one group)
- up to 100 healthy volunteers
- up to 30 IBD patients with the rs9557195-CC IBD risk genotype in clinical remission
- up to 30 IBD patients with the rs9557195-CT IBD risk genotype in clinical remission
- up to 30 IBD patients with the rs9557195-TT IBD low risk genotype in clinical remission
- up to 50 IBD patients of any genotype during a flare
- up to 50 IBD patients of any genotype treated with vedolizumab
- up to 50 IBD patients of any genotype treated with a TNF-inhibitor (infliximab, adalimumab, golimumab, certolizumab)
説明
Inclusion Criteria:
- Patient with IBD OR healthy volunteer
- No major uncontrolled medical/ surgical/ psychiatric condition requiring ongoing management besides IBD in the respective study groups. Well controlled conditions (i.e. medically controlled arterial hypertension, occupational asthma) may be present
Exclusion Criteria: none
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:コホート
- 時間の展望:断面図
コホートと介入
グループ/コホート |
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IBD patients and healthy volunteers
We will recruit IBD patients and healthy volunteers
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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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EBI2 expression - dependent on rs9557195 allele status (FACS)
時間枠:at time of inclusion into the study
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EBI2 levels in PBMCs will be determined by FACS, and compared according to allele status of rs9557195
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at time of inclusion into the study
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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EBI2 expression - dependent on rs9557195 allele status (RT-PCR)
時間枠:at time of inclusion into the study
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EBI2 levels in PBMCs will be determined by RT-PCR, and compared according to EBI2 levels in PBMCs will be determined by RT-PCR, and compared according to allele status of rs9557195
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at time of inclusion into the study
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UBAC2 expression - dependent on rs9557195 allele status (RT-PCR)
時間枠:at time of inclusion into the study
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UBAC2 levels in PBMCs will be determined by RT-PCR, and compared according to 2 levels in PBMCs will be determined by RT-PCR, and compared according to allele status of rs9557195
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at time of inclusion into the study
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Motility of PBMCs dependent on rs9557195 allele status (Boyden chamber)
時間枠:at time of inclusion into the study
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motility of PBMCs will be assessed using the Boyden chamber and compared according to allele status of rs9557195
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at time of inclusion into the study
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EBI2-expression (FACS) in individuals treated with infliximab vs. vedolizumab
時間枠:at time of inclusion into the study
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We will compare EBI2 expression as determined by FACS in individuals with infliximab and vedolizumab treatment
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at time of inclusion into the study
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EBI2-expression (FACS) according to gut inflammation
時間枠:at time of inclusion into the study
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We will compare EBI2 expression (determined by FACS) in IBD patients with severe disease, in remission and in healthy volunteers
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at time of inclusion into the study
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協力者と研究者
スポンサー
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (予想される)
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 (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
その他の研究ID番号
- EBI2-Study
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
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
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。