Risk Factors for the Development of Celiac Disease in Genetically Predisposed Children (NEOCEL)
2019年7月31日 更新者:Renata Auricchio、Federico II University
Natural History, Risk Factors and Predictive Biomarkers for Celiac Disease: a Prospective Multicenter Study.
The study aims to identify risk factors for the development of Celiac Diseases in families with a recognized genetic risk for the presence of a confirmed proband case.
Candidate mother will be recruited before a planned pregnancy or within the first 12 weeks of pregnancy.
Familial and environmental risk factors will be evaluated within the couple of parents.
Pregnancy will be followed up and appropriate biological samples collected.
Delivery will be supervised in order to collect biological samples.
Newborns will be controlled from birth up to the 6th year of age.
Data about clinical events related to health, life attitudes, nutrition will be collected together with biological samples either in the pregnant mother as well as in the infant.
調査の概要
状態
招待による登録
詳細な説明
- CD epidemics: Celiac Disease incidence is increasing at unexpected rates in the last two decades in all gluten-consuming populations.
- Remarkable stratified genetic risk: there is a strong genetic component as the main risk to develop disease, as supported by > 85% concordance in monozygotic twins, but genetics cannot change over decades and does not explain the epidemic which has been observed. The presence of double HLA DQ2 in female subjects does increases the risk of disease above that of a mendelian recessive inheritance. Hence the estimation of environmental factors associated to the genetic risk is quite complex and does need a very strict prospective longitudinal study design, since each factor is likely to produce, if ever, a quite small odds ratio .
- Gene expression in the first year of life: we have observed, in our previous cohort studies, that the expression of at least a small set of CD associated candidate genes is substantially different between the children who eventually develop Cd and those who do not, already a 6 months of age, much before any measurable recognition of the gluten antigen, development of antibodies or any clinical sign (ref 3 Galatola).
- Epigenetic changes in small intestinal tissue: in addition of the previously reported gene expression differences, gene methylation and related expression of CD associated candidate genes have been observed in the epithelium and the lamina propria of Cd patients . In addition, microRNA appear to be differently expressed in patients versus controls.
- Early events in the first-second year of life before diagnosis: our groups and others observed that the occurrenceof acute respiratoryinfections in the first and second year of life, at least 12 months before the onset of disease, was associated to increased odds (> x2) of developing CD. It is most likely that viral infections (as the large majority of URTI in children) play a role in the development of food antigen intolerance leading to CD . A role of non-pathogenic viral infections has been also suggestedin the developmentof intolerance to gluten.
- No influence of breast-feeding or gluten introduction: breast feeding does not prevent the incidence of CD in at risk infants: its most likely effect is to delay the onset of clinical symptoms. Similarly, the time and quantity of gluten introduction is not associated to the actual incidence, but is only associated to delayed time effects.
- Possible implication of microbiome: despite the complexity of estimating differences in the composition of microbiome in the infants, it has been suggested that infants who later develop CD might show a fila composition slightly different from their matched controls.
研究の種類
観察的
入学 (予想される)
400
連絡先と場所
このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。
研究場所
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Campania
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Naples、Campania、イタリア、80131
- University of Naples Azienda Ospedaliera Universitaria
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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
18年~45年 (大人)
健康ボランティアの受け入れ
いいえ
受講資格のある性別
全て
サンプリング方法
確率サンプル
調査対象母集団
Pregnant women from a family with a confirmed CD proband Live newborns from the above mothers
説明
Inclusion Criteria:
Pregnant women from a family with a confirmed CD proband
Exclusion Criteria:
Women affected by severe chronic disease and cancer Women not able to attend the schedule of visits
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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
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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Incidence of Celiac Disease
時間枠:6 years
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Number of new cases of infants affected by Celiac Disease in relation to genetic (HLA and non-HLA Associated Genes), Epigenetic (DNA Methylation, Gene Expression, Istone Acetylation of candidate gene) and environmental factors (Maternal factors, Nutrition, Infections)
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6 years
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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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Analysis of microbiome
時間枠:6 years
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Difference in the microbiome composition of the group of infants who eventually develop Celiac Disease versus those who do not develop the disease. Comparison of Fecal Microbiome of infants at 4, 12 and 24 months subgrouped by outcome. |
6 years
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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。
スポンサー
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 (実際)
2019年5月1日
一次修了 (予想される)
2022年5月1日
研究の完了 (予想される)
2025年4月30日
試験登録日
最初に提出
2019年7月24日
QC基準を満たした最初の提出物
2019年7月24日
最初の投稿 (実際)
2019年7月26日
学習記録の更新
投稿された最後の更新 (実際)
2019年8月2日
QC基準を満たした最後の更新が送信されました
2019年7月31日
最終確認日
2019年7月1日
詳しくは
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