Use of the Esophageal String Test as a Diagnostic Screening Tool for Eosinophilic Esophagitis Among Africans With Dysphagia in Mali and the United States
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 70
- 试验地点
- 3
- 主要终点
- Sensitivity and specificity of the esophageal string test to detect Eosinophilic Esophagitis.
研究概览
简要总结
Background:
Eosinophilic esophagitis (EoE) is a disease that causes inflammation in the esophagus. The esophagus is the tube that moves food from the mouth to the stomach. Diagnosing EoE currently requires a specialized tool called an endoscope. The esophageal string test (EST) is another test; the EST collects fluid from the upper digestive tract. An EST is simpler and cheaper than an endoscopy. Researchers want to know if an EST can diagnose EoE.
Objective:
To test if the EST can diagnose EoE in people who have trouble swallowing.
Eligibility:
Adults aged 18 to 65 years with trouble swallowing. They must have been born in the African continent or their parents were born in Africa.
Design:
Participants will be screened. They will give blood, stool, urine, and skin swab samples. They will complete surveys about their medical history, diet, symptoms, and home environment. They will bring a sample of their drinking water for testing.
Participants will have an EST. They will swallow a pill capsule that contains a nylon string. One end of the string will be taped to their cheek. The string will unravel down the esophagus and into the stomach. It will be pulled out after 1 hour. Fluids that soaked into the string will be tested.
At a different visit, participants will have an endoscopic exam. An endoscope is a flexible tube that is inserted down the mouth; it can be used to take tissue samples from the esophagus, stomach, and small intestine.
Participants will have a final visit in person, online, or by phone. They will take a survey and talk about their test results.
详细描述
Study Description:
Eligible participants will be enrolled to assess the performance and accuracy of the 1-hour esophageal string test (EST) as a diagnostic screening tool for eosinophilic esophagitis (EoE). Consenting participants in the U.S. (n=30) and Mali (n=30) undergoing clinically indicated esophagogastroduodenoscopy (EGD) will have an EST performed prior to the procedure. Clinical data, including medical history and laboratory test results, will be captured on a case report form. Symptoms will also be assessed using validated patient reporting outcome measures: the Brief Esophageal Dysphagia Questionnaire (BEDQ) and Patient-Reported Outcomes Measurement Information System (PROMIS-GI and -57). Dietary, sociodemographic, and environmental histories will be obtained by validated questionnaires. Blood, urine, stool, and skin swab/tape strip samples will be obtained for additional biomarker studies.
Participants will be screened for intestinal helminth infections by stool polymerase chain reaction (PCR). Tissue samples obtained during EGD will be assessed for Helicobacter pylori by histopathology. Esophageal biopsy samples and remaining EST eluents will be allocated for investigational studies. Air and water samples will be collected from areas within the participants community and analyzed to determine potential correlation with elevated levels of environmental pollutants. The hypothesis of this study is that the 1-hour EST will provide a preliminary estimate of EoE prevalence among Africans and African immigrants presenting with dysphagia.
Primary Objective:
-Assess the accuracy of the 1-hour EST as a diagnostic screening tool for EoE among African individuals presenting with dysphagia in the U.S. and Mali.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •INCLUSION CRITERIA:
- •In order to be eligible to participate in this study, an individual must meet all of the following criteria:
- •Able to provide informed consent.
- •Aged 18 to 65 years.
- •Born in the African continent or their parents were born in Africa,
- •Exhibiting symptoms of dysphagia and/or prior history of food impaction.
- •Undergoing clinically indicated endoscopy at the NIH Clinical Center (U.S.), Centre Hospitalier Universitaire Gabriel Tour(SqrRoot)(Copyright) (Mali), or other local clinics (Mali) and willing to provide research samples and data.
排除标准
- •An individual who meets any of the following criteria will be excluded from participation in this study:
- •Recent steroid use (systemic or swallowed/topical corticosteroid) within 4 weeks prior to endoscopy.
- •Recent use of dupilumab (Dupixent) within the last 6 months.
- •Recent use of other biologic medications (within either 6 months or 5 half-lives, whichever is longer). Examples of biologic medications include:
- •3a. mepolizumab (Nucala)
- •3b. reslizumab (Cinqair, Cinqaero)
- •3c. benralizumab (Fasenra)
- •3d. cendakimab
- •3e. tezepelumab (Tezspire)
- •3f. barzolvolimab
- •4. Individuals suffering from a bleeding diathesis (e.g., hemophilia, severe thrombocytopenia).
- •5. Current use of anticoagulant medications.
- •6. Pregnancy.
- •7. Treatment with another investigational drug or other investigational intervention within 6 months or 5 half-lives whichever is longer.
- •8. Individuals with a known history of any of the following:
- •8a. eosinophilic esophagitis
- •8b. esophageal stricture unable to be passed with an upper endoscope
- •8c. esophageal cancer
- •8d. esophageal motility disorder (e.g., achalasia)
- •8e. esophageal varices
- •8f. esophageal or gastric surgery including fundoplication
- •8g. neurologic cause of dysphagia (e.g., stroke, Parkinson s disease, etc.)
- •8h. allergy to gelatin
- •8i. inability to swallow pills
- •9. Any condition that, in the investigator s opinion, places the individual at undue risk by participating in the study.
- •Co-enrollment guidelines: Co-enrollment in other trials is restricted, other than enrollment on observational studies. Consideration for co-enrollment in trials evaluating the use of a licensed medication will require the approval of the principal investigator in consultation with the medical monitor. Study staff should be notified of co-enrollment on any other protocol as it may require the approval of the principal investigator.
研究组 & 干预措施
Esophageal string test
The esophageal string test is a minimally invasive procedure used to collect esophageal secretions for diagnostic analysis.
干预措施: Esophageal string test (Device)
结局指标
主要结局
Sensitivity and specificity of the esophageal string test to detect Eosinophilic Esophagitis.
时间窗: End of study
Assess the accuracy of the 1-hour EST as a diagnostic screening tool for EoE in populations with limited access to subspecialty care. Sensitivity and specificity provide a measure of accuracy when compared to the diagnostic gold standard.
次要结局
- Proportion of Eosinophilic Esophagitis cases diagnosed in each cohort.(End of study)