Measuring the Negative Predictive Value and Specificity of Serum Biomarkers in Gastric Cancer

N/ANot Yet RecruitingNCT06305169

Sandwell & West Birmingham Hospitals NHS Trust440 enrolled

Overview

Atrophic gastritis where the cells of the stomach lining change is the single most important precursor condition for gastric cancer. Helicobacter pylori a bacteria which causes infection in the stomach is the most important causative agent of inflammation of the stomach, and subsequent atrophic gastritis. The difficulty with diagnosing patients with gastric cancer is that a lot of patients will suffer from heartburn and pain around the stomach, but very few of those will have gastric cancer. This makes it difficult for GPs to know who to refer for further testing as the current cancer referral criteria are very broad. To reduce the need for invasive diagnostic methods such as endoscopy where a flexible tube with camera is inserted into the gullet and stomach via the mouth, a commercially available blood test (GastroPanel ®) designed to measure the levels of certain key stomach hormones to detect atrophic gastritis has been developed. It is extremely rare for gastric cancer to develop without there first being gastric atrophy. A real word study is needed assess the performance of this blood test in a group of patients referred via an urgent cancer pathway for endoscopy in the UK. Scoring systems have been created to help us triage referrals to endoscopy in those with difficulty swallowing, but no similar score is available for those presenting with other upper abdominal symptoms. By using this blood test as well as collecting patient information we hope to create an improved referral criteria for those needing investigation for gastric cancer.

Study Type

OBSERVATIONAL

Enrollment

440

Conditions

Gastric Cancer

Interventions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 100 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: Patients referred for a 2 week wait cancer pathway endoscopy for the following indications Or Upper abdominal mass consistent with stomach cancer Or Stable upper gastrointestinal bleeding Or Aged 55 and over with weight loss and any of the following: * Upper abdominal pain * Reflux * Dyspepsia Exclusion Criteria: * Referrals for therapeutic OGD (e.g. polypectomy, feeding tube insertion) * Previous gastro-duodenal surgery, * Any co-morbidity that may impair ability to provide information or give valid consent (e.g. dementia, cerebral vascular disease)

Outcomes

Primary Outcomes

Measurement of the specificity and negative predictive value of serum biomarkers in gastric cancer

Gastric serum biomarkers measured by gastropanel will be measured in 400 patients who undergo endoscopy. The research team will measure the specificity and negative predictive value of gastropanel in excluding gastric cancer in patient enrolled into the study.

Time frame: 12 months

Secondary Outcomes

Creating a scoring system for patients that warrant urgent endoscopy on the cancer pathway

By using the hormone levels detected in the gastropanel blood test along with a blood test to check for anaemia (low red blood count), patient questionnaire looking at symptoms and the patients medical background the research team will use logistic regression analysis to identify factors strongly associated with cancer diagnosis and derive a risk score.

Time frame: 3 months