Clinical Research Directory
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2 clinical studies listed.
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Tundra lists 2 Breath Analysis clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT06932666
Why Calories Are Not the Same - a Gut Explanation?
The aim of this study is to understand how the gut microbiome influences how much dietary energy humans excrete via feces. This study is based on the hypothesis that levels of methane in exhaled breath represent two different gut microbiome community structures, and therefore influence fecal energy excretion differently. Moreover, this study is assessed in the context of two different diets, both isocaloric and equal in macronutrient composition, but differing in contents of fiber, resistant starch, and large particles; which are hypothesized to impact the gut microbiome differently.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-03-31
1 state
NCT05412758
Augmented Response of Volatile Biomarkers in Assessment of Oesophagogastric Cancer (AROMA 1 / BIORESOURCE)
Cancer of the stomach and oesophagus is among the world's top five cancers. Survival rates are very poor as the disease presents late and early symptoms are non-specific. The study team has developed a non-invasive test for cancers of the stomach and oesophagus based on the detection of volatile organic compounds in exhaled breath. These compounds are known to be produced by both cancers as well as cancer associated bacteria within the gut. The proposed innovation is to improve the accuracy of this test by investigating whether simple metabolic substrates can increase the production of these volatile organic compounds by both the tumour and its associated bacteria.
Gender: All
Ages: 18 Years - 90 Years
Updated: 2025-01-31