NCT05688826

The Effect of Sugar Load in IBS Patients Depending on Sucrase-isomaltase Genes

Comparison of Sugar Load Between Normal and Functional Variants of Sucrase-isomaltase Genes in IBS

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 40 (actual)
• Sponsor: Region Skane · Academic / Other
• Sex: All
• Age: 18 Years – 70 Years
• Healthy volunteers: Not accepted

Summary

The investigators know that many patients with irritable bowel syndrome (IBS) have functional variants of genes coding for sucrase-isomaltase enzymes. The investigators will now examine whether these functional variants are associated with defect degradation of sucrose and associated gastrointestinal symptoms

Detailed description

The investigators have in a previous study included IBS patients for treatment with a starch- and sucrose reduced diet (SSRD). The investigators found a great improvement of symptoms. The investigators gene-tested those patients, and now have the full identification of all functional variants encoding sucrase-isomaltase enzymes. The investigators will invite patients from this previous study with normal genes and functional variants of genes. The patients will come fasting over night to the department of clinical research. The participants will ingest 75 g sugar dissolved in 0.8 dl water and flavored with lemon, to ingest during 5 minutes. After that, glucose will determined repeatedly up to 2 hours afterwards. At the same time, the participants have to assess their gastrointestinal sympotms on visual analogue scales (VAS). The investigators will compare the raise in b-glucose and symptoms between the groups of patients, divided into gene expression.

Conditions

• Sucrase-Isomaltase Deficiency
• Irritable Bowel Syndrome

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Sugar	75 g sugar dissolved in 0.8 dl water and flavored with lemon. Ingested during 5 minutes

Timeline

• Start date: 2023-01-04
• Primary completion: 2023-09-27
• Completion: 2025-06-23
• First posted: 2023-01-18
• Last updated: 2025-06-27

Locations

1 site across 1 country: Sweden