Raw cornstarch and glucose readings in adults with glycogen storage disease type I
Official title: Continuous Glucose Monitoring in Adult Patients With Glycogen Storage Disease Type I and the Impact of Raw Cornstarch Addition to Meals on Postprandial Glycemic Response
Run by Federico II University · NCT07645898 · Data updated 2026-11-12
This study tests whether eating raw cornstarch with meals changes blood sugar after meals in adults with GSD I using continuous glucose monitoring.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 8 (estimated) |
| Sponsor | Federico II University Academic / other |
| Locations | 1 site (Naples, Napoli) |
| Status | Recruiting |
| Started | February 5, 2026 |
| Main results expected | December 2026 |
| Study ends | February 2027 |
| Registry record updated | June 12, 2026 |
| Trial ID | NCT07645898 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (18+) with a genetic diagnosis of GSD Ia or Ib who routinely use CGM and consume raw cornstarch as part of their diet.
✕Probably not a fit
Patients not using CGM or not consuming raw cornstarch as part of their routine care may not benefit from the findings.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is an observational study conducted at the University Hospital Federico II in Naples, Italy. It will monitor postprandial glucose responses in adults with glycogen storage disease type I who regularly use continuous glucose monitoring and raw cornstarch. Researchers will collect clinical and metabolic data, including anthropometrics, body composition, energy expenditure, muscle strength, and standard blood tests, to explore how cornstarch timing and dose relate to glucose profiles. The study does not assign interventions but observes real-world management as part of routine care. Findings may help refine meal timing and cornstarch use to improve glycemic control.
Why it matters
Potential benefit: If successful, results could inform better timing and dosing of cornstarch to improve post-meal glucose control for adults with GSD I.
How similar studies have gone: Prior work using CGM in metabolic disorders supports interpreting postprandial glucose patterns; this exact approach with raw cornstarch in adults is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * confirmed genetic diagnosis of GSD Ia or Ib; * age \>18 years; * routine CGM use; * habitual raw cornstarch consumption. Exclusion Criteria: * psychiatric disorders; * pregnancy, celiac disease; * dialysis treatment; * nocturnal enteral feeding; * severe acute or chronic illnesses.
Where it's running
-
AOU Policlinico "Federico II"
Naples, Napoli, Italy Recruiting
Study contacts
- Study coordinator: Roberta Lupoli Associated Professor, Medical Director at the AOU Federico II
- Email: roberta.lupoli@unina.it
- Phone: +39 0817462302
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.