Clinical trial Recruiting at 1 site Observational Ages 18 and up

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.

More Glycogen Storage Disease trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment8 (estimated)
SponsorFederico II University
Academic / other
Locations1 site (Naples, Napoli)
StatusRecruiting
StartedFebruary 5, 2026
Main results expectedDecember 2026
Study endsFebruary 2027
Registry record updatedJune 12, 2026
Trial IDNCT07645898 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

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.