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Pancreatectomy; HyperglycemiaGA-19bNCT06895408

Separate and Combined Extrapancreatic Effects of GIP and GLP-1

A study testing Intravenous Infusion in people with Pancreatectomy; Hyperglycemia, run by University Hospital, Gentofte, Copenhagen at 1 site in Denmark.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The two gut-derived hormones, glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide 1 (GLP-1) are secreted from intestinal cells in relation to a meal and increase insulin secretion from the pancreas. Read more about this study

Who is it for?
Ages 30 to 75 years
Conditions the study is for
Pancreatectomy; Hyperglycemia
What is being tested?
Intravenous Infusion
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
12 participants
Where
1 siteDenmark
Study dates
19 Feb 2025to 14 Jul 2025
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 30 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Total pancreatectomy
  • Caucasians between 30-75 years of age
  • Blood haemoglobin >7.0 mmol/l for males and >6.5 mmol/l for females

Who cannot join

  • Pancreatectomy within the last 3 months
  • Ongoing chemotherapy or chemotherapy within the last 3 months
  • Treatment with GLP-1 receptor agonists within the last 3 months
  • Renal impairment (estimated by estimated glomerular filtration rate (eGFR) <60 ml/min/1.73 m2) and/or albuminuria
  • Calcium related disease, hypo-/hyperthyroidism
  • Known significant liver disease, plasma alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≥3 × normal value or INR (The international normalised ratio based on prothrombin time) outside the normal range
Show all 10Show fewer
  • Severe arteriosclerotic heart disease or heart failure (New York Heart Association (NYHA) group III or IV)
  • Pregnancy and/or breastfeeding
  • Use of more than 14 units of alcohol per week or abuse of narcotics
  • Any condition that the investigator feels would interfere with trial participation

Trial locations and contacts

1 site in 1 country.

Denmark1 site
  • Center for Clinical Metabolic Research, Gentofte Hospital

    Hellerup, 2900

Other trials in Denmark

About this study

Official title: Separate and Combined Extrapancreatic Effects of Glucose-dependent Insulinotropic Polypeptide (GIP) and Glucagon-Like Peptide 1 (GLP-1)

The two gut-derived hormones, glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide 1 (GLP-1) are secreted from intestinal cells in relation to a meal and increase insulin secretion from the pancreas. The hormones also exert effects outside the pancreas, but especially for GIP, these are poorly investigated. Because of this, only GLP-1 based drugs (GLP-1 receptor agonists) are on the market for the treatment of type 2 diabetes and obesity. Nonetheless, a new drug is in clinical development: a combined GIP-GLP-1-receptor agonist (tirzepatide), which has shown better results than GLP-1 alone. The mechanism behind these impressive effects are unknown and in this study, the investigators will look into the exptrapancreatic effects of GIP and GLP-1, separate and combined and thus elucidate the mechanisms of action of this new drug class.

Being tested
Intravenous Infusion
Medical subject headings
Hyperglycemia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Intravenous InfusionOther

    Glucose-dependent Insulinotropic Polypeptide

  • Intravenous InfusionOther

    Glucagon-Like Peptide 1

  • Intravenous InfusionOther

    Glucose-dependent Insulinotropic Polypeptide and Glucagon-Like Peptide 1

  • Intravenous InfusionOther

    Saline

Study groups in NCT06895408
Study groupRoleWhat they receive
GIPExperimentalIntravenous infusion of glucose-dependent insulinotropic polypeptide
Receives: Other: Intravenous Infusion
GLP-1ExperimentalIntravenous infusion of glucagon-like peptide 1
Receives: Other: Intravenous Infusion
GIP + GLP-1ExperimentalIntravenous infusion of glucose-dependent insulinotropic polypeptide and glucagon-like peptide 1
Receives: Other: Intravenous Infusion
SalinePlacebo comparatorIntravenous infusion of saline
Receives: Other: Intravenous Infusion

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Plasma glucose

    Changes in plasma levels of glucose between interventions assessed through frequently blood sampling during the experimental days

    Measured: Up to two months

  2. Plasma glucagon

    Changes in plasma levels of glucagon (gut-derived) between interventions assessed through frequently blood sampling during the experimental days

    Measured: Up to two months

  3. Plasma Insulin/C-peptide

    Changes in plasma levels of insulin/C-peptide between interventions assessed through frequently blood sampling during the experimental days

    Measured: Up to two months

  4. Plasma triglycerides

    Changes in plasma triglycerides between interventions assessed through frequently blood sampling during the experimental days

    Measured: Up to two months

  5. Plasma CTX

    Changes in CTX between interventions assessed through frequently blood sampling during the experimental days

    Measured: Up to two months

  6. Plasma PINP

    Changes in plasma PINP between interventions assessed through frequently blood sampling during the experimental days

    Measured: Up to two months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Mar 2025
  2. Study start19 Feb 2025
  3. Primary completion14 Jul 2025
  4. Study completion14 Jul 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Crossover
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
12 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06895408
Sponsor's protocol ID
101292 (H-21035117)
Acronym
GA-19b
Status last verified
Sep 2025
First submitted
17 Mar 2025
Last updated
9 Sep 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Krogh LSL, Hansen MB, Bergmann NC, Hansen CP, Hartmann B, Holst JJ, Knop FK, Lund AB, Gasbjerg LS. Acute GIP and GLP-1 Administration Exerts Differential Metabolic Effects in Totally Pancreatectomised Individuals. Diabetes Obes Metab. 2026 Aug;28(8):7280-7290. doi: 10.1111/dom.70940. Epub 2026 Jun 1.

    PubMed 42225304

Questions about this trial

What is this clinical trial studying?

A study testing Intravenous Infusion in people with Pancreatectomy; Hyperglycemia, run by University Hospital, Gentofte, Copenhagen at 1 site in Denmark.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 9 Sep 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Plasma glucose (time frame: Up to two months). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06895408, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Sep 2025.

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