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ABCG8, UGT1A1 and Gallstone Disease After Bariatric Surgery

16. juli 2026 opdateret af: Benjamin Drejer Petersen, Esbjerg Hospital - University Hospital of Southern Denmark

ABCG8, UGT1A1 and Gallstone Disease After Bariatric Surgery: A Genetic Study

The goal of this observational genetic case-control study is to learn whether two specific genetic variants in ABCG8 and UGT1A1 are associated with gallstone disease after bariatric surgery. The study includes adults who have previously undergone bariatric surgery.

The main questions it aims to answer are whether the ABCG8 D19H variant and the UGT1A1 rs6742078 variant are associated with an increased risk of gallstone disease requiring cholecystectomy after bariatric surgery.

Researchers will compare patients who underwent bariatric surgery and later had their gallbladder removed because of gallstone disease with patients who underwent bariatric surgery but did not develop gallstone disease or undergo cholecystectomy during follow-up.

Participants will provide one blood sample for targeted genetic analysis and complete questionnaires about health, previous surgery, medication use, family history, and gastrointestinal quality of life. Relevant clinical information will also be collected from medical records.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Observationel

Tilmelding (Anslået)

270

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ja

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Adults who previously underwent bariatric surgery in the Region of Southern Denmark will be included. The study population consists of two groups: cases and controls.

Cases are patients who underwent bariatric surgery and subsequently underwent cholecystectomy due to gallstone disease.

Controls are patients who underwent bariatric surgery and have had at least five years of follow-up without registered gallstone disease or cholecystectomy.

All participants will be identified through hospital records in the Region of Southern Denmark. Participants will provide a blood sample for targeted genetic analysis of selected variants in ABCG8 and UGT1A1 and complete questionnaires on health, medication use, family history, and gastrointestinal quality of life.

Beskrivelse

Inclusion Criteria:

  • Bariatric surgery

Exclusion Criteria:

  • Gallstone disease or cholecystectomy prior to bariatric surgery

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Bariatric surgery and subsequently cholecystectomy for gallstone disease
The case group. 135 patients.
Targeted genetic analysis of the ABCG8 D19H variant and the UGT1A1 rs6742078 variant using a blood sample.
Bariatric surgery and no gallstone disease
Control group. A minimum of 5 years of follow up after bariatric surgery.
Targeted genetic analysis of the ABCG8 D19H variant and the UGT1A1 rs6742078 variant using a blood sample.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
ABCG8 carrier status
Tidsramme: 3 years
The primary outcome is the association between ABCG8 D19H carrier status and gallstone-related cholecystectomy after bariatric surgery. Cases are participants who underwent bariatric surgery and subsequently underwent cholecystectomy due to gallstone disease. Controls are participants who underwent bariatric surgery and did not undergo cholecystectomy or develop gallstone disease during follow-up. The association will be estimated by comparing genotype frequencies between cases and controls.
3 years

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Association Between UGT1A1 rs6742078 Carrier Status and Gallstone-Related Cholecystectomy After Bariatric Surgery
Tidsramme: 3 years
Association between UGT1A1 rs6742078 carrier status and gallstone-related cholecystectomy after bariatric surgery, estimated by comparing genotype frequencies between cases and controls.
3 years

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Samarbejdspartnere

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. oktober 2026

Primær færdiggørelse (Anslået)

1. januar 2029

Studieafslutning (Anslået)

1. marts 2029

Datoer for studieregistrering

Først indsendt

9. juli 2026

Først indsendt, der opfyldte QC-kriterier

9. juli 2026

Først opslået (Faktiske)

14. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

17. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

16. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • EsbjergH (ABCG8)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Small study. Individual participant data will not be shared due to the sensitive nature of genetic and clinical data and restrictions under Danish data protection regulations. Aggregated results can be shared in publications and upon reasonable request, where legally and ethically permissible.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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