Evidence map›Paper›PMID 41643256›Full record

ArticleThe Journal of surgical research2026

Preoperative Glucagon-like Peptide-1 Therapy in Bariatric Surgery Patients With Morbid Obesity (PreMO): Rationale and Study Design for a Randomized Controlled Trial.

Varun Jain, Colleen A McMullen, Joy I Kimbrough, Anna K Rockich, Daniel L Davenport, Gregory S Hawk, Barbara S Nikolajczyk, Philip A Kern, Simon J Fisher, Joshua P Steiner and 2 more

Abstract readClinical Trial Protocol
In one paragraph

Article in The Journal of surgical research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Varun JainDivision of General, Endocrine, and Metabolic Surgery, Department of Surgery, University of Kentucky, Lexington, Kentucky.
Colleen A McMullenDivision of Research, Department of Surgery, University of Kentucky, Lexington, Kentucky.
Joy I KimbroughDivision of Research, Department of Surgery, University of Kentucky, Lexington, Kentucky.
Anna K RockichDivision of Research, Department of Surgery, University of Kentucky, Lexington, Kentucky.
Daniel L DavenportDivision of Healthcare Outcomes and Optimal Patient Services, Department of Surgery, University of Kentucky, Lexington, Kentucky.
Gregory S HawkDr. Bing Zhang Department of Statistics, College of Arts and Sciences, University of Kentucky, Lexington, Kentucky.
Barbara S NikolajczykDepartment of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, Kentucky; Barnstable Brown Diabetes Center, University of Kentucky, Lexington, Kentucky.
Philip A KernBarnstable Brown Diabetes Center, University of Kentucky, Lexington, Kentucky; Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, University of Kentucky, Lexington, Kentucky.
Simon J FisherBarnstable Brown Diabetes Center, University of Kentucky, Lexington, Kentucky; Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, University of Kentucky, Lexington, Kentucky.
Joshua P SteinerDivision of General, Endocrine, and Metabolic Surgery, Department of Surgery, University of Kentucky, Lexington, Kentucky.
William B InabnetDivision of General, Endocrine, and Metabolic Surgery, Department of Surgery, University of Kentucky, Lexington, Kentucky.
Marlene E StarrDivision of Research, Department of Surgery, University of Kentucky, Lexington, Kentucky; Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, Kentucky.

Funding

University of Kentucky Diabetes Prevention COBRE (UK-DPC)P20GM156679 · NIGMS · UNIVERSITY OF KENTUCKY · PI SIMON J FISHER, Barbara Nikolajczyk · 2025 to 2026
$6.8M
The impact of insulin sensitivity on the potential of metformin to delay age-related inflammationR01AG079525 · NIA · UNIVERSITY OF KENTUCKY · PI NIKOLAJCZYK, BARBARA · 2022 to 2025
$2.3M
Impacting Inflammation through Mechanistic Target of Rapamycin (imTOR)R01AG084180 · NIA · UNIVERSITY OF KENTUCKY · PI Barbara Nikolajczyk · 2024 to 2026
$1.9M
NIA NIH HHS R01 AG079525NIA NIH HHS R01 AG084180NIGMS NIH HHS P20 GM156679
6 · The paper itself

Abstract

introductionBariatric surgery is the most effective treatment modality for individuals with morbid obesity, providing significant and durable weight loss and comorbidity resolution. Glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide receptor agonists have shown promise as weight loss drugs, in addition to their use in the treatment of metabolic disorders. While multimodal weight management is the standard of care for individuals with morbid obesity, the benefit of antecedent GLP-1 therapy prior to bariatric surgery has not been well-studied. The objective of this study is to conduct a clinical trial testing the hypothesis that preoperative treatment with a dual GLP-1/glucose-dependent insulinotropic polypeptide receptor agonist enhances preoperative weight loss and decreases tissue inflammation, resulting in improved postoperative outcomes. MATERIALS AND

methodsWe designed a randomized controlled trial (RCT) comparing preoperative treatment with tirzepatide versus standard medical care prior to minimally invasive bariatric surgery with a target enrollment of 50 patients randomized 1:1. For 3 mo preoperatively, the control arm will receive standard care in the form of dietary and lifestyle modification recommendations, whereas the treatment arm will receive weekly tirzepatide, in addition to standard care. Blood will be collected at enrollment through 12-mo postoperatively and analyzed for inflammatory and metabolic markers. Tissues (adipose, stomach, and liver) will be collected intraoperatively for transcriptome profiling and histological assessment.

resultsThis is an ongoing trial with no reportable results.

conclusionCompletion of this pilot RCT will provide data to support initiation of a multicenter RCT to determine therapeutic efficacy, and mechanisms of action, by which patients could benefit from preoperative treatment with tirzepatide.

Indexed as

Bariatric SurgeryIncretinsObesity, MorbidPreoperative CareAdultFemaleGlucagon-Like Peptide-1 Receptor AgonistsHumansMaleMiddle AgedRandomized Controlled Trials as TopicTirzepatideTreatment OutcomeWeight LossGlucagon-Like Peptide-1 Receptor AgonistsIncretinsTirzepatideBariatric surgeryGLP-1ObesityTirzepatideWeight loss

Identifiers

PMID41643256
PMCPMC13159554

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.