Gastric Epigenome and Transcriptome in Humans


About this study

The purpose of this study is to improve our understanding of why gastrointestinal symptoms occur in diabetes mellitus patients and identify new treatment(s) in the future.  

These symptoms are often distressing and may impair glycemic control. We do not understand how diabetes mellitus affects the GI tracy. In 45 patients undergoing sleeve gastrectomy, we plan to compare the cellular composition of circulating peripheral mononuclear cells, stomach immune cells, and interstitial cells of Cajal in the stomach. 


Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Male or female patients, aged 18 years and older.
  • Scheduled to undergo gastric surgery for obesity.
  • Able to provide written informed consent before participating in the study.
  • Able to communicate adequately with the investigator and to comply with the requirements for the entire study.

Exclusion Criteria:

  • Individuals < 18 years old.
  • Clinical evidence of significant cardiovascular, respiratory, renal, hepatic, gastrointestinal, hematological, neurological, psychiatric or other disease that may interfere with the objectives of the study.
  • Medications. Opiates and high doses of anticholinergic agents (e.g., amitriptyline greater than 50 mg daily).
  • Any other condition or prior therapy that, in the opinion of the investigator, would make the patient unsuitable for the study.

Eligibility last updated 9/1/21. Questions regarding updates should be directed to the study team contact.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Adil Bharucha, M.B.B.S., M.D.

Closed-enrolling by invitation

What is this? (?)
Not open to everyone who meets the eligibility criteria, but only those invited to participate by the study team.

Contact information:

Adil Bharucha M.B.B.S., M.D.

(507) 284-2687

More information


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