NCT05354947 · Yale University
Ultrasound Effects on Glycemic Control in T2DM
(U/S_in_T2DM)
What this study is about
This is an open label, exploratory pilot study that will assess the effects of dual site focused pulsed ultrasound treatment on glycemic parameters in subjects with T2DM.
View original scientific description
This is an open label, exploratory pilot study that will assess the effects of dual site focused pulsed ultrasound treatment on glycemic parameters in subjects with T2DM.
Interventions
DEVICE
Ultrasound Delivery
A General Electric LOGIQ E10 ultrasound machine with a C1-6-XD clear probe, will be used to selectively deliver pulsed ultrasound to both, the portal region of the liver and the superior mesenteric plexus.
Primary outcome measures
Number of Hepatic Adverse Events - Elevation of liver transaminases AST / ALT.
Time frame: 2 weeks
Number of study participants who develop an elevation of liver transaminases compared to baseline parameters, including AST and ALT. Grade 1 delta ALT and / or AST \<3 x ULN; Grade 2 delta ALT and / or AST \>3 - 5 x ULN; Grade 3 delta ALT and / or AST \>5 - 20 x ULN; Grade 4 delta ALT and / or AST \>20 x ULN.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Male or female subjects with a diagnosis of type 2 diabetes ≥ 3 months.
- Age ≥ 21 and ≤ 75 years.
- Currently on a stable treatment regimen of oral anti-diabetic drugs and not currently prescribed for medication escalation. Oral anti-diabetic drugs are limited to one or more of the following:
- Sulfonylureas
- Meglitinides
- Thiazolidinediones
- HbA1c \> 7.0% and \< 10% by local laboratory analysis.
- Body Mass Index (BMI) ≥ 18 to ≤ 40.0 kg/m2.
- Considered generally healthy upon completion of medical history, physical examination and biochemical investigations as judged by the Principal Investigator.
- Female subjects must be non-pregnant and non-lactating and have a negative serum pregnancy test at screening and before the ultrasound session.
- Ability to provide written informed consent.
Exclusion criteria
- History or current diagnosis with T1DM or T2DM subjects on insulin, DPP-4 inhibitors, GLP agonists.
- A subject who is already indicated for medication escalation of their current diabetic therapy.
- A subject who has manifestations of advanced complications from poorly controlled or longstanding diabetes such as diabetic retinopathy, diabetic neuropathy and cardiovascular complications including, but not limited to coronary artery disease, peripheral vascular disease, or cerebrovascular disease such as transient ischemic attack \[TIA\], cerebral infarct, or cerebral hemorrhage.
- History or current diagnosis of cardiac dysrhythmias or heart disease, defined as symptomatic heart failure (New York Heart Association class III or IV), myocardial infarction, unstable angina requiring medication.
- Invasive cardiovascular procedure, such as coronary artery bypass graft surgery (CABG), or angioplasty/percutaneous coronary intervention (PCI) within 6 months of screening.
- History of recurrent severe hypoglycemia (more than 1 event ≤ 6 month)
- Subjects with clinically active malignancy
- History of renal disease or abnormal kidney function tests at Screening (glomerular filtration rate \[GFR\] \< 60 mL/min/1.73m2 as estimated using the MDRD equation).
- History or active hepatic disease or clinically significant abnormal hepatic function tests at Screening suggestive of hepatic impairment (e.g., ALT and/or AST \>2 x ULN, GGT \>2 x ULN, total bilirubin \> 1 x ULN).
- Subjects with a history or presence of any psychiatric disorder that, in the opinion of the Principal Investigator, might confound the results of the trial or pose additional risk in administering the investigational product to the subject.
- Personal or family history of hypercoagulability or thromboembolic disease, including deep vein thrombosis and/or pulmonary embolism (PE)
- History of surgical treatment for obesity (bariatric surgery, gastric banding, etc.) or any other gastrointestinal surgery (including appendectomy, cholecystectomy), any malabsorption disorder, severe gastroparesis, any GI procedure for weight loss (including LAP-BAND®), as well as clinically significant gastrointestinal disorders (e.g. peptic ulcers, severe GERD) at Screening.
- History of any major surgery within 3 months prior to screening.
- Any nerve stimulation study or implanted stimulator, including previously or currently implanted vagus nerve stimulator, previously or currently implanted spinal cord stimulator, other implanted electronic medical device, such as implanted pacemaker or cardioverter/ defibrillator (AICD) or history of seizures.
- Participation in an investigational study within 30 days prior to dosing or 5 half-lives within the last dose of the investigational product given during the investigational study, whichever is longer.
- Current use of any drugs (other than current treatment for diabetes mellitus) that are known to interfere with glucose or insulin metabolism as stated below in table prohibited medication.
- Thyroid hormone use is not allowed unless medication is given on a stable dose for at least 3 months prior to screening.
- Subject is unable to tolerate adhesive tape or has any unresolved adverse skin reaction in the area of the glucose sensor placement.
- Implanted pacemaker or cardioverter/defibrillator (AICD).
- History of any active infection, incl. COVID19 (as ruled out by negative PCR test), except mild viral disease, such as common cold, within 30 days prior to screening.
- Known history or positive test for hepatitis B surface antigen (HBsAg), hepatitis C antibody (HCV Ab), human immunodeficiency virus type 1 (HIV-1) or type 2 (HIV-2).
- History of any recent traumatic injury, including intracerebral hemorrhage and visceral injury.
- Donation or loss of \> 500 mL of blood or blood product within 2 months prior to screening.
- Mental incapacity, unwillingness or language barriers precluding adequate understanding and to follow verbal commands during the ultrasound session or cooperation.
- An abdominal ultrasound scan or exam within 1 month prior to screening and/or any pre-planned ultrasound examinations during the study, or the need to participate in any unplanned outside ultrasound procedures during study.
- Use of the agents listed in Prohibited Medications Table below (prescription or nonprescription) is prohibited until completion of all study activities.
- Identification of risk of hypoglycemia or severely uncontrolled diabetes in screening visit metabolic assessments (CGM, OGTT, and fasting blood draws)
Where
- New Haven, Connecticut
Collaborators
GE Healthcare
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jan 27, 2026 · Source of record for eligibility and locations