Tapered Versus Abrupt Discontinuation of Semaglutide After Treatment of Recurrent Weight Gain or Suboptimal Response Following Metabolic and Bariatric Surgery

measured in kilograms

regaining more than 25% and more than 50% of the weight lost during treatment.

Recurrent weight gain (RWG) is defined by the July 2026 international Delphi consensus as gaining more than 25% of the weight that was initially lost from the post-surgical nadir (the lowest weight point achieved after metabolic and bariatric surgery) Panel and Scope: A two-round modified Delphi study published in mid-2026 involved 66 international experts across five medical specialties to standardize definitions following metabolic and bariatric surgery (MBS) Preferred Terminology: The panel established "suboptimal" as the preferred overarching term (89.5% consensus) Optimal Measurement Metric: Percentage of Total Weight Loss (%TWL) was voted the optimal measurement approach (94.6% consensus) Related Thresholds: * Surgical nonresponse: Less than 10% TWL at 12 months (73.0% consensus). * Normal physiologic response: A 10% fluctuation in percentage of excess weight loss (%EWL) from the nadir (83.8% consensus).

Restart rule: after month 6, open-label pharmacotherapy may be restarted only if the Delphi recurrence criteria are met; every restart is recorded and the patient stays in follow-up. The primary analysis is treatment-policy; a hypothetical estimand ignoring restart is a supporting analysis.

A hand grip strength test measures the maximum force of your hand and forearm muscles using a portable device called a handgrip dynamometer. Position yourself: Sit up straight with your feet flat on the floor. Place your arm by your side with your elbow bent at a 90-degree angle and your wrist in a neutral position. Hold the device: Adjust the handle so it fits comfortably in your hand. Squeeze hard: Squeeze the handles as hard as you can for about 3 to 5 seconds without moving your arm or resting the device against your body. Repeat trials: Take three measurements for each hand, resting for 15 to 30 seconds between attempts. Use either the highest score or the average of the trials. A normal hand grip strength score typically ranges from 40 to 56 kg (88 to 123 lbs) for adult men and 25 to 36 kg (55 to 79 lbs) for adult women aged 20-29.

Waist circumference is a direct measurement of belly fat that helps assess your risk for chronic health issues like heart disease and type 2 diabetes. Health risk increases when waist size goes past certain thresholds: Men: High risk starts above 102 cm (40 inches) according to standard guidelines, though some organizations flag risks starting at 94 cm (37 inches). Women: High risk starts above 88 cm (35 inches), with tighter thresholds starting at 80 cm (31.5 inches) in some regional guidelines.

An HbA1c level reflects your average blood sugar over the past two to three months, and any meaningful change typically takes at least 6 weeks to show because red blood cells live for about 3 months. Normal: Below 5.7% Prediabetes: 5.7% to 6.4% Diabetes: 6.5% or higher

Normal adult values for a lipid panel are measured in milligrams per deciliter (mg/dL): • Total Cholesterol: Below 200 mg/dL is desirable. (Borderline high is 200-239 mg/dL, and high is 240 mg/dL and above.) • LDL ("Bad") Cholesterol: Below 100 mg/dL is optimal. (130-159 mg/dL is borderline high, and 160-189 mg/dL or higher is high.) • HDL ("Good") Cholesterol: 60 mg/dL and higher is protective. Levels below 40 mg/dL for men or below 50 mg/dL for women are considered low. • Triglycerides: Below 150 mg/dL is normal. (Borderline high is 150-199 mg/dL, and high is 200-499 mg/dL.)

Is an adverse event of special interest, after the single suspected unexpected serious adverse reaction in BARI-STEP; investigators screen for it at every visit, with an urgent psychology referral pathway.