A Study to Evaluate Glucagon Ready to Use (RTU) in Subjects With Hyperinsulinemic Hypoglycemia After Bariatric Surgery


About this study

The purpose of this study is to assess the effectiveness, safety and tolerability of Glucagon RTU when administered to subjects with a history of bariatric surgery during episodes of post-postprandial hypoglycemia. Twelve eligible subjects will be randomly assigned to receive Glucagon RTU or placebo at the first of two clinical research center (CRC) visits, followed by the other treatment at the second CRC visit. Subjects will be randomly assigned to either Glucagon RTU or Placebo for the duration of a 12-week Outpatient Stage. A follow-up safety assessment visit will occur 14 to 28 days after a subject's last dose of study drug.

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.
  • Aged 18 to 75 years of age, inclusive.
  • Symptoms of hypoglycemia that developed after bariatric surgery (Roux-en-Y gastric bypass [RYGB] only) in the absence of antidiabetic medications.
  • History of bariatric surgery (RYGB only), at least 6 months prior to screening.
  • Whipple’s triad.
  • Ability to both experience and recognize hypoglycemic awareness.
  • Documented glucose levels < 54 mg/dL when experiencing symptoms suggestive of hypoglycemia.
  • Relief of hypoglycemia symptoms when the glucose is raised to normal.
  • Diagnosis of PBH by a physician, requiring intervention such as intake of oral carbohydrates. This diagnosis includes documentation of endogenous hyperinsulinismin the presence of low plasma glucose.
  • In subjects with medical history of diabetes, medical documentation of postoperative remission of diabetes mellitus (fasting glucose < 110 mg/dL), and HbA1c < 6% (or 42 mmol/mL) with all previous antidiabetic medication discontinued for at least 6 months before screening.
  • Body mass index (BMI) ≤ 40kg/m2.
  • Willingness to follow all study procedures, including attending all clinic visits and self- administering blinded study drug at home for 12 weeks.
  • Understands the study procedures, alternative treatment available, and risks involved with the study, and he/she voluntarily agrees to participate by giving written informed consent.
  • Women of childbearing potential must have a negative urine pregnancy test and agreeto use contraception and refrain from breast-feeding during the study and for at least 15 days after participating in the study. Acceptable contraception includes birth control pill/patch/vaginal ring, Depo-Provera® (medroxyprogesterone acetate), Norplant® System (levonorgestrel), IUD, double-barrier method (woman uses a diaphragm and spermicide and man uses a condom), or abstinence. There is no contraception required for males.

Exclusion Criteria:

  • Documented hypoglycemia occurring in the fasting state (> 12 hours fast) within 12 months of study entry.
  • Hypoglycemic unawareness as evidenced by a Gold Scale score > 4 at screening.
  • Early Dumping Syndrome.
  • Known insulinoma or adrenal insufficiency.
  • Active treatment with any insulin/insulin secretagogues, or other diabetes medications except for acarbose and glucagon-like peptide 1 (GLP-1) analogues.
  • Chronic kidney disease Stage 4 or 5 or an estimated Glomerular Filtration Rate (eGFR) < 30 mL/min/1.73 m2 at screening.
  • Hepatic disease, including serum alanine aminotransferase or aspartate aminotransferase ≥ 3 times the upper limit of normal (ULN); hepatic synthetic insufficiency as defined as serum albumin < 3.0 g/dL.
  • Congestive heart failure, New York Heart Association Class III or IV.
  • History of myocardial infarction, unstable angina, or revascularization within 6 months prior to screening.
  • History of a cerebrovascular accident within 6 months prior to screening or with major neurological deficits.
  • Seizure disorder (other than with suspected or documented hypoglycemia).
  • Active malignancy, except for basal or squamous cell skin cancers.
  • Personal or family history of pheochromocytoma or disorder with increased risk of pheochromocytoma (MEN 2, neurofibromatosis, or Von Hippel-Lindau disease).
  • Major surgical operation within 30 days prior to screening.
  • Hematocrit ≤ 30%.
  • Bleeding disorder, treatment with warfarin, or platelet count < 50,000 /mm3.
  • Active alcohol abuse or substance abuse (per investigator assessment).
  • Current chronic administration of oral or parenteral corticosteroids; however, topical, intraarticular, and inhaled corticosteroids are allowed.
  • Use of an investigational drug within 15 days or 5 half-lives, whichever is longer, prior to screening.
  • Member of a special vulnerable populations such as pregnant women, prisoners, institutionalized or incarcerated individuals, or others who may be considered vulnerable.
  • Any other medical condition or finding that, in the opinion of the investigator or sponsor, would compromise the safety of the subject or compromise the integrity of the study data.

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

Rochester, Minn.

Mayo Clinic principal investigator

Adrian Vella, M.D.

Closed for enrollment

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