Glucagon-Blocking Drug Reduces Need for Insulin and Improves Blood Glucose Levels for Patients with Type 1 Diabetes


Michelle Kirkwood

San Diego, California
June 13, 2017

A single dose of the glucagon-blocking drug REMD-477 can substantially reduce the amount of insulin needed and improve glucose levels without increasing hypoglycemia (low blood glucose levels) in patients with type 1 diabetes, according to the study, “REMD-477, a Human Glucagon Receptor (GCGR) Antibody, Reduces Daily Insulin Requirements and Improves Glycemic Control in People with Type 1 Diabetes (T1D),” presented today at the American Diabetes Association’s 77th Scientific Sessions® at the San Diego Convention Center in San Diego. Glucagon is a hormone produced by the pancreas that raises blood glucose and works together with insulin, which has the opposite effect, to tightly regulate blood glucose concentrations. In individuals with diabetes, glucagon effects may not be appropriately balanced by insulin, resulting in elevated blood glucose. 

The double-blind, randomized, placebo-controlled study enrolled 21 adult patients (8 men and13 women) with T1D. Prior to being admitted for a five-day, in-patient observation period, all participants’ glucose levels were measured by Continuous Glucose Monitoring (CGM). While under observation, all patients received the same meals and a continuous IV insulin infusion to help maintain glucose levels. 

On the second day of observation, 10 patients received a single 70 milligram (mg) subcutaneous injection of the glucagon-blocking drug, REMD-477—a fully human antibody that specifically binds to and blocks glucagon receptor signaling for the treatment of metabolic disorders, including T1D. The remaining 11 patients received a placebo injection. (REMD-477 was discovered with Xenomouse technology, which recapitulates a human antibody response in the mouse, and the antibody sequences are fully human.)  

Daily insulin use and glucose levels of patients who received REMD-477 were compared on day one versus day four of observation to those who received placebo. Results indicated that those who received the REMD-477 treatment were able to reduce daily insulin use by 26 percent (12 units), compared to those who received the placebo (p=0.02). 

Participants received CGM for 8 weeks after inpatient observation. Average daily glucose assessed by CGM was 20 to 31 mg/dL lower in the REMD-477 patients than in the placebo patients during the 3 weekly periods after inpatient observation (p<0.05). In addition, the REMD-477 patients’ blood glucose levels were improved without increasing low blood glucose events. Given the long-acting nature and persistent blood concentrations of REMD-477, it is likely that patients may be dosed once per week.

“Our study strongly supports the long-held theory that blocking glucagon may have a significant clinical impact on care for people with type 1 diabetes by improving glucose levels and lowering insulin doses,” said Jeremy Pettus, MD, assistant professor of medicine in the endocrinology department at the University of California, San Diego. “We expected that the drug [REMD-477] would have an effect, yet the degree to which the drug reduced the need for insulin and improved patients’ blood sugar levels without increasing hypoglycemia events was a surprise.”

This study measured the effect of the glucagon-blocking drug after only one injection. The follow-up study will focus on treating more patients over a longer period of time and will compare weekly injections of two different dose strengths. The results of the follow-up study should provide a more complete picture of how REMD-477 may affect patients’ blood glucose levels, insulin use and weight in an outpatient setting. 

To speak with Dr. Pettus, please contact the Association’s media relations team on-site at the San Diego Convention Center on June 9 - 13 by phone at 619-525-6250 or by email at

The American Diabetes Association’s 77th Scientific Sessions, to be held June 9-13, 2017, at the San Diego Convention Center, is the world’s largest scientific meeting focused on diabetes research, prevention and care. During the five-day meeting, health care professionals have exclusive access to more than 2,500 original research presentations, participate in provocative and engaging exchanges with leading diabetes experts, and can earn Continuing Medical Education (CME) or Continuing Education (CE) credits for educational sessions. The program is grouped into eight interest areas: Acute and Chronic Complications; Behavioral Medicine, Clinical Nutrition, Education and Exercise; Clinical Diabetes/Therapeutics; Epidemiology/Genetics; Immunology/Transplantation; Insulin Action/Molecular Metabolism; Integrated Physiology/Obesity; and Islet Biology/Insulin Secretion. Brenda Montgomery, RN, MSHS, CDE¹, President of Health Care and Education , will deliver her address on Saturday, June 10, and Alvin C. Powers, MD, President of Medicine and Science, will present his address on Sunday, June 11. Eight abstracts were selected by the Scientific Sessions Meeting Planning Committee to be presented on Tuesday, June 13, in the President’s Oral Session. These abstracts represent important research being conducted in the field of diabetes today. In total, the 2017 Scientific Sessions includes 378 abstracts in 49 oral sessions; 2,152 poster presentations including 50 moderated poster discussions; and 360 published-only abstracts. Join the Scientific Sessions conversation on Twitter, #2017ADA. 

About the American Diabetes Association

Nearly half of American adults have diabetes or prediabetes; more than 30 million adults and children have diabetes; and every 21 seconds, another individual is diagnosed with diabetes in the U.S. Founded in 1940, the American Diabetes Association (ADA) is the nation’s leading voluntary health organization whose mission is to prevent and cure diabetes, and to improve the lives of all people affected by diabetes. The ADA drives discovery by funding research to treat, manage and prevent all types of diabetes, as well as to search for cures; raises voice to the urgency of the diabetes epidemic; and works to safeguard policies and programs that protect people with diabetes. In addition, the ADA supports people living with diabetes, those at risk of developing diabetes, and the health care professionals who serve them through information and programs that can improve health outcomes and quality of life. For more information, please call the ADA at 1-800-DIABETES (1-800-342-2383) or visit Information from both of these sources is available in English and Spanish. Find us on Facebook (American Diabetes Association), Twitter (@AmDiabetesAssn) and Instagram (@AmDiabetesAssn)

1 Disclosures for Brenda Montgomery. Employer: AstraZeneca Pharmaceuticals. Montgomery's role as President, Health Care & Education of the American Diabetes Association (Association) is a voluntary position to which she was elected by the members of the Association in 2015. She continues to recuse herself from any and all discussions, decisions or votes that have or could be perceived as having a conflict of interest with her employer.