A Comparative Effectiveness Study of Major Glycemia-lowering Medications for Treatment of Type 2 Diabetes

NCT ID: NCT01794143

Last Updated: 2022-04-14

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

5047 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-05-31

Brief Summary

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The GRADE Study is a pragmatic, unmasked clinical trial that will compare commonly used diabetes medications, when combined with metformin, on glycemia-lowering effectiveness and patient-centered outcomes.

Detailed Description

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Conditions

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Type 2 Diabetes Comparative Effectiveness of Glycemia-lowering Medications

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Sulfonylurea (glimepiride)

Sulfonylurea

Group Type ACTIVE_COMPARATOR

Sulfonylurea (glimepiride)

Intervention Type DRUG

Used in accordance with labeling and/or usual practice.

DPP-4 inhibitor

DPP-4 inhibitor (sitagliptin)

Group Type ACTIVE_COMPARATOR

DPP-4 inhibitor (sitagliptin)

Intervention Type DRUG

Used in accordance with labeling and/or usual practice

GLP-1 receptor agonist

GLP-1 receptor agonist (liraglutide)

Group Type ACTIVE_COMPARATOR

GLP-1 receptor agonist (liraglutide)

Intervention Type DRUG

Used in accordance with labeling and/or usual practice.

Insulin (glargine)

Insulin (glargine), Lantus

Group Type ACTIVE_COMPARATOR

Insulin (glargine)

Intervention Type DRUG

Used in accordance with labeling and/or usual practice.

Interventions

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Sulfonylurea (glimepiride)

Used in accordance with labeling and/or usual practice.

Intervention Type DRUG

DPP-4 inhibitor (sitagliptin)

Used in accordance with labeling and/or usual practice

Intervention Type DRUG

GLP-1 receptor agonist (liraglutide)

Used in accordance with labeling and/or usual practice.

Intervention Type DRUG

Insulin (glargine)

Used in accordance with labeling and/or usual practice.

Intervention Type DRUG

Other Intervention Names

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Glimepiride Sitagliptin Liraglutide Lantus

Eligibility Criteria

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Inclusion Criteria

1. Men or women diagnosed with diabetes at age ≥ 30 years (≥ 20 for American Indians)
2. Duration of diagnosed diabetes \< 10 years
3. HbA1c criteria (at final run-in visit, \~2 weeks prior to randomization): 6.8-8.5%
4. Taking a daily dose of ≥ 1000 mg metformin for a minimum of 8 weeks at final run-in
5. Willingness to administer daily subcutaneous injections, take a second diabetes drug after randomization, potentially initiate insulin and intensify insulin therapy if study metabolic goals are not met, perform self-monitoring of blood glucose
6. Fluent in either English or Spanish
7. A negative pregnancy test for all females of childbearing potential (i.e. pre-menopausal, and not surgically sterile)
8. Provision of signed and dated informed consent prior to any study procedures

Exclusion Criteria

1. Suspected type 1 diabetes (lean with polyuria, polydipsia, and weight loss with little response to metformin) or "secondary" diabetes due to specific causes (e.g. previously diagnosed monogenic syndromes, pancreatic surgery, pancreatitis)
2. Current or previous (within past 6 months) treatment with any diabetes drug/glucose-lowering medication other than metformin (limited use of no longer than seven days is allowed, for example during hospitalization)
3. More than 10 years of treatment with metformin at time of randomization screening
4. History of intolerance or allergy or other contraindications to any of the proposed study medications
5. Resides in the same household with another GRADE study participant
6. Current need for any specific glucose-lowering medications solely for other conditions, for example for polycystic ovary syndrome
7. Symptomatic hyperglycemia requiring immediate therapy during screening or run-in, in the judgment of the physician
8. A life-threatening event within 30 days prior to screening or currently planned major surgery
9. Any major cardiovascular event in previous year, including history of myocardial infarction, stroke, or vascular procedure such as coronary artery or peripheral bypass grafting, stent placements (peripheral or coronary) or angioplasty.
10. Plans for pregnancy during the course of the study for women of child-bearing potential
11. History of or planning bariatric surgery, including banding procedures or surgical gastric and/or intestinal bypass (if banding removed, may be considered eligible after 1 year)
12. History of congestive heart failure (NYHA 3 or greater)
13. History of pancreatitis
14. History of cancer, other than non-melanoma skin cancer, that required therapy in the 5 years prior to randomization
15. Personal or family history of MEN-2 or family history of medullary thyroid cancer
16. Estimated GFR (eGFR) \<30 ml/min/1.73 m2 or end stage renal disease requiring renal replacement therapy
17. History of severe liver disease or acute hepatitis or ALT \> 3 times upper limit of normal
18. Current alcoholism or excessive alcohol intake
19. Previous organ transplant
20. Treatment with oral or systemic glucocorticoids (other than short-term treatment, for example for poison ivy) or disease likely to require periodic or regular glucocorticoid therapy (inhaled steroids are allowed)
21. Treatment with atypical antipsychotics
22. History of hemolytic anemia, chronic transfusion requirement, or other condition rendering HbA1c results unreliable as indicator of chronic glucose levels, or hematocrit \<35 for males and \<33 for females
23. Clinically or medically unstable with expected survival \<1 year
24. Unwillingness to permit sites to contact the PCP to communicate information about the study and the participant's data
25. No non-study PCP or inability to identify such a PCP (who will provide non-study care) by the time of final run-in
26. Participation in another interventional clinical trial
27. Previous randomization in the GRADE study
28. In the opinion of the principal investigator (PI), any other factor, including language barrier, likely to limit compliance with the protocol
Minimum Eligible Age

30 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

NIH

Sponsor Role collaborator

National Heart, Lung, and Blood Institute (NHLBI)

NIH

Sponsor Role collaborator

Becton, Dickinson and Company

INDUSTRY

Sponsor Role collaborator

Bristol-Myers Squibb

INDUSTRY

Sponsor Role collaborator

Merck Sharp & Dohme LLC

INDUSTRY

Sponsor Role collaborator

Novo Nordisk A/S

INDUSTRY

Sponsor Role collaborator

Roche Diagnostics GmbH

INDUSTRY

Sponsor Role collaborator

Sanofi

INDUSTRY

Sponsor Role collaborator

Centers for Disease Control and Prevention

FED

Sponsor Role collaborator

GRADE Study Group

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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David M Nathan, MD

Role: STUDY_CHAIR

Massachusetts General Hospital

Locations

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University of Alabama-Birmingham

Birmingham, Alabama, United States

Site Status

Southwestern American Indian Center

Phoenix, Arizona, United States

Site Status

Veterans Medical Research Foundation, San Diego (San Diego VA)

San Diego, California, United States

Site Status

University of Colorado

Denver, Colorado, United States

Site Status

Yale University School of Medicine

New Haven, Connecticut, United States

Site Status

South Florida VA Foundation (Miami VA)

Miami, Florida, United States

Site Status

Atlanta VA Medical Center

Decatur, Georgia, United States

Site Status

Kaiser Permanente of Georgia

Duluth, Georgia, United States

Site Status

Pacific Health Research and Education Institute (VA Pacific Islands)

Honolulu, Hawaii, United States

Site Status

Indiana University School of Medicine

Indianapolis, Indiana, United States

Site Status

University of Iowa

Iowa City, Iowa, United States

Site Status

Pennington Biomedical Research Center

Baton Rouge, Louisiana, United States

Site Status

MedStar Health Research Institute

Hyattsville, Maryland, United States

Site Status

Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status

University of Michigan

Ann Arbor, Michigan, United States

Site Status

International Diabetes Center

Minneapolis, Minnesota, United States

Site Status

University of Minnesota

Minneapolis, Minnesota, United States

Site Status

Washington University School of Medicine

St Louis, Missouri, United States

Site Status

University of Nebraska

Omaha, Nebraska, United States

Site Status

University of New Mexico School of Medicine

Albuquerque, New Mexico, United States

Site Status

State University of New York (SUNY)-Downstate Medical Center

Brooklyn, New York, United States

Site Status

Columbia University Naomi Berrie Diabetes Center

New York, New York, United States

Site Status

Mount Sinai St. Luke's Hospital

New York, New York, United States

Site Status

Albert Einstein College of Medicine

The Bronx, New York, United States

Site Status

Duke University Medical Center

Durham, North Carolina, United States

Site Status

University of North Carolina Diabetes Care Center

Durham, North Carolina, United States

Site Status

University of Cincinnati

Cincinnati, Ohio, United States

Site Status

Case Western Reserve University School of Medicine

Cleveland, Ohio, United States

Site Status

Kaiser Permanente Northwest

Portland, Oregon, United States

Site Status

Oregon Health and Science University

Portland, Oregon, United States

Site Status

Vanderbilt University Medical Center

Nashville, Tennessee, United States

Site Status

Baylor Endocrine Center

Dallas, Texas, United States

Site Status

University of Texas-Southwestern Medical Center

Dallas, Texas, United States

Site Status

Baylor College of Medicine

Houston, Texas, United States

Site Status

University of Texas Health Science Center

San Antonio, Texas, United States

Site Status

Seattle Institute for Biomedical and Clinical Research

Seattle, Washington, United States

Site Status

Countries

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United States

References

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Luchsinger JA, Rosin SP, Kazemi EJ, Younes N, Suratt CE, Fattaleh BN, Florez HJ, Gonzalez JS, Hollander P, Hox SH, Kuo S, Lee MS, Martens T, Pop-Busui R, Seaquist ER, Waltje AH, Barzilay JI; GRADE Research Group. Glucose-Lowering Medications, Glycemia, and Cognitive Outcomes: The GRADE Randomized Clinical Trial. JAMA Intern Med. 2025 Jul 1;185(7):778-787. doi: 10.1001/jamainternmed.2025.1189.

Reference Type DERIVED
PMID: 40388190 (View on PubMed)

Natale P, Green SC, Tunnicliffe DJ, Pellegrino G, Toyama T, Strippoli GF. Glucagon-like peptide 1 (GLP-1) receptor agonists for people with chronic kidney disease and diabetes. Cochrane Database Syst Rev. 2025 Feb 18;2(2):CD015849. doi: 10.1002/14651858.CD015849.pub2.

Reference Type DERIVED
PMID: 39963952 (View on PubMed)

Ehrmann D, Krause-Steinrauf H, Uschner D, Wen H, Hoogendoorn CJ, Crespo-Ramos G, Presley C, Arends VL, Cohen RM, Garvey WT, Martens T, Willis HJ, Cherrington A, Gonzalez JS; GRADE Research Group. Differential associations of somatic and cognitive-affective symptoms of depression with inflammation and insulin resistance: cross-sectional and longitudinal results from the Emotional Distress Sub-Study of the GRADE study. Diabetologia. 2025 Jul;68(7):1403-1415. doi: 10.1007/s00125-025-06369-8. Epub 2025 Feb 14.

Reference Type DERIVED
PMID: 39951058 (View on PubMed)

Seaquist ER, Phillips LS, Ghosh A, Baker C, Bergenstal RM, Crandall JP, Goland RS, Gramzinski MR, Hox SH, Hsia DS, Johnson ML, Lachin JM, Raskin P, Valencia WM, Waltje AH, Younes N; GRADE Research Group. Glycemia reduction in type 2 diabetes-Hypoglycemia outcomes: A randomized clinical trial. PLoS One. 2024 Nov 15;19(11):e0309907. doi: 10.1371/journal.pone.0309907. eCollection 2024.

Reference Type DERIVED
PMID: 39546502 (View on PubMed)

El-Damanawi R, Stanley IK, Staatz C, Pascoe EM, Craig JC, Johnson DW, Mallett AJ, Hawley CM, Milanzi E, Hiemstra TF, Viecelli AK. Metformin for preventing the progression of chronic kidney disease. Cochrane Database Syst Rev. 2024 Jun 4;6(6):CD013414. doi: 10.1002/14651858.CD013414.pub2.

Reference Type DERIVED
PMID: 38837240 (View on PubMed)

Hsia DS, Younes N, Krause-Steinrauf H, Kassem LS; GRADE Research Group. The incidence of retinopathy in the Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness study (GRADE). J Diabetes Complications. 2024 Mar;38(3):108692. doi: 10.1016/j.jdiacomp.2024.108692. Epub 2024 Feb 5.

Reference Type DERIVED
PMID: 38354481 (View on PubMed)

Green JB, Everett BM, Ghosh A, Younes N, Krause-Steinrauf H, Barzilay J, Desouza C, Inzucchi SE, Pokharel Y, Schade D, Scrymgeour A, Tan MH, Utzschneider KM, Mudaliar S; GRADE Study Research Group. Cardiovascular Outcomes in GRADE (Glycemia Reduction Approaches in Type 2 Diabetes: A Comparative Effectiveness Study). Circulation. 2024 Mar 26;149(13):993-1003. doi: 10.1161/CIRCULATIONAHA.123.066604. Epub 2024 Feb 12.

Reference Type DERIVED
PMID: 38344820 (View on PubMed)

Hampe CS, Shojaie A, Brooks-Worrell B, Dibay S, Utzschneider K, Kahn SE, Larkin ME, Johnson ML, Younes N, Rasouli N, Desouza C, Cohen RM, Park JY, Florez HJ, Valencia WM, Stempel R, Palmer JP, Balasubramanyam A. GAD65Abs Are Not Associated With Beta-Cell Dysfunction in Patients With T2D in the GRADE Study. J Endocr Soc. 2024 Feb 8;8(3):bvad179. doi: 10.1210/jendso/bvad179. eCollection 2024 Jan 16.

Reference Type DERIVED
PMID: 38333889 (View on PubMed)

Luchsinger JA, Kazemi EJ, Sanchez DL, Larkin ME, Valencia WM, Desouza C, Carlson AL, Pop-Busui R, Seaquist ER, Florez HJ, Barzilay J; GRADE Research Group. BMI, insulin sensitivity, and cognition in early type 2 diabetes: The Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness Study. Obesity (Silver Spring). 2023 Jul;31(7):1812-1824. doi: 10.1002/oby.23785.

Reference Type DERIVED
PMID: 37368512 (View on PubMed)

Wexler DJ, de Boer IH, Ghosh A, Younes N, Bebu I, Inzucchi SE, McGill JB, Mudaliar S, Schade D, Steffes MW, Tamborlane WV, Tan MH, Ismail-Beigi F; GRADE Research Group. Comparative Effects of Glucose-Lowering Medications on Kidney Outcomes in Type 2 Diabetes: The GRADE Randomized Clinical Trial. JAMA Intern Med. 2023 Jul 1;183(7):705-714. doi: 10.1001/jamainternmed.2023.1487.

Reference Type DERIVED
PMID: 37213109 (View on PubMed)

Gulanski BI, Butera NM, Krause-Steinrauf H, Lichtman JH, Harindhanavudhi T, Green JB, Suratt CE, AbouAssi H, Desouza C, Ahmann AJ, Wexler DJ, Aroda VR; GRADE Research Group. Higher burden of cardiometabolic and socioeconomic risk factors in women with type 2 diabetes: an analysis of the Glycemic Reduction Approaches in Diabetes (GRADE) baseline cohort. BMJ Open Diabetes Res Care. 2023 Apr;11(2):e003159. doi: 10.1136/bmjdrc-2022-003159.

Reference Type DERIVED
PMID: 37094945 (View on PubMed)

GRADE Study Research Group; Nathan DM, Lachin JM, Bebu I, Burch HB, Buse JB, Cherrington AL, Fortmann SP, Green JB, Kahn SE, Kirkman MS, Krause-Steinrauf H, Larkin ME, Phillips LS, Pop-Busui R, Steffes M, Tiktin M, Tripputi M, Wexler DJ, Younes N. Glycemia Reduction in Type 2 Diabetes - Microvascular and Cardiovascular Outcomes. N Engl J Med. 2022 Sep 22;387(12):1075-1088. doi: 10.1056/NEJMoa2200436.

Reference Type DERIVED
PMID: 36129997 (View on PubMed)

GRADE Study Research Group; Nathan DM, Lachin JM, Balasubramanyam A, Burch HB, Buse JB, Butera NM, Cohen RM, Crandall JP, Kahn SE, Krause-Steinrauf H, Larkin ME, Rasouli N, Tiktin M, Wexler DJ, Younes N. Glycemia Reduction in Type 2 Diabetes - Glycemic Outcomes. N Engl J Med. 2022 Sep 22;387(12):1063-1074. doi: 10.1056/NEJMoa2200433.

Reference Type DERIVED
PMID: 36129996 (View on PubMed)

Barzilay JI, Ghosh A, Busui RP, Ahmann A, Balasubramanyam A, Banerji MA, Cohen RM, Green J, Ismail-Beigi F, Martin CL, Seaquist E, Luchsinger JA; GRADE Research Group. The cross-sectional association of cognition with diabetic peripheral and autonomic neuropathy-The GRADE study. J Diabetes Complications. 2021 Dec;35(12):108047. doi: 10.1016/j.jdiacomp.2021.108047. Epub 2021 Sep 15.

Reference Type DERIVED
PMID: 34556408 (View on PubMed)

Utzschneider KM, Younes N, Rasouli N, Barzilay JI, Banerji MA, Cohen RM, Gonzalez EV, Ismail-Beigi F, Mather KJ, Raskin P, Wexler DJ, Lachin JM, Kahn SE; GRADE Research Group. Shape of the OGTT glucose response curve: relationship with beta-cell function and differences by sex, race, and BMI in adults with early type 2 diabetes treated with metformin. BMJ Open Diabetes Res Care. 2021 Sep;9(1):e002264. doi: 10.1136/bmjdrc-2021-002264.

Reference Type DERIVED
PMID: 34531242 (View on PubMed)

Luchsinger JA, Younes N, Manly JJ, Barzilay J, Valencia W, Larkin ME, Falck-Ytter C, Krause-Steinrauf H, Pop-Busui R, Florez H, Seaquist E; GRADE Research Group; GRADE Research Group Investigators:. Association of Glycemia, Lipids, and Blood Pressure With Cognitive Performance in People With Type 2 Diabetes in the Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness Study (GRADE). Diabetes Care. 2021 Oct;44(10):2286-2292. doi: 10.2337/dc20-2858. Epub 2021 Jul 20.

Reference Type DERIVED
PMID: 34285097 (View on PubMed)

Cherrington AL, Krause-Steinrauf H, Bebu I, Naik AD, Walker E, Golden SH, Gonzalez JS; GRADE Research Group. Study of emotional distress in a comparative effectiveness trial of diabetes treatments: Rationale and design. Contemp Clin Trials. 2021 Aug;107:106366. doi: 10.1016/j.cct.2021.106366. Epub 2021 Mar 22.

Reference Type DERIVED
PMID: 33766761 (View on PubMed)

Utzschneider KM, Younes N, Rasouli N, Barzilay J, Banerji MA, Cohen RM, Gonzalez EV, Mather KJ, Ismail-Beigi F, Raskin P, Wexler DJ, Lachin JM, Kahn SE; GRADE Research Group. Association of glycemia with insulin sensitivity and beta-cell function in adults with early type 2 diabetes on metformin alone. J Diabetes Complications. 2021 May;35(5):107912. doi: 10.1016/j.jdiacomp.2021.107912. Epub 2021 Mar 17.

Reference Type DERIVED
PMID: 33752962 (View on PubMed)

Rasouli N, Younes N, Utzschneider KM, Inzucchi SE, Balasubramanyam A, Cherrington AL, Ismail-Beigi F, Cohen RM, Olson DE, DeFronzo RA, Herman WH, Lachin JM, Kahn SE; GRADE Research Group. Association of Baseline Characteristics With Insulin Sensitivity and beta-Cell Function in the Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness (GRADE) Study Cohort. Diabetes Care. 2021 Feb;44(2):340-349. doi: 10.2337/dc20-1787. Epub 2020 Dec 17.

Reference Type DERIVED
PMID: 33334808 (View on PubMed)

Sivitz WI, Phillips LS, Wexler DJ, Fortmann SP, Camp AW, Tiktin M, Perez M, Craig J, Hollander PA, Cherrington A, Aroda VR, Tan MH, Krakoff J, Rasouli N, Butera NM, Younes N; GRADE Research Group. Optimization of Metformin in the GRADE Cohort: Effect on Glycemia and Body Weight. Diabetes Care. 2020 May;43(5):940-947. doi: 10.2337/dc19-1769. Epub 2020 Mar 5.

Reference Type DERIVED
PMID: 32139384 (View on PubMed)

Wexler DJ, Krause-Steinrauf H, Crandall JP, Florez HJ, Hox SH, Kuhn A, Sood A, Underkofler C, Aroda VR; GRADE Research Group. Baseline Characteristics of Randomized Participants in the Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness Study (GRADE). Diabetes Care. 2019 Nov;42(11):2098-2107. doi: 10.2337/dc19-0901. Epub 2019 Aug 7.

Reference Type DERIVED
PMID: 31391203 (View on PubMed)

Behringer-Massera S, Browne T, George G, Duran S, Cherrington A, McKee MD; GRADE Research Group. Facilitators and barriers to successful recruitment into a large comparative effectiveness trial: a qualitative study. J Comp Eff Res. 2019 Jul;8(10):815-826. doi: 10.2217/cer-2019-0010. Epub 2019 Aug 1.

Reference Type DERIVED
PMID: 31368793 (View on PubMed)

Provided Documents

Download supplemental materials such as informed consent forms, study protocols, or participant manuals.

Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan: GRADE Study

View Document

Document Type: Statistical Analysis Plan: Manuscript - Long Term Differences in Metabolic Status (OP1)

View Document

Document Type: Statistical Analysis Plan: Manuscript - Microvascular and Cardiovascular Outcomes (OP2)

View Document

Document Type: Informed Consent Form

View Document

Other Identifiers

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1U01DK098246-01

Identifier Type: NIH

Identifier Source: secondary_id

View Link

GRADE

Identifier Type: -

Identifier Source: org_study_id

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