for people ages 18-40 (full criteria)
at San Francisco, California and other locations
study started
estimated completion
Principal Investigator
Stephen Gitelman, MD
Photo of Stephen Gitelman
Stephen Gitelman



TThe study is a prospective, randomized, 52-week double-blind, placebo-controlled, multicenter trial in subjects with T1D followed by a 2-year safety follow-up.

Official Title

A Phase 2 Multi-Center, Randomized, Double-Blind, Placebo-Controlled Trial to Evaluate the Safety of TOL-3021 in Patients With New Onset or Established Type 1 Diabetes Mellitus


The SUNRISE study is a prospective, multi-center, double-blind, randomized, placebo-controlled trial in subjects aged 18.0 to <41.0 years diagnosed with T1D, as defined by American Diabetes Association (ADA) criteria, and within 5 years of diagnosis. Time of diagnosis is defined as the first day of insulin administration. Subjects will be stratified by duration (zero up to 1 year and 1 year up to five years) to ensure balance of disease duration across treatment and placebo groups in each strata. Subjects should be randomized no sooner than 6 weeks after diagnosis, unless glycemic range is adequately controlled as confirmed by time in glycemic range (70-180 mg/dL) >55% by CGM recording over 3 or more consecutive or non-consecutive days. Screening assessments will include a physical examination, a fundoscopic photograph, chemistry and hematology safety labs, urinalysis, 24-hour urine protein and creatinine, HbA1c, presence of T1D antibodies, and a 4-hour MMTT. Approximately 99 qualified subjects who meet all selection criteria will be randomized in a 2:1 ratio to treatment with TOL-3021 or placebo and treated for 52 weeks. Study drug treatments will be administered via an IM injection into a large muscle every week for 52 weeks. Continuous glucose monitoring (CGM) will be initiated within 5 days prior to the screening MMTT visit and continued through Week 52. Subjects will agree to diabetes management during the study with the goal of maintaining HbA1c levels of approximately 7.0% without frequent episodes of hypoglycemia.


Diabetes Mellitus, Type 1 Type 1 Diabetes Diabetes Diabetes Mellitus TOL-3021


You can join if…

Open to people ages 18-40

  1. Diagnosis of Type 1 Diabetes Mellitus based on American Diabetes Association (ADA) criteria and within 5.0 years from diagnosis, defined as the first day of insulin administration.
  2. Age at randomization of 18.0 - <41.0 years of age .
  3. Adequate glycemic control as defined by HbA1c ≤7.9% based on point-of-care or local lab measurement and time in glycemic range (70-180 mg/dL) >55% by CGM recording over 3 or more consecutive or non-consecutive days within 5 days prior to baseline mixed meal tolerance test (MMTT).
  4. On insulin therapy (total insulin dose >0.125 U/kg BW)
  5. Presence of antibodies to at least one of the following antigens: GAD65, IA-2, ZnT8, or insulin if obtained within 10 days of the onset of exogenous insulin therapy, or documentation of positive antibodies. In the absence of a positive result for one of the specified antibodies, diagnosis of T1D as per the ADA guidelines..
  6. Peak C-peptide during screening 4-hour mixed meal tolerance test (MMTT) ≥ 0.150 nmol/L.
  7. Willingness to wear the Dexcom G6 continuous glucose monitoring (CGM) device and use according to instructions including recording of total daily insulin dose taken most of each day from screening to end of treatment period.
  8. Written informed consent, including authorization to release health information.
  9. Willingness and ability of subject to comply with all study procedures of the study protocol, including attending all clinic visits.

You CAN'T join if...

  1. Receiving a dose of acetaminophen >4,000 mg per day.
  2. Body Mass Index (BMI) >32 kg/m2
  3. Previous immunotherapy for T1D within 2 years of enrollment.
  4. Diagnosis of liver disease or hepatic enzymes, as defined by ALT and/or AST ≥ 2.5 times the upper limit of normal (ULN).
  5. Hematology: white blood cells (WBC) <3 x 109/L; platelets <100 x 109/L; hemoglobin <10.0 g/dL. (Low WBC values may be repeated every 3-7 days, and results to be discussed with the Medical Monitor.)
  6. Latent autoimmune diabetes of adults (LADA), which is generally associated with preceding history and treatment of T2D with medications typically used for treatment of T2D for more than 30 days.
  7. Monogenic diabetes (MODY).
  8. Estimated glomerular filtration rate (eGFR) <60 ml/min.
  9. History of malignancy, except for cancers in remission >5 years, or basal cell or in situ squamous cell carcinoma of the skin.
  10. . Significant cardiovascular disease (including inadequately controlled hypertension), history of myocardial infarction, unstable angina, use of anti-anginal medicines (e.g., nitroglycerin), or abnormal stress test, which, in the opinion of the Principal Investigator (PI), would interfere with participation in the trial.
  11. . Immunosuppressive therapy (systemic corticosteroids, cyclosporine, azathioprine, or biologics) within 30 days of screening.
  12. . Current or prior (within the last 30 days) use of metformin, sulfonylureas, glinides, thiazolidinediones, GLP1-RAs, DPP-IV inhibitors, pramlintide, or SGLT-2 inhibitors.
  13. . Current use of verapamil or α-methyldopa.
  14. . History of any organ transplant, including islet cell transplant.
  15. . Asthma that requires oral glucocorticoid therapy. Inhaled glucocorticoid therapy is permitted.
  16. . Active autoimmune or immune deficiency disorder including rheumatoid arthritis, moderate-to-severe psoriasis, inflammatory bowel disease, and other autoimmune conditions that may require treatment with TNF or other biologics. Permitted autoimmune disorders include T1D or well-controlled autoimmune conditions (e.g., thyroid disease, celiac disease, and sarcoidosis, all with stable non-immunosuppressive medications for the past 30 days).
  17. . Thyroid-stimulating hormone (TSH) at screening >7.5 mIU/L.
  18. . History of adrenal insufficiency.
  19. . Moderate non-proliferative retinopathy (NPDR) or proliferative retinopathy
  20. . Evidence of infection with HBV (as defined by hepatitis B surface antigen, HBsAg), HCV (anti-HCV antibodies), or HIV.
  21. . Subject is breastfeeding.
  22. . Positive urine pregnancy test: Females of childbearing potential must be excluded if they have a positive urine pregnancy test at screening or randomization or if they are not using medically acceptable methods of birth control. Acceptable methods of birth control include oral or transdermal contraceptives, condom, spermicidal foam, IUD, progestin implant or injection, abstinence, vaginal ring, or sterilization of partner. The reason for non-childbearing potential, such as bilateral tubal ligation, bilateral oophorectomy, hysterectomy, or 1 year or more postmenopausal must be specified in the subject's Case Report Form (CRF).
  23. . Males of reproductive potential who are unwilling to use medically acceptable birth control, unless the female partner is postmenopausal or surgically sterile.
  24. . Any social condition or medical condition that would, in the opinion of the PI, prevent complete participation in the study or would pose a significant hazard to the subject's participation.
  25. . Anticipated major surgery during the duration of the trial, which could interfere with participation in the trial.
  26. . History of drug or alcohol dependence within 12 months of screening.
  27. . Psychiatric disorder that would prevent subjects from giving informed consent.
  28. . Household members of current participants in this protocol.
  29. . Subjects who are not fluent in the English language.
  30. . Participation in other studies involving the administration of an investigational drug or experimental device, including the administration of an experimental agent for T1D within 30 days of screening, or use of an experimental therapeutic device for T1D within 30 days prior to screening. Subjects previously treated with diagnostic devices are not excluded.


  • University of California San Francisco accepting new patients
    San Francisco California 94143 United States
  • Mills-Peninsula Medical Center accepting new patients
    San Mateo California 94401 United States

Lead Scientist at UCSF

  • Stephen Gitelman, MD
    I am involved in a variety of different translational and clinical research projects, most related to diabetes. A number of the on-going studies are attempts to alter the course of autoimmune-mediated type 1 diabetes, often via immunomodulation, in order to preserve endogenous beta cell function. Some of the recent and on-going projects are described below.


accepting new patients
Start Date
Completion Date
Tolerion, Inc.
Phase 2
Study Type
Last Updated