Clinical trial Recruiting at 26 sites Phase 3 Interventional Ages 18 to 65

Evaluating VX-880 for Type 1 Diabetes with Severe Hypoglycemia

Official title: A Master Protocol to Evaluate the Safety, Tolerability, and Efficacy of Islet Cell Replacement Therapies in Subjects Who Have Type 1 Diabetes Mellitus With Impaired Hypoglycemic Awareness and Severe Hypoglycemia: A Phase 1/2/3 Study of VX-880 and a Phase 1/2 Study of VX-017

Run by Vertex Pharmaceuticals Incorporated · NCT04786262 · Data updated 2026-11-12

This study is testing if a new treatment called VX-880 can help people with Type 1 diabetes who have trouble sensing low blood sugar and have had severe low blood sugar episodes.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 65 Years
SexAll
Enrollment57 (estimated)
SponsorVertex Pharmaceuticals Incorporated
Industry-sponsored
Locations29 sites (Duarte, California and 28 other locations)
StatusRecruiting
StartedMarch 29, 2021
Main results expectedDecember 31, 2027
Study endsDecember 31, 2031
Registry record updatedSeptember 1, 2026
Trial IDNCT04786262 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals with Type 1 diabetes for more than five years who have experienced at least two episodes of severe hypoglycemia in the past year.

Probably not a fit

Patients who have previously undergone islet cell or organ transplants, or those who have received cell therapy, may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study assesses the safety, tolerability, and efficacy of VX-880 infusion in individuals with Type 1 diabetes who experience impaired awareness of hypoglycemia and have a history of severe hypoglycemic episodes. Participants must have been insulin-dependent for over five years and have documented severe hypoglycemia within the past year. The study will involve the use of continuous glucose monitoring to track participants' glucose levels throughout the trial. The goal is to determine if VX-880 can improve the management of their diabetes and reduce the risk of severe hypoglycemia.

Why it matters

Potential benefit: If successful, this treatment could significantly improve the safety and quality of life for patients with Type 1 diabetes who struggle with severe hypoglycemia.

How similar studies have gone: While there have been studies on various treatments for Type 1 diabetes, the specific approach of using VX-880 in this context is novel and has not been extensively tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

* Clinical history of T1D with \>=5 years of duration of insulin dependence
* At least two episodes of documented severe hypoglycemia in the 12 months prior to enrollment
* Stable diabetic treatment
* Consistent use of continuous glucose monitor (CGM) for at least 3 months before Screening and willingness to use CGM for the duration of the study

Key Exclusion Criteria:

-Prior islet cell transplant, organ transplant, or cell therapy

Other protocol-defined Inclusion/Exclusion criteria may apply

Where it's running

  • City of Hope
    Duarte, California, United States
    Recruiting
  • University of California San Francisco
    San Francisco, California, United States
    Recruiting
  • UHealth Diabetes Research Institute
    Miami, Florida, United States
    Recruiting
  • University of Chicago
    Chicago, Illinois, United States
    Recruiting
  • Massachusetts General Hospital
    Boston, Massachusetts, United States
    Recruiting
  • Hospital of the University of Pennsylvania
    Philadelphia, Pennsylvania, United States
    Recruiting
Show 23 more locations
  • University of Pittsburgh Medical Center Montefiore
    Pittsburgh, Pennsylvania, United States
    Recruiting
  • Baylor Scott and White Research Institute
    Dallas, Texas, United States
    Recruiting
  • VCU Medical Center, Richmond
    Richmond, Virginia, United States
    Recruiting
  • University of Wisconsin
    Madison, Wisconsin, United States
    Recruiting
  • University of Alberta, Edmonton
    Edmonton, Canada
    Recruiting
  • McGill University Health Centre
    Montreal, Canada
    Recruiting
  • Toronto General Hospital (TGH)
    Toronto, Canada
    Recruiting
  • Vancouver General Hospital
    Vancouver, Canada
    Recruiting
  • CHU Lille
    Lille, France
    Recruiting
  • Centre de recherche en Biomédecine de Strasbourg
    Strasbourg, France
    Recruiting
  • Dresden Center for Islet Transplantation
    Dresden, Germany
    Recruiting
  • IRCCS Ospedale San Raffaele
    Milan, Italy
    Recruiting
  • Leiden University
    Leiden, Netherlands
    Recruiting
  • Oslo University Hospital
    Oslo, Norway
    Recruiting
  • King Abdullah International Medical Research Center (KAIMRC) - Riyadh - Endocrinology
    Riyadh, Saudi Arabia
    Recruiting
  • King Faisal Specialist Hospital & Research Centre - Riyadh - Endocrinology
    Riyadh, Saudi Arabia
    Recruiting
  • Churchill Hospital
    Headington, Oxford, United Kingdom
    Recruiting
  • Royal Infirmary of Edinburgh
    Edinburgh, United Kingdom
    Recruiting
  • Cardiovascular, Metabolic Medicine and Sciences, King's College London
    London, United Kingdom
    Recruiting
  • The Newcastle upon Tyne Hospitals NHS Foundation Trust
    Newcastle upon Tyne, United Kingdom
    Recruiting
  • Northwestern Organ Transplant Center
    Chicago, Illinois, United States
    Completed
  • Johns Hopkins University
    Baltimore, Maryland, United States
    Completed
  • Hopiteaux Universitaires de Geneve
    Geneva, Switzerland
    Completed

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.