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CompletedNCT04614571Updated Jun 27, 2024

T Cell Receptor (TCR) Sequencing and Transcriptional Profiling in Adult Celiac Disease Patients Undergoing Gluten Challenge

An interventional study of Gluten Powder in Celiac Disease, sponsored by Regeneron Pharmaceuticals. Completed at 1 site in United States. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2024-06-27.

Sponsored by Regeneron Pharmaceuticals · Not applicable, Interventional, and Other

Phase
Not applicable
Study type
Interventional
Enrollment
24
Allocation
Not applicable
Ages
18 Years to 75 Years
Sex
All
01

Study summary

The primary objectives are:

  • Characterize the T cell receptor (TCR) repertoire in duodenal biopsy samples of participants pre- and post-challenge.
  • Compare for each patient the TCR repertoire of duodenal biopsy samples with the peripheral blood TCR repertoire of each study participant
  • Characterize the transcriptome of duodenal biopsy samples and blood from study participants pre- and post-challenge

The secondary objectives are:

  • Ex vivo identification and validation of DQ-restricted gliadin specific TCRs.
  • Characterize the gluten-challenge induced changes in small intestine histology using standard for Celiac Disease (CeD) histological assessments
02

Conditions studied

  • Celiac Disease

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Keywords

  • CeD
  • HLA-DQ2 positive
  • HLA-DQ8 positive
03

In context

Celiac Disease

339 studies on the registry are indexed under Celiac Disease; 80 are open to participants now.

This study's enrollment of 24 is below the median of 50 across 207 interventional studies indexed under Celiac Disease.

Browse Celiac Disease studies →

Lead sponsor

Regeneron Pharmaceuticals is the lead sponsor of 409 studies on the registry; 92 are open to participants now.

Of its 123 completed or terminated interventional studies of FDA-regulated products, 79 (64%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria:

  1. Have a body mass index (BMI) ≥17 and ≤40 kg/m2 and a body weight >45 kg at the Screening Visit
  2. Be judged to be in good health as defined in the protocol
  3. Have well-controlled biopsy-proven CeD, compliant with a GFD for ≥6 months preceding Screening as defined in the protocol
  4. Be HLA-DQ2 and/or HLA-DQ8 positive as defined in the protocol

Key Exclusion Criteria:

  1. Have a history of gluten triggered acute symptoms (≤24 hours after gluten exposure), and/or severe symptoms (abdominal pain interfering with daily activities, diarrhea with >5 stools/day), and/or prolonged symptoms (duration >7 days)
  2. Have a history of clinically significant endocrine, cardiovascular, hematological, hepatic, immunological (other than CeD or autoimmune thyroid disease), renal, respiratory, genitourinary, or major neurological (including stroke and chronic seizures) abnormalities or disease
  3. Have participated in another investigational trial within 4 weeks before Screening
  4. Have a history of cancer (malignancy) other than nonmelanoma skin cancer
  5. Have a history of significant multiple and/or severe allergies (e.g., latex allergy)
  6. Presence of HIV (HIV Ab), hepatitis B (HBsAg, HBAb) or Hepatitis C (HCV Ab) seropositivity at screening
  7. Ongoing immunosuppression or receive any treatment that might alter T cell repertoire or phenotype

Note: Other protocol-defined inclusion/ exclusion criteria apply

05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
24 participants (actual)

Study arms

  • Other
    Gluten Challenge

    Dietary Supplement: Gluten Powder

Interventions

  • Dietary supplementGluten Powder

    Administered orally daily for 14 days

06

What researchers measure

Primary outcomes

  1. Change from Baseline in small intestine TCR repertoire

    Change in the T-cell receptor repertoire (measured by T cell receptor sequencing) in the small intestine after gluten challenge

    Time frame: Up to 30 days post challenge

  2. Change from Baseline in peripheral blood TCR repertoire

    Change in the T-cell receptor repertoire (measured by T cell receptor sequencing) in peripheral blood after gluten challenge

    Time frame: Up to 30 days post challenge

  3. Changes from baseline in small intestine and peripheral blood transcriptome

    Change in the gene expression profile (transcriptomic analysis by ribonucleic acid \[RNA\] sequencing and cellular indexing of transcriptomes and epitopes by sequencing \[CITEseq\]) of the small intestine and peripheral blood after gluten challenge

    Time frame: Up to 30 days post challenge

Secondary outcomes

  1. Change from Baseline in Small Intestine Histology Based on Intraepithelial Lymphocytes (IEL) Count per 100 epithelial cells

    IELs are white blood cells (WBCs) interspersed between epithelial cells of the small and large intestine where they function to preserve the integrity of the mucosal barrier by protecting the epithelium against pathogen or immune-induced pathology. Increased IELs count indicated more extreme CeD disease symptoms. Baseline values are defined as the last observed value before the first dose of gluten.

    Time frame: Baseline and Day 15

  2. Change from Baseline in Small Intestine Histology Based on Villous Height (Microns), Crypt Depth (Microns) and Villous Height to Crypt Depth Ratio (Vh:Cd)

    Villi are the small finger like projections that line the small intestine and promote nutrient absorption and are often shortened in active CeD. Crypts are grooves between the villi that are often elongated in CeD. A decreased Vh:Cd ratio indicates more extreme CeD disease symptoms. Baseline values (Microns) will be defined as the last observed value before the first dose of gluten.

    Time frame: Baseline and Day 15

  3. Identification and ex vivo functional validation of gluten-specific T cells

    Clonality of peripheral blood mononuclear cell (PBMC)-derived gluten-specific T cells (measured by T cell receptor sequencing) after ex vivo expansion with gluten peptides

    Time frame: Up to 30 days post challenge

07

Study locations

1 site
  • Celiac Research Centre Mass General Hospital
    Boston, Massachusetts 02114, United States
08

References and documents

Individual participant data

Plan to share: Yes — All Individual Patient Data (IPD) that underlie publicly available results will be considered for sharing

Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report, Analytic code

Time frame: When Regeneron has received marketing authorization from major health authorities (e.g., FDA, European Medicines Agency (EMA), Pharmaceuticals and Medical Devices Agency (PMDA), etc.) for the product and indication, has made the study results publicly available (e.g., scientific publication, scientific conference, clinical trial registry), has the legal authority to share the data, and has ensured the ability to protect participant privacy.

Access criteria: Qualified researchers can submit a proposal for access to individual patient or aggregate level data from a Regeneron-sponsored clinical trial through Vivli. Regeneron's Independent Research Request Evaluation Criteria can be found at: https://www.regeneron.com/sites/default/files/Regeneron-External-Data-Sharing-Policy-and-Independent-Research-Request-Evaluation-Criteria.pdf

Data sharing details ↗ · vivli.org

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Nov 2020 to primary completion in May 2024, 42 months.

Of 80 interventional studies with no phase under Celiac Disease, half reached primary completion within 27 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 56. This study's 42 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 24, 2020
First posted
Nov 4, 2020
StartActual
Nov 2, 2020
Primary completionActual
May 30, 2024
CompletionActual
May 30, 2024
Last update
Jun 27, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 27, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04614571
Responsible party
Sponsor
First posted
Nov 4, 2020
Start date
Nov 2, 2020
Primary completion
May 30, 2024
Completion
May 30, 2024
Last update
Jun 27, 2024

Study contacts

Clinical Trial Administrator
study director · Regeneron Pharmaceuticals

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jun 2024. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Glutens

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