Safety of Tofacitinib, an Oral Janus Kinase Inhibitor, in Primary Sj(SqrRoot)(Delta)Gren's Syndrome; a Phase Ib-IIa Placebo-controlled Clinical Trial and Associated Mechanistic Studies

  • End date
    Sep 20, 2024
  • participants needed
  • sponsor
    National Institute of Dental and Craniofacial Research (NIDCR)
Updated on 22 October 2022
autoimmune disease



An autoimmune disease is one in which the immune system attacks a person s own body. Sjogren's syndrome (SS) is an autoimmune disease. It often involves multiple systems and organs of the body. Researchers are trying to find new, more effective and safe treatments for SS.


To evaluate the safety and tolerance of tofacitinib in people with SS.


Adults ages 18-75 with SS.


Participants will be screened on a separate protocol. They will undergo:

  • Medical and dental history
  • Physical exam
  • Medicine review
  • Electrocardiogram to test the heart s electrical activity (Participants will lay on a table. Sticky pads will be placed on their body.)
  • Eye exam and test for dry eyes
  • Oral, head, and neck exams
  • Plaque collection (Dental plaques and tongue and mucosal scrapings will be collected using a small tongue depressor.)
  • Salivary gland ultrasound
  • Blood and urine tests
  • Minor salivary gland biopsy (The lower lip will be numbed. Several tiny salivary glands will be removed through a small incision.)
  • Saliva collection
  • Disease assessment.

Participants will repeat some of the screening tests during the study.

Participants will take capsules of the study drug or a placebo by mouth for 168 days.

Participants will have tests to measure blood pressure and the speed of blood flow through the organs. They will also have a test that examines the function and reaction of the blood vessels. For these tests, they will wear blood pressure cuffs and other sensors.

Participants will complete questionnaires about their health.

Participants will have 9 study visits over 28 weeks. They may be contacted by phone between study visits.


Study Description:

As a primary objective, this study represents an innovative investigative measure of the safety and tolerability of JAK inhibition in participants with primary Sj(SqrRoot)(Delta)gren's syndrome. Secondary objectives will include investigating the effects of Tofacitinib on target tissues (e.g., salivary glands), systemic inflammation, and on vascular function in SS participants. We also aim to identify biomarkers of response that may be useful as endpoints in future studies.


Primary Objective:

-To determine the safety and tolerability of Tofacitinib in participants with SS and mild to moderate disease activity.

Secondary Objectives:

  • To assess clinical improvement after treatment with Tofacitinib as measured by changes in the European League Against Rheumatism (EULAR) Sj(SqrRoot)(Delta)gren's syndrome Disease Activity Index (ESSDAI) and no worsening on the Physician s Global assessment Scale (PGA).
  • To demonstrate that treatment with Tofacitinib is effective clinically and biologically in SS individuals with mild to moderate disease.
  • To investigate the effects of Tofacitinib on systemic biomarkers of SS as measures biological effects that can be used as outcome measures to power a larger Clinical Trial.

Primary Endpoint:

-Safety and tolerability will be measured by assessment of adverse events (AEs) and clinical safety laboratory tests throughout the study. Toxicity is defined as any study drug-related Grade 3 adverse event or higher (as measured by the National Cancer Institute (NCI), Common Terminology

Criteria for Adverse Events (CTCAE), Version 5.0).

Secondary Endpoints:

Preliminary assessments of clinical response will be measured

  • Changes in the ESSDAI score between Baseline and Day 168 (end of treatment)
  • Changes in the Physician's Global Assessment (PGA) scores between baseline and study day 168.

Condition Sjogren's Syndrome
Treatment Placebo, tofacitinib
Clinical Study IdentifierNCT04496960
SponsorNational Institute of Dental and Craniofacial Research (NIDCR)
Last Modified on22 October 2022


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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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