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NCT04246372

Tofacitinib for Immune Skin Conditions in Down Syndrome

Completed Phase 2 Results posted Last updated 11 December 2025
What this trial tests

Phase 2 trial testing Tofacitinib in Down Syndrome in 47 participants. Completed in 30 October 2024.

Timeline
21 October 2020
Primary endpoint
30 October 2024
30 October 2024

Quick facts

Lead sponsorUniversity of Colorado, Denver
PhasePhase 2
StatusCompleted
Study typeINTERVENTIONAL
Allocationna
Designsingle group
Maskingnone
Primary purposetreatment
Enrollment47
Start date21 October 2020
Primary completion30 October 2024
Estimated completion30 October 2024
Sites1 location across United States

Drugs / interventions tested

Conditions studied

Sponsor

University of Colorado, Denver

Who can join

Adults 12 to 50, any sex, with Down Syndrome or Alopecia Areata. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Number of Serious Adverse Events (SAE) Definitely Related to Tofacitinib Treatment. Primary · Baseline to 16 weeks

Safety as measured by the number of serious adverse events definitely related to tofacitinib treatment.

GroupValue95% CI
On Treatment0
Change in Whole Blood Transcriptome Interferon (IFN) Score Primary · Baseline and 16 weeks

The Interferon Score is a composite molecular measure used to quantify activation of the interferon signaling pathway. Interferon Scores are calculated by summing standardized expression (i.e. (expression value - mean) / standard deviation) of a predefined panel of 16 interferon-stimulated genes, measured by RNA-sequencing of whole blood samples. The resulting composite value provides an integrated measure of interferon pathway activity, with higher scores indicating greater pathway activation. No clinical relevance threshold has been established.

GroupValue95% CI
On Treatment-8.41-11.66 – -5.16
Change in Investigator's Global Assessment (IGA) Secondary · Baseline and 16 weeks

The IGA is used to assess overall changes in severity across five skin conditions (alopecia areata, atopic dermatitis, vitiligo, psoriasis and hidradenitis suppurativa) scored from 0 (clear) to 4 - 5 (very severe).

GroupValue95% CI
On Treatment-1.31-1.76 – -0.86
Change in Dermatology Life Quality Index (DLQI) Secondary · Baseline and 16 weeks

The DLQI is used to assess participant-reported impact of skin conditions on self-image, relationships, and daily activities. Possible total scores range from 0-30, with higher scores indicating a more impaired quality of life.

GroupValue95% CI
On Treatment-2.88-3.75 – -2.01
Change in Severity of Alopecia Tool (SALT) Score in Participants With Alopecia Secondary · Baseline and 16 weeks

The SALT is used to assess changes in degree and extent (area) of hair loss due to alopecia areata on the head. Each of four scalp sites (left side, right side, top and back) are weighted by overall contribution to scalp surface area and rated for percent involvement. Possible total scores range from 0-72, with higher scores indicating a larger affected area.

GroupValue95% CI
On Treatment-28.10-39.27 – -16.92
Change in Modified Sartorius Score (MSS) Score in Participants With Hidradenitis Suppurativa Secondary · Baseline and 16 weeks

The MSS is used to assess changes in areas affected by hidradenitis suppurativa. Each of seven sites (right/left axillae, right/left groin, right/left gluteal, other) are scored by number of lesions, distance between lesions, and presence of normal skin between lesions. Possible total scores range up from 0 with no maximum, with higher scores indicating a more severe involvement.

GroupValue95% CI
On Treatment-19.56-32.19 – -6.94
Change in Psoriasis Area and Severity Index (PASI) Score in Participants With Psoriasis Secondary · Baseline and 16 weeks

The PASI is used to assess changes in extent (area) and severity of psoriasis. Each of four sites (head, upper limbs, trunk, and lower limbs) are weighted by overall contribution to body surface area and separately scored by degree of involvement and three additional parameters (erythema, induration and desquamation), each of which is graded on a severity scale of 0 (Not severe) to 4 (very severe). Possible total scores range from 0-72, with higher scores indicating a more severe involvement.

GroupValue95% CI
On Treatment-7.3-28.90 – 14.30
A Composite Cytokine Score Generated Using the Meso Scale Discovery (MSD) Platform Used to Assess Inflammatory Changes in Plasma. Secondary · Baseline and 16 weeks

The Cytokine Score is a composite molecular measure used to quantify inflammatory changes. Cytokine Scores are calculated by summing standardized abundance (i.e. (abundance value - mean) / standard deviation) of a predefined panel of four inflammatory cytokines, measured in plasma samples using the Meso Scale Discovery platform. The resulting composite value provides an integrated measure of inflammatory activity, with higher scores indicating a more inflammatory state. No clinical relevance threshold has been established.

GroupValue95% CI
On Treatment-2.15-2.81 – -1.49

Adverse events — posted to ClinicalTrials.gov

Time frame: Baseline through 16 weeks.. Reporting threshold: 5%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

On Treatment
Serious: 1/47 (2%)
Deaths: 0/47

Serious adverse events (1 terms)

ReactionSystemOn Treatment
Thromboembolic eventVascular disorders
Other adverse events (23 terms — click to expand)

ReactionSystemOn Treatment
Grade 1 Weight gainInvestigations
Grade 1 CoughRespiratory, thoracic and mediastinal disorders
Grade 1 RhinorrheaRespiratory, thoracic and mediastinal disorders
Grade 1 Nasal congestionRespiratory, thoracic and mediastinal disorders
Grade 1 Rash acneiformSkin and subcutaneous tissue disorders
Grade 1 VomitingGastrointestinal disorders
Grade 1 FeverGeneral disorders
Grade 1 FatigueGeneral disorders
Grade 1 DiarrheaGastrointestinal disorders
Grade 1 Skin and subcutaneous tissue disordersSkin and subcutaneous tissue disorders
Grade 1 Weight lossInvestigations
Grade 2 CoughRespiratory, thoracic and mediastinal disorders
Grade 1 Infections and infestations - COVID-19Infections and infestations
Grade 1 Sore throatRespiratory, thoracic and mediastinal disorders
Grade 2 DiarrheaGastrointestinal disorders
Grade 2 Skin and subcutaneous tissue disordersSkin and subcutaneous tissue disorders
Grade 2 Weight gainInvestigations
Grade 2 Infections and infestations - COVID-19Infections and infestations
Grade 1 Skin infectionInfections and infestations
Grade 1 HeadacheNervous system disorders
Grade 2 Neutrophil count decreasedInvestigations
Grade 1 Productive coughRespiratory, thoracic and mediastinal disorders
Grade 1 Stomach painGastrointestinal disorders

Most-reported serious reactions: Thromboembolic event.

Data from ClinicalTrials.gov NCT04246372 adverse events section.

Sponsor's own description

People with Down syndrome (DS) display widespread immune dysregulation, including several immune skin conditions. This study hypothesizes that pharmacological inhibition of the increased interferon (IFN) signaling seen in DS is safe and could improve associated skin conditions. The study evaluates the safety and efficacy treatment with Tofacitinib, an FDA-approved drug known to block IFN signaling, in adolescents and adults with DS and an autoimmune and/or autoinflammatory skin condition. Investigators will also measure the impact of interferon inhibition on a variety of molecular markers, as well as the cognitive abilities and quality of life of participants.

Publications & conference data

8 peer-reviewed publications reference this trial (live from Europe PMC):

  1. Neutrophil diversity and function in health and disease.
    Zhang F, Xia Y, Su J, Quan F, et al · · 2024 · cited 109× · PMID 39638788 · DOI 10.1038/s41392-024-02049-y
  2. JAK-STAT signaling in human disease: From genetic syndromes to clinical inhibition.
    Luo Y, Alexander M, Gadina M, O'Shea JJ, et al · · 2021 · cited 92× · PMID 34625141 · DOI 10.1016/j.jaci.2021.08.004
  3. Hidradenitis Suppurativa: Where We Are and Where We Are Going.
    Scala E, Cacciapuoti S, Garzorz-Stark N, Megna M, et al · · 2021 · cited 85× · PMID 34440863 · DOI 10.3390/cells10082094
  4. Triplication of the interferon receptor locus contributes to hallmarks of Down syndrome in a mouse model.
    Waugh KA, Minter R, Baxter J, Chi C, et al · · 2023 · cited 80× · PMID 37277650 · DOI 10.1038/s41588-023-01399-7
  5. New developments implicating IL-21 in autoimmune disease.
    Ren HM, Lukacher AE, Rahman ZSM, Olsen NJ. · · 2021 · cited 69× · PMID 34224936 · DOI 10.1016/j.jaut.2021.102689
  6. Multidimensional definition of the interferonopathy of Down syndrome and its response to JAK inhibition.
    Galbraith MD, Rachubinski AL, Smith KP, Araya P, et al · · 2023 · cited 60× · PMID 37379383 · DOI 10.1126/sciadv.adg6218
  7. Advances in vitiligo: Update on therapeutic targets.
    Feng Y, Lu Y. · · 2022 · cited 55× · PMID 36119071 · DOI 10.3389/fimmu.2022.986918
  8. Cytokine Pathways and Investigational Target Therapies in Hidradenitis Suppurativa.
    Del Duca E, Morelli P, Bennardo L, Di Raimondo C, et al · · 2020 · cited 52× · PMID 33182701 · DOI 10.3390/ijms21228436

Verify or expand the search:

Other trials of Tofacitinib

Trials testing the same drug.

Other recruiting trials for Down Syndrome

Currently open trials in the same condition.

Other University of Colorado, Denver trials

Trials by the same sponsor.

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