ClinicalTrials.gg
CompletedNCT026128578400-211Updated Oct 10, 2019Results posted

Trial of IMO-8400 in Adult Patients With Dermatomyositis

A Phase 2 interventional study of IMO-8400 Dose Group 1 and IMO-8400 Dose Group 2 in Dermatomyositis, sponsored by Idera Pharmaceuticals, Inc.. Completed at 20 sites in 3 countries. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2019-10-10.

Sponsored by Idera Pharmaceuticals, Inc. · Phase 2, Interventional, and Treatment

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Phase
Phase 2
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 94 studies in Dermatomyositis with a site in United States — 30 open to participants now, 33 under way, 6 of them phase 3. Dermatomyositis · United States.

Enrollment
35th of 73
30 · median 25
Started
2015
with 5 others
Phase 2
31 of 94
5 open now
Registered
37th of 94
by date

Among the 94 studies in Dermatomyositis with a site in United States, this one is the 35th largest by enrollment of the 73 interventional ones that give a count, is one of 6 that started in 2015, is one of 31 in phase 2, and was the 37th registered.

Dermatomyositis

184 studies on the registry are indexed under Dermatomyositis; 63 are open to participants now.

Browse Dermatomyositis studies →

Open to participants now

30 of the 94 studies in Dermatomyositis with a site in United States are open now. Recruiting first, the newest first:

25 more — sign in →

All 30 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 50 Dermatomyositis studies recruiting now, 24 (48%) set no upper age limit and 16 (32%) stop at 75 or younger; 15 take children under 18; 6 take healthy volunteers.

This study: 18 Years to 75 Years · all sexes · no healthy volunteers.

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02

Study summary

The purpose of this study is to determine how safe and effective IMO-8400 is in adults with dermatomyositis.

Read the detailed description

This study will evaluate the safety and efficacy of IMO-8400 in adults with active dermatomyositis (DM).

03

Conditions studied

  • Dermatomyositis

Browse trials for

Keywords

  • dermatomyositis
  • IMO-8400
  • Pioneer
04

Who can participate

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

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Has definite or probable DM based on the criteria of Bohan and Peter
  • Has a Cutaneous Dermatomyositis Disease Area and Severity Index (CDASI)-Activity score ≥15
  • Patients with muscle weakness are eligible; however having muscle weakness is not mandatory.
  • Study participants must have a diagnostic evaluation for cancer if the diagnosis of DM was within 2 years prior to the Screening Visit

Exclusion criteria

Exclusion Criteria:

  • Has ongoing severe dysphagia (e.g., requires a feeding tube) for the 3 months prior to Screening
  • Has known to any oligodeoxynucleotide
  • Has a history of drug or alcohol abuse within one year of screening, or evidence of drug abuse by urine drug screening
  • Has body weight >140 kg
  • Has a diagnosis of Juvenile DM, IBM, drug-induced toxic myopathy, metabolic myopathy, dystrophy, cancer-associated DM, or connective tissue disease-associated DM (e.g., overlap syndrome)
  • Has received one or more of following prohibited treatments within the interval noted prior to Screening (Visit 1):

    1. Rituximab within 24 weeks (Note: patients who received rituximab are only eligible for inclusion if B-cell counts are confirmed to be within normal limits)
    2. Intravenous within 12 weeks
    3. Antimalarials (e.g., hydroxychloroquine) within 36 weeks
    4. Topical corticosteroids (excluding scalp) within 2 weeks
  • Has evidence of or has required treatment for cancer (except for treated, non-invasive carcinoma of the skin or cured cervical carcinoma-in-situ) within 5 years
  • Has interstitial lung disease requiring the use of supplemental oxygen
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
30 participants (actual)

Study arms

  • Placebo comparator
    Placebo

    normal saline subcutaneous injections once a week for 24 weeks.

    Drug: Placebo

  • Experimental
    IMO-8400 Dose Group 1

    IMO-8400 Dose Group 1 subcutaneous injections once a week for 24 weeks.

    Drug: IMO-8400 Dose Group 1

  • Experimental
    IMO-8400 Dose Group 2

    IMO-8400 Dose Group 2 subcutaneous injections once a week for 24 weeks.

    Drug: IMO-8400 Dose Group 2

Interventions

  • IMO-8400 Dose 1 subcutaneous injections once a week for 24 weeks.

  • IMO-8400 Dose 2 subcutaneous injections once a week for 24 weeks.

  • DrugPlacebo

    normal saline subcutaneous injections once a week for 24 weeks.

06

What researchers measure

Primary outcomes

  1. To Assess the Safety and Tolerability of IMO-8400 in Adult Subjects With DM

    Number of participants with different types of Treatment Emergent Adverse Events

    Time frame: 28 weeks (24 weeks treatment + 4 weeks follow up)

Secondary outcomes

  1. Change From Baseline in CDASI (Cutaneous Disease and Activity Severity Index) Activity Score

    Change from baseline in mCDASI (Cutaneous Disease and Activity Severity Index) v2-Activity score as measured at Visits 2, 6, 10, 14, 18, 22 and 26 (EOT/ Week 25). Index is Clinician administered one page instrument designed to evaluate the cutaneous manifestations of DM. CDASI yields a total score that captures overall disease state, an activity score (range:0-100) that reflects the current inflammatory state of disease and a damage score (range: 0-32). The CDASI includes separate measurements for disease activity and damage and yields a total score that captures overall disease state, an activity score that reflects the current inflammatory state of disease, and a damage score. Decreases in CDASI scores are indicative of improvement. In this study, Activity Scores were measured. The scores below are averaged.

    Time frame: 28 weeks (24 weeks treatment + 4 weeks follow up)

07

Results

Posted Oct 10, 2019

Participant flow

Participant flow — Overall Study
MilestonePlaceboIMO-8400 Dose Group 1IMO-8400 Dose Group 2
Started11910
Completed856
Not completed344

Outcome measures

PrimaryTo Assess the Safety and Tolerability of IMO-8400 in Adult Subjects With DM

Number of participants with different types of Treatment Emergent Adverse Events

Time frame:
28 weeks (24 weeks treatment + 4 weeks follow up)
Reported as:
Number · participants
To Assess the Safety and Tolerability of IMO-8400 in Adult Subjects With DM
participantsPlaceboIMO-8400 Dose Group 1IMO-8400 Dose Group 2
TEAE Severity Mild642
TEAE Severity Moderate436
TEAE Severity Severe122
TEAE Causality Probably Related399
TEAE Causality Possibly Related301
TEAE Causality Not Related500
Injection Site Reaction AE2810
Serious TEAE001
TEAE Leading to Treatment Discontinuation131
TEAE Leading to Death000
SecondaryChange From Baseline in CDASI (Cutaneous Disease and Activity Severity Index) Activity Score

Change from baseline in mCDASI (Cutaneous Disease and Activity Severity Index) v2-Activity score as measured at Visits 2, 6, 10, 14, 18, 22 and 26 (EOT/ Week 25). Index is Clinician administered one page instrument designed to evaluate the cutaneous manifestations of DM. CDASI yields a total score that captures overall disease state, an activity score (range:0-100) that reflects the current inflammatory state of disease and a damage score (range: 0-32). The CDASI includes separate measurements for disease activity and damage and yields a total score that captures overall disease state, an activity score that reflects the current inflammatory state of disease, and a damage score. Decreases in CDASI scores are indicative of improvement. In this study, Activity Scores were measured. The scores below are averaged.

Time frame:
28 weeks (24 weeks treatment + 4 weeks follow up)
Reported as:
Least squares mean · units on a scale
Change From Baseline in CDASI (Cutaneous Disease and Activity Severity Index) Activity Score
units on a scalePlaceboIMO-8400 Dose Group 1IMO-8400 Dose Group 2
Baseline30.1 (29.60 to 30.56)31.3 (30.72 to 31.79)30.7 (30.20 to 31.22)
Visit 628.0 (25.23 to 30.76)28.5 (25.27 to 31.66)27.8 (24.91 to 30.71)
Visit 1027.7 (23.66 to 31.83)30.4 (25.54 to 35.26)25.7 (21.40 to 30.07)
Visit 1428.9 (24.46 to 33.35)29.4 (24.17 to 34.70)21.6 (16.75 to 26.51)
Visit 1830.5 (25.71 to 35.22)26.0 (19.98 to 32.09)22.4 (17.24 to 27.63)
Visit 2226.6 (20.59 to 32.61)25.3 (18.40 to 32.13)24.6 (18.39 to 30.82)
Visit 2626.0 (20.97 to 31.04)22.1 (16.19 to 28.01)23.0 (17.38 to 28.61)
Across Visit28.3 (24.74 to 31.77)27.6 (23.41 to 31.72)25.1 (21.36 to 28.90)

Adverse events

Collected over 28 weeks. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Placebo0/11 (0%)0/11 (0%)11/11 (100%)
IMO-8400 Dose Group 10/9 (0%)0/9 (0%)9/9 (100%)
IMO-8400 Dose Group 20/10 (0%)1/10 (10%)10/10 (100%)
Most frequent serious events
Most frequent serious events
EventPlaceboIMO-8400 Dose Group 1IMO-8400 Dose Group 2
Wrist FractureInjury, poisoning and procedural complications0/110/91/10
Most frequent other events
Showing 10 of 103
Most frequent other events
EventPlaceboIMO-8400 Dose Group 1IMO-8400 Dose Group 2
Injection Site ErythemaGeneral disorders1/117/910/10
Injection Site PainGeneral disorders0/116/97/10
Injection Site IndurationGeneral disorders0/115/95/10
Injection Site PruritisGeneral disorders0/113/95/10
Injection Site BruisingGeneral disorders0/112/94/10
FatigueGeneral disorders0/113/92/10
Upper Respiratory Tract InfectionInfections and infestations1/113/92/10
Injection Site VesiclesGeneral disorders0/110/93/10
HeadacheNervous system disorders1/112/93/10
PruritusSkin and subcutaneous tissue disorders2/112/92/10

Baseline characteristics

Age, Continuous
Age, Continuous(Years)PlaceboIMO-8400 Dose Group 1IMO-8400 Dose Group 2Total
Mean51.3 ± 10.5548.3 ± 14.2354.6 ± 14.1251.5 ± 12.75
Sex: Female, Male
Sex: Female, Male(Participants)PlaceboIMO-8400 Dose Group 1IMO-8400 Dose Group 2Total
Female77923
Male4217
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)PlaceboIMO-8400 Dose Group 1IMO-8400 Dose Group 2Total
Hispanic or Latino1113
Not Hispanic or Latino108927
Unknown or Not Reported0000
Region of Enrollment
Region of Enrollment(participants)PlaceboIMO-8400 Dose Group 1IMO-8400 Dose Group 2Total
Hungary2125
United States88824
United Kingdom1001
08

Study locations

20 sites
  • University of Alabama
    Birmingham, Alabama 35210, United States
  • Phoenix Neurological Associates
    Phoenix, Arizona 85018, United States
  • University of California, Irvine
    Irvine, California 92697, United States
  • Stanford Hospital and Clinics
    Stanford, California 94063, United States
  • George Washington University
    Washington, District of Columbia 20052, United States
  • University of Miami
    Miami, Florida 33136, United States
  • Northwestern University
    Chicago, Illinois 60611, United States
  • University of Kansas
    Kansas City, Kansas 66160, United States
  • Johns Hopkins University
    Baltimore, Maryland 21224, United States
  • Brigham and Women's Hospital
    Boston, Massachusetts 02115, United States
  • University of Michigan
    Ann Arbor, Michigan 48109, United States
  • Washington University
    Saint Louis, Missouri 63110, United States
  • Northwell Health
    Great Neck, New York 11021, United States
  • Ohio State University
    Columbus, Ohio 43210, United States
  • University of Pittsburgh
    Pittsburgh, Pennsylvania 15261, United States
  • Medical University of South Carolina
    Charleston, South Carolina 29425, United States
  • University of Vermont College of Medicine
    Burlington, Vermont 05405, United States
  • University of Debrecen
    Debrecen, H-4032, Hungary
  • MRC/ARUK Institute of Ageing and Chronic Disease, University of Liverpool
    Liverpool, L7 8TX, United Kingdom
  • University College London Hospital
    London, WC1E6JF, United Kingdom
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

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 2015 to primary completion in May 2018, 30 months.

Results were first posted in Oct 2019, 1 year 4 months after primary completion.

Of 19 phase 2 interventional studies under Dermatomyositis, half reached primary completion within 31 months of starting (the median), counting those still running; a quarter within 28 and three quarters within 52. This study's 30 months is close to that.

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

Registered
Nov 18, 2015
First posted
Nov 24, 2015
StartActual
Nov 2015
Primary completionActual
May 16, 2018
CompletionActual
Jun 2018
Results first posted
Oct 10, 2019
Last update
Oct 10, 2019
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 Oct 10, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02612857
Lead sponsor
Idera Pharmaceuticals, Inc.
Responsible party
Sponsor
First posted
Nov 24, 2015
Start date
Nov 2015
Primary completion
May 16, 2018
Completion
Jun 2018
Results posted
Oct 10, 2019
Last update
Oct 10, 2019

Study contacts

Joanna Horobin, MD
study director · Idera Pharmaceuticals

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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