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CompletedNCT03077412Divergence2Updated Apr 8, 2022Results posted

Study to Evaluate the Efficacy and Safety of Filgotinib in the Treatment of Perianal Fistulizing Crohn's Disease

A Phase 2 interventional study of Filgotinib and Placebo to match filgotinib in Fistulizing Crohn's Disease, sponsored by Gilead Sciences. Completed at 27 sites in 9 countries. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2022-04-08.

Sponsored by Gilead Sciences · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
57
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

The primary objective of this study is to evaluate the efficacy of filgotinib as compared to placebo in establishing combined fistula response at Week 24. Participants will have the option to enter a separate Long-Term Extension (LTE) study (GS-US-419-3896; NCT02914600) if they meet eligibility requirements.

02

Conditions studied

  • Fistulizing Crohn's Disease

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03

In context

Crohn Disease

1,880 studies on the registry are indexed under Crohn Disease; 462 are open to participants now.

This study's enrollment of 57 is below the median of 66 across 1,188 interventional studies indexed under Crohn Disease.

Browse Crohn Disease studies →

Lead sponsor

Gilead Sciences is the lead sponsor of 680 studies on the registry; 24 are open to participants now.

Of its 259 completed or terminated interventional studies of FDA-regulated products, 249 (96%) 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:

  • Males or non-pregnant, non-lactating females, ages 18 to 75 years, inclusive based on the date of screening visit
  • Diagnosis of Crohn's disease (CD) with a minimum duration of CD of at least 3 months
  • Has draining perianal fistulae as a complication of CD, confirmed by magnetic resonance imaging (MRI) at screening
  • Previously demonstrated an inadequate clinical response, loss of response to, or intolerance of at least 1 of the following agents (depending on current country treatment recommendations/guidelines):

    • Antibiotics AND/OR
    • Immunomodulators AND/OR
    • Tumor necrosis factor α (TNFα) Antagonist
  • Is willing and able to undergo MRI per protocol requirements
  • Is willing and able to undergo flexible sigmoidoscopy per protocol requirements

Key Exclusion Criteria:

  • Presence of current rectovaginal anovaginal or enterovesicular fistulae
  • Presence of ulcerative colitis (UC), indeterminate colitis, ischemic colitis, fulminant colitis, or toxic mega-colon
  • History of total proctocolectomy, total colectomy, presence of ileostomy or colostomy, or likely requirement for surgery during the study
  • Use of any prohibited concomitant medications as described in the study protocol
  • Active tuberculosis (TB) or history of latent TB that has not been treated

Note: Other protocol defined Inclusion/Exclusion criteria may apply.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
57 participants (actual)

Study arms

  • Experimental
    Filgotinib 200 mg

    Filgotinib 200 mg + placebo to match filgotinib 100 mg for 24 weeks

    Drug: Filgotinib · Drug: Placebo to match filgotinib

  • Experimental
    Filgotinib 100 mg

    Filgotinib 100 mg + placebo to match filgotinib 200 mg for 24 weeks

    Drug: Filgotinib · Drug: Placebo to match filgotinib

  • Experimental
    Placebo

    Placebo to match filgotinib 200 mg + placebo to match filgotinib 100 mg for 24 weeks

    Drug: Placebo to match filgotinib

Interventions

  • DrugFilgotinib

    Tablet(s) administered orally once daily

    Also known as: GS-6034, GLPG0634

  • DrugPlacebo to match filgotinib

    Tablet(s) administered orally once daily

06

What researchers measure

Primary outcomes

  1. Percentage of Participants Who Achieved Combined Fistula Response at Week 24

    Combined fistula response at Week 24 was defined as reduction of greater than or equal to (≥) 1 from baseline in the number of draining external perianal fistula openings that were present at baseline, and absence of fluid collections \> 1 centimeter (cm) on magnetic resonance imaging (MRI) pelvis at Week 24, among participants with at least 1 draining external perianal fistula opening at baseline.

    Time frame: Week 24

Secondary outcomes

  1. Percentage of Participants Who Achieved Combined Fistula Remission at Week 24

    Combined fistula remission at Week 24 was defined as perianal fistula closure of all external openings that were draining at baseline, and absence of fluid collections \> 1 cm on MRI of pelvis at Week 24, among participants with at least 1 draining external perianal fistula opening at baseline.

    Time frame: Week 24

  2. Time to Clinical Fistula Response up to Week 24

    Time to clinical fistula response was defined as the time interval in days from date of first dosing of study drug to the first observation (during scheduled or unscheduled clinical visits) when ≥ 1 of the draining external perianal fistula openings that were present at baseline achieves perianal fistula closure, among participants with at least 1 draining external perianal fistula opening at baseline. Participants not known to had a clinical fistula response were to have their clinical fistula response time censored at the last time that lack of clinical fistula response was documented.

    Time frame: Time from treatment start to first visit when ≥ 1 of the draining external perianal fistula openings that were present at baseline achieved perianal fistula closure up to Week 24

  3. Time to Clinical Fistula Remission up to Week 24

    Time to clinical fistula remission was defined as the time interval in days from date of first dosing of study drug to the first observation (during schedule or unscheduled clinical visits) of perianal fistula closure of all external openings that were draining at baseline, among participants with at least 1 draining external perianal fistula opening at baseline. Participants not known to had a clinical fistula remission were have their clinical fistula remission time censored at the last time that lack of clinical fistula remission was documented.

    Time frame: Time from treatment start to first visit when perianal fistula closure takes place of all external openings that were draining at baseline up to Week 24

  4. Percentage of Participants Who Achieved Proctitis Remission at Week 24

    The simple endoscopic score for Crohn's disease (SES-CD) score evaluates 4 endoscopic variables (ulcer size, ulcerated surface, affected surface, and presence of narrowings). The total SES-CD is calculated as the sum of the 4 variables for the required bowel segment. Values are given to each variable and for every examined bowel segment. The SES-CD size of ulcer subscore ranges from 0 (none) to 3 (very large) and for ulcerated surface subscore ranges from 0 (none) to 3 (\>30 % of affected area). Higher value of the subscore indicates disease worsening. Proctitis remission at Week 24 was defined as a proctitis SES-CD score (sum of ulcer size and ulcerated surface SES-CD endoscopy subscores for the rectum and anal canal) of 0 assessed by centrally read flexible sigmoidoscopy at Week 24, in participants that had moderately to severely active proctitis at baseline. Moderately to Severely Active Proctitis defined as proctitis SES-CD Score \> 2.

    Time frame: Week 24

07

Results

Posted Apr 8, 2022

Participant flow

Participants were enrolled at study sites in Europe and the United States. The first participant was screened on 06 April 2017. The last study visit occurred on 17 February 2021.

Participant flow — Overall Study
MilestoneFilgotinib 200 mgFilgotinib 100 mgPlacebo
Started172515
Completed14126
Not completed3139
Withdrew: Non-responder [crohn's disease activity index (cdai) and perianal cdai non-response] at week 10153
Withdrew: Protocol-specified disease worsening133
Withdrew: Adverse event122
Withdrew: Investigator's discretion011
Withdrew: Withdrew consent020

Outcome measures

PrimaryPercentage of Participants Who Achieved Combined Fistula Response at Week 24

Combined fistula response at Week 24 was defined as reduction of greater than or equal to (≥) 1 from baseline in the number of draining external perianal fistula openings that were present at baseline, and absence of fluid collections \> 1 centimeter (cm) on magnetic resonance imaging (MRI) pelvis at Week 24, among participants with at least 1 draining external perianal fistula opening at baseline.

Time frame:
Week 24
Reported as:
Number · percentage of participants
Percentage of Participants Who Achieved Combined Fistula Response at Week 24
percentage of participantsFilgotinib 200 mgFilgotinib 100 mgPlacebo
Percentage of Participants Who Achieved Combined Fistula Response at Week 2447.1 (26.0 to 68.9)29.2 (14.6 to 47.9)25.0 (7.2 to 52.7)
Statistical analysis
  • Filgotinib 200 mg vs Placebo · Risk difference in percentages: 22.1 · 90% CI -9.9 to 50.0The 90% exact confidence interval (CI) was calculated based on binomial distribution (Clopper-Pearson method).
  • Filgotinib 100 mg vs Placebo · Risk difference in percentages: 4.2 · 90% CI -26.5 to 34.3The 90% exact CI was calculated based on binomial distribution (Clopper-Pearson method).
SecondaryPercentage of Participants Who Achieved Combined Fistula Remission at Week 24

Combined fistula remission at Week 24 was defined as perianal fistula closure of all external openings that were draining at baseline, and absence of fluid collections \> 1 cm on MRI of pelvis at Week 24, among participants with at least 1 draining external perianal fistula opening at baseline.

Time frame:
Week 24
Reported as:
Number · percentage of participants
Percentage of Participants Who Achieved Combined Fistula Remission at Week 24
percentage of participantsFilgotinib 200 mgFilgotinib 100 mgPlacebo
Percentage of Participants Who Achieved Combined Fistula Remission at Week 2447.1 (26.0 to 68.9)25.0 (11.5 to 43.5)16.7 (3.0 to 43.8)
Statistical analysis
  • Filgotinib 200 mg vs Placebo · Risk difference in percentages: 30.4 · 90% CI -1.3 to 57.3The 90% exact CI was calculated based on binomial distribution (Clopper-Pearson method).
  • Filgotinib 100 mg vs Placebo · Risk difference in percentages: 8.3 · 90% CI -22.5 to 38.1The 90% exact CI was calculated based on binomial distribution (Clopper-Pearson method).
SecondaryTime to Clinical Fistula Response up to Week 24

Time to clinical fistula response was defined as the time interval in days from date of first dosing of study drug to the first observation (during scheduled or unscheduled clinical visits) when ≥ 1 of the draining external perianal fistula openings that were present at baseline achieves perianal fistula closure, among participants with at least 1 draining external perianal fistula opening at baseline. Participants not known to had a clinical fistula response were to have their clinical fistula response time censored at the last time that lack of clinical fistula response was documented.

Time frame:
Time from treatment start to first visit when ≥ 1 of the draining external perianal fistula openings that were present at baseline achieved perianal fistula closure up to Week 24
Reported as:
Median · days
Time to Clinical Fistula Response up to Week 24
daysFilgotinib 200 mgFilgotinib 100 mgPlacebo
Time to Clinical Fistula Response up to Week 2415 (15 to 28)16 (15 to 71)35.5 (15 to 71)
Statistical analysis
  • Filgotinib 200 mg vs Placebo · Hazard ratio (hr): 1.26 · 90% CI 0.64 to 2.49Hazard ratio was derived from Cox Proportional-Hazards model.
  • Filgotinib 100 mg vs Placebo · Hazard ratio (hr): 0.90 · 90% CI 0.47 to 1.75Hazard ratio was derived from Cox Proportional-Hazards model.
SecondaryTime to Clinical Fistula Remission up to Week 24

Time to clinical fistula remission was defined as the time interval in days from date of first dosing of study drug to the first observation (during schedule or unscheduled clinical visits) of perianal fistula closure of all external openings that were draining at baseline, among participants with at least 1 draining external perianal fistula opening at baseline. Participants not known to had a clinical fistula remission were have their clinical fistula remission time censored at the last time that lack of clinical fistula remission was documented.

Time frame:
Time from treatment start to first visit when perianal fistula closure takes place of all external openings that were draining at baseline up to Week 24
Reported as:
Median · days
Time to Clinical Fistula Remission up to Week 24
daysFilgotinib 200 mgFilgotinib 100 mgPlacebo
Time to Clinical Fistula Remission up to Week 2415 (15 to 70)29 (16 to 74)71 (26 to NA)
Statistical analysis
  • Filgotinib 200 mg vs Placebo · Hazard ratio (hr): 1.87 · 90% CI 0.87 to 4.01Hazard ratio was derived from Cox Proportional-Hazards model.
  • Filgotinib 100 mg vs Placebo · Hazard ratio (hr): 1.37 · 90% CI 0.65 to 2.92Hazard ratio was derived from Cox Proportional-Hazards model.
SecondaryPercentage of Participants Who Achieved Proctitis Remission at Week 24

The simple endoscopic score for Crohn's disease (SES-CD) score evaluates 4 endoscopic variables (ulcer size, ulcerated surface, affected surface, and presence of narrowings). The total SES-CD is calculated as the sum of the 4 variables for the required bowel segment. Values are given to each variable and for every examined bowel segment. The SES-CD size of ulcer subscore ranges from 0 (none) to 3 (very large) and for ulcerated surface subscore ranges from 0 (none) to 3 (\>30 % of affected area). Higher value of the subscore indicates disease worsening. Proctitis remission at Week 24 was defined as a proctitis SES-CD score (sum of ulcer size and ulcerated surface SES-CD endoscopy subscores for the rectum and anal canal) of 0 assessed by centrally read flexible sigmoidoscopy at Week 24, in participants that had moderately to severely active proctitis at baseline. Moderately to Severely Active Proctitis defined as proctitis SES-CD Score \> 2.

Time frame:
Week 24
Reported as:
Number · percentage of participants
Percentage of Participants Who Achieved Proctitis Remission at Week 24
percentage of participantsFilgotinib 200 mgFilgotinib 100 mgPlacebo
Percentage of Participants Who Achieved Proctitis Remission at Week 2410.0 (0.5 to 39.4)15.4 (2.8 to 41.0)28.6 (5.3 to 65.9)
Statistical analysis
  • Filgotinib 200 mg vs Placebo · Risk difference in percentages: -18.6 · 90% CI -55.6 to 21.3The 90% exact CI was calculated based on binomial distribution (Clopper-Pearson method).
  • Filgotinib 100 mg vs Placebo · Risk difference in percentages: -13.2 · 90% CI -51.0 to 24.1The 90% exact CI was calculated based on binomial distribution (Clopper-Pearson method).

Adverse events

Collected over All-Cause Mortality: First dose date up to 24 weeks plus 30 days; Adverse Events: First dose date up to 24 weeks plus 30 days. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Filgotinib 200 mg0/17 (0%)5/17 (29.4%)13/17 (76.5%)
Filgotinib 100 mg0/25 (0%)2/25 (8%)14/25 (56%)
Placebo0/15 (0%)1/15 (6.7%)11/15 (73.3%)
Most frequent serious events
Most frequent serious events
EventFilgotinib 200 mgFilgotinib 100 mgPlacebo
Crohn's diseaseGastrointestinal disorders1/172/250/15
Vulval abscessInfections and infestations0/170/251/15
Intestinal obstructionGastrointestinal disorders1/170/250/15
Large intestinal stenosisGastrointestinal disorders1/170/250/15
BronchitisInfections and infestations1/170/250/15
Suspected COVID-19Infections and infestations1/170/250/15
Most frequent other events
Showing 10 of 67
Most frequent other events
EventFilgotinib 200 mgFilgotinib 100 mgPlacebo
FatigueGeneral disorders3/173/250/15
Anal abscessInfections and infestations3/170/251/15
InfluenzaInfections and infestations3/171/252/15
ArthralgiaMusculoskeletal and connective tissue disorders3/172/250/15
Anal fistulaGastrointestinal disorders2/172/252/15
NasopharyngitisInfections and infestations2/172/252/15
RashSkin and subcutaneous tissue disorders1/171/252/15
Crohn's diseaseGastrointestinal disorders2/172/251/15
NauseaGastrointestinal disorders2/172/251/15
Oral herpesInfections and infestations2/170/251/15

Baseline characteristics

Age, Continuous
Age, Continuous(years)Filgotinib 200 mgFilgotinib 100 mgPlaceboTotal
Mean39 ± 11.241 ± 14.039 ± 11.840 ± 12.5
Sex: Female, Male
Sex: Female, Male(Participants)Filgotinib 200 mgFilgotinib 100 mgPlaceboTotal
Female910423
Male8151134
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Filgotinib 200 mgFilgotinib 100 mgPlaceboTotal
Race — American Indian or Alaska Native0000
Race — Asian0202
Race — Black or African American1214
Race — Native Hawaiian or Pacific Islander0000
Race — White15191448
Race — Other0000
Race — Not Permitted1203
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Filgotinib 200 mgFilgotinib 100 mgPlaceboTotal
Ethnicity — Not Hispanic or Latino17231555
Ethnicity — Hispanic or Latino0101
Ethnicity — Not Permitted0101
Region of Enrollment
Region of Enrollment(participants)Filgotinib 200 mgFilgotinib 100 mgPlaceboTotal
Canada1315
Austria4228
Belgium1113
Hungary1113
United States415827
United Kingdom1001
Italy0011
France2305
Germany3014
08

Study locations

27 sites
  • University of Miami Crohn's and Colitis Center
    Miami, Florida 33136, United States
  • Center for Interventional Endoscopy - Florida Hospital
    Orlando, Florida 32804, United States
  • University of South Florida South Tampa Campus
    Tampa, Florida 33606, United States
  • Northwestern University Feinberg School of Medicine
    Chicago, Illinois 60611, United States
  • University of Louisville Clinical Trials Unit
    Louisville, Kentucky 40202, United States
  • John Hopkins Gastroenterology and Hepatology Services at the Green Spring Station Clinic
    Baltimore, Maryland 21224, United States
  • Gastro Center of Maryland
    Columbia, Maryland 21045, United States
  • Gastro One
    Germantown, Tennessee 38138, United States
  • Vanderbilt University Medical Center - IBD Clinic
    Nashville, Tennessee 37212-2702, United States
  • Texas Clinical Research Institute
    Arlington, Texas 76012, United States
  • DHAT Research Institute
    Garland, Texas 75044, United States
  • Texas Digestive Disease Consultants
    Southlake, Texas 76092, United States
  • McGuire DVAMC
    Richmond, Virginia 23249, United States
  • Klinikum Klagenfurt am Wörthersee
    Klagenfurt, 9020, Austria
  • Medical University of Vienna, Department of Internal Medicine III, Division Gastroenterology and Hepatology
    Vienna, 1090, Austria
  • Universitaire Ziekenhuizen Leuven
    Leuven, B-3000, Belgium
  • Mount Sinai Hospital
    Toronto, M5T 3L9, Canada
  • Toronto Digestive Disease Associates Inc.
    Toronto, M9V 4B8, Canada
  • CHU Grenoble Alpes - Hopital Michallon (main office)
    La Tronche, 38700, France
  • CHU de Rennes - Hôpital Pontchaillou (main office)
    RENNES Cedex 9, 85809, France
  • CHU Nancy - Hopital de Brabois
    Vandœuvre-lès-Nancy, 54511, France
  • Universitätsklinikum Carl Gustav Carus an der TU Dresden
    Dresden, 01307, Germany
  • Universitatsklinkum Jena
    Jena, 07747, Germany
  • Békés Megyei Központi Kórház Dr. Réthy Pál Tagkórháza
    Bekescsaba, Bekes 5600, Hungary
  • Bugát Pál Kórház, Gasztroenterológiai osztály
    Gyöngyös, Heves 3200, Hungary
  • Istituto Clinico Humanitas
    Rozzano, 20089, Italy
  • Royal Devon and Exeter Hospital, Department of Gastroenterology
    Exeter, EX2 5DW, United Kingdom
09

References and documents

Study documents

  • Study protocol · Feb 4, 2020
  • Statistical analysis plan · Mar 1, 2021

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 8, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03077412
Lead sponsor
Gilead Sciences
Collaborators
Galapagos NV
Responsible party
Sponsor
First posted
Mar 13, 2017
Start date
Apr 6, 2017
Primary completion
Jan 20, 2021
Completion
Feb 17, 2021
Results posted
Apr 8, 2022
Last update
Apr 8, 2022

Study contacts

Gilead Study Director
study director · Gilead Sciences

Oversight

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

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