Complex Perianal Fistulas in Adult Participants With Crohn's DiseasePhase 3NCT03706456
Phase 3 Study of Cx601 in Participants With Complex Perianal Fistulising Crohn's Disease
A Phase 3 study testing Darvadstrocel in people with Complex Perianal Fistulas in Adult Participants With Crohn's Disease, run by Takeda at 11 sites in Japan.
Trial summary
The purpose of this study is to evaluate the efficacy of darvadstrocel for the treatment of complex perianal fistulas in adult participants with Crohn's disease over 24 weeks. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Complex Perianal Fistulas in Adult Participants With Crohn's Disease
- What is being tested?
- Darvadstrocel
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 22 participants
- Where
- 11 sitesJapan
- Study dates
- 6 Mar 2019to 10 Feb 2023
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- In the opinion of the investigator, the participant is capable of understanding and complying with the protocol requirements.
- The participant or, when applicable, the participant's legally acceptable representative signs and dates a written, informed consent form and any required privacy authorization prior to the initiation of any study procedures.
- The participant who was diagnosed with Crohn's disease at least 6 months prior to the screening period according to the Diagnostic Criteria for Crohn's Disease issued by Research Group for Intractable Inflammatory Bowel Disease Designated as Specified Disease by the Ministry of Health, Labour and Welfare (MHLW) of Japan (revised January 2017).
- The participant is either a male or female outpatient, aged 18 years or older at the time of signing the informed consent form.
- The participant who has non-active or mildly active Crohn's disease defined by the Crohn's disease activity index (CDAI) =<220 evaluated at any time between Visit 1 and Visit 2.
- The participant who has complex perianal fistulas with a maximum of 2 internal openings and a maximum of 3 external openings, confirmed by clinical assessment and MRI. All of the external openings must connect to internal openings. Fistula must have been draining for at least 6 weeks prior to the screening. Complex perianal fistula is defined as the one that meets 1 or more of the following criteria:
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- High (ie, above the dentate line) inter-sphincteric or trans-sphincteric fistula, extrasphincteric fistula, or supra-sphincteric fistula.
- Presence of >=2 external openings (tracts).
- Associated fluid collections.
- The participant whose perianal fistulas were previously treated and have shown an inadequate response (absence of closure of part or all fistula tract, or new fistula during induction treatment) or a loss of response (fistula relapse after complete closure of initial fistula, or fistula worsening after partial closure of initial fistula during maintenance treatment) while they were receiving either immunosuppressants or biologics, or having documented intolerance (occurrence, at any time, of an unacceptable level of treatment-related side effects that makes necessary treatment discontinuation) to any of these treatments administered at least approved or recommended doses during the minimum period mentioned;
- Antibiotics (ciprofloxacin or metronidazole): 1 or more month treatment.
- Immunosuppressants (azathioprine, 6-mercaptopurine or methotrexate): 3 or more months treatment.
- Biologics (anti-tumor necrosis factors [TNFs], anti-integrin or anti-interleukin [IL]-12/23): 14 or more weeks (16 or more weeks for anti-IL-12/23) standard treatment for induction or maintenance.
- A male participant who is nonsterilized and sexually active with a female partner of childbearing potential agrees to use adequate contraception from signing of informed consent up to Week 52 of the study.
- A female participant of childbearing potential who is sexually active with a nonsterilized male partner agrees to use routinely adequate contraception from signing of informed consent up to Week 52 of the study.
Who cannot join
- The participant whose CDAI is >220 at any time between Visit 1 and Visit 2, or who has active Crohn's disease requiring a new of escalating immediate therapy.
- The participant who has concomitant rectovaginal or rectovesical fistulas.
- The participant who has >2 internal openings of >3 external openings.
- The participant who is naïve to protocol required treatment for complex perianal fistulising Crohn's disease (ie, antibiotics, immunosuppressants or biologics).
- The participant who has an abscess or collections >2 cm.
- The participant who has rectal and/or anal stenosis and/or active proctitis, which would restrict the surgical procedure.
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- The participant who underwent surgery other than drainage or seton placement for the to be treated fistula.
- The participant who has diverting stomas.
- The participant who was treated with systemic steroids in the 4 weeks prior to study product administration.
- The participant receiving cytapheresis therapy.
- The participant who requires new treatment with immunosuppressants/biologics/non-tapered systematic steroids during the screening period.
- The participant who has renal impairment defined by creatinine clearance below 60 mL/minute calculated using Cockcroft-Gault formula or by serum creatinine >=1.5 × upper limit of normal (ULN).
- The participant who has hepatic impairment defined by both total bilirubin >=1.5 × ULN, and aspartate aminotransferase (AST) and alanine aminotransferase (ALT) >=2.5 × ULN.
- The participant who has history of abuse of alcohol or other addictive substances in the 6 months prior to the screening period.
- The participant who has malignant tumour or who has a history of malignant tumour, including any type of fistula carcinoma.
- The participant who has abnormal, severe, progressive, uncontrolled hepatic, hematological, gastrointestinal (except Crohn's disease), endocrine, pulmonary, cardiac, neurological, psychiatric, or cerebral disease, or the participant who developed any of the above diseases within 3 months prior to the screening period.
- The participant who has congenital or acquired immunodeficiency, including participants known to be Human Immunodeficiency Virus (HIV) carriers.
- The participant who has clinically significant chronically active hepatopathy of any origin, including hepatic cirrhosis, and participants who is persistent positive for hepatitis B virus (HBV) surface antigen (HBsAg) and quantitative HBV polymerase chain reaction (PCR), or positive serology for hepatitis C virus (HCV) and quantitative HCV-PCR within 6 months prior to the screening period.
- The participant who has known allergies or hypersensitivity to antibiotics (including but not limited to penicillin, streptomycin, gentamicin, aminoglycosides), Human Serum Albumin (HSA), bovine-derived materials, local anesthetics or gadolinium (MRI contrast agent).
- The participant for whom MRI scan is contraindicated (eg, due to the presence of a pacemaker, a history of hip replacements, or severe claustrophobia).
- The participant who has major surgery (eg, surgery under general anesthesia, laparotomy, thoracotomy, craniotomy) or severe trauma within 6 months prior to the screening period.
- The female participant who is pregnant, or is lactating.
- The participant who has received any investigational drug within 12 weeks (84 days) prior to the screening.
- The participant who has received expanded allogeneic adipose-derived stem cells (eASC) in a previous clinical study or as a therapeutic agent.
- The participant who needs perianal surgery other than fistulas preparation required by the protocol during the screening, or the participant who will receive a perianal surgery within 24 weeks after study product administration.
- The participant for whom anesthesia is contraindicated.
- The participant who received excluded medications or treatment.
Trial locations and contacts
11 sites in 1 country.
11 sites in 1 country
Japan11 sites
Fukuoka University Chikushi Hospital
Chikushino-shi, Fukuoka
Coloproctology Center Takano Hospital
Kumamoto
Hyogo College of Medicine
Nishinomiya, Hyōgo
Sapporo Higashi Tokushukai Hospital
Sapporo, Hokkaido
Tohoku Rosai Hospital
Sendai, Miyagi
Tohoku University Hospital
Sendai, Miyagi
JCHO Tokyo Yamate Medical Center
Shinjuku, Tokyo
Osaka University Hospital
Suita, Osaka
Ieda Hospital
Toyota, Aichi-ken
Mie University Hospital
Tsu, Mie-ken
Yokohama Municipal Citizen's Hospital
Yokohama, Kanagawa
About this study
Official title: A Phase 3, Multicenter, Open-Label, Uncontrolled Study to Evaluate the Efficacy and Safety of Cx601 in the Treatment of Complex Perianal Fistulas in Adult Patients With Crohn's Disease
The purpose of this study is to evaluate the efficacy of darvadstrocel for the treatment of complex perianal fistulas in adult participants with Crohn's disease over 24 weeks.
Read the detailed description
The drug being tested in this study is called Darvadstrocel (Cx601). This study will assess the efficacy for 24 and 52 weeks, and safety for 156 weeks of darvadstrocel when administered with intralesional injection in adult participants with Crohn's disease whose complex perianal fistulas were previously treated and refractory.
The study enrolled 22 participants. All participants who will meet the criteria will be assigned to screening period for approximately 5 weeks and after that will be enrolled the treatment period which will be the day of study product administration. After the treatment period, this study will include the follow-up period for approximately 52 weeks after study product administration, and the long-term follow-up period from Week 52 to Week 156.
This multi-center trial will be conducted in Japan. The overall time to participate is totally approximately 156 weeks (3 years) from the start of treatment period plus follow-up and long-term follow-up period. Participants will make multiple visits to the clinic and a final visit 156 weeks after treatment of study product for a follow-up assessment.
- Being tested
- Darvadstrocel
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
DarvadstrocelBiological
Also called Cx601
Darvadstrocel cell suspension for intralesional injection.
| Study group | Role | What they receive |
|---|---|---|
| Darvadstrocel 24 mL | Experimental | Darvadstrocel (Cx601) 24 mL suspension of 120 million cells of expanded allogeneic adipose-derived stem cells (eASC) as an intralesional injection, once on Day 1. Receives: Biological: Darvadstrocel |
What is being measured
The primary outcome is the main question the study is designed to answer.
Percentage of Participants With Combined Remission of Perianal Fistulising Crohn's Disease (CD) at Week 24
Combined remission of perianal fistulising CD is defined as the clinically confirmed closure of all treated external openings that were draining at Screening despite gentle finger compression, and absence of collections >2 cm in the treated fistulas, confirmed by central magnetic resonance imaging (MRI) assessment at Week 24 visit. In case of missing values, last observation carried forward (LOCF) method was applied. Percentages are rounded off to the nearest decimal point.
Measured: Week 24
Secondary outcomes (24)
Percentage of Participants With Clinical Remission of Perianal Fistulising CD at Week 24
Clinical remission of perianal fistulising CD is defined as the clinically confirmed closure of all treated external openings that were draining at Screening despite gentle finger compression at Week 24 Visit. In case of missing values, LOCF method was applied. Percentages are rounded off to the nearest decimal point.
Measured: Week 24
Percentage of Participants With Response of Perianal Fistulising CD at Week 24
Response of perianal fistulising CD is defined as the clinically confirmed closure of at least 50 percent of all treated external openings that were draining at Screening despite gentle finger compression at Week 24 visit. In case of missing values, LOCF method was applied. Percentages are rounded off to the nearest decimal point.
Measured: Week 24
Time to Clinical Remission of Perianal Fistulising CD by Week 24
Time to clinical remission is defined as the time from the study product administration to the first visit by which clinical remission is observed. Clinical remission is defined as the clinically confirmed closure of all treated external openings that were draining at Screening despite gentle finger compression.
Measured: Up to Week 24
Time to Response of Perianal Fistulising CD by Week 24
Time to response is defined as the time from the study product administration to the first visit by which response is observed. Response is defined as the clinically confirmed closure of at least 50 percent of all treated external openings that were draining at Screening despite gentle finger compression.
Measured: Up to Week 24
Percentage of Participants With Relapse of Perianal Fistulising CD at Week 24 in Participants With Clinical Remission at a Previous Visit
Relapse is defined as the clinically confirmed reopening of any of the treated external openings with active drainage, or the development of a collection >2 cm in the treated fistulas confirmed by central MRI assessment in participants who achieved clinical remission before Week 24. LOCF method was applied. Percentages are rounded off to the nearest decimal point.
Measured: Week 24
Time to Relapse of Perianal Fistulising CD by Week 24 in Participants With Clinical Remission at a Previous Visit
Time to Relapse is defined as the time from the first visit by which clinical remission is observed to the first visit by which relapse is observed. Relapse is defined as the clinically confirmed reopening of any of the treated external openings with active drainage, or the development of a collection >2 cm in the treated fistulas confirmed by central MRI assessment.
Measured: Up to Week 24
Change From Baseline in Perianal Disease Activity Index (PDAI): Total Score at Week 24
The PDAI is a scoring system to evaluate the severity of perianal lesion associated with Crohn's disease. It includes the following 5 items: (a) Discharge; (b) Pain; (c) Restriction of sexual activity; (d) Type of perianal disease; and (e) Degree of induration. Each item is graded on a 5-point scale where 0 indicates no symptoms and 4 indicates severe symptoms and total range of score is from 0 to 20. Higher score indicates more severe disease. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 24
Change From Baseline in PDAI: Discharge Sub-Score at Week 24
The PDAI is a scoring system to evaluate the severity of perianal lesion associated with Crohn's disease. It includes the following 5 items: (a) Discharge; (b) Pain; (c) Restriction of sexual activity; (d) Type of perianal disease; and (e) Degree of induration. The discharge item is graded on a 5-point scale where 0 indicates no symptoms and 4 indicates severe symptoms and total range of score is from 0 to 4. Higher score indicates more severe disease. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 24
Change From Baseline in PDAI: Pain Sub-Score at Week 24
The PDAI is a scoring system to evaluate the severity of perianal lesion associated with Crohn's disease. It includes the following 5 items: (a) Discharge; (b) Pain; (c) Restriction of sexual activity; (d) Type of perianal disease; and (e) Degree of induration. The pain item is graded on a 5-point scale where 0 indicates no symptoms and 4 indicates severe symptoms and total range of score is from 0 to 4. Higher score indicates more severe disease. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 24
Change From Baseline in Crohn's Disease Activity Index (CDAI): Total Score at Week 24
CDAI score is calculated from the following 8 items: (a) Number of liquid or very soft stools; (b) Abdominal pain; (c) General wellbeing; (d) Extraintestinal complications; (e) Antidiarrhoeal drugs; (f) Abdominal mass; (g) Hematocrit; and (h) Body weight. Scores of some items in CDAI are calculated based on patient diary. Total score ranges from 0 to 600. Higher score means more severe disease and especially severe disease was defined as a value of greater than 450. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 24
Change From Baseline in Van Assche Score at Week 24
The Van Assche score represents the magnetic resonance imaging (MRI)- based severity of perianal lesion associated with Crohn's disease. Based on MRI data, the number, location and extension of fistula tracts, hyperintensity on T2-weighted images, presence or absence of collections (cavities >3 mm in diameter), and rectal wall involvement will be evaluated. The score range was from 0 to 22. Higher score means more severe disease. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 24
Percentage of Participants With Combined Remission of Perianal Fistulising CD at Week 52
Combined remission is defined as the clinically confirmed closure of all treated external openings that were draining at the screening despite gentle finger compression, and absence of collections >2 cm in the treated fistulas which is confirmed by the central MRI assessment at Week 52 visit. In case of missing values, LOCF method was applied. Percentages are rounded off to the nearest decimal point.
Measured: Week 52
Percentage of Participants With Clinical Remission of Perianal Fistulising CD at Week 52
Clinical remission is defined as the clinically confirmed closure of all treated external openings that were draining at screening despite gentle finger compression at Week 52 visit. In case of missing values, LOCF method was applied. Percentages are rounded off to the nearest decimal point.
Measured: Week 52
Percentage of Participants With Response of Perianal Fistulising CD at Week 52
Response is defined as the clinically confirmed closure of at least 50 percent of all treated external openings that were draining at the screening despite gentle finger compression at Week 52 visit. In case of missing values, LOCF method was applied. Percentages are rounded off to the nearest decimal point.
Measured: Week 52
Time to Combined Remission of Perianal Fistulising CD by Week 52
Time to combined remission is defined as the time from the study product administration to the first visit by which combined remission is observed. Combined remission is defined as the clinically confirmed closure of all treated external openings that were draining at the screening despite gentle finger compression, and absence of collections >2 cm in the treated fistulas which is confirmed by the central MRI assessment.
Measured: Up to Week 52
Time to Clinical Remission of Perianal Fistulising CD by Week 52
Time to clinical remission is defined as the time from the study product administration to the first visit by which clinical remission is observed. Clinical remission is defined as the clinically confirmed closure of all treated external openings that were draining at Screening despite gentle finger compression.
Measured: Up to Week 52
Time to Response of Perianal Fistulising CD by Week 52
Time to response is defined as the time from the study product administration to the first visit by which response is observed. Response is defined as the clinically confirmed closure of at least 50 percent of all treated external openings that were draining at the Screening despite gentle finger compression.
Measured: Up to Week 52
Percentage of Participants With Relapse of Perianal Fistulising CD at Week 52 in Participants With Combined Remission at Week 24
Relapse is defined as the clinically confirmed reopening of any of the treated external openings with active drainage, or the development of a collection >2 cm in the treated fistulas confirmed by central MRI assessment in participants who achieved combined remission at Week 24. Combined remission is defined as the clinically confirmed closure of all treated external openings that were draining at Screening despite gentle finger compression, and absence of collections >2 cm in the treated fistulas, confirmed by the central MRI assessment. LOCF method was applied. Percentages are rounded off to the nearest decimal point.
Measured: Week 52
Time to Relapse of Perianal Fistulising CD by Week 52 in Participants With Combined Remission at Week 24
Time to relapse by Week 52 in participants who achieved combined remission at Week 24 is defined as the time from the combined remission at Week 24 to the first visit by which relapse is observed. Relapse is defined as the clinically confirmed reopening of any of the treated external openings with active drainage, or the development of a collection >2 cm in the treated fistulas confirmed by central MRI assessment in participants who achieved combined remission at Week 24. Combined remission is defined as the clinically confirmed closure of all treated external openings that were draining at Screening despite gentle finger compression, and absence of collections >2 cm in the treated fistulas, confirmed by the central MRI assessment.
Measured: Up to Week 52
Change From Baseline in PDAI: Total Score at Week 52
The PDAI is a scoring system to evaluate the severity of perianal lesion associated with Crohn's disease. It includes the following 5 items: (a) Discharge; (b) Pain; (c) Restriction of sexual activity; (d) Type of perianal disease; and (e) Degree of induration. Each item is graded on a 5-point scale ranging from no symptoms (score of 0) to severe symptoms (score of 4) and total range of score is from 0 to 20. Higher score indicates more severe disease. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 52
Change From Baseline in PDAI: Discharge Sub-Score at Week 52
The PDAI is a scoring system to evaluate the severity of perianal lesion associated with Crohn's disease. It includes the following 5 items: (a) Discharge; (b) Pain; (c) Restriction of sexual activity; (d) Type of perianal disease; and (e) Degree of induration. The discharge item is graded on a 5-point scale ranging from no symptoms (score of 0) to severe symptoms (score of 4) and total range of score is from 0 to 20. Higher score indicates more severe disease. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 52
Change From Baseline in PDAI: Pain Sub-Score at Week 52
The PDAI is a scoring system to evaluate the severity of perianal lesion associated with Crohn's disease. It includes the following 5 items: (a) Discharge; (b) Pain; (c) Restriction of sexual activity; (d) Type of perianal disease; and (e) Degree of induration. The pain item is graded on a 5-point scale ranging from no symptoms (score of 0) to severe symptoms (score of 4) and total range of score is from 0 to 20. Higher score indicates more severe disease. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 52
Change From Baseline in CDAI: Total Score at Week 52
CDAI score is calculated from the following 8 items: (a) Number of liquid or very soft stools; (b) Abdominal pain; (c) General wellbeing; (d) Extraintestinal complications; (e) Antidiarrhoeal drugs; (f) Abdominal mass; (g) Hematocrit; and (h) Body weight. Scores of some items in CDAI are calculated based on patient diary. Total score ranges from 0 to 600. Higher score indicates more severe disease and especially severe disease was defined as a value of greater than 450. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 52
Change From Baseline in Van Assche Total Score at Week 52
The Van Assche score represents the MRI-based severity of perianal lesion associated with Crohn's disease. Based on MRI data, the number, location and extension of fistula tracts, hyperintensity on T2-weighted images, presence or absence of collections (cavities >3 mm in diameter), and rectal wall involvement will be evaluated. The total score ranges from 0 to 22. Higher score indicates more severe disease. Negative change from Baseline indicates improvement.
Measured: Baseline and Week 52
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Oct 2018
- Study start6 Mar 2019
- Primary completion20 Jul 2020
- Study completion10 Feb 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Complex Perianal Fistulas in Adult Participants With Crohn's DiseaseStudies of the same condition, open and under way.
- More trials run by TakedaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 22 participants (actual)
Sponsor and investigators
- Lead sponsor
- Takeda
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Study Director, Study director, Takeda
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03706456
- Sponsor's protocol ID
- Darvadstrocel-3002
- Other IDs
- U1111-1218-8079, JapicCTI-184145, Alofisel-3002
- Status last verified
- Jun 2024
- First submitted
- 11 Oct 2018
- Last updated
- 10 Jun 2024
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Takeda provides access to the de-identified individual participant data (IPD) for eligible studies to aid qualified researchers in addressing legitimate scientific objectives (Takeda's data sharing commitment is available on https://clinicaltrials.takeda.com/takedas-commitment?commitment=5). These IPDs will be provided in a secure research environment following approval of a data sharing request, and under the terms of a data sharing agreement.
Publications
Mizushima T, Furukawa S, Sahara R, Ohta A, Okita Y, Ito T, Ikeuchi H, Higashi D, Sugita A, Takahashi K, Ogino T, Kiryu S, Nakaya R, Narii N, Yamaguchi T, Watanabe K, Futami K. Long-term safety and efficacy of darvadstrocel for complex perianal fistulas in Japanese adults with Crohn's disease: 3-year follow-up results. Crohns Colitis 360. 2026 Aug 18;8(3):otag090. doi: 10.1093/crocol/otag090. eCollection 2026 Jul.
PubMed 42812859Furukawa S, Mizushima T, Nakaya R, Shibata M, Yamaguchi T, Watanabe K, Futami K. Darvadstrocel for Complex Perianal Fistulas in Japanese Adults with Crohn's Disease: A Phase 3 Study. J Crohns Colitis. 2023 Apr 3;17(3):369-378. doi: 10.1093/ecco-jcc/jjac144.
PubMed 36149832
Study at a glance
From the registry record, last updated by the sponsor on 10 Jun 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 3, Multicenter, Open-Label, Uncontrolled Study to Evaluate the Efficacy and Safety of Cx601 in the Treatment of Complex Perianal Fistulas in Adult Patients With Crohn's Disease
- ClinicalTrials.gov ID
- NCT03706456
- Acronym / sponsor ID
- Darvadstrocel-3002
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 22 participants (actual)
- Lead sponsor
- TakedaIndustry (pharma, biotech, devices)
- Study start
- 6 Mar 2019 (actual)
- Primary completion
- 20 Jul 2020 (actual)
- Study completion
- 10 Feb 2023 (actual)
- First posted
- 16 Oct 2018 (actual)
- Results
- Posted 7 Oct 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to evaluate the efficacy of darvadstrocel for the treatment of complex perianal fistulas in adult participants with Crohn's disease over 24 weeks.
Detailed description
The drug being tested in this study is called Darvadstrocel (Cx601). This study will assess the efficacy for 24 and 52 weeks, and safety for 156 weeks of darvadstrocel when administered with intralesional injection in adult participants with Crohn's disease whose complex perianal fistulas were previously treated and refractory.
The study enrolled 22 participants. All participants who will meet the criteria will be assigned to screening period for approximately 5 weeks and after that will be enrolled the treatment period which will be the day of study product administration. After the treatment period, this study will include the follow-up period for approximately 52 weeks after study product administration, and the long-term follow-up period from Week 52 to Week 156.
This multi-center trial will be conducted in Japan. The overall time to participate is totally approximately 156 weeks (3 years) from the start of treatment period plus follow-up and long-term follow-up period. Participants will make multiple visits to the clinic and a final visit 156 weeks after treatment of study product for a follow-up assessment.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Darvadstrocel 24 mL | Experimental | Biological: DarvadstrocelDarvadstrocel (Cx601) 24 mL suspension of 120 million cells of expanded allogeneic adipose-derived stem cells (eASC) as an intralesional injection, once on Day 1. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (15 listed)
- In the opinion of the investigator, the participant is capable of understanding and complying with the protocol requirements.
- The participant or, when applicable, the participant's legally acceptable representative signs and dates a written, informed consent form and any required privacy authorization prior to the initiation of any study procedures.
- The participant who was diagnosed with Crohn's disease at least 6 months prior to the screening period according to the Diagnostic Criteria for Crohn's Disease issued by Research Group for Intractable Inflammatory Bowel Disease Designated as Specified Disease by the Ministry of Health, Labour and Welfare (MHLW) of Japan (revised January 2017).
- The participant is either a male or female outpatient, aged 18 years or older at the time of signing the informed consent form.
- The participant who has non-active or mildly active Crohn's disease defined by the Crohn's disease activity index (CDAI) =<220 evaluated at any time between Visit 1 and Visit 2.
Key exclusion criteria (27 listed)
- The participant whose CDAI is >220 at any time between Visit 1 and Visit 2, or who has active Crohn's disease requiring a new of escalating immediate therapy.
- The participant who has concomitant rectovaginal or rectovesical fistulas.
- The participant who has >2 internal openings of >3 external openings.
- The participant who is naïve to protocol required treatment for complex perianal fistulising Crohn's disease (ie, antibiotics, immunosuppressants or biologics).
- The participant who has an abscess or collections >2 cm.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| DarvadstrocelAlso: Cx601Darvadstrocel cell suspension for intralesional injection. | Biological | Darvadstrocel 24 mL |
Primary outcome
Percentage of Participants With Combined Remission of Perianal Fistulising Crohn's Disease (CD) at Week 24
Time frame: Week 24
Combined remission of perianal fistulising CD is defined as the clinically confirmed closure of all treated external openings that were draining at Screening despite gentle finger compression, and absence of collections >2 cm in the treated fistulas, confirmed by central magnetic resonance imaging (MRI) assessment at Week 24 visit. In case of missing values, last observation carried forward (LOCF) method was applied. Percentages are rounded off to the nearest decimal point.
24 secondary outcomes
Percentage of Participants With Clinical Remission of Perianal Fistulising CD at Week 24
Time frame: Week 24
Percentage of Participants With Response of Perianal Fistulising CD at Week 24
Time frame: Week 24
Time to Clinical Remission of Perianal Fistulising CD by Week 24
Time frame: Up to Week 24
Time to Response of Perianal Fistulising CD by Week 24
Time frame: Up to Week 24
Percentage of Participants With Relapse of Perianal Fistulising CD at Week 24 in Participants With Clinical Remission at a Previous Visit
Time frame: Week 24
Time to Relapse of Perianal Fistulising CD by Week 24 in Participants With Clinical Remission at a Previous Visit
Time frame: Up to Week 24
Change From Baseline in Perianal Disease Activity Index (PDAI): Total Score at Week 24
Time frame: Baseline and Week 24
Change From Baseline in PDAI: Discharge Sub-Score at Week 24
Time frame: Baseline and Week 24
Change From Baseline in PDAI: Pain Sub-Score at Week 24
Time frame: Baseline and Week 24
Change From Baseline in Crohn's Disease Activity Index (CDAI): Total Score at Week 24
Time frame: Baseline and Week 24
Change From Baseline in Van Assche Score at Week 24
Time frame: Baseline and Week 24
Percentage of Participants With Combined Remission of Perianal Fistulising CD at Week 52
Time frame: Week 52
Percentage of Participants With Clinical Remission of Perianal Fistulising CD at Week 52
Time frame: Week 52
Percentage of Participants With Response of Perianal Fistulising CD at Week 52
Time frame: Week 52
Time to Combined Remission of Perianal Fistulising CD by Week 52
Time frame: Up to Week 52
Time to Clinical Remission of Perianal Fistulising CD by Week 52
Time frame: Up to Week 52
Time to Response of Perianal Fistulising CD by Week 52
Time frame: Up to Week 52
Percentage of Participants With Relapse of Perianal Fistulising CD at Week 52 in Participants With Combined Remission at Week 24
Time frame: Week 52
Time to Relapse of Perianal Fistulising CD by Week 52 in Participants With Combined Remission at Week 24
Time frame: Up to Week 52
Change From Baseline in PDAI: Total Score at Week 52
Time frame: Baseline and Week 52
Change From Baseline in PDAI: Discharge Sub-Score at Week 52
Time frame: Baseline and Week 52
Change From Baseline in PDAI: Pain Sub-Score at Week 52
Time frame: Baseline and Week 52
Change From Baseline in CDAI: Total Score at Week 52
Time frame: Baseline and Week 52
Change From Baseline in Van Assche Total Score at Week 52
Time frame: Baseline and Week 52
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Jun 2024.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 42812859Mizushima T, Furukawa S, Sahara R, Ohta A, Okita Y, Ito T, Ikeuchi H, Higashi D, Sugita A, Takahashi K, Ogino T, Kiryu S, Nakaya R, Narii N, Yamaguchi T, Watanabe K, Futami K. Long-term safety and efficacy of darvadstrocel for complex perianal fistulas in Japanese adults with Crohn's disease: 3-year follow-up results. Crohns Colitis 360. 2026 Aug 18;8(3):otag090. doi: 10.1093/crocol/otag090. eCollection 2026 Jul.
- Derived from this study: PubMed 36149832Furukawa S, Mizushima T, Nakaya R, Shibata M, Yamaguchi T, Watanabe K, Futami K. Darvadstrocel for Complex Perianal Fistulas in Japanese Adults with Crohn's Disease: A Phase 3 Study. J Crohns Colitis. 2023 Apr 3;17(3):369-378. doi: 10.1093/ecco-jcc/jjac144.
- To obtain more information on the study, click here/on this linkLink provided by the sponsor.
- Individual participant dataSharing planned: Yes. Takeda provides access to the de-identified individual participant data (IPD) for eligible studies to aid qualified researchers in addressing legitimate scientific objectives (Takeda's data sharing commitment is available on https://clinicaltrials.takeda.com/takedas-commitment?commitment=5). These IPDs will be provided in a secure research environment following approval of a data sharing request, and under the terms of a data sharing agreement.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Study Director study director
Takeda
11 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Darvadstrocel in people with Complex Perianal Fistulas in Adult Participants With Crohn's Disease, run by Takeda at 11 sites in Japan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 15 inclusion and 27 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 10 Jun 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 11 sites in Japan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 7 Oct 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Percentage of Participants With Combined Remission of Perianal Fistulising Crohn's Disease (CD) at Week 24 (time frame: Week 24). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03706456, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Jun 2024.