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Evaluation of Local Co-administration of Autologous ADIpose Derived Stromal Vascular Fraction With Microfat for Refractory Perianal CROHN's Fistulas. (ADICROHN2)

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ClinicalTrials.gov Identifier: NCT04010526
Recruitment Status : Not yet recruiting
First Posted : July 8, 2019
Last Update Posted : July 8, 2019
Sponsor:
Information provided by (Responsible Party):
Assistance Publique Hopitaux De Marseille

Brief Summary:

Autologous ADSVF constitutes an innovative therapeutic strategy that concentrates various types of regenerative stem cells and paracrine factors able to promote angiogenesis and tissue repair. Together with the ease of collection from a minimally manipulated lipoaspirate, the unique properties of ADSVF offer new opportunities for fistulas' healing in patients with CD. The use of ADSVF is currently developed in many clinical fields based on safety and efficacy data.

Our ADICROHN pilot study evaluating safety and tolerance of local administration of autologous ADSVF with microfat in CD patients with complex perianal fistula refractory to conventional medical and surgical therapy showed that this novel therapeutic approach appears feasible and safe.

However the therapeutic potential of local this combined treatment in healing refractory perianal Crohn's fistulas still remains to be demonstrated.

The main objective of this study is to assess the efficacy of local injection of autologous ADSVF and microfat versus placebo for the treatment of complex refractory perianal Crohn's fistulas at week 24.

The efficacy will be assessed on clinical assessment of closure of all the external openings that were drained at baseline, and MRI confirmation of absence of collections > 2 cm of the treated perianal fistulas at week 24.


Condition or disease Intervention/treatment Phase
Crohn Disease Combination Product: local co-administration of autologous ADIpose Other: placebo Phase 2

Detailed Description:

Autologous ADSVF constitutes an innovative therapeutic strategy that concentrates various types of regenerative stem cells and paracrine factors able to promote angiogenesis and tissue repair. Together with the ease of collection from a minimally manipulated lipoaspirate, the unique properties of ADSVF offer new opportunities for fistulas' healing in patients with CD. The use of ADSVF is currently developed in many clinical fields based on safety and efficacy data.

Our ADICROHN pilot study evaluating safety and tolerance of local administration of autologous ADSVF with microfat in CD patients with complex perianal fistula refractory to conventional medical and surgical therapy showed that this novel therapeutic approach appears feasible and safe.

However the therapeutic potential of local this combined treatment in healing refractory perianal Crohn's fistulas still remains to be demonstrated.

B. Primary objective/endpoint The main objective of this study is to assess the efficacy of local injection of autologous ADSVF and microfat versus placebo for the treatment of complex refractory perianal Crohn's fistulas at week 24 (W24), The efficacy will be assessed on clinical assessment of closure (despite gentle finger compression) of all the external openings that were drained at baseline, and MRI confirmation of absence of collections > 2 cm of the treated perianal fistulas at week 24.


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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 84 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Other
Official Title: Double-blind Randomised Placebo Controlled Study Evaluating Local Co-administration of Autologous ADIpose Derived Stromal Vascular Fraction With Microfat for Refractory Perianal CROHN's Fistulas.
Estimated Study Start Date : July 2019
Estimated Primary Completion Date : July 2021
Estimated Study Completion Date : October 2021

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Fistulas

Arm Intervention/treatment
Experimental: treatment
CD patients with complex refractory perianal fistula refractory to conventional medical and surgical therapy referred to the gastroenterology departments of the 3 centers in charge of treatment local co-administration of autologous ADIpose will be performed
Combination Product: local co-administration of autologous ADIpose
local co-administration of autologous ADIpose derived stromal vascular fraction and microfat for refractory perianal CROHN's fistulas Each batch of the final product is composed of one 5 mL syringes containing 25,9 +/- 10,7 millions viable cells. Each syringe will be obstructed with a sterile stopper and packaged in an external packaging.

Placebo Comparator: placebo
CD patients with complex refractory perianal fistula refractory to conventional medical and surgical therapy referred to the gastroenterology departments of the 3 centers in charge of treatment local co-administration of placebo will be performed
Other: placebo
local co-administration of placebo The study placebo will consist of a saline solution for intralesional administration and will follow the same administration schema described for the SFV




Primary Outcome Measures :
  1. clinically evaluated [ Time Frame: 24 weeks (w) ]
    number of fistula closure

  2. Magnetic resonance imaging (MRI) [ Time Frame: weeks 24 ]
    confirmation of absence of collections > 2 cm of the treated perianal fistulas

  3. Magnetic resonance imaging (MRI) [ Time Frame: weeks 52 ]
    confirmation of absence of collections > 2 cm of the treated perianal fistulas


Secondary Outcome Measures :
  1. a complete cessation of suppuration [ Time Frame: weeks4, weeks12, weeks24, weeks52 ]
  2. closure of all the external openings [ Time Frame: weeks4, weeks12 ]
  3. Index PDAI (Perianal Disease Activity ) [ Time Frame: weeks4, weeks12, weeks24 and weeks52 ]
  4. improvement of Quality of Life Short Inflammatory Bowel Disease Questionnaire (SIBDQ) (QoL) [ Time Frame: weeks4, weeks12, weeks24 and weeks52 ]
  5. Crohn's Disease Activity Index (CDAI) [ Time Frame: weeks4, weeks12, weeks24 and weeks52 ]
  6. Reduction of anal incontinence severity (Wexner score) [ Time Frame: weeks4, weeks12, weeks24 and weeks52 ]


Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Signed informed consent
  • Patients with Crohn's Disease (CD) diagnosed at least 6 months earlier in accordance with accepted clinical, endoscopic, histological and/or radiologic criteria
  • Presence of refractory complex perianal fistulas assessed by clinical assessment during examination under anaesthesia (preparation treatment) and MRI.
  • Non-active or mildly active luminal CD defined by a CDAI ≤ 220
  • Patients of either sex aged 18 years or older
  • Good general state of health according to clinical history and a physical examination
  • For women of a childbearing age, they must have negative serum or urine pregnancy test (sensitive to 25 IU human chorionic gonadotropin [hCG]). Both men and women should use appropriate birth control methods defined by the investigator.

Exclusion Criteria:

  • Presence of dominant luminal active Crohn's disease requiring immediate therapy
  • CDAI > 220
  • Patient naïve to specific treatment for perianal fistulising Crohn's disease
  • Presence of an abscess or collections > 2 cm, unless resolved in the preparation procedure
  • Rectal and/or anal stenosis if this means a limitation for any surgical procedure
  • Patient with ongoing steroid treatment or treated with steroids in the last 4 weeks
  • Malignant tumour or patients with a prior history of any malignant tumour, including any type of fistula carcinoma
  • Current or recent history of abnormal, severe, progressive, uncontrolled infectious, hepatic, haematological, gastrointestinal (except CD), endocrine, pulmonary, cardiac, neurological, psychiatric, or cerebral disease
  • Congenital or acquired immunodeficiencies
  • Contraindication to local anaesthetics or gadolinium (MRI contrast)
  • Contraindication to MRI scan, (e.g., due to the presence of pacemakers, hip replacements or severe claustrophobia)
  • Pregnant or breastfeeding women
  • Contraindication to the anaesthetic or surgical procedure
  • BMI < 18 to insure adequate abdominal or other subcutaneous adipose tissue accessible by lipoharvest
  • Any active viral infection follows: HIV, HTLV I et II, VHB, VHC and Syphillis

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04010526


Contacts
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Contact: JEAN CHARLES GRIMAUD, MD +33491368739 Jean-charles.GRIMAUD@ap-hm.fr

Locations
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France
Assistance Publique Des Hopitaux de Marseille Not yet recruiting
Marseille, Paca, France, 13354
Contact: JEAN CHARLES GRIMAUD, MD    +33491368739    Jean-charles.GRIMAUD@ap-hm.fr   
Sponsors and Collaborators
Assistance Publique Hopitaux De Marseille
Investigators
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Study Director: EMILIE GARRIDO PRADALIE APHM

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Responsible Party: Assistance Publique Hopitaux De Marseille
ClinicalTrials.gov Identifier: NCT04010526     History of Changes
Other Study ID Numbers: RCAPHM18_0013
First Posted: July 8, 2019    Key Record Dates
Last Update Posted: July 8, 2019
Last Verified: July 2019

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No

Additional relevant MeSH terms:
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Crohn Disease
Fistula
Inflammatory Bowel Diseases
Gastroenteritis
Gastrointestinal Diseases
Digestive System Diseases
Intestinal Diseases
Pathological Conditions, Anatomical