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Anthocyanin Rich Extract (ACRE) in Patients With Ulcerative Colitis (ACRE)

Primary Purpose

Ulcerative Colitis

Status
Completed
Phase
Phase 2
Locations
Switzerland
Study Type
Interventional
Intervention
Standardized anthocyanin-rich extract
Placebo
Sponsored by
University of Zurich
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Ulcerative Colitis focused on measuring bilberry, anthocyanin, anthocyanin-rich extract, ulcerative colitis

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  1. Male or female ≥ 18 years of age
  2. Established diagnosis of UC, with minimum time from diagnosis of ≥3 months
  3. Moderately at least left sided UC (disease should extend 15 cm or more above the anal verge). Disease severity determined by a Modified Mayo score of 6 to 12 with an endoscopic sub score ≥2 assessed by central reading of endoscopy performed at screening visit and no other individual sub score <1 (see 9.8.2 for more detailed information)
  4. Current oral or rectal 5-ASA/SP use or a history of oral or rectal 5-ASA/SP use
  5. Current steroids use or history of steroids dependency, refractory, or intolerance, including no steroids treatment due to earlier side-effects (only one of the steroids criteria have to be fulfilled, see definition in European Crohn´s and Colitis organization (ECCO) guidelines)
  6. One of the following points must be fulfilled:

    1. Active disease despite induction therapy with 5-ASA agents where adequate therapy is considered with an oral 5-ASA (mesalamine 2- 4.8 g/day, sulfasalazine 4-6 g/day) administered for at least 2 weeks. Topical treatment with 5-ASA may have been attempted but this is not a prerequisite for inclusion in the study OR
    2. Intolerance to oral 5-ASAs or azathioprine OR
    3. Active disease despite a thiopurine (adequately dosed according to treatment guidelines, such as 2-3 mg/kg for azathioprine) or methotrexate administered for at least 12 weeks.
  7. Allowed to receive a therapeutic dose of following UC drugs during the study:

    1. Oral steroids therapy (≤30 mg prednisone or equivalent/daily) providing that the dose has been stable for 2 weeks prior Baseline
    2. Oral or rectal MMX Budesonide therapy (9mg/daily) initiated and a stable dose at least 2 months before Baseline
    3. Oral or rectal 5-ASA/SP compounds, providing that the dose has been stable for 2 months prior to Baseline and initiated at least 8 weeks before screening.
    4. AZA/6-MP providing that the dose has been stable for 8 weeks prior to Baseline and been initiated at least 2 months before screening
    5. TNF inhibitors (Infliximab, Adalimumab or Golimumab) are allowed, providing that the dose is stable for at least 2 months prior to baseline and during the study treatment period
    6. Vedolizumab and Tofacitinib is allowed providing that the dose is stable for at least 2 months prior to baseline and during the study treatment period
  8. Ability to understand the treatment, willingness to comply with all study requirements and ability to provide informed consent

Exclusion Criteria:

Subjects fulfilling any of the following criteria are not eligible for inclusion in this study:

  1. Suspicion of differential diagnosis such as; Crohn's enterocolitis, ischaemic colitis, radiation colitis, indeterminate colitis, infectious colitis, diverticular disease, associated colitis, microscopic colitis, massive pseudopolyposis or non-passable stenosis
  2. Acute fulminant UC and/or signs of systemic toxicity
  3. UC limited to the rectum (disease which extends <15 cm above the anal verge)
  4. History of malignancy, except for:

    1. Treated (cured) basal cell or squamous cell in situ carcinoma
    2. Treated (cured) cervical intraepithelial neoplasia or
    3. carcinoma in situ of the cervix with no evidence of recurrence within the previous 5 years prior to the screening visit
  5. History or presence of any clinically significant disorder that, in opinion of the investigator, could impact on patient's possibility to adhere to the protocol and protocol procedures or would confound the study result or compromise patient safety
  6. Long term treatment with antibiotics or non-steroidal anti-inflammatory drugs (NSAIDs) within two weeks prior to screening (one short treatment regime for antibiotics and occasional use of NSAIDS are allowed)
  7. Serious active infection
  8. Gastrointestinal infections including positive Clostridium difficile stool assay
  9. Currently receiving parenteral nutrition or blood transfusions
  10. Females who are lactating or have a positive serum pregnancy test during the screening period
  11. Concurrent participation in another clinical study with investigational therapy or previous use of investigational therapy within 5 half-lives and within at least 30 days after last treatment of the experimental product prior to enrolment
  12. Subjects who have been treated with

    a. A dose of ≥ 1 mg per kg body weight prednisone or ≥30mg/d in the last 4 weeks prior to randomization.

  13. Ongoing treatment with cyclosporine or tacrolimus. Eligible subjects must have stopped cyclosporine and/or tacrolimus at least 4 weeks and antibiotics at least 1 week prior to randomization.
  14. known history of alcohol abuse, chronic liver or biliary disease
  15. Repeated and confirmed laboratory findings showing:

    1. total bilirubin greater than 2 x upper limit of the normal range (ULN) unless in context of Gilbert's syndrome
    2. alkaline phosphatase (AP) greater than 2 x ULN
    3. ALT (SGPT) greater than 2 x ULN
    4. serum creatinine greater than 2 X ULN
    5. total white blood cell count (WBC) outside the range of 3,000 - 15,000 /μL. Subjects with mild leukocytosis (WBC not higher than 15,000 /μL) may be eligible, especially if the elevated WBC, according to the Investigator, is attributable to corticosteroid therapy and other causes such as hematological or infectious diseases can be excluded.
    6. platelet count <100,000/μL
    7. Hemoglobin less 8 g/dL and/or other signs of severe anemia.
  16. History or presence of a significant renal disease.
  17. Significant illness within the two weeks prior to dosing or any active systemic infection or medical condition that may require treatment or therapeutic intervention during the study.
  18. Current history of active systemic bacterial, viral or fungal infections
  19. Presence or history of underlying metabolic, endocrine, hematologic, pulmonary, cardiac, blood, renal, hepatic, infectious, psychiatric or any medically unstable condition, as assessed by the primary treating physician which, in the opinion of the investigator, would place the subject at unacceptable risk for participation in the study.
  20. Known allergies to bilberries or any other AC containing fruits
  21. Planned diet change, any severe or new dietary restrictions

Sites / Locations

  • Universitätsspital Basel
  • Inselspital Bern
  • Gastroenterologische Praxis Balsiger, Seibold & Partner
  • Centre Hospitalier Universitaire Vaudois
  • Kantonsspital St. Gallen
  • Universitätsspital Zürich

Arms of the Study

Arm 1

Arm 2

Arm Type

Active Comparator

Placebo Comparator

Arm Label

Standardized anthocyanin rich extract

Placebo

Arm Description

3 doses of 2x 500mg in capsules daily

3 doses of 2x 500mg in capsules daily

Outcomes

Primary Outcome Measures

Clinical response at week 8
Proportion of patients with clinical response at week 8 where clinical response is defined as the reduction of total mayo score ≥ 3 points

Secondary Outcome Measures

Clinical remission at week 8
Proportion of patients with symptomatic clinical remission at week 8, where clinical remission is defined as total mayo score ≤ 2, with no individual sub-score > 1
Rectal bleeding
Proportion fo patients with absence of rectal bleeding at week 8, defined by the mayo subscore rectal bleeding of 0
Stool frequency
Proportion of patients with normal or enhanced stool frequency at Week 8, defined by the Mayo sub score stool frequency of 0 or 1 (with at least one point decrease from Baseline, Week 0)
Endoscopic remission
Proportion of patients with endoscopic remission at Week 8, defined by the Modified Mayo endoscopic sub score of 0 or 1 (excluding friability)
Histological remission
Proportion of patients with histological remission at Week 8, defined by the Geboes Index of grade 0 or 1
Symptomatic remission
Proportion of patients with symptomatic remission at Week 4, defined by the Mayo sub scores, i) rectal bleeding of 0, ii) stool frequency of 0 or 1 (with at least one point decrease from Baseline, Week 0), (patient reported outcome)
Rectal bleeding week 4
Proportion of patients with absence of rectal bleeding at Week 4, defined by the Mayo sub score rectal bleeding of 0
Stool frequency week 4
Proportion of patients with normal or enhanced stool frequency at Week 4, defined by the Mayo sub score stool frequency of 0 or 1 (with at least one point decrease from Baseline, Week 0)
Durable symptomatic remission
Proportion of patients with durable symptomatic remission, defined by the Mayo sub scores, i) rectal bleeding of 0, ii) stool frequency of 0 or 1 (with at least one point decrease from Baseline, Week 0) [PRO2] at both Week 8 and Week 12
Clinical response
Proportion of patients with clinical response at Week 8, defined as clinical remission or a three point and ≥30 % decrease from Baseline, Week 0 in the sum of the Modified Mayo score, i) rectal bleeding, ii) stool frequency and iii) endoscopy score (excluding friability), iiii) physicians global assessment (PGA)
Fecal calprotectin
Mean change in fecal calprotectin at Week 1, 2, 4, and 8 compared to Baseline, Week 0.
Steroid dosage
Mean change in steroid dosage for patients in remission at Week 8 to Week 12
SIBDQ
Mean change in each of the short inflammatory bowel disease questionnaire (SIBDQ) sub domains at Week 8 compared to Baseline, Week 0 SIBDQ data will consist of 10 individual items, scores for the 4 dimensions (bowel function, emotional status, systemic symptoms and social function) and a total score. All data will be listed and data for the 4 dimensions and total score summarized by time post-dose for each dose. Week 8 changes from baseline for the 4 dimensions and total score will be plotted and summarized by dose to visually assess dose-related changes.

Full Information

First Posted
June 24, 2019
Last Updated
May 10, 2021
Sponsor
University of Zurich
Collaborators
Swiss National Science Foundation, The Broad Foundation
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1. Study Identification

Unique Protocol Identification Number
NCT04000139
Brief Title
Anthocyanin Rich Extract (ACRE) in Patients With Ulcerative Colitis
Acronym
ACRE
Official Title
A Multi-center, Multi-national, Randomized, Double-blind, Placebo Controlled, Parallel Group, Phase IIa Study to Evaluate the Efficacy, Safety and Tolerability of an Anthocyanin-rich Extract (ACRE) in Patients With Ulcerative Colitis
Study Type
Interventional

2. Study Status

Record Verification Date
May 2021
Overall Recruitment Status
Completed
Study Start Date
April 1, 2019 (Actual)
Primary Completion Date
March 11, 2021 (Actual)
Study Completion Date
March 11, 2021 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
University of Zurich
Collaborators
Swiss National Science Foundation, The Broad Foundation

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
This study evaluates the efficacy and safety of a bilberry derived anthocyanin-rich extract in patients with ulcerative colitis. Two thirds of participants will receive the anthocyanin-rich extract, while one third will receive placebo, for 8 weeks of treatment.
Detailed Description
For anthocyanins (ACs), a wide range of protective biological effects have been described, such as anti-oxidative, anti-carcinogenic, anti-microbial and anti-inflammatory activities. Various research groups could identify a beneficial effect of ACs in IBD and intestinal inflammation. A total of 112 subjects will be randomized. Subjects will be screened for eligibility between 0 and 28 days prior to baseline visit. At the baseline visit, subjects with moderate to severe ulcerative colitis (Mayo score ≥6) and fulfilling all inclusion/exclusion criteria will be randomized into two treatment arms (ACRE or placebo). Total duration of drug product administration will be 8 weeks (56 days) followed by a follow-up phase of 30 days.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Ulcerative Colitis
Keywords
bilberry, anthocyanin, anthocyanin-rich extract, ulcerative colitis

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Model Description
Patients will be randomized into two treatment arms, active ingredient or placebo with the ratio 2:1.
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
48 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Standardized anthocyanin rich extract
Arm Type
Active Comparator
Arm Description
3 doses of 2x 500mg in capsules daily
Arm Title
Placebo
Arm Type
Placebo Comparator
Arm Description
3 doses of 2x 500mg in capsules daily
Intervention Type
Drug
Intervention Name(s)
Standardized anthocyanin-rich extract
Intervention Description
3g of anthocyanin-rich extract taken daily as: 3 doses of 2x 500mg. Treatment duration 56 days (8 weeks).
Intervention Type
Drug
Intervention Name(s)
Placebo
Intervention Description
3g of placebo taken daily as: 3 doses of 2x 500mg. Treatment duration 56 days (8 weeks).
Primary Outcome Measure Information:
Title
Clinical response at week 8
Description
Proportion of patients with clinical response at week 8 where clinical response is defined as the reduction of total mayo score ≥ 3 points
Time Frame
8 weeks
Secondary Outcome Measure Information:
Title
Clinical remission at week 8
Description
Proportion of patients with symptomatic clinical remission at week 8, where clinical remission is defined as total mayo score ≤ 2, with no individual sub-score > 1
Time Frame
8 weeks
Title
Rectal bleeding
Description
Proportion fo patients with absence of rectal bleeding at week 8, defined by the mayo subscore rectal bleeding of 0
Time Frame
8 weeks
Title
Stool frequency
Description
Proportion of patients with normal or enhanced stool frequency at Week 8, defined by the Mayo sub score stool frequency of 0 or 1 (with at least one point decrease from Baseline, Week 0)
Time Frame
8 weeks
Title
Endoscopic remission
Description
Proportion of patients with endoscopic remission at Week 8, defined by the Modified Mayo endoscopic sub score of 0 or 1 (excluding friability)
Time Frame
8 weeks
Title
Histological remission
Description
Proportion of patients with histological remission at Week 8, defined by the Geboes Index of grade 0 or 1
Time Frame
8 weeks
Title
Symptomatic remission
Description
Proportion of patients with symptomatic remission at Week 4, defined by the Mayo sub scores, i) rectal bleeding of 0, ii) stool frequency of 0 or 1 (with at least one point decrease from Baseline, Week 0), (patient reported outcome)
Time Frame
4 weeks
Title
Rectal bleeding week 4
Description
Proportion of patients with absence of rectal bleeding at Week 4, defined by the Mayo sub score rectal bleeding of 0
Time Frame
4 weeks
Title
Stool frequency week 4
Description
Proportion of patients with normal or enhanced stool frequency at Week 4, defined by the Mayo sub score stool frequency of 0 or 1 (with at least one point decrease from Baseline, Week 0)
Time Frame
4 weeks
Title
Durable symptomatic remission
Description
Proportion of patients with durable symptomatic remission, defined by the Mayo sub scores, i) rectal bleeding of 0, ii) stool frequency of 0 or 1 (with at least one point decrease from Baseline, Week 0) [PRO2] at both Week 8 and Week 12
Time Frame
8 weeks / 12 weeks
Title
Clinical response
Description
Proportion of patients with clinical response at Week 8, defined as clinical remission or a three point and ≥30 % decrease from Baseline, Week 0 in the sum of the Modified Mayo score, i) rectal bleeding, ii) stool frequency and iii) endoscopy score (excluding friability), iiii) physicians global assessment (PGA)
Time Frame
8 weeks
Title
Fecal calprotectin
Description
Mean change in fecal calprotectin at Week 1, 2, 4, and 8 compared to Baseline, Week 0.
Time Frame
8 weeks
Title
Steroid dosage
Description
Mean change in steroid dosage for patients in remission at Week 8 to Week 12
Time Frame
4 weeks (follow-up phase)
Title
SIBDQ
Description
Mean change in each of the short inflammatory bowel disease questionnaire (SIBDQ) sub domains at Week 8 compared to Baseline, Week 0 SIBDQ data will consist of 10 individual items, scores for the 4 dimensions (bowel function, emotional status, systemic symptoms and social function) and a total score. All data will be listed and data for the 4 dimensions and total score summarized by time post-dose for each dose. Week 8 changes from baseline for the 4 dimensions and total score will be plotted and summarized by dose to visually assess dose-related changes.
Time Frame
8 weeks

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Male or female ≥ 18 years of age Established diagnosis of UC, with minimum time from diagnosis of ≥3 months Moderately at least left sided UC (disease should extend 15 cm or more above the anal verge). Disease severity determined by a Modified Mayo score of 6 to 12 with an endoscopic sub score ≥2 assessed by central reading of endoscopy performed at screening visit and no other individual sub score <1 (see 9.8.2 for more detailed information) Current oral or rectal 5-ASA/SP use or a history of oral or rectal 5-ASA/SP use Current steroids use or history of steroids dependency, refractory, or intolerance, including no steroids treatment due to earlier side-effects (only one of the steroids criteria have to be fulfilled, see definition in European Crohn´s and Colitis organization (ECCO) guidelines) One of the following points must be fulfilled: Active disease despite induction therapy with 5-ASA agents where adequate therapy is considered with an oral 5-ASA (mesalamine 2- 4.8 g/day, sulfasalazine 4-6 g/day) administered for at least 2 weeks. Topical treatment with 5-ASA may have been attempted but this is not a prerequisite for inclusion in the study OR Intolerance to oral 5-ASAs or azathioprine OR Active disease despite a thiopurine (adequately dosed according to treatment guidelines, such as 2-3 mg/kg for azathioprine) or methotrexate administered for at least 12 weeks. Allowed to receive a therapeutic dose of following UC drugs during the study: Oral steroids therapy (≤30 mg prednisone or equivalent/daily) providing that the dose has been stable for 2 weeks prior Baseline Oral or rectal MMX Budesonide therapy (9mg/daily) initiated and a stable dose at least 2 months before Baseline Oral or rectal 5-ASA/SP compounds, providing that the dose has been stable for 2 months prior to Baseline and initiated at least 8 weeks before screening. AZA/6-MP providing that the dose has been stable for 8 weeks prior to Baseline and been initiated at least 2 months before screening TNF inhibitors (Infliximab, Adalimumab or Golimumab) are allowed, providing that the dose is stable for at least 2 months prior to baseline and during the study treatment period Vedolizumab and Tofacitinib is allowed providing that the dose is stable for at least 2 months prior to baseline and during the study treatment period Ability to understand the treatment, willingness to comply with all study requirements and ability to provide informed consent Exclusion Criteria: Subjects fulfilling any of the following criteria are not eligible for inclusion in this study: Suspicion of differential diagnosis such as; Crohn's enterocolitis, ischaemic colitis, radiation colitis, indeterminate colitis, infectious colitis, diverticular disease, associated colitis, microscopic colitis, massive pseudopolyposis or non-passable stenosis Acute fulminant UC and/or signs of systemic toxicity UC limited to the rectum (disease which extends <15 cm above the anal verge) History of malignancy, except for: Treated (cured) basal cell or squamous cell in situ carcinoma Treated (cured) cervical intraepithelial neoplasia or carcinoma in situ of the cervix with no evidence of recurrence within the previous 5 years prior to the screening visit History or presence of any clinically significant disorder that, in opinion of the investigator, could impact on patient's possibility to adhere to the protocol and protocol procedures or would confound the study result or compromise patient safety Long term treatment with antibiotics or non-steroidal anti-inflammatory drugs (NSAIDs) within two weeks prior to screening (one short treatment regime for antibiotics and occasional use of NSAIDS are allowed) Serious active infection Gastrointestinal infections including positive Clostridium difficile stool assay Currently receiving parenteral nutrition or blood transfusions Females who are lactating or have a positive serum pregnancy test during the screening period Concurrent participation in another clinical study with investigational therapy or previous use of investigational therapy within 5 half-lives and within at least 30 days after last treatment of the experimental product prior to enrolment Subjects who have been treated with a. A dose of ≥ 1 mg per kg body weight prednisone or ≥30mg/d in the last 4 weeks prior to randomization. Ongoing treatment with cyclosporine or tacrolimus. Eligible subjects must have stopped cyclosporine and/or tacrolimus at least 4 weeks and antibiotics at least 1 week prior to randomization. known history of alcohol abuse, chronic liver or biliary disease Repeated and confirmed laboratory findings showing: total bilirubin greater than 2 x upper limit of the normal range (ULN) unless in context of Gilbert's syndrome alkaline phosphatase (AP) greater than 2 x ULN ALT (SGPT) greater than 2 x ULN serum creatinine greater than 2 X ULN total white blood cell count (WBC) outside the range of 3,000 - 15,000 /μL. Subjects with mild leukocytosis (WBC not higher than 15,000 /μL) may be eligible, especially if the elevated WBC, according to the Investigator, is attributable to corticosteroid therapy and other causes such as hematological or infectious diseases can be excluded. platelet count <100,000/μL Hemoglobin less 8 g/dL and/or other signs of severe anemia. History or presence of a significant renal disease. Significant illness within the two weeks prior to dosing or any active systemic infection or medical condition that may require treatment or therapeutic intervention during the study. Current history of active systemic bacterial, viral or fungal infections Presence or history of underlying metabolic, endocrine, hematologic, pulmonary, cardiac, blood, renal, hepatic, infectious, psychiatric or any medically unstable condition, as assessed by the primary treating physician which, in the opinion of the investigator, would place the subject at unacceptable risk for participation in the study. Known allergies to bilberries or any other AC containing fruits Planned diet change, any severe or new dietary restrictions
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Gerhard Rogler, Prof. Dr. med. Dr. phil.
Organizational Affiliation
Universitätsspital Zürich
Official's Role
Study Director
Facility Information:
Facility Name
Universitätsspital Basel
City
Basel
ZIP/Postal Code
4031
Country
Switzerland
Facility Name
Inselspital Bern
City
Bern
ZIP/Postal Code
3010
Country
Switzerland
Facility Name
Gastroenterologische Praxis Balsiger, Seibold & Partner
City
Bern
ZIP/Postal Code
3012
Country
Switzerland
Facility Name
Centre Hospitalier Universitaire Vaudois
City
Lausanne
ZIP/Postal Code
1011
Country
Switzerland
Facility Name
Kantonsspital St. Gallen
City
Saint Gallen
ZIP/Postal Code
9007
Country
Switzerland
Facility Name
Universitätsspital Zürich
City
Zürich
ZIP/Postal Code
8091
Country
Switzerland

12. IPD Sharing Statement

Plan to Share IPD
No

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Anthocyanin Rich Extract (ACRE) in Patients With Ulcerative Colitis

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