Clinical trial NCT02418507: An Evaluation of the Effectiveness of a Proprietary Probiotic Blend on Functional Constipation
Official title: A Randomized, Double-Blind, Placebo-Controlled, Parallel Study to Evaluate the Effectiveness of a Proprietary Probiotic Blend on Functional Constipation
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Functional Constipation
Lead sponsor: KGK Science Inc.
Sponsor class: INDUSTRY
Collaborators: name: UAS Labs LLC
First posted: 2015-04-16
Enrollment: 100
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: OTHER

Brief summary: The primary objective for this study is to monitor the change in patient assessed symptoms of constipation in subjects taking the proprietary probiotic blend compared to those taking the placebo. The secondary objective for this study is to additionally monitor changes in stool consistency, stool frequency, quality of life and microbial composition of feces from baseline to Day 29, in all subjects. Safety considerations monitored any changes in blood safety parameters as well as incidence of adverse events throughout the entire study for all subjects.


Eligibility criteria: Inclusion Criteria:

* Healthy male or female adults, aged 18 to 65 years
* BMI of 18.5 kg/m2 to 35.0 kg/m2 (inclusive)
* Subject is not of child bearing potential. Defined as females who have had a hysterectomy or oophorectomy, bilateral tubal ligation or are post-menopausal (natural or surgically with \> 1 year since last menstruation) OR Female subject of childbearing potential must agree to use a medically approved method of birth control and have a negative urine pregnancy test result. Acceptable methods of birth control include:
* Hormonal contraceptives including oral contraceptives, hormone birth control patch (Ortho Evra), vaginal contraceptive ring (NuvaRing), injectable contraceptives (Depo-Provera, Lunelle), or hormone implant (Norplant System)
* Double-barrier method (condoms with spermicide or diaphragm with spermicide)
* Non-hormonal intrauterine devices
* Vasectomy of partner
* Non-heterosexual lifestyle
* Subjects must have at least two of the following criteria based on subject self-reporting, for the past 3 months with the symptoms beginning at least 6 months ago:
* Two or more criteria must be met by subjects:

  1. Straining during at least 25% of defecations
  2. Lumpy or hard stools in at least 25% of defecations
  3. Sensation of incomplete evacuation for at least 25% of defecations
  4. Sensation of anorectal obstruction/blockage for at least 25% of defecations
* Fewer than three defecations per week
* Loose stools are rarely present without the use of laxatives
* Insufficient criteria for Irritable Bowel Syndrome
* Subjects with an average stool type of \< 3 on the Bristol Stool Scale as assessed over the two week run-in period (confirmed at baseline review of bowel habits diary).
* Subjects who agree to maintain their current level of physical activity throughout the trial period.
* Subjects who agree to discontinue the use of probiotic supplements including foods supplemented with probiotics (i.e. yogurts) or fiber supplements including foods labeled as supplemented with fiber
* Subjects who agree to discontinue use of over-the-counter laxative medications (other than the rescue medication provided) within 2 weeks of screening and throughout the trial.
* Subjects who successfully complete the run-in period by completing at least 80% of Run-In diary entries, 100% of IPAQ questionnaires and provide fecal sample.
* Subjects who understand the nature and purpose of the study including the potential risks and side effects
* Subjects who are willing to complete all study procedures including study related questionnaires and comply with study requirements
* Subjects who have given voluntary, written, informed consent to participate in the study.

Exclusion Criteria:

* Subjects who are pregnant, breastfeeding or planning on becoming pregnant throughout the course of the study.
* Subjects with any unstable medical conditions
* Subjects with any major diseases of the cardiovascular, renal, hepatic, gastrointestinal, pulmonary or endocrine systems
* Subjects with Type I or Type II diabetes
* Subjects with a history of major gastrointestinal complications (i.e. Crohn's disease, ulcer, cancer, ulcerative colitis)
* History of or current diagnosis of any cancer (except for successfully treated basal cell carcinoma) diagnosed less than 5 years prior to screening. Subjects with cancer in full remission more than 5 years after diagnosis are acceptable
* Subjects with neurological disorders or significant psychiatric illnesses (significance determined by the Qualified Investigator)
* Subjects who are immuno-compromised (HIV positive, on anti-rejection medication, rheumatoid arthritis)
* Subjects with any medical condition or a history of abdominal surgery that is deemed exclusionary by the Qualified Investigator
* Subjects who have features which may suggest a more serious underlying cause of chronic constipation such as rectal bleeding, anemia, abrupt weight loss ( 5kg or more within the past month prior to randomization), gastrointestinal polyps, first degree family history of colorectal cancer.
* Subjects with an active eating disorder
* Subjects who have used an over-the-counter or prescription laxative medication within 2 weeks prior to screening.
* Subjects who have used probiotic or fiber supplements (or probiotic/fiber enriched foods) within 4 weeks prior to screening
* Subjects who have used an antibiotic within 4 weeks prior to screening
* Subjects who have used medications in the investigators opinion known to cause constipation (i.e. opiates) within 4 weeks of screening
* Subjects using Medicinal Marijuana
* Subjects who use illicit drugs or have a history of alcohol or drug abuse within the past 6 months
* Subjects who currently consume greater than 2 standard alcoholic drinks per day.
* Subjects who have participated in a clinical research trial within 30 days prior to randomization.
* Subjects with an allergy or sensitivity to the investigational product ingredient
* Subjects who are cognitively impaired and/or who are unable to give informed consent
* Subjects who have abnormal laboratory results or any other medical or psychological condition which, in the opinion of the Principle Investigator, may adversely affect the subjects' ability to complete the study or its measures or which may pose significant risk to the subject.

Primary outcomes:
measure: Changes in the symptoms of constipation as measured by the PAC SYM questionnaire
timeFrame: Baseline to Day 29
Secondary outcomes:
measure: Changes in stool consistency as measured by the Bristol Stool Scale
timeFrame: Baseline to Day 29
measure: Changes in stool frequency
timeFrame: Baseline to Day 29
measure: Changes in quality of life questionnaire score
timeFrame: Baseline to Day 29
measure: Changes in microbial composition of feces
timeFrame: Baseline to Day 29
Other outcomes:
measure: Changes in blood safety parameters
timeFrame: Baseline to Day 29
Locations:
city: London
country: Canada
facility: KGK Synergize Inc.
state: Ontario
Study officials:
affiliation: tetyana@kgksynergize.com
name: Tetyana Pelipyagina, MD
role: PRINCIPAL_INVESTIGATOR
References: