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Trial registered on ANZCTR

Registration number
Ethics application status
Date submitted
Date registered
Date last updated
Type of registration
Prospectively registered

Titles & IDs
Public title
A Randomised, Double-blinded, Placebo-controlled Study of Kivia (Trademark) 575mg Zyactinase (Registered Trademark) Capsule for the Improvement of Digestive Health Parameters in Subjects with Irritable Bowel Syndrome with Constipation Symptoms
Scientific title
A phase III study to investigate the effect of daily ingestion of four then two Kivia (Trademark) 575mg Zyactinase (Registered Trademark) or placebo capsules on stool frequency and abdominal pain severity when given to subjects with constipation dominant Irritable Bowel Syndrome
Secondary ID [1] 283228 0
Universal Trial Number (UTN)
Trial acronym
IBS Discomfort Elimination Assessment (IDEA) Study
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Constipation dominant Irritable Bowel Syndrome (IBS-C) 290102 0
Condition category
Condition code
Oral and Gastrointestinal 290478 290478 0 0
Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon

Study type
Description of intervention(s) / exposure
Treatment Arm 1: Oral capsules of Zyactinase (Registered Trademark) (active ingredient ) 1150mg , twice daily for four weeks followed by 575mg twice daily for four weeks. Total treatment period is 8 weeks

Treatment Arm 2:Oral capsules of placebo 1150mg twice daily for four weeks followed by 575mg twice daily for four weeks. Total treatment period is 8 weeks.

Study drug will be administered at the beginning of each dose period and all unused medications and used packaging is to be returned at the end of each dose period.
Intervention code [1] 287960 0
Treatment: Drugs
Comparator / control treatment
Capsules of placebo 1150mg twice daily orally for four weeks then 575mg twice daily orally for four weeks
Control group

Primary outcome [1] 290504 0
Overall responder rate for both increased weekly stool frequency of at least one complete spontaneous bowel movement (CSBM) AND decreased weekly average of worst abdominal pain of at least 30% from baseline using a Visual Analogue Scale (VAS) of 0-10 cm.
Timepoint [1] 290504 0
Daily from Screening to final visit at week 12
Secondary outcome [1] 304650 0
Subjects with adequate weekly control of symptoms as assessed by daily Diary records of response to directed question.
Timepoint [1] 304650 0
At baseline and every day after start of study treatment for 10 weeks

Secondary outcome [2] 304651 0
Weekly average worst abdominal pain and worst abdominal discomfort using a Visual Analogue Scale (VAS) of 0-10 cm.
Timepoint [2] 304651 0
Daily from Screening to final visit at week 12.
Secondary outcome [3] 304652 0
Change in stool form by week using the 7-Category Bristol Stool Scale
Timepoint [3] 304652 0
Daily from Screening to final visit at week 12.
Secondary outcome [4] 304653 0
Abdominal pain-free days and abdominal discomfort-free days by week during the treatment period as assessed by daily Diary records.
Timepoint [4] 304653 0
Daily from Screening to final visit at week 12.
Secondary outcome [5] 304656 0
Severity of bowel urgency, of abdominal bloating, of abdominal of distension and of flatulence using a Visual Analogue Scale (VAS) of 0-10 cm.
Timepoint [5] 304656 0
Daily from Screening to final visit at week 12.
Secondary outcome [6] 304657 0
Frequency of straining at stool using VAS scale of 0-10 cm.
Timepoint [6] 304657 0
Daily from Screening to final visit at week 12.
Secondary outcome [7] 304658 0
Subject and Physician Global Assessment IBS-C and subject satisfaction with bowel function as assessed by Diary records of subject response to directed question.
Timepoint [7] 304658 0
Baseline and end of study treatment at week 8.
Secondary outcome [8] 304659 0
Weekly responder rate (CSBM and abdominal pain combined and individually) as assessed by subject daily Diary records of number of bowel movements and VAS scales.
Timepoint [8] 304659 0
Daily from Screening to final visit at week 12.
Secondary outcome [9] 304660 0
Time to first bowel movement as assessed by daily Diary records.
Timepoint [9] 304660 0
Daily from Screening to final visit at week 12.
Secondary outcome [10] 304661 0
Use of rescue medication during the study as assessed by daily Diary records.
Timepoint [10] 304661 0
Daily from Screening to final visit at week 12.

Key inclusion criteria
Subjects diagnosed with IBS-C according to Rome III criteria Abdominal pain intensity in past 24 hour score of >3.0 using VAS scale during screening

Subject swith Fewer than 3 Complete Spontaneous Bowel Movements per week during screening
Minimum age
18 Years
Maximum age
75 Years
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
Diarrhoea predominant or alternating IBS
Significant GI condition or serious systemic illness

Study design
Purpose of the study
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Subjects meeting eligibility criteria will be randomised to treatment by the PI, 1:1 (study drug: placebo) online via the eCRF system.
Each investigational site will be allocated blocks of centrally computer generated randomised treatment packs which will be dispensed sequentially.
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
The randomisation sequence will be computer generated
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
Intervention assignment
Other design features
Not applicable
Phase 3
Type of endpoint/s
Statistical methods / analysis
The sample size was calculated using a chi-square analysis as the test.

Demographic and other data recorded at Screening and Randomisation will be summarised and tabulated by randomised treatment group using common descriptive statistics. The analysis for the primary and secondary efficacy endpoints and the safety data will be performed according to the clinical study protocol and the approved Statistical Analysis Plan.

Recruitment status
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 1550 0
John Hunter Hospital Royal Newcastle Centre - New Lambton
Recruitment hospital [2] 1552 0
Princess Alexandra Hospital - Woolloongabba
Recruitment hospital [3] 2278 0
Nepean Hospital - Kingswood
Recruitment hospital [4] 2279 0
Box Hill Hospital - Box Hill
Recruitment hospital [5] 2280 0
The Royal Adelaide Hospital - Adelaide
Recruitment hospital [6] 2281 0
Gosford Hospital - Gosford
Recruitment hospital [7] 4783 0
The Alfred - Prahran
Recruitment hospital [8] 4784 0
Keogh Institute for Medical Research - Nedlands
Recruitment hospital [9] 4785 0
Oztrials Clinical Research - Drummoyne
Recruitment postcode(s) [1] 7957 0
2031 - Randwick
Recruitment postcode(s) [2] 12302 0
2047 - Drummoyne
Recruitment postcode(s) [3] 7958 0
2250 - Gosford
Recruitment postcode(s) [4] 7387 0
2305 - New Lambton
Recruitment postcode(s) [5] 7954 0
2747 - Kingswood
Recruitment postcode(s) [6] 7955 0
3128 - Box Hill
Recruitment postcode(s) [7] 7390 0
3181 - Prahran
Recruitment postcode(s) [8] 7389 0
4102 - Woolloongabba
Recruitment postcode(s) [9] 7956 0
5000 - Adelaide
Recruitment postcode(s) [10] 12303 0
6009 - Nedlands
Recruitment outside Australia
Country [1] 5944 0
New Zealand
State/province [1] 5944 0
Auckland; Dunedin; Hawkes Bay

Funding & Sponsors
Funding source category [1] 288049 0
Commercial sector/Industry
Name [1] 288049 0
Vital Food Processors Ltd
Country [1] 288049 0
New Zealand
Primary sponsor type
Commercial sector/Industry
Vital Food Processors Ltd
78 Ascot Road
Airport Oaks Auckland 2022
New Zealand
Secondary sponsor category [1] 286774 0
Name [1] 286774 0
Address [1] 286774 0
Country [1] 286774 0

Ethics approval
Ethics application status
Ethics committee name [1] 289975 0
Hunter New England Local HREC (EC00403)
Ethics committee address [1] 289975 0
Locked Bag 1
New Lambton NSW 2305
Ethics committee country [1] 289975 0
Date submitted for ethics approval [1] 289975 0
Approval date [1] 289975 0
Ethics approval number [1] 289975 0

Brief summary
Irritable bowel syndrome (IBS) is the most common gastrointestinal disorder without any physical or physiological abnormality affecting approximately 10% of the population of Western countries. IBS is largely diagnosed in early adulthood and though the degree to which people are affected differs, IBS can cause significant impact of lifestyle, relationships and productivity.
Kivia (Trademark) Zyactinase (Registered Trademark) is a 100% natural freeze-dried kiwifruit product which has been tested in both animals and humans and shown to be safe Kivia (Trademark) is manufactured in New Zealand and is commercially available in Australia.

The purpose of this Phase III study is to see whether the product Kivia (Trademark) containing the active ingredient Zyactinase (Registered Trademark) can provide relief of IBS associated constipation and other symptoms of IBS. Subjects diagnosed with constipation dominant IBS will be randomised in a 1:1 ratio to receive either Kivia (Trademark) or matched placebo capsules for eight weeks Daily information about IBS-C symptoms will be captured by subjects using an electronic diary, and they will attend six clinic visits for efficacy and safety assessments.
Trial website
Trial related presentations / publications
Public notes

Principal investigator
Name 43002 0
Prof Peter Gibson
Address 43002 0
Alfred Hospital, Dept. of Gastroenterology
55 Commercial Road
3004 Melbourne, Victoria
Country 43002 0
Phone 43002 0
+61 3 9076 2223
Fax 43002 0
+61 3 9076 2194
Email 43002 0
Contact person for public queries
Name 43003 0
Mr T. Justus Homburg
Address 43003 0
Vital Food Processors Ltd
78 Ascot Road, Airport Oaks, Auckland 2022
Country 43003 0
New Zealand
Phone 43003 0
+64 9 275 5073
Fax 43003 0
+64 9 275 5576
Email 43003 0
Contact person for scientific queries
Name 43004 0
Dr Iona Weir
Address 43004 0
Vital Food Processors Ltd
78 Ascot Road, Airport Oaks, Auckland 2022
Country 43004 0
New Zealand
Phone 43004 0
+64 9 275 5073
Fax 43004 0
+64 9 275 5576
Email 43004 0

No information has been provided regarding IPD availability

What supporting documents are/will be available?

No Supporting Document Provided

Results publications and other study-related documents

Documents added manually
No documents have been uploaded by study researchers.

Documents added automatically
No additional documents have been identified.