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Secretory DiarrheaPhase 2POCNCT02111304

Efficacy of iOWH032 in Dehydrating Cholera

A Phase 2 study testing iOWH032 in people with Secretory Diarrhea, run by PATH at 1 site in Bangladesh.

Withdrawn

Withdrawn. The study stopped before anyone enrolled.

Official record
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Trial summary

The primary hypothesis is that administration of iOWH032 to adult and pediatric males and females with acute cholera due to V. cholerae O1 reduces stool output in the first 24 hours significantly more than does the current standard of care. Read more about this study

Who is it for?
Ages 5 to 55 years
Conditions the study is for
Secretory Diarrhea
What is being tested?
iOWH032
Could I receive a placebo?
No, everyone receives an active treatment
How many people
0 participants
Where
1 siteBangladesh
Study dates
Jun 2014to May 2016
Phase
Phase 2
Are there results?
None posted in the registry

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 5 to 55 years
  • All sexes
  • No healthy volunteers
  • Child, Adult

Who may be able to join

  • A patient will be considered eligible for participation in the study if the following inclusion criteria are satisfied on admission (Day 1) to the Dhaka Hospital of icddr,b:
  • Adults aged 18 years to 55 years
  • Duration of illness: History of acute watery diarrhea of less than 24 hours' duration without fever or visible blood in feces
  • Clinical signs and symptoms of severe dehydration (>10% loss of body weight based on rehydration weight)
  • Stool RDT and/or stool DF microscopy demonstrating presence of V. cholerae
  • Must have a purging rate greater than/equal to 20 mL/kg (5 mL/kg/h) during the initial 4- to 6-hour screening/observation period, and signs of clinical dehydration must be corrected
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  • Written informed consent for participation in the study (see Section 6.1.2 for details of the consent process)
  • Negative urine pregnancy test for all female patients
  • Nonpregnant and nonlactating females of childbearing potential agree to either abstain from sex or use double barrier contraception (2 contraceptive methods at a time) during the study and until 1 month after the last dose of study drug
  • A patient will be considered eligible for participation in the study if the following inclusion criteria are satisfied on admission (Day 1) to the Clinical Research Ward (CRW) of Dhaka Hospital:
  • Pediatric population aged ≥ 5 years to < 18 years of age
  • Duration of illness: History of acute watery diarrhea of less than 24 hours' duration without fever or visible blood in feces
  • Clinical signs and symptoms of severe dehydration (>10% loss of body weight based on rehydration weight)
  • Stool RDT and/or stool DF microscopy demonstrating presence of V. cholerae
  • Must have a purging rate ≥5 mL/kg/h average during the initial 4- to 6-hour screening/observation period and signs of clinical dehydration must be corrected
  • Parental consent for all pediatric patients participating in the study and written informed assent for children aged 11-17 years (see Section 6.1.2 for details of the consent process)
  • Negative urine pregnancy test for female postmenarchal patients
  • Nonpregnant and nonlactating females of childbearing potential agree to either abstain from sex or use double-barrier contraception (2 contraceptive methods at a time) during the study and until 1 month after the last dose of study drug

Who cannot join

  • A patient with any of the following criteria at screening for study enrollment will not qualify for the study:
  • Received antidiarrheal medication (eg, loperamide, diphenoxylate) within 7 days before screening
  • Abnormal ECG findings, with the exception of sinus tachycardia, premature atrial contractions, or ECG intervals within normal limits for sinus rate
  • Use of drugs metabolized predominantly via CYP2C9 within 7 days before screening (see Section 5.7)
  • Concomitant infection requiring antimicrobial therapy other than the study drug that may interfere with the evaluation of either the efficacy or safety of the study drug
  • Patients unwilling or unable to take part in this study or refusing to sign informed consent (patients who participate on the basis of proxy consent will be re-consented at the end of the screening/observation period; those refusing consent at that time will be excluded from further study participation)
Show all 15Show fewer
  • Patients previously enrolled in this or any other investigational study within the past 30 days
  • PART B - PEDIATRIC
  • A patient with any of the following criteria at screening for study enrollment will not qualify for the study:
  • Received antidiarrheal medication (eg, loperamide, diphenoxylate) within 7 days before screening
  • Abnormal ECG findings, with the exception of sinus tachycardia, premature atrial contractions, or ECG intervals within normal limits for sinus rate
  • Use of drugs metabolized predominantly via CYP2C9 (see Section 5.7) within 7 days before screening
  • Concomitant infection requiring antimicrobial therapy other than the study drug that may interfere with evaluation of either the efficacy or safety of the study drug
  • Children or parents/guardians unwilling or unable to take part in this study or refusing to sign informed assent/consent; applicable patients who participate on the basis of proxy assent/consent will be re-assented at the end of the screening/observation period; those refusing assent/consent at that time will be excluded from further study participation
  • Patients previously enrolled in this or any other investigational study with the past 30 days

Trial locations and contacts

1 site in 1 country.

Bangladesh1 site
  • International Centre for Diarrhoeal Disease Research, Bangladesh

    Dhaka, 1212

Other trials in Bangladesh

About this study

Official title: A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Two-Part Trial to Evaluate the Efficacy, Safety, and Tolerability of iOWH032 in the Treatment of Acute Dehydrating Diarrhea in Adult and Pediatric Patients With Cholera

The primary hypothesis is that administration of iOWH032 to adult and pediatric males and females with acute cholera due to V. cholerae O1 reduces stool output in the first 24 hours significantly more than does the current standard of care.

Read the detailed description

This is a Phase 2, randomized, double-blind, placebo-controlled study of iOWH032 in adult patients (Part A) and then pediatric patients (Part B) with acute watery diarrhea of less than 24 hours' duration due to cholera. All subjects will be treated with standard of care (IV rehydration fluids, ORS, and azithromycin less than/equal to1 g po) in addition to study drug (iOWH032 active drug or placebo). Patients will be admitted, undergo a 4- to 6-hour screening/observation period, be randomized in the study and treated with study drug (active or placebo) for up to 3 days (ie, up to 9 doses), with a follow-up visit on Day 7.

In Part A, approximately 170 adult patients with severe dehydrating diarrhea due to cholera will be enrolled and randomized 1:1 to receive iOWH032 500 mg or placebo TID for up to 3 days. Following completion of Part A, the data and safety monitoring board (DSMB) will review the unblinded data to assess safety and efficacy and conduct a futility analysis prior to proceeding to Part B.

Following the DSMB recommendation of dose and dosing schedule for pediatric patients, Part B will be initiated. Approximately 156 pediatric patients with severe dehydrating diarrhea due to cholera will be enrolled and randomized 1:1 to receive iOWH032 or placebo at the recommended dose and dosing regimen.

The primary efficacy population for Parts A and B will consist of patients who tolerate the first 3 doses of study drug (0, 8, and 16 hours post-randomization) without vomiting and whose diagnosis is subsequently confirmed by a positive culture for V. cholerae O1.

The International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b) Ethics Committee and Western Institutional Review Board (WIRB) will be informed of any serious adverse event (SAE). Occurrence of 2 or more drug-related SAEs within a group of 10 patients (20% of cumulative completed patients in the treatment group) in Part A or Part B will result in unblinding of those patients and review by the DSMB. The study can be halted, discontinued, or amended according to the recommendations of the icddr,b DSMB.

Being tested
iOWH032
Keywords
cholera, diarrhea, secretory diarrhea, ORS, V. cholerae O1, iOWH032, children, pharmacokinetic, Bangladesh
Medical subject headings
Cholera, Diarrhea

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • iOWH032Drug

Study groups in NCT02111304
Study groupRoleWhat they receive
Part A (Adults)Active comparatorIn Part A, approximately 170 adult patients with severe dehydrating diarrhea due to cholera will be enrolled and randomized 1:1 to receive iOWH032 500 mg or placebo TID for up to 3 days
Receives: Drug: iOWH032
Part B (Pediatric)Active comparatorFollowing completion of Part A, the data and safety monitoring board (DSMB) will review the unblinded data to assess safety and efficacy and conduct a futility analysis prior to proceeding to Part B. Following the DSMB recommendation of dose and dosing schedule for pediatric patients, Part B will be initiated. Approximately 156 pediatric patients with severe dehydrating diarrhea due to cholera will be enrolled and randomized 1:1 to receive iOWH032 or placebo at the recommended dose and dosing regimen.
Receives: Drug: iOWH032

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Output (mL/kg of body weight) of unformed stools (composite)

    The primary objectives of the study are as follows:

    • To evaluate the efficacy of iOWH032 in adults with cholera, as measured by unformed stool output in the first 24 hours after administration (Part A)
    • To determine an effective dose and dosing regimen of iOWH032 in children with cholera (Part A)
    • To evaluate the efficacy of iOWH032 at this recommended dose and dosing regimen in children with cholera (Part B)

    Measured: First 24-hour period following randomization

Secondary outcomes (1)
  1. Total stool output (mL/kg body weight) (composite)

    • Total stool output (mL/kg body weight) from randomization until the resolution of diarrhea, or until 3 days (72 hours post-dose) after administration of the first dose of study drug, whichever is sooner
    • Time to resolution of diarrhea
    • Incidence of diarrhea resolution within 48 hours and within 72 hours from the time of administration of the first dose of study drug
    • Intake of ORS solution and plain water in mL/kg from time of randomization through the last unformed stool or until 3 days (72 hours) after administration of the first dose of study drug, whichever is sooner
    • Requirement for unscheduled IV rehydration therapy (mL/kg) after randomization
    • Sodium, potassium, chloride, cAMP, parent drug, and metabolite concentrations, all in the stool
    • Sensitivity, specificity, positive and negative predictive values, and accuracy of stool DF and RDT in the diagnosis of cholera, and the impact of antibiotic therapy on DF and RDT

    Measured: From randomization until the resolution of diarrhea, or until 3 days (72 hours post-dose) after administration of the first dose of study drug, whichever is sooner

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Apr 2014 (estimated)
  2. Study startJun 2014
  3. Primary completionJan 2016 (estimated)
  4. Study completionMay 2016 (estimated)

Why it stopped: Trial was never initiated due to PATH executive decision.

Resources

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 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
0 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02111304
Sponsor's protocol ID
POC Study (DDP CFT PO 202)
Acronym
POC
Status last verified
Apr 2014
First submitted
1 Apr 2014
Last updated
26 Sep 2014
Results posted
No
Data monitoring committee
Yes

Publications

  • Bardhan PK, Khan WA, Ahmed S, Salam MA, Saha D, Golman D, et al. Evaluation of safety and efficacy of a novel anti-secretory anti-diarrheal agent Crofelemer (NP-303), in combination with a single oral dose of azithromycin for the treatment of acute dehydrating diarrhea caused by Vibrio cholera cholera and other Bacterial Infections: 43rd US-Japan Cooperative Medical Science Program, Kyoto, Japan, November 21, 2008.

  • Boschi-Pinto C, Lanata CF, Black RE. The global burden of childhood diarrhea. Matern Child Health. 2009;3: 225-243.

  • Cystic Fibrosis Mutation Database, 2009 [online] Available at: http://www.genet.sickkids.on.ca/cftr/app

  • Khan WA, Saha D, Rahman A, Salam MA, Bogaerts J, Bennish ML. Comparison of single-dose azithromycin and 12-dose, 3-day erythromycin for childhood cholera: a randomised, double-blind trial. Lancet. 2002 Nov 30;360(9347):1722-7. doi: 10.1016/S0140-6736(02)11680-1.

    PubMed 12480424
  • Muanprasat C, Sonawane ND, Salinas D, Taddei A, Galietta LJ, Verkman AS. Discovery of glycine hydrazide pore-occluding CFTR inhibitors: mechanism, structure-activity analysis, and in vivo efficacy. J Gen Physiol. 2004 Aug;124(2):125-37. doi: 10.1085/jgp.200409059.

    PubMed 15277574
  • Raghupathy P, Ramakrishna BS, Oommen SP, Ahmed MS, Priyaa G, Dziura J, Young GP, Binder HJ. Amylase-resistant starch as adjunct to oral rehydration therapy in children with diarrhea. J Pediatr Gastroenterol Nutr. 2006 Apr;42(4):362-8. doi: 10.1097/01.mpg.0000214163.83316.41.

    PubMed 16641573
  • Ram PK, Choi M, Blum LS, Wamae AW, Mintz ED, Bartlett AV. Declines in case management of diarrhoea among children less than five years old. Bull World Health Organ. 2008 Mar;86(3):E-F. doi: 10.2471/blt.07.041384. No abstract available.

    PubMed 18368194
  • Saha D, Karim MM, Khan WA, Ahmed S, Salam MA, Bennish ML. Single-dose azithromycin for the treatment of cholera in adults. N Engl J Med. 2006 Jun 8;354(23):2452-62. doi: 10.1056/NEJMoa054493.

    PubMed 16760445
  • StataCorp. POWERCAL: Stata module to perform general power and sample size calculations. http://ideas.repec.org/c/boc/bocode/s422401.html. 2013. Stata Statistical Software: Release 13. StataCorp LP, College Station, TX.

  • United Nations Children's Fund (UNICEF) and World Health Organization (WHO). Diarrhoea: Why children are still dying and what can be done. 2009. New York and Geneva.

  • Verkman AS, Galietta LJ. Chloride channels as drug targets. Nat Rev Drug Discov. 2009 Feb;8(2):153-71. doi: 10.1038/nrd2780. Epub 2008 Jan 19.

    PubMed 19153558
  • Victora CG, Bryce J, Fontaine O, Monasch R. Reducing deaths from diarrhoea through oral rehydration therapy. Bull World Health Organ. 2000;78(10):1246-55.

    PubMed 11100619
  • World Health Organization. The rational use of drugs in the management of acute diarrhoea in children. WHO, Geneva, 1990.

  • Zhou Z, Wang X, Liu HY, Zou X, Li M, Hwang TC. The two ATP binding sites of cystic fibrosis transmembrane conductance regulator (CFTR) play distinct roles in gating kinetics and energetics. J Gen Physiol. 2006 Oct;128(4):413-22. doi: 10.1085/jgp.200609622. Epub 2006 Sep 11.

    PubMed 16966475

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing iOWH032 in people with Secretory Diarrhea, run by PATH at 1 site in Bangladesh.

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 18 inclusion and 15 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: withdrawn, as of the sponsor's last update on 26 Sep 2014. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Bangladesh. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study was withdrawn before enrolling participants, so there are no results.

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?

Output (mL/kg of body weight) of unformed stools (composite) (time frame: First 24-hour period following randomization). 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 NCT02111304, which also lists 14 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 26 Sep 2014.

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