Zinc Dosing Trial - Does Dose Reduction Reduce Side Effects But Retain Efficacy in Diarrhoea Management

NCT ID: NCT03078842

Last Updated: 2020-10-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

4500 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-01-23

Study Completion Date

2020-02-01

Brief Summary

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Diarrhoea continues to be a major cause of child deaths. Current treatment of acute watery diarrhoea includes oral rehydration solution (ORS), zinc and continued feeding. The use of zinc is based on a number of studies that showed that zinc reduces the duration and severity of diarrhoea. The recommended dose of zinc in 6-59 month old children is 20mg/day for 10-14 days. This dose is associated with an increased risk of vomiting. No dosing studies are available to determine the optimal dose of zinc, which while maintaining the benefits also has a low risk of vomiting.

The investigators will conduct a double-blind randomized controlled trial of three doses of zinc (20mg/day, 10mg/day and 5mg/day) in two settings - one in Sub-Saharan Africa and the other in South Asia. The study population will be 4500 children with diarrhoea of less than 72 hours duration who are aged 6-59 months. They will be recruited from outpatient health facilities. All enrolled children will receive ORS and continued feeding as recommended by the World Health Organization. Those allocated to the standard zinc dose will receive an oral dispersible tablet with 20mg zinc daily for 14 days. Those allocated to lower dose zinc will receive identical tablets with either 10mg or 5mg zinc daily for 14 days. Enrolled children will be followed by until recovery from diarrhoea or 15 days after enrolment, whichever is later. In addition, study children will be assessed again at thirty (30), forty-five (45), and sixty (60) days to estimate impact on post illness outcomes. Primary outcomes will be mean duration of diarrhoea, proportion of episodes that last longer than 5 days, mean number of stools and proportion of children with vomiting.

Detailed Description

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Conditions

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Diarrhea

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
All participants will get dispersible zinc tablets that, contain either 20 mg, 10 mg, or 5 mg of zinc. All tablets look and taste the same. Randomization and tablet package labelling was done in Geneva, and no-one at the trial sites knows the actual zinc content of tablets packaged for each participant number.

Study Groups

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Zinc-20

Zinc tablets, 20 mg per day

Group Type ACTIVE_COMPARATOR

Zinc tablets, 20 mg per day

Intervention Type DIETARY_SUPPLEMENT

Participants will receive rehydration, dietary counseling, and 1 tablet per day for 14 days of zinc-tablets, each of which contains 20 mg of zinc

Zinc-10

Zinc tablets, 10 mg per day

Group Type EXPERIMENTAL

Zinc tablets, 10 mg per day

Intervention Type DIETARY_SUPPLEMENT

Participants will receive rehydration, dietary counseling, and 1 tablet per day for 14 days of zinc-tablets, each of which contains 10 mg of zinc

Zinc-05

Zinc tablets, 5 mg per day

Group Type EXPERIMENTAL

Zinc tablets, 5 mg per day

Intervention Type DIETARY_SUPPLEMENT

Participants will receive rehydration, dietary counseling, and 1 tablet per day for 14 days of zinc-tablets, each of which contains 5 mg of zinc

Interventions

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Zinc tablets, 20 mg per day

Participants will receive rehydration, dietary counseling, and 1 tablet per day for 14 days of zinc-tablets, each of which contains 20 mg of zinc

Intervention Type DIETARY_SUPPLEMENT

Zinc tablets, 10 mg per day

Participants will receive rehydration, dietary counseling, and 1 tablet per day for 14 days of zinc-tablets, each of which contains 10 mg of zinc

Intervention Type DIETARY_SUPPLEMENT

Zinc tablets, 5 mg per day

Participants will receive rehydration, dietary counseling, and 1 tablet per day for 14 days of zinc-tablets, each of which contains 5 mg of zinc

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* 6 to 59 completed months of age
* Acute diarrhoea of less than 3 days at the time of screening or dysentery, defined as visible blood in the stool, of less than 3 days at the time of screening
* Likely to stay within the study area for the next 2 months
* Written informed consent from caretaker

Exclusion Criteria

* Presence of severe acute malnutrition (WHZ\<-3 or oedema)
* Presence of severe dehydration that cannot be corrected in 4 to 6 hours
* Signs of severe pneumonia (WHO definition of pneumonia with danger signs), sepsis, rapid diagnostic test (RDT) -confirmed malaria or other severe illness
* Previously or currently enrolled in the study
* Currently enrolled in another study
* Other child currently enrolled in the study in the same household
* Not intending to remain in study area for the duration of the study
* Parents refuse participation in the study
Minimum Eligible Age

6 Months

Maximum Eligible Age

59 Months

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Center for Public Health Kinetics

OTHER

Sponsor Role collaborator

Muhimbili University of Health and Allied Sciences

OTHER

Sponsor Role collaborator

Boston Children's Hospital

OTHER

Sponsor Role collaborator

Ayesha De Costa

OTHER

Sponsor Role lead

Responsible Party

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Ayesha De Costa

Scientist

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Rajiv Bahl, MBBS

Role: STUDY_DIRECTOR

World Health Organization

Locations

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Centre for Public Health Kinetics

New Delhi, , India

Site Status

Muhimbili University of Health and Allied Sciences

Dar es Salaam, , Tanzania

Site Status

Countries

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India Tanzania

References

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Kisenge R, Dhingra U, Rees CA, Liu E, Dutta A, Saikat D, Dhingra P, Somji S, Sudfeld C, Simon J, Ashorn P, Sazawal S, Duggan CP, Manji K. Risk factors for moderate acute malnutrition among children with acute diarrhoea in India and Tanzania: a secondary analysis of data from a randomized trial. BMC Pediatr. 2024 Jan 19;24(1):56. doi: 10.1186/s12887-024-04551-2.

Reference Type DERIVED
PMID: 38238656 (View on PubMed)

Dhingra U, Kisenge R, Sudfeld CR, Dhingra P, Somji S, Dutta A, Bakari M, Deb S, Devi P, Liu E, Chauhan A, Kumar J, Semwal OP, Aboud S, Bahl R, Ashorn P, Simon J, Duggan CP, Sazawal S, Manji K. Lower-Dose Zinc for Childhood Diarrhea - A Randomized, Multicenter Trial. N Engl J Med. 2020 Sep 24;383(13):1231-1241. doi: 10.1056/NEJMoa1915905.

Reference Type DERIVED
PMID: 32966722 (View on PubMed)

Somji SS, Dhingra P, Dhingra U, Dutta A, Devi P, Kumar J, Deb S, Semwal OP, Sazawal S, Manji K, Kisenge R, Bakari M, Aboud S, Liu E, Sudfeld C, Duggan CP, Ashorn P, Bahl R, Simon JL. Effect of dose reduction of supplemental zinc for childhood diarrhoea: study protocol for a double-masked, randomised controlled trial in India and Tanzania. BMJ Paediatr Open. 2019 Apr 24;3(1):e000460. doi: 10.1136/bmjpo-2019-000460. eCollection 2019.

Reference Type DERIVED
PMID: 31206083 (View on PubMed)

Other Identifiers

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ERC.0002738

Identifier Type: -

Identifier Source: org_study_id

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