CholeraNCT00349999
Protective Immunity to Human Cholera in Bangladesh
An observational study of Cholera, run by National Institute of Allergy and Infectious Diseases (NIAID) at 1 site in Bangladesh.
Trial summary
The purpose of this study is to better understand how the body fights and protects against cholera. Two hundered fifty people presenting to the International Centre for Diarrhoeal Diseases Research, Bangladesh, admitted with acute cholera, 50 of whom (healthy, nonpregnant, 18-45 year olds) will be enrolled in this… Read more about this study
- Who is it for?
- Ages 18 to 45 years
- Conditions the study is for
- Cholera
- How many people
- 125 participants
- Where
- 1 siteBangladesh
- Study dates
- Jun 2008to Dec 2012
- Phase
- Observational
- 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 18 to 45 years
- All sexes
- No healthy volunteers
- Adult
Study population: 18 males and nonpregnant females, without comorbid conditions, ranging from 18 to 45 years of age, inclusive, who are admitted to the International Centre for Diarrhoeal Research, Bangladesh (ICDDR,B) with acute cholera.
Who may be able to join
- For the esophagogastroduodenoscopy (EGD) substudy of 50 study participants
- Admission to the International Centre for Diarrhoeal Diseases Research, Bangladesh (ICDDR,B) with acute cholera
- Male or nonpregnant female [pregnancy will be excluded by urine human chorionic gonadotropin (HCG) testing]
- Age 18 to 45 years, inclusive
- Residence in Dhaka city
- Provision of informed consent for enrollment in study
- Expressed interest and availability to fulfill the study requirements
Who cannot join
- For the esophagogastroduodenoscopy (EGD) substudy of 50 study participants
- Participation in any other investigational drug, device or vaccine trial at present or within the past 30 days
- Known allergy to midazolam or topical anesthetics
- Presence of comorbid conditions, including:
- heart disease
- pulmonary disease
Show all 15Show fewer
- liver disease
- kidney disease
- bleeding disorder
- neurologic disorder
- an additional intestinal disorder
- pregnancy
- anemia (hemoglobin < 12 g/dl for males or < 11 g/dl for female)
- hypotension (systolic blood pressure less than or equal to 85 mm Hg or diastolic blood pressure less than or equal to 55 mm Hg, measured in the supine position once just prior to procedure)
- hypertension (systolic blood pressure greater than or equal to 150 mm Hg or diastolic blood pressure greater than or equal to 90 mm Hg, measured in the supine position once just prior to procedure)
Trial locations and contacts
1 site in 1 country.
Bangladesh1 site
Dhaka Hospital - International Centre for Diarrhoeal Disease Research, Bangladesh
Dhaka, 1000
About this study
Official title: Protective Immunity to Human Cholera in Bangladesh-EGD Substudy
The purpose of this study is to better understand how the body fights and protects against cholera. Two hundered fifty people presenting to the International Centre for Diarrhoeal Diseases Research, Bangladesh, admitted with acute cholera, 50 of whom (healthy, nonpregnant, 18-45 year olds) will be enrolled in this substudy of mucosal immunity involving duodenal biopsy. The remainder of the study is observational, involving collection of stool, vomit, and blood samples only. The biopsy requires a flexible tube with a camera be inserted through the mouth into the stomach and intestine. During this procedure, small samples will be collected from the intestine. The study includes medical history, physical, blood testing, hospitalization and urine pregnancy testing. This study will last for 5 years and patients will participate for 3 years.
Read the detailed description
Diarrheal diseases are some of the most common causes of morbidity and mortality in the world today. Unfortunately, effective vaccines for most of the infectious causes of diarrhea are not yet available. Vibrio cholerae (V cholerae) is an important infectious cause of severe secretory diarrhea in humans. The purpose of this study is to assess the duration of immune responses in a group of 250 individuals, aged 2-60 years, presenting to the International Centre for Diarrheal Diseases Research, Bangladesh (ICDDR,B) hospital who are admitted with acute cholera. Fifty of these participants will be enrolled in a substudy of mucosal immunity involving duodenal biopsy. This protocol focuses exclusively on the subset of 50 study participants (healthy 18-45 year old non pregnant subjects) enrolled in the substudy of mucosal immunity involving duodenal biopsy. This study is linked to DMID protocol 06-0045. The remainder of the study is observational, involving collection of stool, vomit, and blood samples only (DMID protocol 06-0045). A duodenal biopsy will be performed on enrollment or the next day and at Day 30. Twenty five subjects will undergo a third duodenal biopsy after 6 months of follow-up and 25 subjects will undergo a third duodenal biopsy after 12 months follow-up. The objectives of this study are as follows: to measure immune responses directed against Vibrio cholerae antigens and evaluate the development of anti-V cholerae memory B cells in study participants with cholera; to assess the duration of the immune responses following an episode of cholera; and to correlate the duration of antigen-specific, antibody-secreting cells for various cholera antigens in duodenal tissue with measurements of the duration of immunity based on antibody responses in serum, as well as circulating antigen-specific memory B cells. This is a single site study with a 5 year duration requiring three years of patient participation.
- Conditions
- Cholera
- Keywords
- Vibrio cholerae, Cholera, Bangladesh, esophagogastroduodenoscopy, sub-study
- Medical subject headings
- Cholera
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| 1 | 18 males and non pregnant females, ages 18-45, with acute cholera. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Serum antibody responses to V cholerae Lipopolysaccharide (LPS) and Cholera Toxin, B Subunit (CTB) (and other antigens as needed) on Days 2, 7, and 30 and at Months 3, 6, 9, 12, 18, 24, 30, and 36 following enrollment.
Measured: Days 2, 7, and 30 and at Months 3, 6, 9, 12, 18, 24, 30, and 36 following enrollment.
Mucosal responses to V cholerae LPS and CTB (and other antigens as needed) on Days 2 and 30 (in 50 study participants) and at Month 6 (25 study participants) and Month 12 (25 study participants) following enrollment.
Measured: Days 2 and 30 (in 50 participants) and at Month 6 (25 study participants) and Month 12 (25 study participants) following enrollment.
Memory B and T cell responses to V cholerae LPS and CTB (and other antigens as needed) on Days 2 and 30 and at Months 3, 6, 9, 12, 18, 24, 39, and 36 following enrollment.
Measured: Days 2 and 30 and at Months 3, 6, 9, 12, 18, 24, 39, and 36 following enrollment..
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Jul 2006 (estimated)
- Study startJun 2008
- Primary completionJan 2012
- Study completionDec 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for CholeraStudies of the same condition, open and under way.
- More trials run by National Institute of Allergy and Infectious Diseases (NIAID)The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 125 participants (actual)
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00349999
- Sponsor's protocol ID
- 05-0103
- Other IDs
- 5U01AI058935-14
- Status last verified
- Oct 2009
- First submitted
- 6 Jul 2006
- Last updated
- 9 Sep 2013
- Results posted
- No
Study at a glance
From the registry record, last updated by the sponsor on 9 Sep 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Protective Immunity to Human Cholera in Bangladesh-EGD Substudy
- ClinicalTrials.gov ID
- NCT00349999
- Acronym / sponsor ID
- 05-0103
- Conditions
- Cholera
- Keywords
- Vibrio cholerae, Cholera, Bangladesh, esophagogastroduodenoscopy, sub-study
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 125 participants (actual)
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)US National Institutes of Health
- Study start
- Jun 2008
- Primary completion
- Jan 2012 (actual)
- Study completion
- Dec 2012 (actual)
- First posted
- 10 Jul 2006 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to better understand how the body fights and protects against cholera. Two hundered fifty people presenting to the International Centre for Diarrhoeal Diseases Research, Bangladesh, admitted with acute cholera, 50 of whom (healthy, nonpregnant, 18-45 year olds) will be enrolled in this substudy of mucosal immunity involving duodenal biopsy. The remainder of the study is observational, involving collection of stool, vomit, and blood samples only. The biopsy requires a flexible tube with a camera be inserted through the mouth into the stomach and intestine. During this procedure, small samples will be collected from the intestine. The study includes medical history, physical, blood testing, hospitalization and urine pregnancy testing. This study will last for 5 years and patients will participate for 3 years.
Detailed description
Diarrheal diseases are some of the most common causes of morbidity and mortality in the world today. Unfortunately, effective vaccines for most of the infectious causes of diarrhea are not yet available. Vibrio cholerae (V cholerae) is an important infectious cause of severe secretory diarrhea in humans. The purpose of this study is to assess the duration of immune responses in a group of 250 individuals, aged 2-60 years, presenting to the International Centre for Diarrheal Diseases Research, Bangladesh (ICDDR,B) hospital who are admitted with acute cholera. Fifty of these participants will be enrolled in a substudy of mucosal immunity involving duodenal biopsy. This protocol focuses exclusively on the subset of 50 study participants (healthy 18-45 year old non pregnant subjects) enrolled in the substudy of mucosal immunity involving duodenal biopsy. This study is linked to DMID protocol 06-0045. The remainder of the study is observational, involving collection of stool, vomit, and blood samples only (DMID protocol 06-0045). A duodenal biopsy will be performed on enrollment or the next day and at Day 30. Twenty five subjects will undergo a third duodenal biopsy after 6 months of follow-up and 25 subjects will undergo a third duodenal biopsy after 12 months follow-up. The objectives of this study are as follows: to measure immune responses directed against Vibrio cholerae antigens and evaluate the development of anti-V cholerae memory B cells in study participants with cholera; to assess the duration of the immune responses following an episode of cholera; and to correlate the duration of antigen-specific, antibody-secreting cells for various cholera antigens in duodenal tissue with measurements of the duration of immunity based on antibody responses in serum, as well as circulating antigen-specific memory B cells. This is a single site study with a 5 year duration requiring three years of patient participation.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| 1 | – | –18 males and non pregnant females, ages 18-45, with acute cholera. |
Who may qualify
- Ages
- 18 to 45 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
- Study population
- 18 males and nonpregnant females, without comorbid conditions, ranging from 18 to 45 years of age, inclusive, who are admitted to the International Centre for Diarrhoeal Research, Bangladesh (ICDDR,B) with acute cholera.
Key inclusion criteria (7 listed)
- For the esophagogastroduodenoscopy (EGD) substudy of 50 study participants
- Admission to the International Centre for Diarrhoeal Diseases Research, Bangladesh (ICDDR,B) with acute cholera
- Male or nonpregnant female [pregnancy will be excluded by urine human chorionic gonadotropin (HCG) testing]
- Age 18 to 45 years, inclusive
- Residence in Dhaka city
Key exclusion criteria (15 listed)
- For the esophagogastroduodenoscopy (EGD) substudy of 50 study participants
- Participation in any other investigational drug, device or vaccine trial at present or within the past 30 days
- Known allergy to midazolam or topical anesthetics
- Presence of comorbid conditions, including:
- heart disease
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Serum antibody responses to V cholerae Lipopolysaccharide (LPS) and Cholera Toxin, B Subunit (CTB) (and other antigens as needed) on Days 2, 7, and 30 and at Months 3, 6, 9, 12, 18, 24, 30, and 36 following enrollment.
Time frame: Days 2, 7, and 30 and at Months 3, 6, 9, 12, 18, 24, 30, and 36 following enrollment.
Mucosal responses to V cholerae LPS and CTB (and other antigens as needed) on Days 2 and 30 (in 50 study participants) and at Month 6 (25 study participants) and Month 12 (25 study participants) following enrollment.
Time frame: Days 2 and 30 (in 50 participants) and at Month 6 (25 study participants) and Month 12 (25 study participants) following enrollment.
Memory B and T cell responses to V cholerae LPS and CTB (and other antigens as needed) on Days 2 and 30 and at Months 3, 6, 9, 12, 18, 24, 39, and 36 following enrollment.
Time frame: Days 2 and 30 and at Months 3, 6, 9, 12, 18, 24, 39, and 36 following enrollment..
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Sep 2013.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Cholera, run by National Institute of Allergy and Infectious Diseases (NIAID) 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 7 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: finished, as of the sponsor's last update on 9 Sep 2013. 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.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Serum antibody responses to V cholerae Lipopolysaccharide (LPS) and Cholera Toxin, B Subunit (CTB) (and other antigens as needed) on Days 2, 7, and 30 and at Months 3, 6, 9, 12, 18, 24, 30, and 36 following enrollment. (time frame: Days 2, 7, and 30 and at Months 3, 6, 9, 12, 18, 24, 30, and 36 following enrollment.). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 9 Sep 2013.