DysenteryPhase 2/3NCT02280044
Efficacy of Rifaximin in Preventing Campylobacteriosis
A Phase 2/3 study testing Rifaximin intervention in people with Dysentery and Diarrhea, run by Johns Hopkins Bloomberg School of Public Health at 1 site in United States.
Trial summary
This study is a randomized, double-blinded, placebo-controlled, in-patient trial evaluating the prophylactic efficacy of rifaximin against campylobacteriosis following challenge with C. jejuni. Read more about this study
- Who is it for?
- Ages 18 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Dysentery, Diarrhea, Enteric Campylobacteriosis
- What is being tested?
- Rifaximin intervention
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 30 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2014to 9 Aug 2016
- Phase
- Phase 2/3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Male or female between 18 and 50 years of age, inclusive
- General good health, without significant medical illness, abnormal physical examination findings or clinically significant laboratory abnormalities, as determined by the PI (may consult with the Research Monitor on a case-by-case basis)
- Demonstrate comprehension of the protocol procedures and knowledge of Campylobacter illness by passing a written examination (pass grade ≥ 70%)
- Willing to participate after informed consent obtained
- Available for all planned follow-up visits and remain available for clinic visits (for examination, blood draws and stool collection) and monitoring for 90 days post-challenge and by phone for 180 days post-challenge
- If the subject is female, she is eligible to enter if she is of:
- Non-childbearing potential (i.e., physiologically incapable of becoming pregnant, including any female who is post-menopausal. For purposes of this study, postmenopausal is defined as one year without menses); or must have documentation of having undergone tubal ligation or hysterectomy. OR
- Childbearing potential; has a negative serum pregnancy test at screening and a negative urine pregnancy test on admission (Study Day -1), and agrees to the use of an efficacious hormonal or barrier method of birth control during the study, abstinence is acceptable
Who cannot join
- General health/issues
- Presence of a significant medical condition (e.g., psychiatric conditions; gastrointestinal disease, such as peptic ulcer,symptoms or evidence of active gastritis/dyspepsia, inflammatory bowel disease, irritable bowel syndrome (as defined by the Rome III criteria or medical diagnosis); alcohol or illicit drug abuse/dependency) or laboratory abnormalities which in the opinion of the investigator preclude participation in the study
- Evidence of Immunoglobulin A deficiency (serum IgA < 7 mg/dL or below the limit of detection of assay)
- Positive serology results for HIV, HBsAg, or Hepatitis C virus antibodies
- Positive urine toxicology screen
- Significant abnormalities in screening laboratory hematology or serum chemistry, as determined by PI or PI in consultation with the Research Monitor and sponsor
Show all 9Show fewer
- Use of any medication known to affect the immune function (e.g., corticosteroids and others) within 30 days preceding receipt of the challenge inoculum or planned to be used during the active study period
- Nursing mother on the day of admittance to the inpatient unit
- Study-specific exclusionary conditions based on potential increased risk or complicating outcome ascertainment. (See protocol details for complete list of exclusions.)
Trial locations and contacts
1 site in 1 country.
United States1 site
Center for Immunization Research, Johns Hopkins Bloomberg School of Public Heatlh
Baltimore, Maryland, 21205
About this study
Official title: Double Blind, Placebo-Controlled Trial Assessing the Efficacy of Rifaximin in Preventing Campylobacteriosis in Subjects Challenged With Campylobacter Jejuni
This study is a randomized, double-blinded, placebo-controlled, in-patient trial evaluating the prophylactic efficacy of rifaximin against campylobacteriosis following challenge with C. jejuni.
Read the detailed description
30 healthy volunteers (2 of these were planned alternates) gave informed consent and were enrolled to participate in a study to determine the efficacy of prophylactic rifaximin in preventing diarrheal illness following challenge with C. jejuni, strain CG8421. Volunteers were screened for inclusion and exclusion criteria and were admitted to the inpatient unit of the Center for Immunization Research at Johns Hopkins University. Volunteers were treated with rifaximin or placebo in a double blind manner for four days, beginning the day prior to challenge. On the day of challenge, the volunteers were given 5x10(5) C. jejuni with bicarbonate buffer and were then monitored and treated for any symptoms. Stools were cultured daily for the excretion of C. jejuni and all subjects were treated with antibiotics to insure that the challenge strain has cleared prior to to discharge. Subjects were followed for six months following the inpatient phase to detect adverse events following the study.
- Conditions
- Dysentery, Diarrhea, Enteric Campylobacteriosis
- Being tested
- Rifaximin intervention, Placebo intervention
- Keywords
- Campylobacter jejuni, rifaximin, antibiotic prophylaxis, dysentery, diarrhea
- Medical subject headings
- Dysentery, Diarrhea, Campylobacter Infections
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Rifaximin interventionBiological
Rifaximin administered then Challenge with C jejuni
Placebo interventionBiological
Placebo administered then Challenge with C jejuni
| Study group | Role | What they receive |
|---|---|---|
| rifaximin | Experimental | Subjects receiving rifaximin prophylaxis will be challenged with C. jejuni Receives: Biological: Rifaximin intervention |
| placebo | Placebo comparator | Subjects receiving placebo will be challenged with C. jejuni Receives: Biological: Placebo intervention |
What is being measured
The primary outcome is the main question the study is designed to answer.
Campylobacteriosis
A clinical illness meeting at least one of the following patterns:
- Moderate to severe diarrhea.
- Fever (present on at least 2 occasions, at least 20 minutes apart) without diarrhea, plus an associated symptom (nausea, vomiting, abdominal cramps, tenesmus, or gross blood in ≥ 2 stools); with consideration of potential alternative diagnosis per clinical investigator based on illness time course and associated symptoms.
Measured: 120 hours after challenge
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted31 Oct 2014 (estimated)
- Study startOct 2014
- Primary completion9 Aug 2016
- Study completion9 Aug 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (13)Papers the sponsor has linked to this study.
- Other trials for DysenteryStudies of the same condition, open and under way.
- More trials run by Johns Hopkins Bloomberg School of Public HealthThe 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
- Interventional
- Phase
- Phase 2/3
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- Johns Hopkins Bloomberg School of Public Health
- Sponsor type
- University, hospital or other
- Collaborators
- Naval Medical Research Center, Uniformed Services University of the Health Sciences
- Responsible party
- Sponsor
- Investigators
- Kawsar Talaat, M.D., Principal investigator, Johns Hopkins Bloomberg School of Public Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02280044
- Sponsor's protocol ID
- CIR296
- Status last verified
- Oct 2018
- First submitted
- 29 Oct 2014
- Last updated
- 20 Nov 2018
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
Publications
Kirkpatrick BD, Lyon CE, Porter CK, Maue AC, Guerry P, Pierce KK, Carmolli MP, Riddle MS, Larsson CJ, Hawk D, Dill EA, Fingar A, Poly F, Fimlaid KA, Hoq F, Tribble DR. Lack of homologous protection against Campylobacter jejuni CG8421 in a human challenge model. Clin Infect Dis. 2013 Oct;57(8):1106-13. doi: 10.1093/cid/cit454. Epub 2013 Jul 9.
PubMed 23840001Riddle MS, Gutierrez RL, Verdu EF, Porter CK. The chronic gastrointestinal consequences associated with campylobacter. Curr Gastroenterol Rep. 2012 Oct;14(5):395-405. doi: 10.1007/s11894-012-0278-0.
PubMed 22864805Tribble DR, Baqar S, Scott DA, Oplinger ML, Trespalacios F, Rollins D, Walker RI, Clements JD, Walz S, Gibbs P, Burg EF 3rd, Moran AP, Applebee L, Bourgeois AL. Assessment of the duration of protection in Campylobacter jejuni experimental infection in humans. Infect Immun. 2010 Apr;78(4):1750-9. doi: 10.1128/IAI.01021-09. Epub 2010 Jan 19.
PubMed 20086085Tribble DR, Baqar S, Carmolli MP, Porter C, Pierce KK, Sadigh K, Guerry P, Larsson CJ, Rockabrand D, Ventone CH, Poly F, Lyon CE, Dakdouk S, Fingar A, Gilliland T, Daunais P, Jones E, Rymarchyk S, Huston C, Darsley M, Kirkpatrick BD. Campylobacter jejuni strain CG8421: a refined model for the study of Campylobacteriosis and evaluation of Campylobacter vaccines in human subjects. Clin Infect Dis. 2009 Nov 15;49(10):1512-9. doi: 10.1086/644622.
PubMed 19842970Poly F, Read TD, Chen YH, Monteiro MA, Serichantalergs O, Pootong P, Bodhidatta L, Mason CJ, Rockabrand D, Baqar S, Porter CK, Tribble D, Darsley M, Guerry P. Characterization of two Campylobacter jejuni strains for use in volunteer experimental-infection studies. Infect Immun. 2008 Dec;76(12):5655-67. doi: 10.1128/IAI.00780-08. Epub 2008 Sep 22.
PubMed 18809665Flores J, Dupont HL, Jiang ZD, Okhuysen PC, Melendez-Romero JH, Gonzalez-Estrada A, Carrillo I, Paredes M. A randomized, double-blind, pilot study of rifaximin 550 mg versus placebo in the prevention of travelers' diarrhea in Mexico during the dry season. J Travel Med. 2011 Sep-Oct;18(5):333-6. doi: 10.1111/j.1708-8305.2011.00549.x. Epub 2011 Aug 1.
PubMed 21896097Martinez-Sandoval F, Ericsson CD, Jiang ZD, Okhuysen PC, Romero JH, Hernandez N, Forbes WP, Shaw A, Bortey E, DuPont HL. Prevention of travelers' diarrhea with rifaximin in US travelers to Mexico. J Travel Med. 2010 Mar-Apr;17(2):111-7. doi: 10.1111/j.1708-8305.2009.00385.x.
PubMed 20412178Steffen R, Sack DA, Riopel L, Jiang ZD, Sturchler M, Ericsson CD, Lowe B, Waiyaki P, White M, DuPont HL. Therapy of travelers' diarrhea with rifaximin on various continents. Am J Gastroenterol. 2003 May;98(5):1073-8. doi: 10.1111/j.1572-0241.2003.07283.x.
PubMed 12809830Infante RM, Ericsson CD, Jiang ZD, Ke S, Steffen R, Riopel L, Sack DA, DuPont HL. Enteroaggregative Escherichia coli diarrhea in travelers: response to rifaximin therapy. Clin Gastroenterol Hepatol. 2004 Feb;2(2):135-8. doi: 10.1016/s1542-3565(03)00322-7.
PubMed 15017618Armstrong AW, Ulukan S, Weiner M, Mostafa M, Shaheen H, Nakhla I, Tribble DR, Riddle MS. A randomized, double-blind, placebo-controlled study evaluating the efficacy and safety of rifaximin for the prevention of travelers' diarrhea in US military personnel deployed to Incirlik Air Base, Incirlik, Turkey. J Travel Med. 2010 Nov-Dec;17(6):392-4. doi: 10.1111/j.1708-8305.2010.00462.x.
PubMed 21050319Dupont HL, Jiang ZD, Belkind-Gerson J, Okhuysen PC, Ericsson CD, Ke S, Huang DB, Dupont MW, Adachi JA, De La Cabada FJ, Taylor DN, Jaini S, Martinez Sandoval F. Treatment of travelers' diarrhea: randomized trial comparing rifaximin, rifaximin plus loperamide, and loperamide alone. Clin Gastroenterol Hepatol. 2007 Apr;5(4):451-6. doi: 10.1016/j.cgh.2007.02.004. Epub 2007 Mar 26.
PubMed 17382603DuPont HL, Jiang ZD, Ericsson CD, Adachi JA, Mathewson JJ, DuPont MW, Palazzini E, Riopel LM, Ashley D, Martinez-Sandoval F. Rifaximin versus ciprofloxacin for the treatment of traveler's diarrhea: a randomized, double-blind clinical trial. Clin Infect Dis. 2001 Dec 1;33(11):1807-15. doi: 10.1086/323814. Epub 2001 Oct 23.
PubMed 11692292Rimmer JE, Harro C, Sack DA, Talaat KR, Gutierrez RL, DeNearing B, Brubaker J, Laird RM, Poly F, Maue AC, Jaep K, Alcala A, Mochalova Y, Gariepy CL, Chakraborty S, Guerry P, Tribble DR, Porter CK, Riddle MS. Rifaximin Fails to Prevent Campylobacteriosis in the Human Challenge Model: A Randomized, Double-Blind, Placebo-Controlled Trial. Clin Infect Dis. 2018 Apr 17;66(9):1435-1441. doi: 10.1093/cid/cix1014.
PubMed 29145631
Study at a glance
From the registry record, last updated by the sponsor on 20 Nov 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Double Blind, Placebo-Controlled Trial Assessing the Efficacy of Rifaximin in Preventing Campylobacteriosis in Subjects Challenged With Campylobacter Jejuni
- ClinicalTrials.gov ID
- NCT02280044
- Acronym / sponsor ID
- CIR296
- Conditions
- Dysentery, Diarrhea, Enteric Campylobacteriosis
- Keywords
- Campylobacter jejuni, rifaximin, antibiotic prophylaxis, dysentery, diarrhea
- Phase
- Phase 2/3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- Johns Hopkins Bloomberg School of Public HealthUniversity, hospital or other
- Collaborators
- Naval Medical Research Center, Uniformed Services University of the Health Sciences
- Study start
- Oct 2014
- Primary completion
- 9 Aug 2016 (actual)
- Study completion
- 9 Aug 2016 (actual)
- First posted
- 31 Oct 2014 (estimated)
- Results
- Posted 20 Nov 2018
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study is a randomized, double-blinded, placebo-controlled, in-patient trial evaluating the prophylactic efficacy of rifaximin against campylobacteriosis following challenge with C. jejuni.
Detailed description
30 healthy volunteers (2 of these were planned alternates) gave informed consent and were enrolled to participate in a study to determine the efficacy of prophylactic rifaximin in preventing diarrheal illness following challenge with C. jejuni, strain CG8421. Volunteers were screened for inclusion and exclusion criteria and were admitted to the inpatient unit of the Center for Immunization Research at Johns Hopkins University. Volunteers were treated with rifaximin or placebo in a double blind manner for four days, beginning the day prior to challenge. On the day of challenge, the volunteers were given 5x10(5) C. jejuni with bicarbonate buffer and were then monitored and treated for any symptoms. Stools were cultured daily for the excretion of C. jejuni and all subjects were treated with antibiotics to insure that the challenge strain has cleared prior to to discharge. Subjects were followed for six months following the inpatient phase to detect adverse events following the study.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| rifaximin | Experimental | Biological: Rifaximin interventionSubjects receiving rifaximin prophylaxis will be challenged with C. jejuni |
| placebo | Placebo comparator | Biological: Placebo interventionSubjects receiving placebo will be challenged with C. jejuni |
Who may qualify
- Ages
- 18 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (8 listed)
- Male or female between 18 and 50 years of age, inclusive
- General good health, without significant medical illness, abnormal physical examination findings or clinically significant laboratory abnormalities, as determined by the PI (may consult with the Research Monitor on a case-by-case basis)
- Demonstrate comprehension of the protocol procedures and knowledge of Campylobacter illness by passing a written examination (pass grade ≥ 70%)
- Willing to participate after informed consent obtained
- Available for all planned follow-up visits and remain available for clinic visits (for examination, blood draws and stool collection) and monitoring for 90 days post-challenge and by phone for 180 days post-challenge
Key exclusion criteria (9 listed)
- General health/issues
- Presence of a significant medical condition (e.g., psychiatric conditions; gastrointestinal disease, such as peptic ulcer,symptoms or evidence of active gastritis/dyspepsia, inflammatory bowel disease, irritable bowel syndrome (as defined by the Rome III criteria or medical diagnosis); alcohol or illicit drug abuse/dependency) or laboratory abnormalities which in the opinion of the investigator preclude participation in the study
- Evidence of Immunoglobulin A deficiency (serum IgA < 7 mg/dL or below the limit of detection of assay)
- Positive serology results for HIV, HBsAg, or Hepatitis C virus antibodies
- Positive urine toxicology screen
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Rifaximin interventionRifaximin administered then Challenge with C jejuni | Biological | rifaximin |
| Placebo interventionPlacebo administered then Challenge with C jejuni | Biological | placebo |
Primary outcome
Campylobacteriosis
Time frame: 120 hours after challenge
A clinical illness meeting at least one of the following patterns: * Moderate to severe diarrhea. * Fever (present on at least 2 occasions, at least 20 minutes apart) without diarrhea, plus an associated symptom (nausea, vomiting, abdominal cramps, tenesmus, or gross blood in ≥ 2 stools); with consideration of potential alternative diagnosis per clinical investigator based on illness time course and associated symptoms.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 Nov 2018.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Results publication: PubMed 23840001Kirkpatrick BD, Lyon CE, Porter CK, Maue AC, Guerry P, Pierce KK, Carmolli MP, Riddle MS, Larsson CJ, Hawk D, Dill EA, Fingar A, Poly F, Fimlaid KA, Hoq F, Tribble DR. Lack of homologous protection against Campylobacter jejuni CG8421 in a human challenge model. Clin Infect Dis. 2013 Oct;57(8):1106-13. doi: 10.1093/cid/cit454. Epub 2013 Jul 9.
- Results publication: PubMed 22864805Riddle MS, Gutierrez RL, Verdu EF, Porter CK. The chronic gastrointestinal consequences associated with campylobacter. Curr Gastroenterol Rep. 2012 Oct;14(5):395-405. doi: 10.1007/s11894-012-0278-0.
- Results publication: PubMed 20086085Tribble DR, Baqar S, Scott DA, Oplinger ML, Trespalacios F, Rollins D, Walker RI, Clements JD, Walz S, Gibbs P, Burg EF 3rd, Moran AP, Applebee L, Bourgeois AL. Assessment of the duration of protection in Campylobacter jejuni experimental infection in humans. Infect Immun. 2010 Apr;78(4):1750-9. doi: 10.1128/IAI.01021-09. Epub 2010 Jan 19.
- Results publication: PubMed 19842970Tribble DR, Baqar S, Carmolli MP, Porter C, Pierce KK, Sadigh K, Guerry P, Larsson CJ, Rockabrand D, Ventone CH, Poly F, Lyon CE, Dakdouk S, Fingar A, Gilliland T, Daunais P, Jones E, Rymarchyk S, Huston C, Darsley M, Kirkpatrick BD. Campylobacter jejuni strain CG8421: a refined model for the study of Campylobacteriosis and evaluation of Campylobacter vaccines in human subjects. Clin Infect Dis. 2009 Nov 15;49(10):1512-9. doi: 10.1086/644622.
- Results publication: PubMed 18809665Poly F, Read TD, Chen YH, Monteiro MA, Serichantalergs O, Pootong P, Bodhidatta L, Mason CJ, Rockabrand D, Baqar S, Porter CK, Tribble D, Darsley M, Guerry P. Characterization of two Campylobacter jejuni strains for use in volunteer experimental-infection studies. Infect Immun. 2008 Dec;76(12):5655-67. doi: 10.1128/IAI.00780-08. Epub 2008 Sep 22.
- Results publication: PubMed 21896097Flores J, Dupont HL, Jiang ZD, Okhuysen PC, Melendez-Romero JH, Gonzalez-Estrada A, Carrillo I, Paredes M. A randomized, double-blind, pilot study of rifaximin 550 mg versus placebo in the prevention of travelers' diarrhea in Mexico during the dry season. J Travel Med. 2011 Sep-Oct;18(5):333-6. doi: 10.1111/j.1708-8305.2011.00549.x. Epub 2011 Aug 1.
- Results publication: PubMed 20412178Martinez-Sandoval F, Ericsson CD, Jiang ZD, Okhuysen PC, Romero JH, Hernandez N, Forbes WP, Shaw A, Bortey E, DuPont HL. Prevention of travelers' diarrhea with rifaximin in US travelers to Mexico. J Travel Med. 2010 Mar-Apr;17(2):111-7. doi: 10.1111/j.1708-8305.2009.00385.x.
- Results publication: PubMed 12809830Steffen R, Sack DA, Riopel L, Jiang ZD, Sturchler M, Ericsson CD, Lowe B, Waiyaki P, White M, DuPont HL. Therapy of travelers' diarrhea with rifaximin on various continents. Am J Gastroenterol. 2003 May;98(5):1073-8. doi: 10.1111/j.1572-0241.2003.07283.x.
- Results publication: PubMed 15017618Infante RM, Ericsson CD, Jiang ZD, Ke S, Steffen R, Riopel L, Sack DA, DuPont HL. Enteroaggregative Escherichia coli diarrhea in travelers: response to rifaximin therapy. Clin Gastroenterol Hepatol. 2004 Feb;2(2):135-8. doi: 10.1016/s1542-3565(03)00322-7.
- Results publication: PubMed 21050319Armstrong AW, Ulukan S, Weiner M, Mostafa M, Shaheen H, Nakhla I, Tribble DR, Riddle MS. A randomized, double-blind, placebo-controlled study evaluating the efficacy and safety of rifaximin for the prevention of travelers' diarrhea in US military personnel deployed to Incirlik Air Base, Incirlik, Turkey. J Travel Med. 2010 Nov-Dec;17(6):392-4. doi: 10.1111/j.1708-8305.2010.00462.x.
- Results publication: PubMed 17382603Dupont HL, Jiang ZD, Belkind-Gerson J, Okhuysen PC, Ericsson CD, Ke S, Huang DB, Dupont MW, Adachi JA, De La Cabada FJ, Taylor DN, Jaini S, Martinez Sandoval F. Treatment of travelers' diarrhea: randomized trial comparing rifaximin, rifaximin plus loperamide, and loperamide alone. Clin Gastroenterol Hepatol. 2007 Apr;5(4):451-6. doi: 10.1016/j.cgh.2007.02.004. Epub 2007 Mar 26.
- Results publication: PubMed 11692292DuPont HL, Jiang ZD, Ericsson CD, Adachi JA, Mathewson JJ, DuPont MW, Palazzini E, Riopel LM, Ashley D, Martinez-Sandoval F. Rifaximin versus ciprofloxacin for the treatment of traveler's diarrhea: a randomized, double-blind clinical trial. Clin Infect Dis. 2001 Dec 1;33(11):1807-15. doi: 10.1086/323814. Epub 2001 Oct 23.
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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.
Kawsar Talaat, M.D. principal investigator
Johns Hopkins Bloomberg School of Public Health
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2/3 study testing Rifaximin intervention in people with Dysentery and Diarrhea, run by Johns Hopkins Bloomberg School of Public Health at 1 site in United States.
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 8 inclusion and 9 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 20 Nov 2018. 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 United States. 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. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined 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.
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 20 Nov 2018). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Campylobacteriosis (time frame: 120 hours after challenge). 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 NCT02280044, which also lists 13 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 20 Nov 2018.