Helicobacter Pylori InfectionPhase 4NCT01464060
14-day Quadruple Hybrid vs. Concomitant Therapies for Helicobacter Pylori Eradication
A Phase 4 study testing PPI, amoxicillin, metronidazole and clarithromycin in people with Helicobacter Pylori Infection, run by Infante, Javier Molina, M.D. at 4 sites in 2 countries.
Trial summary
Helicobacter pylori (H. pylori) infects approximately 50% of the adult population and is well recognized as the main cause of gastritis, peptic ulcer disease and gastric cancer. The cure of the H. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Helicobacter Pylori Infection
- What is being tested?
- PPI, amoxicillin, metronidazole and clarithromycin
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 400 participants
- Where
- 4 sitesin 2 countries
- Study dates
- Sep 2011to Jan 2013
- Phase
- Phase 4
- 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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients with dyspepsia or peptic gastroduodenal ulcer for whom eradication treatment is indicated.
- Requirement of confirmation of the diagnosis of H. pylori infection by at least one positive test out of the following: breath test, histology, rapid urease test or culture.
Who cannot join
- Age less than 18 years.
- Advanced chronic disease or any other pathology that prevents attending controls and follow up.
- Allergy to any of the antibiotics in the treatment.
- Previous gastric surgery
- Pregnancy and lactation.
- History of alcohol or drug abuse.
- Previous eradication treatment.
- Consumption of antibiotics or bismuth salts during the last 4 weeks
Trial locations and contacts
4 sites in 2 countries.
4 sites in 2 countries
Spain3 sites, 3 recruiting
- Recruiting
Hospital San Pedro de Alcantara
Cáceres, Caceres, 10003
Javier Molina-Infante, MD, xavi_molina@hotmail.com
Javier Molina-Infante, MD
- Recruiting
Hospital de Merida
Mérida, Badajoz
Liliana Pozzati, MD, santelmo0054@hotmail.com
Liliana Pozzati, MD
- Recruiting
Hospital Virgen del Puerto
Plasencia, Caceres
Elena G Abadia, elenagabadia@hotmail.com
Elena G Abadia
Italy1 site, 1 recruiting
- Recruiting
Azienda Ospedaliera Universitaria
Naples, Napoli
Marco Romano, MD,PhD, marco.romano@unina2.it
Marco Romano
About this study
Official title: Phase 4, Prospective, Randomized Study Comparing 14-day Non-bismuth Quadruple "Hybrid" and "Concomitant" Therapies for Helicobacter Pylori Eradication in Settings With High Clarithromycin Resistance
Helicobacter pylori (H. pylori) infects approximately 50% of the adult population and is well recognized as the main cause of gastritis, peptic ulcer disease and gastric cancer. The cure of the H. pylori infection prevents recurrence of duodenal and gastric ulcer and improves dyspepsia in a significant proportion of cases, so it is cost-effective.
Eradication therapy has changed over time. Recent meta-analyses have that the current global eradication rate after standard triple therapy (STT) is less than 80%. Several European studies have found even lower eradication rates, with 35-40% of cases resulting in treatment failure, probably due to increased resistance to antibiotics in many geographical areas, principally to clarithromycin. The usually recommended pattern in the American and European (Maastricht III) consensus conferences from 2007 has traditionally been triple therapy, composed by the combination of 2 antibiotics (clarithromycin plus amoxicillin or metronidazole) and a proton pump inhibitor (PPI) for 7-14 days. However, triple therapy was discouraged in settings with high rates of clarithromycin resistance (15-20%) and, as such, new strategies in order to improve the efficacy of first-line treatments are required. Treatment failure increases antibiotic resistant strains, leads to a second treatment and a new diagnostic test to confirm eradication. Unfortunately, it remains unknown whether there is room for improvement in these geographical areas using clarithromycin-containing therapies or switching to bismuth quadruple therapy should be followed instead.
Read the detailed description
Justification of the study:
Several non-bismuth quadruple clarithromycin-containing regimens have raised over the last decade aiming to substitute standard triple therapy (STT) for first-line H. pylori eradication therapy. Sequential therapy, introduced in Italy, involves a 5-day induction phase with dual therapy (a PPI every 12 hours and amoxicillin 1g every 12 hours), followed immediately by triple therapy for 5 days with a PPI every 12 hours, metronidazole 500 mg every 12 hours and clarithromycin 500 mg every 12 hours. 10-day sequential therapy proved more effectiveness than STT with excellent treatment compliance and minimal side effects. However, the efficacy of sequential therapy seems to be notably impaired by clarithromycin resistance and dual clarithromycin and metronidazole resistance, which is becoming a common scenario in developed countries.
Other interesting and resurfaced therapeutic alternative is the non-bismuth quadruple therapy (NBQT), also called "concomitant" therapy, which includes a PPI, amoxicillin, clarithromycin and a nitroimidazole, all drugs given concurrently and twice daily. It has also demonstrated its superiority over STT and it could be potential replacement for STT as first-line regimen. However, NBQT might have several advantages over sequential therapy, namely, less complexity for both the patient and the physician, twice the duration of all prescribed antibiotics, a proper validation process worldwide and a higher efficacy over sequential therapy for both clarithromycin and dual-resistant H. pylori. Finally, another recent innovation is the 14-day quadruple clarithromycin-based regimen, so-called the sequential-concomitant "hybrid" therapy, which involves PPI and amoxicillin for 7 days plus a 7-day course of NBQT. Outstanding cure rates close to 100% have been recently reported using this scheme, thereby requiring further consideration.
Therefore it is necessary to make a controlled clinical trial to directly compare NBQT "hybrid" versus "concomitant" therapy in settings with documented high clarithromycin resistance rates. In order to maximize the efficacy of eradication regimens, it would be necessary to extend duration to 14 days and using high-dose PPI (omeprazole 40 mg bid). The results of this study will conclude whether there is still room for clarithromycin-containing regimens in H. pylori eradication even in settings with high antibiotic resistance rates.
- Conditions
- Helicobacter Pylori Infection
- Being tested
- PPI, amoxicillin, metronidazole and clarithromycin
- Keywords
- Helicobacter pylori, Quadruple therapy, Clarithromycin resistance
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PPI, amoxicillin, metronidazole and clarithromycinDrug
Dual therapy for 7 days: 40 mg omeprazole and 1g amoxicillin every 12h. After dual therapy continue with a quadruple therapy for 7 days: 40 mg omeprazole, 1g amoxicillin, 500 mg metronidazole and 500 mg clarithromycin every 12h.
PPI, amoxicillin, metronidazole and clarithromycinDrug
Quadruple therapy for 14 days: 40 mg omeprazole, 1g amoxicillin, 500 mg metronidazole and 500 mg clarithromycin every 12h
| Study group | Role | What they receive |
|---|---|---|
| "Hybrid" therapy | Active comparator | Dual therapy for 7 days: 40 mg omeprazole and 1g amoxicillin every 12h. After dual therapy continue with a quadruple therapy for 7 days: 40 mg omeprazole, 1g amoxicillin, 500 mg metronidazole and 500 mg clarithromycin every 12h. Receives: Drug: PPI, amoxicillin, metronidazole and clarithromycin |
| "Concomitant" therapy | Experimental | Quadruple therapy for 14 days: 40 mg omeprazole, 1g amoxicillin, 500 mg metronidazole and 500 mg clarithromycin every 12h Receives: Drug: PPI, amoxicillin, metronidazole and clarithromycin |
What is being measured
The primary outcome is the main question the study is designed to answer.
"Intention to treat" eradication rates
"Intention-to-treat" eradication of infection.
Measured: 1 year
Secondary outcomes (3)
" Per protocol" eradication rate
" Per protocol" eradication of the infection
Measured: 1 year
Treatment compliance
Measured: 1 year
Number of participants with adverse events
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Nov 2011 (estimated)
- Study startSep 2011
- Primary completionDec 2012 (estimated)
- Study completionJan 2013 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (28)Papers the sponsor has linked to this study.
- Other trials for Helicobacter Pylori InfectionStudies of the same condition, open and under way.
- 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 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 400 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Infante, Javier Molina, M.D.
- Responsible party
- Sponsor
- Investigators
- Javier Molina-Infante, MD, Principal investigator, Hospital San Pedro de Alcantara, Caceres, Spain
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01464060
- Sponsor's protocol ID
- INHIBRICON14
- Status last verified
- Dec 2012
- First submitted
- 25 Oct 2011
- Last updated
- 31 Dec 2012
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Malfertheiner P, Megraud F, O'Morain C, Bazzoli F, El-Omar E, Graham D, Hunt R, Rokkas T, Vakil N, Kuipers EJ. Current concepts in the management of Helicobacter pylori infection: the Maastricht III Consensus Report. Gut. 2007 Jun;56(6):772-81. doi: 10.1136/gut.2006.101634. Epub 2006 Dec 14.
PubMed 17170018Chey WD, Wong BC; Practice Parameters Committee of the American College of Gastroenterology. American College of Gastroenterology guideline on the management of Helicobacter pylori infection. Am J Gastroenterol. 2007 Aug;102(8):1808-25. doi: 10.1111/j.1572-0241.2007.01393.x. Epub 2007 Jun 29.
PubMed 17608775Graham DY, Shiotani A. New concepts of resistance in the treatment of Helicobacter pylori infections. Nat Clin Pract Gastroenterol Hepatol. 2008 Jun;5(6):321-31. doi: 10.1038/ncpgasthep1138. Epub 2008 Apr 29.
PubMed 18446147Megraud F. H pylori antibiotic resistance: prevalence, importance, and advances in testing. Gut. 2004 Sep;53(9):1374-84. doi: 10.1136/gut.2003.022111. No abstract available.
PubMed 15306603Graham DY, Fischbach L. Helicobacter pylori treatment in the era of increasing antibiotic resistance. Gut. 2010 Aug;59(8):1143-53. doi: 10.1136/gut.2009.192757. Epub 2010 Jun 4.
PubMed 20525969Zullo A, De Francesco V, Hassan C, Morini S, Vaira D. The sequential therapy regimen for Helicobacter pylori eradication: a pooled-data analysis. Gut. 2007 Oct;56(10):1353-7. doi: 10.1136/gut.2007.125658. Epub 2007 Jun 12.
PubMed 17566020Jafri NS, Hornung CA, Howden CW. Meta-analysis: sequential therapy appears superior to standard therapy for Helicobacter pylori infection in patients naive to treatment. Ann Intern Med. 2008 Jun 17;148(12):923-31. doi: 10.7326/0003-4819-148-12-200806170-00226. Epub 2008 May 19.
PubMed 18490667Tong JL, Ran ZH, Shen J, Xiao SD. Sequential therapy vs. standard triple therapies for Helicobacter pylori infection: a meta-analysis. J Clin Pharm Ther. 2009 Feb;34(1):41-53. doi: 10.1111/j.1365-2710.2008.00969.x.
PubMed 19125902Gatta L, Vakil N, Leandro G, Di Mario F, Vaira D. Sequential therapy or triple therapy for Helicobacter pylori infection: systematic review and meta-analysis of randomized controlled trials in adults and children. Am J Gastroenterol. 2009 Dec;104(12):3069-79; quiz 1080. doi: 10.1038/ajg.2009.555. Epub 2009 Oct 20.
PubMed 19844205Gisbert JP, Calvet X, O'Connor A, Megraud F, O'Morain CA. Sequential therapy for Helicobacter pylori eradication: a critical review. J Clin Gastroenterol. 2010 May-Jun;44(5):313-25. doi: 10.1097/MCG.0b013e3181c8a1a3.
PubMed 20054285Gisbert JP, Nyssen OP, McNicholl A, et al. Meta-analysis of sequential vs. standard triple therapy for Helicobacter pylori eradication. Helicobacter 2011;16 (Suppl 1):131.
Prieto-Jimenez CA, Cardenas VM, Fischbach LA, Mulla ZD, Rivera JO, Dominguez DC, Graham DY, Ortiz M. Double-blind randomized trial of quadruple sequential Helicobacter pylori eradication therapy in asymptomatic infected children in El Paso, Texas. J Pediatr Gastroenterol Nutr. 2011 Mar;52(3):319-25. doi: 10.1097/MPG.0b013e318206870e.
PubMed 21336156Bontems P, Kalach N, Oderda G, Salame A, Muyshont L, Miendje DY, Raymond J, Cadranel S, Scaillon M. Sequential therapy versus tailored triple therapies for Helicobacter pylori infection in children. J Pediatr Gastroenterol Nutr. 2011 Dec;53(6):646-50. doi: 10.1097/MPG.0b013e318229c769.
PubMed 21701406Molina-Infante J, Perez-Gallardo B, Fernandez-Bermejo M, Hernandez-Alonso M, Vinagre G, Duenas C, Mateos-Rodriguez JM, Gonzalez-Garcia G, Abadia EG, Gisbert JP. Clinical trial: clarithromycin vs. levofloxacin in first-line triple and sequential regimens for Helicobacter pylori eradication. Aliment Pharmacol Ther. 2010 May;31(10):1077-84. doi: 10.1111/j.1365-2036.2010.04274.x. Epub 2010 Feb 20.
PubMed 20180787Choi WH, Park DI, Oh SJ, Baek YH, Hong CH, Hong EJ, Song MJ, Park SK, Park JH, Kim HJ, Cho YK, Sohn CI, Jeon WK, Kim BI. [Effectiveness of 10 day-sequential therapy for Helicobacter pylori eradication in Korea]. Korean J Gastroenterol. 2008 May;51(5):280-4. Korean.
PubMed 18516011
Study at a glance
From the registry record, last updated by the sponsor on 31 Dec 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phase 4, Prospective, Randomized Study Comparing 14-day Non-bismuth Quadruple "Hybrid" and "Concomitant" Therapies for Helicobacter Pylori Eradication in Settings With High Clarithromycin Resistance
- ClinicalTrials.gov ID
- NCT01464060
- Acronym / sponsor ID
- INHIBRICON14
- Conditions
- Helicobacter Pylori Infection
- Keywords
- Helicobacter pylori, Quadruple therapy, Clarithromycin resistance
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 400 participants (estimated)
- Lead sponsor
- Infante, Javier Molina, M.D.
- Study start
- Sep 2011
- Primary completion
- Dec 2012 (estimated)
- Study completion
- Jan 2013 (estimated)
- First posted
- 3 Nov 2011 (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.
Helicobacter pylori (H. pylori) infects approximately 50% of the adult population and is well recognized as the main cause of gastritis, peptic ulcer disease and gastric cancer. The cure of the H. pylori infection prevents recurrence of duodenal and gastric ulcer and improves dyspepsia in a significant proportion of cases, so it is cost-effective.
Eradication therapy has changed over time. Recent meta-analyses have that the current global eradication rate after standard triple therapy (STT) is less than 80%. Several European studies have found even lower eradication rates, with 35-40% of cases resulting in treatment failure, probably due to increased resistance to antibiotics in many geographical areas, principally to clarithromycin. The usually recommended pattern in the American and European (Maastricht III) consensus conferences from 2007 has traditionally been triple therapy, composed by the combination of 2 antibiotics (clarithromycin plus amoxicillin or metronidazole) and a proton pump inhibitor (PPI) for 7-14 days. However, triple therapy was discouraged in settings with high rates of clarithromycin resistance (15-20%) and, as such, new strategies in order to improve the efficacy of first-line treatments are required. Treatment failure increases antibiotic resistant strains, leads to a second treatment and a new diagnostic test to confirm eradication. Unfortunately, it remains unknown whether there is room for improvement in these geographical areas using clarithromycin-containing therapies or switching to bismuth quadruple therapy should be followed instead.
Detailed description
Justification of the study:
Several non-bismuth quadruple clarithromycin-containing regimens have raised over the last decade aiming to substitute standard triple therapy (STT) for first-line H. pylori eradication therapy. Sequential therapy, introduced in Italy, involves a 5-day induction phase with dual therapy (a PPI every 12 hours and amoxicillin 1g every 12 hours), followed immediately by triple therapy for 5 days with a PPI every 12 hours, metronidazole 500 mg every 12 hours and clarithromycin 500 mg every 12 hours. 10-day sequential therapy proved more effectiveness than STT with excellent treatment compliance and minimal side effects. However, the efficacy of sequential therapy seems to be notably impaired by clarithromycin resistance and dual clarithromycin and metronidazole resistance, which is becoming a common scenario in developed countries.
Other interesting and resurfaced therapeutic alternative is the non-bismuth quadruple therapy (NBQT), also called "concomitant" therapy, which includes a PPI, amoxicillin, clarithromycin and a nitroimidazole, all drugs given concurrently and twice daily. It has also demonstrated its superiority over STT and it could be potential replacement for STT as first-line regimen. However, NBQT might have several advantages over sequential therapy, namely, less complexity for both the patient and the physician, twice the duration of all prescribed antibiotics, a proper validation process worldwide and a higher efficacy over sequential therapy for both clarithromycin and dual-resistant H. pylori. Finally, another recent innovation is the 14-day quadruple clarithromycin-based regimen, so-called the sequential-concomitant "hybrid" therapy, which involves PPI and amoxicillin for 7 days plus a 7-day course of NBQT. Outstanding cure rates close to 100% have been recently reported using this scheme, thereby requiring further consideration.
Therefore it is necessary to make a controlled clinical trial to directly compare NBQT "hybrid" versus "concomitant" therapy in settings with documented high clarithromycin resistance rates. In order to maximize the efficacy of eradication regimens, it would be necessary to extend duration to 14 days and using high-dose PPI (omeprazole 40 mg bid). The results of this study will conclude whether there is still room for clarithromycin-containing regimens in H. pylori eradication even in settings with high antibiotic resistance rates.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| "Hybrid" therapy | Active comparator | Drug: PPI, amoxicillin, metronidazole and clarithromycinDual therapy for 7 days: 40 mg omeprazole and 1g amoxicillin every 12h. After dual therapy continue with a quadruple therapy for 7 days: 40 mg omeprazole, 1g amoxicillin, 500 mg metronidazole and 500 mg clarithromycin every 12h. |
| "Concomitant" therapy | Experimental | Drug: PPI, amoxicillin, metronidazole and clarithromycinQuadruple therapy for 14 days: 40 mg omeprazole, 1g amoxicillin, 500 mg metronidazole and 500 mg clarithromycin every 12h |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Patients with dyspepsia or peptic gastroduodenal ulcer for whom eradication treatment is indicated.
- Requirement of confirmation of the diagnosis of H. pylori infection by at least one positive test out of the following: breath test, histology, rapid urease test or culture.
Key exclusion criteria (8 listed)
- Age less than 18 years.
- Advanced chronic disease or any other pathology that prevents attending controls and follow up.
- Allergy to any of the antibiotics in the treatment.
- Previous gastric surgery
- Pregnancy and lactation.
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 |
|---|---|---|
| PPI, amoxicillin, metronidazole and clarithromycinDual therapy for 7 days: 40 mg omeprazole and 1g amoxicillin every 12h. After dual therapy continue with a quadruple therapy for 7 days: 40 mg omeprazole, 1g amoxicillin, 500 mg metronidazole and 500 mg clarithromycin every 12h. | Drug | "Hybrid" therapy |
| PPI, amoxicillin, metronidazole and clarithromycinQuadruple therapy for 14 days: 40 mg omeprazole, 1g amoxicillin, 500 mg metronidazole and 500 mg clarithromycin every 12h | Drug | "Concomitant" therapy |
Primary outcome
"Intention to treat" eradication rates
Time frame: 1 year
"Intention-to-treat" eradication of infection.
3 secondary outcomes
" Per protocol" eradication rate
Time frame: 1 year
Treatment compliance
Time frame: 1 year
Number of participants with adverse events
Time frame: 1 year
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 31 Dec 2012.
- Background: PubMed 17170018Malfertheiner P, Megraud F, O'Morain C, Bazzoli F, El-Omar E, Graham D, Hunt R, Rokkas T, Vakil N, Kuipers EJ. Current concepts in the management of Helicobacter pylori infection: the Maastricht III Consensus Report. Gut. 2007 Jun;56(6):772-81. doi: 10.1136/gut.2006.101634. Epub 2006 Dec 14.
- Background: PubMed 17608775Chey WD, Wong BC; Practice Parameters Committee of the American College of Gastroenterology. American College of Gastroenterology guideline on the management of Helicobacter pylori infection. Am J Gastroenterol. 2007 Aug;102(8):1808-25. doi: 10.1111/j.1572-0241.2007.01393.x. Epub 2007 Jun 29.
- Background: PubMed 18446147Graham DY, Shiotani A. New concepts of resistance in the treatment of Helicobacter pylori infections. Nat Clin Pract Gastroenterol Hepatol. 2008 Jun;5(6):321-31. doi: 10.1038/ncpgasthep1138. Epub 2008 Apr 29.
- Background: PubMed 15306603Megraud F. H pylori antibiotic resistance: prevalence, importance, and advances in testing. Gut. 2004 Sep;53(9):1374-84. doi: 10.1136/gut.2003.022111. No abstract available.
- Background: PubMed 20525969Graham DY, Fischbach L. Helicobacter pylori treatment in the era of increasing antibiotic resistance. Gut. 2010 Aug;59(8):1143-53. doi: 10.1136/gut.2009.192757. Epub 2010 Jun 4.
- Background: PubMed 17566020Zullo A, De Francesco V, Hassan C, Morini S, Vaira D. The sequential therapy regimen for Helicobacter pylori eradication: a pooled-data analysis. Gut. 2007 Oct;56(10):1353-7. doi: 10.1136/gut.2007.125658. Epub 2007 Jun 12.
- Background: PubMed 18490667Jafri NS, Hornung CA, Howden CW. Meta-analysis: sequential therapy appears superior to standard therapy for Helicobacter pylori infection in patients naive to treatment. Ann Intern Med. 2008 Jun 17;148(12):923-31. doi: 10.7326/0003-4819-148-12-200806170-00226. Epub 2008 May 19.
- Background: PubMed 19125902Tong JL, Ran ZH, Shen J, Xiao SD. Sequential therapy vs. standard triple therapies for Helicobacter pylori infection: a meta-analysis. J Clin Pharm Ther. 2009 Feb;34(1):41-53. doi: 10.1111/j.1365-2710.2008.00969.x.
- Background: PubMed 19844205Gatta L, Vakil N, Leandro G, Di Mario F, Vaira D. Sequential therapy or triple therapy for Helicobacter pylori infection: systematic review and meta-analysis of randomized controlled trials in adults and children. Am J Gastroenterol. 2009 Dec;104(12):3069-79; quiz 1080. doi: 10.1038/ajg.2009.555. Epub 2009 Oct 20.
- Background: PubMed 20054285Gisbert JP, Calvet X, O'Connor A, Megraud F, O'Morain CA. Sequential therapy for Helicobacter pylori eradication: a critical review. J Clin Gastroenterol. 2010 May-Jun;44(5):313-25. doi: 10.1097/MCG.0b013e3181c8a1a3.
- BackgroundGisbert JP, Nyssen OP, McNicholl A, et al. Meta-analysis of sequential vs. standard triple therapy for Helicobacter pylori eradication. Helicobacter 2011;16 (Suppl 1):131.
- Background: PubMed 21336156Prieto-Jimenez CA, Cardenas VM, Fischbach LA, Mulla ZD, Rivera JO, Dominguez DC, Graham DY, Ortiz M. Double-blind randomized trial of quadruple sequential Helicobacter pylori eradication therapy in asymptomatic infected children in El Paso, Texas. J Pediatr Gastroenterol Nutr. 2011 Mar;52(3):319-25. doi: 10.1097/MPG.0b013e318206870e.
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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.
Javier Molina-Infante, MD principal investigator
Hospital San Pedro de Alcantara, Caceres, Spain
4 sites in 2 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing PPI, amoxicillin, metronidazole and clarithromycin in people with Helicobacter Pylori Infection, run by Infante, Javier Molina, M.D. at 4 sites in 2 countries.
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 2 inclusion and 8 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: status not confirmed, as of the sponsor's last update on 31 Dec 2012. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 4 sites in Spain, Italy. 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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Javier Molina-Infante, MD (0034627430248, xavi_molina@hotmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
"Intention to treat" eradication rates (time frame: 1 year). 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 NCT01464060, which also lists 28 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 31 Dec 2012.