Efficacy and Safety of Alginos Oral Suspension to Treat Laryngopharyngeal Reflux

June 3, 2015 updated by: TTY Biopharm

A Double-blind, Randomized, Placebo-controlled Study to Evaluate the Efficacy and Safety of Alginos Oral Suspension (Sodium Alginate 50 mg/ml) for the Treatment of Patients With Laryngopharyngeal Reflux (LPR)

Laryngopharyngeal reflux (LPR), the backflow of gastric acid into the larynx and hypopharynx, is a contributing factor to hoarseness, throat clearing, throat pain, and globus sensation. The therapeutic effect of proton pump inhibitors (PPIs) is controversial because a high placebo effect can be observed. Sodium Alginate is an effective medication indicated for symptomatic treatment of gastroesophageal reflux. This randomized, double-blind, placebo-controlled study aims to evaluate the efficacy and safety profile of sodium alginates oral suspension (50 mg/ml) 20 ml 3 times daily for the treatment of with LPR patients in Taiwan. Efficacy assessments include mean reduction in the total reflux symptom index (RSI) score after 4 and 8 weeks treatment, mean reduction in the total reflux finding score (RFS) after 4 and 8 weeks treatment, mean changes in the total numbers of reflux episodes as measured by 24-hour ambulatory combined impedance-pH monitoring after 1 day and 8 weeks treatment. Safety assessments include incidence of adverse events. The study hypothesis is sodium alginate is superior over placebo in relieving LPR symptoms.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This double-blind, randomized, placebo-controlled trial aims to evaluate the efficacy and safety profiles of sodium alginate oral suspension (50mg/ml) 20ml 3 times daily for the treatment of patients with laryngopharyngeal reflux (LPR) in Taiwan. Patients will be enrolled into study if they are at the age of 12 to 75 years old, have at least one symptom consistent with LPR and lasting for more than 4 weeks before study, with a total reflux symptom index (RSI)>10, with a total reflux finding score (RFS)>5, and have signed the informed consent form. Patients will be excluded if they are diagnosed as erosive gastroesophageal reflux disease (GERD)as evidenced by upper GI endoscopy, viral or bacterial laryngitis, or occupational exposures causing laryngitis, laryngeal or hypopharyngeal cancer, esophageal or gastric cancer, with history of neck radiation therapy, with history of esophageal or gastric surgery, with active pulmonary infection (pneumonia, tuberculosis) as evidenced by chest X-ray, with endotracheal tube intubation within 2 months before entering study, or taking any alginate preparations within 2 days; H2-blocker, prokinetic agent or antacid within 7 days; or proton pump inhibitors (PPIs) within 14 days before screening. The primary efficacy endpoint is mean reduction in the total RSI from baseline to Week 8. The secondary efficacy endpoints are mean reduction in the total RSI from baseline to Day 2 and Week 4; mean reduction in the RFS from baseline to Week 4 and Week 8; mean change in the individual component of RSI from baseline to Day 2 , Week 4 and Week 8; mean change in the individual component of RFS from baseline to Week 4 and Week 8; and mean change in the total numbers of reflux episodes as measured by 24-hr ambulatory combined impedance-pH monitoring from baseline to day 2 and week 8. The safety endpoint is incidence of adverse events. The study hypothesis is that sodium alginate is superior over placebo in treating patients with LPR.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
80

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Taiwan
      • Taipei, Taiwan, 104
        • TTY Biopharm Company Limited Taipei Branch

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

12 years to 75 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients with age of 12-75 years old (inclusive)
  • Patients with at least one symptom consistent with LPR, including hoarseness, throat clearing, throat pain, globus sensation in the throat, or chronic cough ≧ 4 weeks before entering study
  • Patients with a total reflux symptom index (RSI) >10 (based on a self-administered 9-item questionnaire of voice/throat complaints)
  • Patients with a total reflux finding score (RFS) >5 (based on a laryngoscopic examination by investigators)
  • Patients or their legal representatives have signed the informed consent form

Exclusion Criteria:

  • Patients with viral or bacterial laryngitis, or occupational exposures causing laryngitis
  • Patients with erosive GERD as evidenced by upper GI endoscopy
  • Patients with laryngeal or hypopharyngeal cancer, esophageal or gastric cancer, , or with history of neck radiation therapy
  • Patients with history of uncontrolled hypertension or moderate to severe renal impairment
  • Patients with history of esophageal or gastric surgery
  • Patients with active pulmonary infection (pneumonia, tuberculosis) as evidenced by chest X-ray
  • Patients with endotracheal tube intubation within 2 months before entering study
  • Patients had taken any alginate preparations within 2 days; H2-blocker, prokinetic agent or antacid within 7 days; or proton pump inhibitors (PPIs) within 14 days before screening
  • Patients with a history of allergy to the study drugs or their related compounds
  • Patients with a history of alcohol or drug abuse, or with any psychiatric disease
  • Patients participated any investigational drug trial within 4 weeks before entering the study
  • Patients with any other conditions or diseases that investigator considers it is not appropriate to enter the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Sodium alginate
oral suspension, 50 mg/ml
Drug: Sodium alginate
oral suspension, 50 mg/ml, 20 ml three times daily, 8 weeks
Other Names:
  • Alginos
Placebo Comparator: Placebo
oral suspension without active ingredient
Drug: Placebo
matching placebo oral suspension, 50 mg/ml, 20 ml three times daily, 8 weeks

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Mean reduction in the total reflux symptom index (RSI) score from baseline to Week 8
Time Frame: before and after 8 weeks treatment
RSI is a self-administered 9-item questionnaire. RSI can be completed in less than 1 minute. The scale for each individual item ranges from 0 (no problem) to 5 (severe problem), with a maximum total score of 45. A total RSI score of >10 is suggestive of laryngopharyngeal reflux
before and after 8 weeks treatment

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Mean reduction in the total reflux symptom index (RSI) score from baseline to Day 2 and Week 4
Time Frame: before and after 1 day and 4 weeks treatment
before and after 1 day and 4 weeks treatment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
TTY Biopharm

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Tzu-Yu Hsiao, Ph.D., Department of Ear, Nose and Throat, National Taiwan University Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2011

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 1, 2015

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 7, 2011

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 11, 2011

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 12, 2011

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 8, 2015

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 3, 2015

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • TTYALG1101
  • NTUH-IRB-201106058MA (Other Identifier: TTY)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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