Otitis MediaPhase 1NCT00001605
Vaccination for Middle Ear Infection
A Phase 1 study testing Nontypeable Haemophilus influenzae in people with Otitis Media, run by National Institute on Deafness and Other Communication Disorders (NIDCD) at 1 site in United States.
Trial summary
Acute otitis media (OM) and OM with effusion are common childhood diseases. Otitis media is a condition marked by inflammation of the middle ear. Otitis media with effusion typically means a long-term (chronic) middle ear inflammation with secretion of fluid into the middle ear due to the blockage of the canal leading… Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Otitis Media
- What is being tested?
- Nontypeable Haemophilus influenzae
- How many people
- 40 participants
- Where
- 1 siteUnited States
- Study dates
- May 1997to Apr 2001
- Phase
- Phase 1
- 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 Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Healthy volunteers between ages 18 and 35 years.
Not pregnant or planning to become pregnant in next six months.
HIV negative.
Hepatitis B Negative.
No chronic Respiratory Tract Infections.
No history of abnormal immune system.
No severe or multiple allergies.
Trial locations and contacts
1 site in 1 country.
United States1 site
National Institute on Deafness and Other Communication Disorders (NIDCD)
Bethesda, Maryland, 20892
About this study
Official title: Phase I Study to Evaluate the Safety and Immunogenicity of a Nontypeable Haemophilus Influenzae Vaccine for Otitis Media
Acute otitis media (OM) and OM with effusion are common childhood diseases. Otitis media is a condition marked by inflammation of the middle ear. Otitis media with effusion typically means a long-term (chronic) middle ear inflammation with secretion of fluid into the middle ear due to the blockage of the canal leading from the middle ear to the mouth (eustachian tube). The fluid involved can be sterile (no organisms) or infected with disease causing organisms, such as bacteria or viruses.
Nontypeable Haemophilus influenzae (NTHi) is a bacteria that is one of the leading causes of OM and respiratory infections in older people. NTHi carry substances on their surface called antigens. When antigens come into contact with the right kinds of cells in the body, an immune reaction is caused. This reaction is often the symptoms of sickness that a patient feels. One of the major antigens on the surface of NTHi is called lipooligosaccharide (LOS).
Read more
In order for the body to fight off the attack of antigens, it creates substances called antibodies. Antibodies counter the action of antigens and make the bacteria harmless. However, the immune system must learn how to make the right antibodies for the right antigens. This is done by giving vaccines.
Vaccines can contain a small amount or an inactive form of an antigen. Once the immune system recognizes the antigen it can start making antibodies to prevent sickness if it is ever exposed to the antigen again. Presently there are no vaccines for NTHi.
One of the reasons why there is no vaccine for NTHi is because the antigen, LOS, is very toxic when given to humans. Researchers have tried to make the antigen less dangerous by removing the toxic effects. It is referred to as dLOS. Unfortunately, dLOS is unable to start antibody production.
However, researchers have found that by combining dLOS with another vaccine for tetanus (tetanous toxoid), they were able to stimulate the immune system to create antibodies in laboratory animals. These laboratory animals were protected against NTHi infections and otitis media (OM).
Researchers would like to test the effectiveness and safety of dLOS-TT vaccine in adult humans. Their ultimate goal is to develop a vaccine for OM and respiratory infections caused by NTHi.
Read the detailed description
Acute otitis media (OM) and OM with effusion are common childhood diseases. Nontypeable Haemophilus influenzae (NTHi) is a leading cause of OM and respiratory infections in older individuals. Currently, there is no vaccine for NTHi infection. Studies indicate that serum bactericidal antibodies are associated with protection from NTHi infection. We predict that serum antibodies with bactericidal activity to the lipooligosaccharide (LOS), a major surface antigen and virulence factor of NTHi, will confer immunity to this pathogen. LOS of NTHi is too toxic to administer to humans and detoxified LOS (dLOS) is not immunogenic, probably due to its low molecular weight. In order to improve its immunogenicity, the dLOS was convalently bound to tetanus toxoid (TT) using a clinically relevant scheme of vaccination, elicited bactericidal antibodies to LOS in an in vivo model. This investigational vaccine also showed protection against infection in a chinchilla otitis media model. We propose to evaluate the safety and immunogenicity of this dLOS-TT vaccine in adults (Phase I). Our goal is to develop a vaccine for OM and respiratory infections caused by NTHi.
- Conditions
- Otitis Media
- Being tested
- Nontypeable Haemophilus influenzae
- Keywords
- Conjugate Vaccine, Detoxified Lipooligosaccharide, Tetanus Toxoid, Normal Volunteers
- Medical subject headings
- Otitis Media, Tetanus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Nontypeable Haemophilus influenzaeBiological
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Dec 2002 (estimated)
- Study startMay 1997
- Study completionApr 2001
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Otitis MediaStudies 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 1
- Primary purpose
- Treatment
- Enrolment
- 40 participants
Sponsor and investigators
- Lead sponsor
- National Institute on Deafness and Other Communication Disorders (NIDCD)
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00001605
- Sponsor's protocol ID
- 970114
- Other IDs
- 97-DC-0114
- Status last verified
- Apr 2000
- First submitted
- 3 Nov 1999
- Last updated
- 4 Mar 2008
- Results posted
- No
Publications
Phillips NJ, Apicella MA, Griffiss JM, Gibson BW. Structural characterization of the cell surface lipooligosaccharides from a nontypable strain of Haemophilus influenzae. Biochemistry. 1992 May 12;31(18):4515-26. doi: 10.1021/bi00133a019.
PubMed 1581306Gu XX, Tsai CM, Ueyama T, Barenkamp SJ, Robbins JB, Lim DJ. Synthesis, characterization, and immunologic properties of detoxified lipooligosaccharide from nontypeable Haemophilus influenzae conjugated to proteins. Infect Immun. 1996 Oct;64(10):4047-53. doi: 10.1128/iai.64.10.4047-4053.1996.
PubMed 8926067Gu XX, Sun J, Jin S, Barenkamp SJ, Lim DJ, Robbins JB, Battey J. Detoxified lipooligosaccharide from nontypeable Haemophilus influenzae conjugated to proteins confers protection against otitis media in chinchillas. Infect Immun. 1997 Nov;65(11):4488-93. doi: 10.1128/iai.65.11.4488-4493.1997.
PubMed 9353024
Study at a glance
From the registry record, last updated by the sponsor on 4 Mar 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phase I Study to Evaluate the Safety and Immunogenicity of a Nontypeable Haemophilus Influenzae Vaccine for Otitis Media
- ClinicalTrials.gov ID
- NCT00001605
- Acronym / sponsor ID
- 970114
- Conditions
- Otitis Media
- Keywords
- Conjugate Vaccine, Detoxified Lipooligosaccharide, Tetanus Toxoid, Normal Volunteers
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 40 participants
- Lead sponsor
- National Institute on Deafness and Other Communication Disorders (NIDCD)US National Institutes of Health
- Study start
- May 1997
- Study completion
- Apr 2001
- First posted
- 10 Dec 2002 (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.
Acute otitis media (OM) and OM with effusion are common childhood diseases. Otitis media is a condition marked by inflammation of the middle ear. Otitis media with effusion typically means a long-term (chronic) middle ear inflammation with secretion of fluid into the middle ear due to the blockage of the canal leading from the middle ear to the mouth (eustachian tube). The fluid involved can be sterile (no organisms) or infected with disease causing organisms, such as bacteria or viruses.
Nontypeable Haemophilus influenzae (NTHi) is a bacteria that is one of the leading causes of OM and respiratory infections in older people. NTHi carry substances on their surface called antigens. When antigens come into contact with the right kinds of cells in the body, an immune reaction is caused. This reaction is often the symptoms of sickness that a patient feels. One of the major antigens on the surface of NTHi is called lipooligosaccharide (LOS).
In order for the body to fight off the attack of antigens, it creates substances called antibodies. Antibodies counter the action of antigens and make the bacteria harmless. However, the immune system must learn how to make the right antibodies for the right antigens. This is done by giving vaccines.
Vaccines can contain a small amount or an inactive form of an antigen. Once the immune system recognizes the antigen it can start making antibodies to prevent sickness if it is ever exposed to the antigen again. Presently there are no vaccines for NTHi.
One of the reasons why there is no vaccine for NTHi is because the antigen, LOS, is very toxic when given to humans. Researchers have tried to make the antigen less dangerous by removing the toxic effects. It is referred to as dLOS. Unfortunately, dLOS is unable to start antibody production.
However, researchers have found that by combining dLOS with another vaccine for tetanus (tetanous toxoid), they were able to stimulate the immune system to create antibodies in laboratory animals. These laboratory animals were protected against NTHi infections and otitis media (OM).
Researchers would like to test the effectiveness and safety of dLOS-TT vaccine in adult humans. Their ultimate goal is to develop a vaccine for OM and respiratory infections caused by NTHi.
Detailed description
Acute otitis media (OM) and OM with effusion are common childhood diseases. Nontypeable Haemophilus influenzae (NTHi) is a leading cause of OM and respiratory infections in older individuals. Currently, there is no vaccine for NTHi infection. Studies indicate that serum bactericidal antibodies are associated with protection from NTHi infection. We predict that serum antibodies with bactericidal activity to the lipooligosaccharide (LOS), a major surface antigen and virulence factor of NTHi, will confer immunity to this pathogen. LOS of NTHi is too toxic to administer to humans and detoxified LOS (dLOS) is not immunogenic, probably due to its low molecular weight. In order to improve its immunogenicity, the dLOS was convalently bound to tetanus toxoid (TT) using a clinically relevant scheme of vaccination, elicited bactericidal antibodies to LOS in an in vivo model. This investigational vaccine also showed protection against infection in a chinchilla otitis media model. We propose to evaluate the safety and immunogenicity of this dLOS-TT vaccine in adults (Phase I). Our goal is to develop a vaccine for OM and respiratory infections caused by NTHi.
Study design
- Primary purpose
- Treatment
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
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 |
|---|---|---|
| Nontypeable Haemophilus influenzae | Biological | – |
Primary outcome
Not reported in the source record.
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 4 Mar 2008.
- Background: PubMed 1581306Phillips NJ, Apicella MA, Griffiss JM, Gibson BW. Structural characterization of the cell surface lipooligosaccharides from a nontypable strain of Haemophilus influenzae. Biochemistry. 1992 May 12;31(18):4515-26. doi: 10.1021/bi00133a019.
- Background: PubMed 8926067Gu XX, Tsai CM, Ueyama T, Barenkamp SJ, Robbins JB, Lim DJ. Synthesis, characterization, and immunologic properties of detoxified lipooligosaccharide from nontypeable Haemophilus influenzae conjugated to proteins. Infect Immun. 1996 Oct;64(10):4047-53. doi: 10.1128/iai.64.10.4047-4053.1996.
- Background: PubMed 9353024Gu XX, Sun J, Jin S, Barenkamp SJ, Lim DJ, Robbins JB, Battey J. Detoxified lipooligosaccharide from nontypeable Haemophilus influenzae conjugated to proteins confers protection against otitis media in chinchillas. Infect Immun. 1997 Nov;65(11):4488-93. doi: 10.1128/iai.65.11.4488-4493.1997.
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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?
A Phase 1 study testing Nontypeable Haemophilus influenzae in people with Otitis Media, run by National Institute on Deafness and Other Communication Disorders (NIDCD) at 1 site in United States.
The full registered description is in the About this study section and the official record.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Mar 2008. 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. 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
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.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00001605, which also lists 3 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 4 Mar 2008.