Ataxia TelangiectasiaNCT01075438
Immunogenicity of Pneumococcal Vaccines in Ataxia-telangiectasia Patients
An observational study of Ataxia Telangiectasia, run by Sheba Medical Center at 1 site in Israel.
Trial summary
Ataxia-telangiectasia (AT) is a rare genetic disorder characterized by gait disorders, neuromotor dysfunction, eye abnormalities and immune deficiency. AT patients are vulnerable to cancer and infection and usually die during their 2nd or 3rd decade due to these complications. Read more about this study
- Who is it for?
- Ages 2 to 25 years
- Conditions the study is for
- Ataxia Telangiectasia
- What is being tested?
- Prevenar® (7-valent pneumococcal conjugate vaccine) and Pneumovax® (pneumococcal polysaccharide vaccine)
- Type of treatment
- Vaccines, Injection or infusion
- How many people
- 20 participants
- Where
- 1 siteIsrael
- Study dates
- Mar 2010to Feb 2011
- 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 2 to 25 years
- All sexes
- No healthy volunteers
- Child, Adult
Study population: Ataxia Telangiectasia patients, not cuurntly on replacement Immunoglobulin G therapy
Who may be able to join
- AT patients attending the national AT clinic
- 2+ years of age
- Agree to join this study
Who cannot join
- Patients on regular immunoglobulin replacement therapy (other patients who are not on replacement therapy but have received IVIG 3 months or less before the beginning of the study)
- Current infection
- Previous serious adverse reactions to vaccination
- Administration of other vaccines within 4 weeks before administration of study vaccine or plan for vaccination 26 weeks following the first vaccine (PCV7)
Trial locations and contacts
1 site in 1 country.
Israel1 site
Chaim Sheba Medical Center
Tel HaShomer, 52621
Galia Barkai, MD, 972-3-5305978, Galia.Barkai@sheba.health.gov.il
Galia Barkai, MD
About this study
Official title: Descriptive Immunogenicity of 2 Doses of Pneumococcal 7-valent Conjugate Vaccine (Prevenar®, Wyeth Lederle) Followed by Pneumococcal Polysaccharide Vaccine (Pneumovax® Aventis Pasteur MSD) in Ataxia-telangiectasia Patients
Ataxia-telangiectasia (AT) is a rare genetic disorder characterized by gait disorders, neuromotor dysfunction, eye abnormalities and immune deficiency. AT patients are vulnerable to cancer and infection and usually die during their 2nd or 3rd decade due to these complications. The main cause of death is respiratory infections because these patients are known to have severe type of immunodeficiency. Consequently, pneumonia is the most common infection seen in AT patients, and is usually caused by S. pneumoniae. Therefore, a routine schedule of pneumococcal vaccine is highly recommended in AT cases where immunoglobulin replacement therapy was not already initiated.
Until recently, AT patients were immunized with the pneumococcal polysaccharide vaccine (PPV23, Pneumovax® Aventis Pasteur MSD). However, data have shown that they do not respond well to these vaccines. Recently, the Israeli Ministry of Health has approved the pneumococcal 7-valent conjugate vaccine (PCV7, Prevenar®, Wyeth Lederle) for AT patients of all ages. This conjugate vaccine is known to stimulate the immune system through a different mechanism and the response is expected to be higher. The approved Israeli schedule for immunization of AT patients includes children older than 2 years that are entitled to receive 2 doses of PCV7 (8 weeks apart) boosted by PPV23, eight weeks after the second dose of PCV7. Assessment of the antibody response of such pneumococcal vaccination protocol in AT patients has never been performed.
Read more
The "Safra" Children's Hospital is the national multi-disciplinary center caring for AT patients. Approximately 50 patients from all over the country (including Jewish, Druze, Bedouin and other Muslim patients - 3 of whom are Palestinians) are followed in the clinic on a monthly basis.
Approximately 20 AT patients are not receiving IVIG replacement therapy, therefore are entitled to receive pneumococcal vaccination as stated above (mean age 10.6, 3 -23 years, 3 less than 5 years)
The aim of this study is to evaluate the responsiveness, determined by specific antibody production, of AT patients receiving this new vaccine protocol.
Read the detailed description
Ataxia-telangiectasia (AT) is a rare progressive neurodegenerative autosomal recessive disorder characterized by cerebellar ataxia, neuromotor dysfunction, oculocutaneous telangiectasia and immunodeficiency. AT patients are vulnerable to cancer and infection and usually die during their 2nd or 3rd decade due to these complications. Life expectancy does not correlate well with severity of neurological impairment. The main cause of death is respiratory infections because these patients are known to have severe type of immunodeficiency. The immunodeficiency of AT patient consists of both humoral defect (immunoglobulin deficiency and reduced response to polysaccharide antigens) and cell-mediated defect (reduced lymphocytes number and function). Consequently, pneumonia is the most common infection seen in AT patients, and is usually caused by S. pneumoniae. Therefore, a routine schedule of pneumococcal vaccine is highly recommended in AT cases where immunoglobulin replacement therapy was not already initiated.
Until recently, AT patients were immunized with the pneumococcal polysaccharide vaccine (PPV23, Pneumovax® Aventis Pasteur MSD). However, data have shown that they do not respond well to these vaccine mainly because of their reduced response to polysaccharide stimulation. Recently, the Israeli Ministry of Health has approved the pneumococcal 7-valent conjugate vaccine (PCV7, Prevenar®, Wyeth Lederle) for AT patients of all ages. In contrast to polysaccharide vaccines, this conjugate vaccine is known to stimulate the immune system through T-cell dependent mechanism, and therefore the response is expected to be higher. The approved Israeli schedule for immunization of AT patients includes children older than 2 years that are entitled to receive 2 doses of PCV7 (8 weeks apart) boosted by PPV23, eight weeks after the second dose of PCV7. Assessment of the immunogenicity of such pneumococcal vaccination protocol in AT patients has never been performed.
The "Safra" Children's Hospital is the national multi-disciplinary center caring for AT patients. Approximately 50 patients from all over the country (including Jewish, Druze, Bedouin and other Muslim patients - 3 of whom are Palestinians) are followed in the clinic on a monthly basis.
Approximately 20 AT patients are not receiving IVIG replacement therapy, therefore are entitled to receive pneumococcal vaccination as stated above (mean age 10.6, 3 -23 years, 3 less than 5 years.
The aim of this study is to evaluate the responsiveness, determined by specific antibody production, of AT patients receiving the new vaccine protocol that was recently approved to use by the Israeli Ministry of Health.
- Conditions
- Ataxia Telangiectasia
- Being tested
- Prevenar® (7-valent pneumococcal conjugate vaccine), Pneumovax® (pneumococcal polysaccharide vaccine)
- Keywords
- ataxia telangiectasia, Pneumococcal Vaccines
- Medical subject headings
- Ataxia Telangiectasia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Prevenar® (7-valent pneumococcal conjugate vaccine)Biological
Also called Prevenar®, Wyeth, Pneumovax® Aventis Pasteur MSD
Pneumococcal vaccines (conjugate and polysaccharide)
Intramuscular Injections: 2 doses of 7-valent pneumococcal conjugate vaccine 8 weeks apart and 1 dose of pneumococcal polysaccharide vaccine 8 weeks later
Pneumovax® (pneumococcal polysaccharide vaccine)Biological
Pneumococcal vaccines (conjugate and polysaccharide)
Intramuscular Injections: 2 doses of 7-valent pneumococcal conjugate vaccine 8 weeks apart and 1 dose of pneumococcal polysaccharide vaccine 8 weeks later
What is being measured
The primary outcome is the main question the study is designed to answer.
Primary end point will be levels of antibodies against 13 serotypes of streptococcus pneumoniae following vaccination with 2 doses of PCV7 and 1 dose of PPV23. All endpoints will include both ELISA and OPA antibodies.
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 posted25 Feb 2010 (estimated)
- Study startMar 2010
- Primary completionFeb 2011 (estimated)
- Study completionFeb 2011 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Ataxia TelangiectasiaStudies of the same condition, open and under way.
- More trials run by Sheba Medical CenterThe 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
- Case only
- Time perspective
- Prospective
- Enrolment
- 20 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Sheba Medical Center
- Sponsor type
- Other government
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01075438
- Sponsor's protocol ID
- SHEBA-09-7444-GB-CTIL
- Status last verified
- Mar 2010
- First submitted
- 24 Feb 2010
- Last updated
- 16 Mar 2010
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 16 Mar 2010. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Descriptive Immunogenicity of 2 Doses of Pneumococcal 7-valent Conjugate Vaccine (Prevenar®, Wyeth Lederle) Followed by Pneumococcal Polysaccharide Vaccine (Pneumovax® Aventis Pasteur MSD) in Ataxia-telangiectasia Patients
- ClinicalTrials.gov ID
- NCT01075438
- Acronym / sponsor ID
- SHEBA-09-7444-GB-CTIL
- Conditions
- Ataxia Telangiectasia
- Keywords
- ataxia telangiectasia, Pneumococcal Vaccines
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 20 participants (estimated)
- Lead sponsor
- Sheba Medical CenterOther government
- Study start
- Mar 2010
- Primary completion
- Feb 2011 (estimated)
- Study completion
- Feb 2011 (estimated)
- First posted
- 25 Feb 2010 (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.
Ataxia-telangiectasia (AT) is a rare genetic disorder characterized by gait disorders, neuromotor dysfunction, eye abnormalities and immune deficiency. AT patients are vulnerable to cancer and infection and usually die during their 2nd or 3rd decade due to these complications. The main cause of death is respiratory infections because these patients are known to have severe type of immunodeficiency. Consequently, pneumonia is the most common infection seen in AT patients, and is usually caused by S. pneumoniae. Therefore, a routine schedule of pneumococcal vaccine is highly recommended in AT cases where immunoglobulin replacement therapy was not already initiated.
Until recently, AT patients were immunized with the pneumococcal polysaccharide vaccine (PPV23, Pneumovax® Aventis Pasteur MSD). However, data have shown that they do not respond well to these vaccines. Recently, the Israeli Ministry of Health has approved the pneumococcal 7-valent conjugate vaccine (PCV7, Prevenar®, Wyeth Lederle) for AT patients of all ages. This conjugate vaccine is known to stimulate the immune system through a different mechanism and the response is expected to be higher. The approved Israeli schedule for immunization of AT patients includes children older than 2 years that are entitled to receive 2 doses of PCV7 (8 weeks apart) boosted by PPV23, eight weeks after the second dose of PCV7. Assessment of the antibody response of such pneumococcal vaccination protocol in AT patients has never been performed.
The "Safra" Children's Hospital is the national multi-disciplinary center caring for AT patients. Approximately 50 patients from all over the country (including Jewish, Druze, Bedouin and other Muslim patients - 3 of whom are Palestinians) are followed in the clinic on a monthly basis.
Approximately 20 AT patients are not receiving IVIG replacement therapy, therefore are entitled to receive pneumococcal vaccination as stated above (mean age 10.6, 3 -23 years, 3 less than 5 years)
The aim of this study is to evaluate the responsiveness, determined by specific antibody production, of AT patients receiving this new vaccine protocol.
Detailed description
Ataxia-telangiectasia (AT) is a rare progressive neurodegenerative autosomal recessive disorder characterized by cerebellar ataxia, neuromotor dysfunction, oculocutaneous telangiectasia and immunodeficiency. AT patients are vulnerable to cancer and infection and usually die during their 2nd or 3rd decade due to these complications. Life expectancy does not correlate well with severity of neurological impairment. The main cause of death is respiratory infections because these patients are known to have severe type of immunodeficiency. The immunodeficiency of AT patient consists of both humoral defect (immunoglobulin deficiency and reduced response to polysaccharide antigens) and cell-mediated defect (reduced lymphocytes number and function). Consequently, pneumonia is the most common infection seen in AT patients, and is usually caused by S. pneumoniae. Therefore, a routine schedule of pneumococcal vaccine is highly recommended in AT cases where immunoglobulin replacement therapy was not already initiated.
Until recently, AT patients were immunized with the pneumococcal polysaccharide vaccine (PPV23, Pneumovax® Aventis Pasteur MSD). However, data have shown that they do not respond well to these vaccine mainly because of their reduced response to polysaccharide stimulation. Recently, the Israeli Ministry of Health has approved the pneumococcal 7-valent conjugate vaccine (PCV7, Prevenar®, Wyeth Lederle) for AT patients of all ages. In contrast to polysaccharide vaccines, this conjugate vaccine is known to stimulate the immune system through T-cell dependent mechanism, and therefore the response is expected to be higher. The approved Israeli schedule for immunization of AT patients includes children older than 2 years that are entitled to receive 2 doses of PCV7 (8 weeks apart) boosted by PPV23, eight weeks after the second dose of PCV7. Assessment of the immunogenicity of such pneumococcal vaccination protocol in AT patients has never been performed.
The "Safra" Children's Hospital is the national multi-disciplinary center caring for AT patients. Approximately 50 patients from all over the country (including Jewish, Druze, Bedouin and other Muslim patients - 3 of whom are Palestinians) are followed in the clinic on a monthly basis.
Approximately 20 AT patients are not receiving IVIG replacement therapy, therefore are entitled to receive pneumococcal vaccination as stated above (mean age 10.6, 3 -23 years, 3 less than 5 years.
The aim of this study is to evaluate the responsiveness, determined by specific antibody production, of AT patients receiving the new vaccine protocol that was recently approved to use by the Israeli Ministry of Health.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
Who may qualify
- Ages
- 2 to 25 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult
- Study population
- Ataxia Telangiectasia patients, not cuurntly on replacement Immunoglobulin G therapy
Key inclusion criteria (3 listed)
- AT patients attending the national AT clinic
- 2+ years of age
- Agree to join this study
Key exclusion criteria (4 listed)
- Patients on regular immunoglobulin replacement therapy (other patients who are not on replacement therapy but have received IVIG 3 months or less before the beginning of the study)
- Current infection
- Previous serious adverse reactions to vaccination
- Administration of other vaccines within 4 weeks before administration of study vaccine or plan for vaccination 26 weeks following the first vaccine (PCV7)
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 |
|---|---|---|
| Prevenar® (7-valent pneumococcal conjugate vaccine)Also: Prevenar®, Wyeth, Pneumovax® Aventis Pasteur MSDPneumococcal vaccines (conjugate and polysaccharide) Intramuscular Injections: 2 doses of 7-valent pneumococcal conjugate vaccine 8 weeks apart and 1 dose of pneumococcal polysaccharide vaccine 8 weeks later | Biological | – |
| Pneumovax® (pneumococcal polysaccharide vaccine)Pneumococcal vaccines (conjugate and polysaccharide) Intramuscular Injections: 2 doses of 7-valent pneumococcal conjugate vaccine 8 weeks apart and 1 dose of pneumococcal polysaccharide vaccine 8 weeks later | Biological | – |
Primary outcome
Primary end point will be levels of antibodies against 13 serotypes of streptococcus pneumoniae following vaccination with 2 doses of PCV7 and 1 dose of PPV23. All endpoints will include both ELISA and OPA antibodies.
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 16 Mar 2010.
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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.
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 Ataxia Telangiectasia, run by Sheba Medical Center at 1 site in Israel.
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 3 inclusion and 4 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 16 Mar 2010. 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 Israel. 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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Galia Barkai, MD (972-3-530-5978, Galia.Barkai@sheba.health.gov.il), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Primary end point will be levels of antibodies against 13 serotypes of streptococcus pneumoniae following vaccination with 2 doses of PCV7 and 1 dose of PPV23. All endpoints will include both ELISA and OPA antibodies. (time frame: 1 year). 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 16 Mar 2010.