HIV InfectionsPhase 1NCT00618605
Safety of and Immune Response to an Adenoviral HIV-1 Vaccine in Healthy Adults
A Phase 1 study testing Ad26.ENVA.01 HIV-1 vaccine in people with HIV Infections, run by National Institute of Allergy and Infectious Diseases (NIAID) at 1 site in United States.
Trial summary
Successful control of the HIV epidemic will require a safe and effective vaccine to be developed. A successful vaccine will need to stimulate a widespread immune response. The purpose of this study is to determine the safety of and immune response to an adenovirus serotype HIV vaccine in HIV uninfected adults. Read more about this study
- Who is it for?
- Ages 18 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- HIV Infections
- What is being tested?
- Ad26.ENVA.01 HIV-1 vaccine
- Type of treatment
- Vaccines, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- 1 siteUnited States
- Study dates
- Feb 2008to Oct 2015
- 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 18 to 50 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Good general health with normal hematological, hepatic and renal functions
- Demonstrated understanding of study
- Willing to receive HIV test results
- HIV-1 and -2 uninfected
- Hepatitis B surface antigen negative
- Anti-hepatitis C virus (anti-HCV) negative antibody or negative HCV PCR if anti-HCV is positive
Show all 9Show fewer
- Appropriate hemoglobin, white blood cell, lymphocyte, and platelet count values as defined in the study protocol
- Certain laboratory values as defined in the study protocol
- Adequate contraception from at least 21 days prior to study entry through visit 10
Who cannot join
- HIV vaccines or placebos in prior HIV vaccine trial
- Immunosuppressive medications within 168 days prior to first injection. Participants taking corticosteroid nasal spray or topical corticosteroids are not excluded.
- Blood products within 120 days prior to first injection
- Immunoglobulin within 60 days prior to first injection
- Investigational agents within 30 days prior to first injections
- Live attenuated vaccine within 30 days prior to first injection
Show all 27Show fewer
- Any vaccine not a live attenuated vaccine within 14 days prior to first injection
- Any clinically significant medical condition that, in the opinion of the investigator, may interfere with the study
- Any medical, psychiatric, occupational, or social condition or responsibility that, in the opinion of the investigator, would interfere with the study
- Serious adverse reaction to vaccines. Participants who had a nonanaphylactic adverse reaction to pertussis vaccine as a child are not excluded.
- Known autoimmune disease
- Known immunodeficiency
- Asthma other than mild and/or well-controlled asthma
- Active syphilis infection. Those fully treated for syphilis over 6 months prior to study entry are not excluded.
- Diabetes mellitus type 1 or 2
- Thyroidectomy or thyroid disease requiring medication within 12 months prior to study entry
- Angioedema in the 3 years prior to study entry if the episodes are considered serious or have required medication within the last 2 years
- Hypertension. More information on this criterion can be found in the protocol.
- Body mass index (BMI) of 40 or higher OR BMI of 35 or greater, if other cardiovascular risk factors. More information on this criterion can be found in the protocol.
- Bleeding disorder
- Malignancy, unless it has been surgically removed and, in the opinion of the investigator, is not likely to recur during the study period
- Seizure disorder or occurrence of seizure in the 3 years prior to study entry. Participants who have not required medications or had a seizure for prior 3 years are not excluded.
- Absence of a functional spleen
- Psychiatric condition within the last 3 years. More information on this criterion can be found in the study protocol.
- Individuals at high-risk of acquiring HIV infection
- Presence of pre-existing neutralizing antibodies for Adenovirus 26
- Pregnancy or breastfeeding
Trial locations and contacts
1 site in 1 country.
United States1 site
Brigham and Women's Hosp. Novel Adenoviral Vector Prophylactic HIV Vaccine Non-Network CRS
Boston, Massachusetts, 02115-6110
About this study
Official title: A Phase 1 Randomized, Double-Blind, Placebo Controlled Dose Escalation Clinical Trial to Evaluate the Safety and Immunogenicity of Recombinant Adenovirus Serotype 26 HIV-1 Vaccine (Ad26.ENVA.01) in Healthy, HIV-1 Uninfected Adults
Successful control of the HIV epidemic will require a safe and effective vaccine to be developed. A successful vaccine will need to stimulate a widespread immune response. The purpose of this study is to determine the safety of and immune response to an adenovirus serotype HIV vaccine in HIV uninfected adults.
Read the detailed description
HIV infection continues to spread at pandemic levels throughout the world. Control of this pandemic can only be achieved with the development of a safe and effective preventive HIV vaccine. A vaccine that will prevent HIV infection will elicit a strong immune response from both CD4 and CD8 cells. Recombinant adenovirus serotype vectors have been shown to elicit just such a response. The purpose of this study is to determine the safety and immunogenicity of the recombinant adenovirus serotype 26 preventive HIV-1 vaccine.
This study will last 12 months. Participants will be randomly assigned to one of four arms that will receive different doses of the vaccine or placebo administered via intermuscular injection. Participants in Arms 1, 2, and 3 will all receive 3 injections. Each injection will contain the same dose of vaccine. Arm 4 will receive 2 injections of a dose of vaccine that will be determined by the safety data from Arms 1, 2, and 3. Participants will be enrolled sequentially, from lowest to highest dose of vaccine, into Arms 1, 2, and 3. Arms will begin enrollment only following review of safety data from the previous group. After the Day 42 safety data from Arms 1, 2, and 3 have been reviewed, the dose for Arm 4 will be determined, and enrollment into that arm will begin.
There will be 10 study visits in this study, occurring at baseline and after 0.5, 1, 1.5, 2, 6, 6.5, 7, and 12 months. Participants in Arms 1, 2, and 3 will receive injections on Days 0, 28, and 168. Participants in Arm 4 will receive injections on Days 0 and 168. Participants will be asked to record their temperature and other side effects in a symptom log for 7 days after each injection. Risk reduction/pregnancy prevention counseling will occur at visits 1 through 9, and physical exams and assessments of illness or adverse events will occur at all visits. At most visits, blood, urine, and oral swab collection will occur. At some visits, HIV testing and pregnancy testing will occur.
Once a year for 5 years following study entry, participants will attend a study visit or will be contacted by study staff by telephone or e-mail for follow-up safety and health monitoring. Some participants will also undergo a blood collection at these visits.
- Conditions
- HIV Infections
- Being tested
- Ad26.ENVA.01 HIV-1 vaccine
- Keywords
- HIV Seronegativity, HIV Preventative Vaccine
- Medical subject headings
- HIV Infections
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Ad26.ENVA.01 HIV-1 vaccineBiological
Recombinant adenovirus serotype 26 HIV-1 vaccine
| Study group | Role | What they receive |
|---|---|---|
| 1 | Experimental | 3 injections of Ad26.ENVA.01 HIV-1 vaccine or placebo at 1 x 10^9 virus particles (VP) given at Days 0, 28, and 168 Receives: Biological: Ad26.ENVA.01 HIV-1 vaccine |
| 2 | Experimental | 3 injections of Ad26.ENVA.01 HIV-1 vaccine or placebo at 1 x 10^10 VP given at Days 0, 28, and 168 Receives: Biological: Ad26.ENVA.01 HIV-1 vaccine |
| 3 | Experimental | 3 injections of Ad26.ENVA.01 HIV-1 vaccine or placebo at 1 x 10^11 VP given at Days 0, 28, and 168 Receives: Biological: Ad26.ENVA.01 HIV-1 vaccine |
| 4 | Experimental | 2 injections of Ad26.ENVA.01 HIV-1 vaccine or placebo at a dose to be determined by the safety data from Arms 1, 2 and 3 given at Days 0 and 168 Receives: Biological: Ad26.ENVA.01 HIV-1 vaccine |
What is being measured
The primary outcome is the main question the study is designed to answer.
Local and systemic reactions to injection
Measured: After each injection
Secondary outcomes (4)
Humoral immune responses, such as neutralizing and binding antibodies to HIV and Ad26
Measured: Throughout study
Cell mediated immunity, including T-cell gamma interferon responses and assessment of T-cell responses by flow cytometry
Measured: Throughout study
Genotyping
Measured: Throughout study
Stored samples may be used to perform additional assays for further evaluation of immunogenicity and to support standardization and validation of new assays such as epitope mapping, flow cytometry, and/or tetramer analysis.
Measured: After study follow-up
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Feb 2008 (estimated)
- Study startFeb 2008
- Primary completionJul 2011
- Study completionOct 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (5)Papers the sponsor has linked to this study.
- Other trials for HIV InfectionsStudies of the same condition, open and under way.
- More trials run by National Institute of Allergy and Infectious Diseases (NIAID)The 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 1
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Care provider
- Enrolment
- 60 participants (actual)
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
- Responsible party
- Sponsor
- Investigators
- Lindsey Baden, MD, Study chair, Brigham and Women's HospitalDan Barouch, MD, PhD, Study chair, Beth Israel Deaconess Medical CenterRaphael Dolin, MD, Study chair, Brigham and Women's Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00618605
- Sponsor's protocol ID
- Ad26.ENVA.01/IPCAVD-001
- Other IDs
- 10623, Ad26.ENVA.01
- Status last verified
- Oct 2021
- First submitted
- 18 Feb 2008
- Last updated
- 1 Nov 2021
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Abbink P, Lemckert AA, Ewald BA, Lynch DM, Denholtz M, Smits S, Holterman L, Damen I, Vogels R, Thorner AR, O'Brien KL, Carville A, Mansfield KG, Goudsmit J, Havenga MJ, Barouch DH. Comparative seroprevalence and immunogenicity of six rare serotype recombinant adenovirus vaccine vectors from subgroups B and D. J Virol. 2007 May;81(9):4654-63. doi: 10.1128/JVI.02696-06. Epub 2007 Feb 28.
PubMed 17329340Liniger M, Zuniga A, Naim HY. Use of viral vectors for the development of vaccines. Expert Rev Vaccines. 2007 Apr;6(2):255-66. doi: 10.1586/14760584.6.2.255.
PubMed 17408374Roberts DM, Nanda A, Havenga MJ, Abbink P, Lynch DM, Ewald BA, Liu J, Thorner AR, Swanson PE, Gorgone DA, Lifton MA, Lemckert AA, Holterman L, Chen B, Dilraj A, Carville A, Mansfield KG, Goudsmit J, Barouch DH. Hexon-chimaeric adenovirus serotype 5 vectors circumvent pre-existing anti-vector immunity. Nature. 2006 May 11;441(7090):239-43. doi: 10.1038/nature04721. Epub 2006 Apr 16.
PubMed 16625206Baden LR, Walsh SR, Seaman MS, Tucker RP, Krause KH, Patel A, Johnson JA, Kleinjan J, Yanosick KE, Perry J, Zablowsky E, Abbink P, Peter L, Iampietro MJ, Cheung A, Pau MG, Weijtens M, Goudsmit J, Swann E, Wolff M, Loblein H, Dolin R, Barouch DH. First-in-human evaluation of the safety and immunogenicity of a recombinant adenovirus serotype 26 HIV-1 Env vaccine (IPCAVD 001). J Infect Dis. 2013 Jan 15;207(2):240-7. doi: 10.1093/infdis/jis670. Epub 2012 Nov 2.
PubMed 23125444Barouch DH, Liu J, Peter L, Abbink P, Iampietro MJ, Cheung A, Alter G, Chung A, Dugast AS, Frahm N, McElrath MJ, Wenschuh H, Reimer U, Seaman MS, Pau MG, Weijtens M, Goudsmit J, Walsh SR, Dolin R, Baden LR. Characterization of humoral and cellular immune responses elicited by a recombinant adenovirus serotype 26 HIV-1 Env vaccine in healthy adults (IPCAVD 001). J Infect Dis. 2013 Jan 15;207(2):248-56. doi: 10.1093/infdis/jis671. Epub 2012 Nov 2.
PubMed 23125443
Study at a glance
From the registry record, last updated by the sponsor on 1 Nov 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 1 Randomized, Double-Blind, Placebo Controlled Dose Escalation Clinical Trial to Evaluate the Safety and Immunogenicity of Recombinant Adenovirus Serotype 26 HIV-1 Vaccine (Ad26.ENVA.01) in Healthy, HIV-1 Uninfected Adults
- ClinicalTrials.gov ID
- NCT00618605
- Acronym / sponsor ID
- Ad26.ENVA.01/IPCAVD-001
- Conditions
- HIV Infections
- Keywords
- HIV Seronegativity, HIV Preventative Vaccine
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 60 participants (actual)
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)US National Institutes of Health
- Study start
- Feb 2008
- Primary completion
- Jul 2011 (actual)
- Study completion
- Oct 2015 (actual)
- First posted
- 20 Feb 2008 (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.
Successful control of the HIV epidemic will require a safe and effective vaccine to be developed. A successful vaccine will need to stimulate a widespread immune response. The purpose of this study is to determine the safety of and immune response to an adenovirus serotype HIV vaccine in HIV uninfected adults.
Detailed description
HIV infection continues to spread at pandemic levels throughout the world. Control of this pandemic can only be achieved with the development of a safe and effective preventive HIV vaccine. A vaccine that will prevent HIV infection will elicit a strong immune response from both CD4 and CD8 cells. Recombinant adenovirus serotype vectors have been shown to elicit just such a response. The purpose of this study is to determine the safety and immunogenicity of the recombinant adenovirus serotype 26 preventive HIV-1 vaccine.
This study will last 12 months. Participants will be randomly assigned to one of four arms that will receive different doses of the vaccine or placebo administered via intermuscular injection. Participants in Arms 1, 2, and 3 will all receive 3 injections. Each injection will contain the same dose of vaccine. Arm 4 will receive 2 injections of a dose of vaccine that will be determined by the safety data from Arms 1, 2, and 3. Participants will be enrolled sequentially, from lowest to highest dose of vaccine, into Arms 1, 2, and 3. Arms will begin enrollment only following review of safety data from the previous group. After the Day 42 safety data from Arms 1, 2, and 3 have been reviewed, the dose for Arm 4 will be determined, and enrollment into that arm will begin.
There will be 10 study visits in this study, occurring at baseline and after 0.5, 1, 1.5, 2, 6, 6.5, 7, and 12 months. Participants in Arms 1, 2, and 3 will receive injections on Days 0, 28, and 168. Participants in Arm 4 will receive injections on Days 0 and 168. Participants will be asked to record their temperature and other side effects in a symptom log for 7 days after each injection. Risk reduction/pregnancy prevention counseling will occur at visits 1 through 9, and physical exams and assessments of illness or adverse events will occur at all visits. At most visits, blood, urine, and oral swab collection will occur. At some visits, HIV testing and pregnancy testing will occur.
Once a year for 5 years following study entry, participants will attend a study visit or will be contacted by study staff by telephone or e-mail for follow-up safety and health monitoring. Some participants will also undergo a blood collection at these visits.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, care provider)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| 1 | Experimental | Biological: Ad26.ENVA.01 HIV-1 vaccine3 injections of Ad26.ENVA.01 HIV-1 vaccine or placebo at 1 x 10^9 virus particles (VP) given at Days 0, 28, and 168 |
| 2 | Experimental | Biological: Ad26.ENVA.01 HIV-1 vaccine3 injections of Ad26.ENVA.01 HIV-1 vaccine or placebo at 1 x 10^10 VP given at Days 0, 28, and 168 |
| 3 | Experimental | Biological: Ad26.ENVA.01 HIV-1 vaccine3 injections of Ad26.ENVA.01 HIV-1 vaccine or placebo at 1 x 10^11 VP given at Days 0, 28, and 168 |
| 4 | Experimental | Biological: Ad26.ENVA.01 HIV-1 vaccine2 injections of Ad26.ENVA.01 HIV-1 vaccine or placebo at a dose to be determined by the safety data from Arms 1, 2 and 3 given at Days 0 and 168 |
Who may qualify
- Ages
- 18 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (9 listed)
- Good general health with normal hematological, hepatic and renal functions
- Demonstrated understanding of study
- Willing to receive HIV test results
- HIV-1 and -2 uninfected
- Hepatitis B surface antigen negative
Key exclusion criteria (27 listed)
- HIV vaccines or placebos in prior HIV vaccine trial
- Immunosuppressive medications within 168 days prior to first injection. Participants taking corticosteroid nasal spray or topical corticosteroids are not excluded.
- Blood products within 120 days prior to first injection
- Immunoglobulin within 60 days prior to first injection
- Investigational agents within 30 days prior to first injections
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 |
|---|---|---|
| Ad26.ENVA.01 HIV-1 vaccineRecombinant adenovirus serotype 26 HIV-1 vaccine | Biological | 1, 2, 3, 4 |
Primary outcome
Local and systemic reactions to injection
Time frame: After each injection
4 secondary outcomes
Humoral immune responses, such as neutralizing and binding antibodies to HIV and Ad26
Time frame: Throughout study
Cell mediated immunity, including T-cell gamma interferon responses and assessment of T-cell responses by flow cytometry
Time frame: Throughout study
Genotyping
Time frame: Throughout study
Stored samples may be used to perform additional assays for further evaluation of immunogenicity and to support standardization and validation of new assays such as epitope mapping, flow cytometry, and/or tetramer analysis.
Time frame: After study follow-up
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 1 Nov 2021.
- Background: PubMed 17329340Abbink P, Lemckert AA, Ewald BA, Lynch DM, Denholtz M, Smits S, Holterman L, Damen I, Vogels R, Thorner AR, O'Brien KL, Carville A, Mansfield KG, Goudsmit J, Havenga MJ, Barouch DH. Comparative seroprevalence and immunogenicity of six rare serotype recombinant adenovirus vaccine vectors from subgroups B and D. J Virol. 2007 May;81(9):4654-63. doi: 10.1128/JVI.02696-06. Epub 2007 Feb 28.
- Background: PubMed 17408374Liniger M, Zuniga A, Naim HY. Use of viral vectors for the development of vaccines. Expert Rev Vaccines. 2007 Apr;6(2):255-66. doi: 10.1586/14760584.6.2.255.
- Background: PubMed 16625206Roberts DM, Nanda A, Havenga MJ, Abbink P, Lynch DM, Ewald BA, Liu J, Thorner AR, Swanson PE, Gorgone DA, Lifton MA, Lemckert AA, Holterman L, Chen B, Dilraj A, Carville A, Mansfield KG, Goudsmit J, Barouch DH. Hexon-chimaeric adenovirus serotype 5 vectors circumvent pre-existing anti-vector immunity. Nature. 2006 May 11;441(7090):239-43. doi: 10.1038/nature04721. Epub 2006 Apr 16.
- Derived from this study: PubMed 23125444Baden LR, Walsh SR, Seaman MS, Tucker RP, Krause KH, Patel A, Johnson JA, Kleinjan J, Yanosick KE, Perry J, Zablowsky E, Abbink P, Peter L, Iampietro MJ, Cheung A, Pau MG, Weijtens M, Goudsmit J, Swann E, Wolff M, Loblein H, Dolin R, Barouch DH. First-in-human evaluation of the safety and immunogenicity of a recombinant adenovirus serotype 26 HIV-1 Env vaccine (IPCAVD 001). J Infect Dis. 2013 Jan 15;207(2):240-7. doi: 10.1093/infdis/jis670. Epub 2012 Nov 2.
- Derived from this study: PubMed 23125443Barouch DH, Liu J, Peter L, Abbink P, Iampietro MJ, Cheung A, Alter G, Chung A, Dugast AS, Frahm N, McElrath MJ, Wenschuh H, Reimer U, Seaman MS, Pau MG, Weijtens M, Goudsmit J, Walsh SR, Dolin R, Baden LR. Characterization of humoral and cellular immune responses elicited by a recombinant adenovirus serotype 26 HIV-1 Env vaccine in healthy adults (IPCAVD 001). J Infect Dis. 2013 Jan 15;207(2):248-56. doi: 10.1093/infdis/jis671. Epub 2012 Nov 2.
Related trials for HIV Infections
Not yet recruiting
HealthMpowerment Korea: Pilot Testing the Cultural Adaptation of a Digital HIV Intervention for Men Who Have Sex With Men in South Korea
HIV Infections, HIV Prevention and Care
Not yet recruiting
Prescribe to Prevent HIV: A Hybrid Trial Helping Addiction Clinics Prevent HIV & Infections Through Safer Drug Use Support
People Who Use Opioids/People With Opioid Use Disorder (OUD)
Recruiting
Evaluating the Impact of Using the B-OK Bottles for HIV and ART Literacy in South Africa
HIV, HIV Treatment
Recruiting
Trial Phase: Syndemic Adapted Medly Uganda
Mental Health
RecruitingObservational study
Olfactory Function and Model-Based Behavior in People Living With HIV and SUD
HIV, Substance Use Disorder
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.
Lindsey Baden, MD study chair
Brigham and Women's Hospital
Dan Barouch, MD, PhD study chair
Beth Israel Deaconess Medical Center
Raphael Dolin, MD study chair
Brigham and Women's Hospital
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 Ad26.ENVA.01 HIV-1 vaccine in people with HIV Infections, run by National Institute of Allergy and Infectious Diseases (NIAID) 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 9 inclusion and 27 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 1 Nov 2021. 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.
What does the primary outcome measure?
Local and systemic reactions to injection (time frame: After each injection). 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 NCT00618605, which also lists 5 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 1 Nov 2021.