Chronic Lymphocytic LeukemiaPhase 1NCT00783588
A Phase I Extension Trial of Repeated Infusions of ISF35
A Phase 1 study testing ISF35 in people with Chronic Lymphocytic Leukemia, run by Memgen, LLC at 1 site in United States.
Trial summary
The study is a Phase Ib extension trial that will assess the toxicity, tolerability, and safety of up to two repeated administrations of 1x10^8, 3x10^8, or 1x10^9 autologous Ad-ISF35-transduced CLL B cells given intravenously to patients with CLL who tolerated ISF35 in the prior Phase I infusion trial at M.D. Anderson. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Chronic Lymphocytic Leukemia
- What is being tested?
- ISF35
- How many people
- 4 participants
- Where
- 1 siteUnited States
- Study dates
- May 2007to Sep 2008
- 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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Subjects must have been enrolled and tolerated the single dose ISF35 in MDACC Protocol 2004-0914.
- Subjects must have adequate Ad-ISF35 transduced CLL B cells to allow for at least one additional treatment.
- Women of childbearing potential (not postmenopausal for at least one year or not surgically incapable of bearing children) must agree not to become pregnant for the duration of the study. Both men and women participants must agree to use contraception for the duration of the study.
- Subjects must have Zubrod performance status of ≤ 2.
- Subjects must have adequate hematologic, renal, hepatic, and coagulation function:
- Adequate hematologic function:
Show all 18Show fewer
- Platelet count ≥ 50,000/μl; AND
- Hemoglobin ≥ 10 g/dl (may be supported by erythropoietin or transfusion).
- Adequate renal function:
- Serum creatinine ≤ 1.5 times upper limit of normal; OR
- Measured creatinine clearance ≥ 40 mL/min/1.73 m^2.
- Adequate hepatic function:
- Total bilirubin ≤ 2.5 times upper limit of normal; AND
- ALT ≤ 2.5 times upper limit of normal; AND
- Adequate coagulation tests:
- Prothrombin time international normalized ratio (INR) ≤ 2; AND
- Partial thromboplastin time ≤ 1.66 times upper limit of normal
- Subjects must give written informed consent for the Phase 1B extension trial.
Who cannot join
- Unresolved toxicity (Grade ≥ 2) from single administration of Add-ISF35 transduced autologous CLL B cells.
- Presence of more than 55% prolymphocytes.
- Chemotherapy (e.g., purine analogues, alkylating agents, or corticosteroids), antibody therapy, immunotherapy, radiation therapy, or participation in any investigational drug treatment within 4 weeks of enrollment into protocol or at any time during the study.
- Ongoing toxicity from prior anti-neoplastic therapy.
- Prior gene therapy (EXCEPT Ad-ISF35) or allogeneic stem cell transplantation.
- Untreated autoimmune hemolytic anemia or immune thrombocytopenia.
Show all 9Show fewer
- Active infection requiring parenteral antibiotics.
- HIV/HBV/HCV seropositivity.
- Uncompensated hypothyroidism (defined as TSH greater than 4x upper limit of normal not treated with replacement hormone).
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Texas M.D. Anderson Cancer Center
Houston, Texas, 77030
About this study
Official title: A Phase 1B Extension Trial to Allow Repeat Dosing of Autologous CLL B Cells Transduced to Express Chimeric CD154 (ISF35) in Subjects Previously Treated in MDACC Protocol 2004-0914
The study is a Phase Ib extension trial that will assess the toxicity, tolerability, and safety of up to two repeated administrations of 1x10^8, 3x10^8, or 1x10^9 autologous Ad-ISF35-transduced CLL B cells given intravenously to patients with CLL who tolerated ISF35 in the prior Phase I infusion trial at M.D. Anderson.
Read the detailed description
In a previous Phase I clinical trial at M.D. Anderson, patients with CLL received an intravenous infusion of autologous leukemia cells transduced ex vivo with an adenovirus encoding the wild-type murine CD154. This treatment was well tolerated and without dose-limiting toxicity. Patients each experienced acute reductions in the leukemia-cell blood count and in the size of enlarged lymph nodes and spleen.
The infusion induced changes in circulating bystander, non-infected CLL cells and both acute and long-term clinical responses. The changes in bystander CLL cells were similar to those observed in CLL cells following ligation of CD40, which included enhanced or de novo expression of CD54, CD80, and CD86, allowing the modified CLL cells to function more effectively in presenting antigens to autologous T cells. Following CD40 ligation, CLL cells are induced to express CD95 and DR5 and to undergo changes in expression of pro- and anti-apoptotic proteins, ultimately favoring apoptosis in the CLL cells.
To build upon these results, an extension to this trial will be completed in order to assess the tolerability of repeated infusions of ISF35 and to test whether additional administrations will enhance the anti-leukemic activity exhibited in the previous Phase I trial.
- Conditions
- Chronic Lymphocytic Leukemia
- Being tested
- ISF35
- Keywords
- Chronic lymphocytic leukemia, CLL, Leukemia, Leukemia, Lymphocytic, Chronic, B-Cell, Leukemia, B-Cell, Immune System Diseases, ISF35, Ad-ISF35, Immunotherapy, Immune therapy, Active immune therapy
- Medical subject headings
- Leukemia, Lymphocytic, Chronic, B-Cell, Leukemia, Leukemia, B-Cell, Immune System Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ISF35Biological
Also called Ad-ISF35, AdISF35
Subjects participating in this study will receive up to two doses of 1x10^8, 3x10^8, or 1x10^9 autologous Ad-ISF35-transduced CLL B cells, depending on the dose they received in the previous Phase I trial.
What is being measured
The primary outcome is the main question the study is designed to answer.
Assess the toxicity, tolerability, and safety of the repeat administration of 1x10^8, 3x10^8, or 1x10^9 autologous Ad-ISF35-transduced CLL B cells in up to 9 patients with CLL who tolerated previous treatment in MDACC Protocol 2004-0914.
Measured: Duration of the trial
Secondary outcomes (3)
Assess the anti-leukemia activity of the repeat administration of Ad-ISF35 transduced CLL B cells by evaluating reduction in leukemia count, reduction in adenopathy and splenomegaly, and improvement in bone marrow function.
Measured: Duration of the trial
Assess the quality of life with repeat Ad-ISF35 treatment.
Measured: Two months
Assess pharmacodynamic endpoints including induction of T cell anti-leukemia immune responses, antibody production against autologous CLL B cells, and changes in bystander leukemia cell phenotype.
Measured: Two months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted31 Oct 2008 (estimated)
- Study startMay 2007
- Primary completionSep 2008
- Study completionSep 2008
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (53)Papers the sponsor has linked to this study.
- Other trials for Chronic Lymphocytic LeukemiaStudies 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
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 4 participants (actual)
Sponsor and investigators
- Lead sponsor
- Memgen, LLC
- Sponsor type
- Industry (pharma, biotech, devices)
- Investigators
- William G. Wierda, M.D., Ph.D., Principal investigator, M.D. Anderson Cancer Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00783588
- Sponsor's protocol ID
- CLL-35-102
- Status last verified
- Oct 2008
- First submitted
- 30 Oct 2008
- Last updated
- 31 Oct 2008
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Aguilar-Santelises M, Rottenberg ME, Lewin N, Mellstedt H, Jondal M. Bcl-2, Bax and p53 expression in B-CLL in relation to in vitro survival and clinical progression. Int J Cancer. 1996 Apr 22;69(2):114-9. doi: 10.1002/(SICI)1097-0215(19960422)69:23.0.CO;2-3.
PubMed 8608978Armitage RJ, Fanslow WC, Strockbine L, Sato TA, Clifford KN, Macduff BM, Anderson DM, Gimpel SD, Davis-Smith T, Maliszewski CR, et al. Molecular and biological characterization of a murine ligand for CD40. Nature. 1992 May 7;357(6373):80-2. doi: 10.1038/357080a0.
PubMed 1374165Bacik J, Mazumdar M, Murphy BA, Fairclough DL, Eremenco S, Mariani T, Motzer RJ, Cella D. The functional assessment of cancer therapy-BRM (FACT-BRM): a new tool for the assessment of quality of life in patients treated with biologic response modifiers. Qual Life Res. 2004 Feb;13(1):137-54. doi: 10.1023/B:QURE.0000015297.91158.01.
PubMed 15058795Banchereau J, Bazan F, Blanchard D, Briere F, Galizzi JP, van Kooten C, Liu YJ, Rousset F, Saeland S. The CD40 antigen and its ligand. Annu Rev Immunol. 1994;12:881-922. doi: 10.1146/annurev.iy.12.040194.004313.
PubMed 7516669Bosch F, Ferrer A, Lopez-Guillermo A, Gine E, Bellosillo B, Villamor N, Colomer D, Cobo F, Perales M, Esteve J, Altes A, Besalduch J, Ribera JM, Montserrat E; GELCAB (Grup per l'Estudi dels Limfomes a Catalunya i Balears). Fludarabine, cyclophosphamide and mitoxantrone in the treatment of resistant or relapsed chronic lymphocytic leukaemia. Br J Haematol. 2002 Dec;119(4):976-84. doi: 10.1046/j.1365-2141.2002.03959.x.
PubMed 12472576Caligaris-Cappio F. B-chronic lymphocytic leukemia: a malignancy of anti-self B cells. Blood. 1996 Apr 1;87(7):2615-20. No abstract available.
PubMed 8639876Cantwell MJ, Sharma S, Friedmann T, Kipps TJ. Adenovirus vector infection of chronic lymphocytic leukemia B cells. Blood. 1996 Dec 15;88(12):4676-83.
PubMed 8977261Cantwell M, Hua T, Pappas J, Kipps TJ. Acquired CD40-ligand deficiency in chronic lymphocytic leukemia. Nat Med. 1997 Sep;3(9):984-9. doi: 10.1038/nm0997-984.
PubMed 9288724Castle BE, Kishimoto K, Stearns C, Brown ML, Kehry MR. Regulation of expression of the ligand for CD40 on T helper lymphocytes. J Immunol. 1993 Aug 15;151(4):1777-88.
PubMed 8102152Castro JE, Cantwell MJ, Prusak CE, Bole J, Wierda WG, Kipps TJ. long-term followup of chronic lymphocytic leukemia patients treated with CD40-ligand (CD154) gene therapy. Blood 2003; 102(11):491a (Abstract #1790).
Cheson BD, Bennett JM, Grever M, Kay N, Keating MJ, O'Brien S, Rai KR. National Cancer Institute-sponsored Working Group guidelines for chronic lymphocytic leukemia: revised guidelines for diagnosis and treatment. Blood. 1996 Jun 15;87(12):4990-7. No abstract available.
PubMed 8652811Chu P, Deforce D, Pedersen IM, Kim Y, Kitada S, Reed JC, Kipps TJ. Latent sensitivity to Fas-mediated apoptosis after CD40 ligation may explain activity of CD154 gene therapy in chronic lymphocytic leukemia. Proc Natl Acad Sci U S A. 2002 Mar 19;99(6):3854-9. doi: 10.1073/pnas.022604399. Epub 2002 Mar 12.
PubMed 11891278Clark EA, Ledbetter JA. How B and T cells talk to each other. Nature. 1994 Feb 3;367(6462):425-8. doi: 10.1038/367425a0.
PubMed 8107800Clavio M, Miglino M, Spriano M, Pietrasanta D, Vallebella E, Celesti L, Canepa L, Pierri I, Cavaliere M, Ballerini F, Beltrami G, Rossi E, Vimercati R, Bruni R, Congiu M, Nati S, Damasio E, Santini G, Gobbi M. First line Fludarabine treatment of symptomatic chronic lymphoproliferative diseases: clinical results and molecular analysis of minimal residual disease. Eur J Haematol. 1998 Sep;61(3):197-203. doi: 10.1111/j.1600-0609.1998.tb01084.x.
PubMed 9753416Dicker F, Kater AP, Fukuda T, Kipps TJ. Fas-ligand (CD178) and TRAIL synergistically induce apoptosis of CD40-activated chronic lymphocytic leukemia B cells. Blood. 2005 Apr 15;105(8):3193-8. doi: 10.1182/blood-2003-10-3684. Epub 2004 Aug 31.
PubMed 15339846
Study at a glance
From the registry record, last updated by the sponsor on 31 Oct 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 1B Extension Trial to Allow Repeat Dosing of Autologous CLL B Cells Transduced to Express Chimeric CD154 (ISF35) in Subjects Previously Treated in MDACC Protocol 2004-0914
- ClinicalTrials.gov ID
- NCT00783588
- Acronym / sponsor ID
- CLL-35-102
- Conditions
- Chronic Lymphocytic Leukemia
- Keywords
- Chronic lymphocytic leukemia, CLL, Leukemia, Leukemia, Lymphocytic, Chronic, B-Cell, Leukemia, B-Cell, Immune System Diseases, ISF35, Ad-ISF35
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 4 participants (actual)
- Lead sponsor
- Memgen, LLCIndustry (pharma, biotech, devices)
- Study start
- May 2007
- Primary completion
- Sep 2008 (actual)
- Study completion
- Sep 2008 (actual)
- First posted
- 31 Oct 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.
The study is a Phase Ib extension trial that will assess the toxicity, tolerability, and safety of up to two repeated administrations of 1x10^8, 3x10^8, or 1x10^9 autologous Ad-ISF35-transduced CLL B cells given intravenously to patients with CLL who tolerated ISF35 in the prior Phase I infusion trial at M.D. Anderson.
Detailed description
In a previous Phase I clinical trial at M.D. Anderson, patients with CLL received an intravenous infusion of autologous leukemia cells transduced ex vivo with an adenovirus encoding the wild-type murine CD154. This treatment was well tolerated and without dose-limiting toxicity. Patients each experienced acute reductions in the leukemia-cell blood count and in the size of enlarged lymph nodes and spleen.
The infusion induced changes in circulating bystander, non-infected CLL cells and both acute and long-term clinical responses. The changes in bystander CLL cells were similar to those observed in CLL cells following ligation of CD40, which included enhanced or de novo expression of CD54, CD80, and CD86, allowing the modified CLL cells to function more effectively in presenting antigens to autologous T cells. Following CD40 ligation, CLL cells are induced to express CD95 and DR5 and to undergo changes in expression of pro- and anti-apoptotic proteins, ultimately favoring apoptosis in the CLL cells.
To build upon these results, an extension to this trial will be completed in order to assess the tolerability of repeated infusions of ISF35 and to test whether additional administrations will enhance the anti-leukemic activity exhibited in the previous Phase I trial.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (18 listed)
- Subjects must have been enrolled and tolerated the single dose ISF35 in MDACC Protocol 2004-0914.
- Subjects must have adequate Ad-ISF35 transduced CLL B cells to allow for at least one additional treatment.
- Women of childbearing potential (not postmenopausal for at least one year or not surgically incapable of bearing children) must agree not to become pregnant for the duration of the study. Both men and women participants must agree to use contraception for the duration of the study.
- Subjects must have Zubrod performance status of ≤ 2.
- Subjects must have adequate hematologic, renal, hepatic, and coagulation function:
Key exclusion criteria (9 listed)
- Unresolved toxicity (Grade ≥ 2) from single administration of Add-ISF35 transduced autologous CLL B cells.
- Presence of more than 55% prolymphocytes.
- Chemotherapy (e.g., purine analogues, alkylating agents, or corticosteroids), antibody therapy, immunotherapy, radiation therapy, or participation in any investigational drug treatment within 4 weeks of enrollment into protocol or at any time during the study.
- Ongoing toxicity from prior anti-neoplastic therapy.
- Prior gene therapy (EXCEPT Ad-ISF35) or allogeneic stem cell transplantation.
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 |
|---|---|---|
| ISF35Also: Ad-ISF35, AdISF35Subjects participating in this study will receive up to two doses of 1x10^8, 3x10^8, or 1x10^9 autologous Ad-ISF35-transduced CLL B cells, depending on the dose they received in the previous Phase I trial. | Biological | – |
Primary outcome
Assess the toxicity, tolerability, and safety of the repeat administration of 1x10^8, 3x10^8, or 1x10^9 autologous Ad-ISF35-transduced CLL B cells in up to 9 patients with CLL who tolerated previous treatment in MDACC Protocol 2004-0914.
Time frame: Duration of the trial
3 secondary outcomes
Assess the anti-leukemia activity of the repeat administration of Ad-ISF35 transduced CLL B cells by evaluating reduction in leukemia count, reduction in adenopathy and splenomegaly, and improvement in bone marrow function.
Time frame: Duration of the trial
Assess the quality of life with repeat Ad-ISF35 treatment.
Time frame: Two months
Assess pharmacodynamic endpoints including induction of T cell anti-leukemia immune responses, antibody production against autologous CLL B cells, and changes in bystander leukemia cell phenotype.
Time frame: Two months
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 31 Oct 2008.
- Background: PubMed 8608978Aguilar-Santelises M, Rottenberg ME, Lewin N, Mellstedt H, Jondal M. Bcl-2, Bax and p53 expression in B-CLL in relation to in vitro survival and clinical progression. Int J Cancer. 1996 Apr 22;69(2):114-9. doi: 10.1002/(SICI)1097-0215(19960422)69:23.0.CO;2-3.
- Background: PubMed 1374165Armitage RJ, Fanslow WC, Strockbine L, Sato TA, Clifford KN, Macduff BM, Anderson DM, Gimpel SD, Davis-Smith T, Maliszewski CR, et al. Molecular and biological characterization of a murine ligand for CD40. Nature. 1992 May 7;357(6373):80-2. doi: 10.1038/357080a0.
- Background: PubMed 15058795Bacik J, Mazumdar M, Murphy BA, Fairclough DL, Eremenco S, Mariani T, Motzer RJ, Cella D. The functional assessment of cancer therapy-BRM (FACT-BRM): a new tool for the assessment of quality of life in patients treated with biologic response modifiers. Qual Life Res. 2004 Feb;13(1):137-54. doi: 10.1023/B:QURE.0000015297.91158.01.
- Background: PubMed 7516669Banchereau J, Bazan F, Blanchard D, Briere F, Galizzi JP, van Kooten C, Liu YJ, Rousset F, Saeland S. The CD40 antigen and its ligand. Annu Rev Immunol. 1994;12:881-922. doi: 10.1146/annurev.iy.12.040194.004313.
- Background: PubMed 12472576Bosch F, Ferrer A, Lopez-Guillermo A, Gine E, Bellosillo B, Villamor N, Colomer D, Cobo F, Perales M, Esteve J, Altes A, Besalduch J, Ribera JM, Montserrat E; GELCAB (Grup per l'Estudi dels Limfomes a Catalunya i Balears). Fludarabine, cyclophosphamide and mitoxantrone in the treatment of resistant or relapsed chronic lymphocytic leukaemia. Br J Haematol. 2002 Dec;119(4):976-84. doi: 10.1046/j.1365-2141.2002.03959.x.
- Background: PubMed 8639876Caligaris-Cappio F. B-chronic lymphocytic leukemia: a malignancy of anti-self B cells. Blood. 1996 Apr 1;87(7):2615-20. No abstract available.
- Background: PubMed 8977261Cantwell MJ, Sharma S, Friedmann T, Kipps TJ. Adenovirus vector infection of chronic lymphocytic leukemia B cells. Blood. 1996 Dec 15;88(12):4676-83.
- Background: PubMed 9288724Cantwell M, Hua T, Pappas J, Kipps TJ. Acquired CD40-ligand deficiency in chronic lymphocytic leukemia. Nat Med. 1997 Sep;3(9):984-9. doi: 10.1038/nm0997-984.
- Background: PubMed 8102152Castle BE, Kishimoto K, Stearns C, Brown ML, Kehry MR. Regulation of expression of the ligand for CD40 on T helper lymphocytes. J Immunol. 1993 Aug 15;151(4):1777-88.
- BackgroundCastro JE, Cantwell MJ, Prusak CE, Bole J, Wierda WG, Kipps TJ. long-term followup of chronic lymphocytic leukemia patients treated with CD40-ligand (CD154) gene therapy. Blood 2003; 102(11):491a (Abstract #1790).
- Background: PubMed 8652811Cheson BD, Bennett JM, Grever M, Kay N, Keating MJ, O'Brien S, Rai KR. National Cancer Institute-sponsored Working Group guidelines for chronic lymphocytic leukemia: revised guidelines for diagnosis and treatment. Blood. 1996 Jun 15;87(12):4990-7. No abstract available.
- Background: PubMed 11891278Chu P, Deforce D, Pedersen IM, Kim Y, Kitada S, Reed JC, Kipps TJ. Latent sensitivity to Fas-mediated apoptosis after CD40 ligation may explain activity of CD154 gene therapy in chronic lymphocytic leukemia. Proc Natl Acad Sci U S A. 2002 Mar 19;99(6):3854-9. doi: 10.1073/pnas.022604399. Epub 2002 Mar 12.
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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.
William G. Wierda, M.D., Ph.D. principal investigator
M.D. Anderson Cancer Center
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 ISF35 in people with Chronic Lymphocytic Leukemia, run by Memgen, LLC 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 18 inclusion and 9 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 31 Oct 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.
What does the primary outcome measure?
Assess the toxicity, tolerability, and safety of the repeat administration of 1x10^8, 3x10^8, or 1x10^9 autologous Ad-ISF35-transduced CLL B cells in up to 9 patients with CLL who tolerated previous treatment in MDACC Protocol 2004-0914. (time frame: Duration of the trial). 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 NCT00783588, which also lists 53 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 Oct 2008.