PainPhase 3bone metsNCT00610272
Optimization of Radiotherapy in Treatment of Painful Bone Metastasis
A Phase 3 study testing Radiotherapy in people with Pain and Bone Metastasis, run by International Atomic Energy Agency at 12 sites in 11 countries.
Trial summary
Bone metastasis is one of the most frequent end complications of the cancer. Radiation therapy is the mainstay of treatment in this disease. Single fraction radiotherapy in both single and multiple bone metastasis is widely used, but optimization of the single dose fractionation is needed. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Pain, Bone Metastasis
- What is being tested?
- Radiotherapy
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 650 participants
- Where
- 12 sitesin 11 countries
- Study dates
- Jan 2008to Aug 2012
- Phase
- Phase 3
- 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
- histological diagnosis of malignancy associated with radiological evidence of painful bone metastasis
- If patients with two sites of pain requiring separate treatment are to be entered, the same randomized treatment option will be used for both sites, but response at each site will be scored and analyzed separately.
- age > 18 years
- anticipated remaining life of at least 12 weeks (3 months)
- informed consent
Who cannot join
- Primary histology myeloma
- Sites of previous RT or previous radioisotope treatment
- conditions or circumstances, which may interfere with treatment or follow-up
- complicated bone metastasis (pathological fractures, metastatic spinal cord compression)
Trial locations and contacts
12 sites in 11 countries.
12 sites in 11 countries
Spain2 sites
Hospital Clinic Universidad de Barcelona
Barcelona, 08036
Hospital Son Dureta
Palma de Mallorca, 07014
Algeria1 site
Centre Pierre et Marie Curie, Centre hospitalier universitaire Mustapha (CHU)
Algiers, 16016
Brazil1 site
Irmandade de Santa Casa de Misericordia de Porto Alegre
Porto Alegre, 90020-090
Lithuania1 site
Institute of Oncology, University of Vilinius
Vilnius, 08660
North Macedonia1 site
Institute of Radiotherapy and Oncology
Skopje, 1000
About this study
Official title: Investigation of Optimal Radiotherapy Regimen and Type of Irradiation in Treatment of Painful Bone Metastasis
Bone metastasis is one of the most frequent end complications of the cancer. Radiation therapy is the mainstay of treatment in this disease. Single fraction radiotherapy in both single and multiple bone metastasis is widely used, but optimization of the single dose fractionation is needed. Two different regimens of radiotherapy dose fractionation will be investigated in both single and multiple bone metastasis and endpoints will include pain relief as well as toxicity and quality of life.
Read the detailed description
PROTOCOL SCHEMA
Group A Treatment of single site of painful bone metastasis:
Arm 1: 4 Gy single fraction; mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks
Arm 2: 8 Gy single fraction, mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks
Group B Treatment of multiple bone metastasis: lower hemibody radiotherapy (LHBI):
Arm 3: 8 Gy in a single fraction; retreatments > 4 weeks, using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy) ; second reirradiation with 8 Gy using local RT fields optional (at discretion of PI);
Arm 4: 12 Gy in 4 fractions of 3 Gy in 2 consecutive days interfraction interval of a minimum of 6 hrs; retreatments > 4 weeks using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy); second reirradiation with 8 Gy using local RT fields optional (at discretion of PI) ;
- Conditions
- Pain, Bone Metastasis
- Being tested
- Radiotherapy
- Keywords
- single bone metastasis, multiple bone metastasis, pain relief, radiotherapy
- Medical subject headings
- Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
RadiotherapyRadiation
4 Gy single fraction; mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks
RadiotherapyRadiation
8 Gy single fraction, mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks
RadiotherapyRadiation
8 Gy in a single fraction; retreatments > 4 weeks, using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy) ; second reirradiation with 8 Gy using local RT fields optional (at discretion of PI);
RadiotherapyRadiation
12 Gy in 4 fractions of 3 Gy in 2 consecutive days interfraction interval of a minimum of 6 hrs; retreatments > 4 weeks using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy); second reirradiation with 8 Gy using local RT fields optional (at discretion of PI) ;
| Study group | Role | What they receive |
|---|---|---|
| Single Site Radiation 4Gy Fraction | Experimental | 4 Gy single fraction; mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks Receives: Radiation: Radiotherapy |
| Single Site Radiation 8Gy Fraction | Active comparator | 8 Gy single fraction, mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks Receives: Radiation: Radiotherapy |
| Multiple Sites Radiation 8Gy Fraction | Active comparator | 8 Gy in a single fraction; retreatments > 4 weeks, using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy) ; second reirradiation with 8 Gy using local RT fields optional (at discretion of PI); Receives: Radiation: Radiotherapy |
| Multiple Sites Radiation 12Gy Fraction | Experimental | 12 Gy in 4 fractions of 3 Gy in 2 consecutive days interfraction interval of a minimum of 6 hrs; retreatments > 4 weeks using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy); second reirradiation with 8 Gy using local RT fields optional (at discretion of PI) ; Receives: Radiation: Radiotherapy |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pain Relief (response rate) at 4 weeks
Measured: Up to 52 weeks
Secondary outcomes (4)
Onset and Duration of Pain Relief in Responders
Measured: Up to 52 weeks
Toxicity
Measured: Up to 52 weeks
Quality of Life
Measured: Up to 52 weeks
Rates of Pathological Fractures and Spinal Cord Compression
Measured: Up to 52 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Feb 2008 (estimated)
- Study startJan 2008
- Primary completionApr 2012
- Study completionAug 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (7)Papers the sponsor has linked to this study.
- Other trials for PainStudies 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 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 650 participants (actual)
Sponsor and investigators
- Lead sponsor
- International Atomic Energy Agency
- Sponsor type
- Other government
- Responsible party
- Sponsor
- Investigators
- Elena Fidarova, MD, Study chair, International Atomic Energy Agency
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00610272
- Sponsor's protocol ID
- E33028
- Acronym
- bone mets
- Status last verified
- Aug 2013
- First submitted
- 25 Jan 2008
- Last updated
- 7 Aug 2013
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Salazar OM, DaMotta NW, Bridgman SM, Cardiges NM, Slawson RG. Fractionated half-body irradiation for pain palliation in widely metastatic cancers: comparison with single dose. Int J Radiat Oncol Biol Phys. 1996 Aug 1;36(1):49-60. doi: 10.1016/s0360-3016(96)00248-9.
PubMed 8823258Salazar OM, Sandhu T, da Motta NW, Escutia MA, Lanzos-Gonzales E, Mouelle-Sone A, Moscol A, Zaharia M, Zaman S. Fractionated half-body irradiation (HBI) for the rapid palliation of widespread, symptomatic, metastatic bone disease: a randomized Phase III trial of the International Atomic Energy Agency (IAEA). Int J Radiat Oncol Biol Phys. 2001 Jul 1;50(3):765-75. doi: 10.1016/s0360-3016(01)01495-x.
PubMed 11395246Mithal NP, Needham PR, Hoskin PJ. Retreatment with radiotherapy for painful bone metastases. Int J Radiat Oncol Biol Phys. 1994 Jul 30;29(5):1011-4. doi: 10.1016/0360-3016(94)90396-4.
PubMed 7521863Hoskin PJ, Price P, Easton D, Regan J, Austin D, Palmer S, Yarnold JR. A prospective randomised trial of 4 Gy or 8 Gy single doses in the treatment of metastatic bone pain. Radiother Oncol. 1992 Feb;23(2):74-8. doi: 10.1016/0167-8140(92)90338-u.
PubMed 1372126Wu JS, Wong R, Johnston M, Bezjak A, Whelan T; Cancer Care Ontario Practice Guidelines Initiative Supportive Care Group. Meta-analysis of dose-fractionation radiotherapy trials for the palliation of painful bone metastases. Int J Radiat Oncol Biol Phys. 2003 Mar 1;55(3):594-605. doi: 10.1016/s0360-3016(02)04147-0.
PubMed 12573746Gaze MN, Kelly CG, Kerr GR, Cull A, Cowie VJ, Gregor A, Howard GC, Rodger A. Pain relief and quality of life following radiotherapy for bone metastases: a randomised trial of two fractionation schedules. Radiother Oncol. 1997 Nov;45(2):109-16. doi: 10.1016/s0167-8140(97)00101-1.
PubMed 9423999Arcangeli G, Micheli A, Arcangeli G, Giannarelli D, La Pasta O, Tollis A, Vitullo A, Ghera S, Benassi M. The responsiveness of bone metastases to radiotherapy: the effect of site, histology and radiation dose on pain relief. Radiother Oncol. 1989 Feb;14(2):95-101. doi: 10.1016/0167-8140(89)90053-4.
PubMed 2469105
Study at a glance
From the registry record, last updated by the sponsor on 7 Aug 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Investigation of Optimal Radiotherapy Regimen and Type of Irradiation in Treatment of Painful Bone Metastasis
- ClinicalTrials.gov ID
- NCT00610272
- Acronym / sponsor ID
- bone mets / E33028
- Conditions
- Pain, Bone Metastasis
- Keywords
- single bone metastasis, multiple bone metastasis, pain relief, radiotherapy
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 650 participants (actual)
- Lead sponsor
- International Atomic Energy AgencyOther government
- Study start
- Jan 2008
- Primary completion
- Apr 2012 (actual)
- Study completion
- Aug 2012 (actual)
- First posted
- 7 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.
Bone metastasis is one of the most frequent end complications of the cancer. Radiation therapy is the mainstay of treatment in this disease. Single fraction radiotherapy in both single and multiple bone metastasis is widely used, but optimization of the single dose fractionation is needed. Two different regimens of radiotherapy dose fractionation will be investigated in both single and multiple bone metastasis and endpoints will include pain relief as well as toxicity and quality of life.
Detailed description
PROTOCOL SCHEMA
Group A Treatment of single site of painful bone metastasis:
Arm 1: 4 Gy single fraction; mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks
Arm 2: 8 Gy single fraction, mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks
Group B Treatment of multiple bone metastasis: lower hemibody radiotherapy (LHBI):
Arm 3: 8 Gy in a single fraction; retreatments > 4 weeks, using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy) ; second reirradiation with 8 Gy using local RT fields optional (at discretion of PI);
Arm 4: 12 Gy in 4 fractions of 3 Gy in 2 consecutive days interfraction interval of a minimum of 6 hrs; retreatments > 4 weeks using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy); second reirradiation with 8 Gy using local RT fields optional (at discretion of PI) ;
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Single Site Radiation 4Gy Fraction | Experimental | Radiation: Radiotherapy4 Gy single fraction; mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks |
| Single Site Radiation 8Gy Fraction | Active comparator | Radiation: Radiotherapy8 Gy single fraction, mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks |
| Multiple Sites Radiation 8Gy Fraction | Active comparator | Radiation: Radiotherapy8 Gy in a single fraction; retreatments > 4 weeks, using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy) ; second reirradiation with 8 Gy using local RT fields optional (at discretion of PI); |
| Multiple Sites Radiation 12Gy Fraction | Experimental | Radiation: Radiotherapy12 Gy in 4 fractions of 3 Gy in 2 consecutive days interfraction interval of a minimum of 6 hrs; retreatments > 4 weeks using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy); second reirradiation with 8 Gy using local RT fields optional (at discretion of PI) ; |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- histological diagnosis of malignancy associated with radiological evidence of painful bone metastasis
- If patients with two sites of pain requiring separate treatment are to be entered, the same randomized treatment option will be used for both sites, but response at each site will be scored and analyzed separately.
- age > 18 years
- anticipated remaining life of at least 12 weeks (3 months)
- informed consent
Key exclusion criteria (4 listed)
- Primary histology myeloma
- Sites of previous RT or previous radioisotope treatment
- conditions or circumstances, which may interfere with treatment or follow-up
- complicated bone metastasis (pathological fractures, metastatic spinal cord compression)
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 |
|---|---|---|
| Radiotherapy4 Gy single fraction; mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks | Radiation | Single Site Radiation 4Gy Fraction |
| Radiotherapy8 Gy single fraction, mandate first retreatment if moderate or severe pain persists or recurs (as measured by categorical pain scale or VAS greater than 50 mm), >4 weeks after initial RT) retreat with 8 Gy single fraction; second retreatment is optional if moderate or severe pain recurs (as measured by categorical pain scale or VAS greater than 50 mm), retreat with 8 Gy after > 4 weeks | Radiation | Single Site Radiation 8Gy Fraction |
| Radiotherapy8 Gy in a single fraction; retreatments > 4 weeks, using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy) ; second reirradiation with 8 Gy using local RT fields optional (at discretion of PI); | Radiation | Multiple Sites Radiation 8Gy Fraction |
| Radiotherapy12 Gy in 4 fractions of 3 Gy in 2 consecutive days interfraction interval of a minimum of 6 hrs; retreatments > 4 weeks using local RT fields to sites of residual or recurrent, moderate or severe pain with a single fraction of 8 Gy); second reirradiation with 8 Gy using local RT fields optional (at discretion of PI) ; | Radiation | Multiple Sites Radiation 12Gy Fraction |
Primary outcome
Pain Relief (response rate) at 4 weeks
Time frame: Up to 52 weeks
4 secondary outcomes
Onset and Duration of Pain Relief in Responders
Time frame: Up to 52 weeks
Toxicity
Time frame: Up to 52 weeks
Quality of Life
Time frame: Up to 52 weeks
Rates of Pathological Fractures and Spinal Cord Compression
Time frame: Up to 52 weeks
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 7 Aug 2013.
- Background: PubMed 8823258Salazar OM, DaMotta NW, Bridgman SM, Cardiges NM, Slawson RG. Fractionated half-body irradiation for pain palliation in widely metastatic cancers: comparison with single dose. Int J Radiat Oncol Biol Phys. 1996 Aug 1;36(1):49-60. doi: 10.1016/s0360-3016(96)00248-9.
- Background: PubMed 11395246Salazar OM, Sandhu T, da Motta NW, Escutia MA, Lanzos-Gonzales E, Mouelle-Sone A, Moscol A, Zaharia M, Zaman S. Fractionated half-body irradiation (HBI) for the rapid palliation of widespread, symptomatic, metastatic bone disease: a randomized Phase III trial of the International Atomic Energy Agency (IAEA). Int J Radiat Oncol Biol Phys. 2001 Jul 1;50(3):765-75. doi: 10.1016/s0360-3016(01)01495-x.
- Background: PubMed 7521863Mithal NP, Needham PR, Hoskin PJ. Retreatment with radiotherapy for painful bone metastases. Int J Radiat Oncol Biol Phys. 1994 Jul 30;29(5):1011-4. doi: 10.1016/0360-3016(94)90396-4.
- Background: PubMed 1372126Hoskin PJ, Price P, Easton D, Regan J, Austin D, Palmer S, Yarnold JR. A prospective randomised trial of 4 Gy or 8 Gy single doses in the treatment of metastatic bone pain. Radiother Oncol. 1992 Feb;23(2):74-8. doi: 10.1016/0167-8140(92)90338-u.
- Background: PubMed 12573746Wu JS, Wong R, Johnston M, Bezjak A, Whelan T; Cancer Care Ontario Practice Guidelines Initiative Supportive Care Group. Meta-analysis of dose-fractionation radiotherapy trials for the palliation of painful bone metastases. Int J Radiat Oncol Biol Phys. 2003 Mar 1;55(3):594-605. doi: 10.1016/s0360-3016(02)04147-0.
- Background: PubMed 9423999Gaze MN, Kelly CG, Kerr GR, Cull A, Cowie VJ, Gregor A, Howard GC, Rodger A. Pain relief and quality of life following radiotherapy for bone metastases: a randomised trial of two fractionation schedules. Radiother Oncol. 1997 Nov;45(2):109-16. doi: 10.1016/s0167-8140(97)00101-1.
- Background: PubMed 2469105Arcangeli G, Micheli A, Arcangeli G, Giannarelli D, La Pasta O, Tollis A, Vitullo A, Ghera S, Benassi M. The responsiveness of bone metastases to radiotherapy: the effect of site, histology and radiation dose on pain relief. Radiother Oncol. 1989 Feb;14(2):95-101. doi: 10.1016/0167-8140(89)90053-4.
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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.
Elena Fidarova, MD study chair
International Atomic Energy Agency
12 sites in 11 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Radiotherapy in people with Pain and Bone Metastasis, run by International Atomic Energy Agency at 12 sites in 11 countries.
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 5 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: finished, as of the sponsor's last update on 7 Aug 2013. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 12 sites in Spain, Algeria, Brazil, Egypt, India and 6 more countries. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
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?
Pain Relief (response rate) at 4 weeks (time frame: Up to 52 weeks). 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 NCT00610272, which also lists 7 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 7 Aug 2013.