Breast CancerBREAST IMMUNNCT01440413
Study of the Response to a Neoadjuvant Chemotherapy Based on the Antitumor Immune Response in Localized Breast Cancer
A study testing Blood and tumor sample in people with Breast Cancer, run by Centre Leon Berard at 2 sites in France.
Trial summary
This is a prospective, non-randomized study which aims to evaluate the response to a neoadjuvant chemotherapy according to the the antitumor immune response in localized breast cancer. 40 patients will be enrolled in the study. Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Breast Cancer
- What is being tested?
- Blood and tumor sample
- Type of treatment
- Injection or infusion
- How many people
- 40 participants
- Where
- 2 sitesFrance
- Study dates
- Dec 2011to Dec 2020
- Phase
- Interventional
- 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
- Women only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Histologically proven localized breast cancer required anthracycline chemotherapy +/- trastuzumab before surgery
- Age > 18 years
- Chemotherapy with 3 anthracycline cycles to begin (doxorubicin or epirubicin)
- Any previous treatment for this cancer
- Performance Status <= 1
- Agreement for the conservation of biological samples
Show all 9Show fewer
- Covered by an medical insurance
- Signed written informed consent form
- Availability of tumoral sample collected at diagnosis
Who cannot join
- Previous surgery for the breast cancer
- Already under chemotherapy before the first blood sample
- Previous Antitumoral treatment
- Under immunosuppressive treatment
- Under corticoids during the 15 days before enrollment
- History of concomitant cancer except if it has been cured for at least 5 years
Show all 11Show fewer
- History of lymphoma or breast sarcoma
- History of chronic inflammatory disease or autoimmune disease, hepatitis B or C or immune dysfunction disease (including HIV-positive stage AIDS) known
- History of other disease which is discrepant with this study
- Deprived of liberty by court or administrative decision
- Pregnant or breastfeeding women or with no use of effective birth control methods for women of childbearing potential
Trial locations and contacts
2 sites in 1 country.
France2 sites
Centre Georges François Leclerc
Dijon, 21079
Centre Leon Berard
Lyon, 69373
About this study
This is a prospective, non-randomized study which aims to evaluate the response to a neoadjuvant chemotherapy according to the the antitumor immune response in localized breast cancer.
40 patients will be enrolled in the study. They will receive chemotherapy : 3 or 4 anthracycline cycles or 3 or 4 FEC-100 cycles followed by 3 or 4 taxane cycles.
Read more
Trastuzumab will be added to taxane for HER2+/Neu+ patients. Then, patients will be operated and receive an adjuvant treatment which will both depend on the investigator's appreciation.
Blood sample will be collected on the first day of the first chemotherapy cycle, on the first day of the third cycle, on surgery, 6 months after the surgery and in case of relapse.
Tumor sample will be collected on diagnosis as much as possible and on surgery.
Patients will be followed during 5 years.
- Conditions
- Breast Cancer
- Being tested
- Blood and tumor sample
- Keywords
- anti-tumor immune response, neo-adjuvant chemotherapy, relapse, long term survival, histo-pathological response, tumor cell death, tumor associated antigens, Calreticulin, Localized breast cancer
- Medical subject headings
- Breast Neoplasms, Recurrence
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Blood and tumor sampleBiological
Blood samples will be collected on the first day of the first cycle of chemotherapy (before injection of chemotherapy), on the first day of the third cycle (before injection of chemotherapy), on day of surgery and 6 months after surgery and in case of relapse.
Tumor samples will be collected on diagnosis, on surgery and on the first day of the third chemotherapy course (optional).
What is being measured
The primary outcome is the main question the study is designed to answer.
Determine the correlation between histopathological response (pCR) and induction of tumor immunity in response to neoadjuvant chemotherapy
Rate of histopathologic response (IHC). Analysis of lymphocyte subpopulations (whole blood - flow cytometry). Analysis of the frequency of immune cells, the phenotype and functional status on the site of the tumor (fixed tissue - IHC). Analysis of the functional status of sub-populations of DC and lymphocytes of innate immunity (fresh whole blood - flow cytometry). Analysis of BCR and TCR repertoires (mononuclear cells - PCR). Identification of TAA expressed by the tumor (plasma, tumor - ELISA, IHC).Analysis of the humoral response against TAA (plasma - ELISA).
Measured: Day (D) 1 chemotherapy (CT) n°1, D1 CT n°3, Surgery, 6 month post surgery
Secondary outcomes (4)
Evolution of the immune profile during management of localized breast cancer
Analysis in plasma of the rate of apoptotic tumor cells, of TAA (CEA and MUC1 ELISA), of tumor DNA and endogenous ligands of TLR (HMGB1 ELISA) Assay of cytokines and chemokines in plasma Analysis of the expression of proteins involved in the translocation of CRT to the cell surface (fixed-frozen tissue - IHC or immunoblotting) Analysis on the tumor (IHC or immunoblotting) of degradation of BAP31, activation of caspase 8/Bax/Bak, phosphorylation of eIF2 and exposure of surface CRT, KDEL receptor and ERp57
Measured: D1 CT n°1, D1 CT n°3, Surgery, 6 month post surgery
Analysis of genetic polymorphisms
Analysis of P2X7 and TLR4 polymorphisms on circulating cells (plasma)
Measured: D1 CT n°1, D1 CT n°3, Surgery, 6 month post surgery
Determination of relapse risk based on biological characteristics identified
Progression-free survival
Measured: At the end of the study (5 years of follow-up)
Determining the risk of death based on biological characteristics identified
Overall survival
Measured: At the end of the study (5 years of follow-up)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Sep 2011 (estimated)
- Study startDec 2011
- Primary completionDec 2018
- Study completionDec 2020 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (24)Papers the sponsor has linked to this study.
- Other trials for Breast CancerStudies of the same condition, open and under way.
- More trials run by Centre Leon BerardThe 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 N/A
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Centre Leon Berard
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Olivier TREDAN, MD, Principal investigator, Centre Leon Berard
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01440413
- Sponsor's protocol ID
- BREAST IMMUN
- Other IDs
- ET11-059
- Acronym
- BREAST IMMUN
- Status last verified
- Mar 2020
- First submitted
- 14 Sep 2011
- Last updated
- 24 Mar 2020
- Results posted
- No
- Data monitoring committee
- No
Publications
Apetoh L, Ghiringhelli F, Tesniere A, Obeid M, Ortiz C, Criollo A, Mignot G, Maiuri MC, Ullrich E, Saulnier P, Yang H, Amigorena S, Ryffel B, Barrat FJ, Saftig P, Levi F, Lidereau R, Nogues C, Mira JP, Chompret A, Joulin V, Clavel-Chapelon F, Bourhis J, Andre F, Delaloge S, Tursz T, Kroemer G, Zitvogel L. Toll-like receptor 4-dependent contribution of the immune system to anticancer chemotherapy and radiotherapy. Nat Med. 2007 Sep;13(9):1050-9. doi: 10.1038/nm1622. Epub 2007 Aug 19.
PubMed 17704786Banchereau J, Briere F, Caux C, Davoust J, Lebecque S, Liu YJ, Pulendran B, Palucka K. Immunobiology of dendritic cells. Annu Rev Immunol. 2000;18:767-811. doi: 10.1146/annurev.immunol.18.1.767.
PubMed 10837075Bates GJ, Fox SB, Han C, Leek RD, Garcia JF, Harris AL, Banham AH. Quantification of regulatory T cells enables the identification of high-risk breast cancer patients and those at risk of late relapse. J Clin Oncol. 2006 Dec 1;24(34):5373-80. doi: 10.1200/JCO.2006.05.9584.
PubMed 17135638Bear HD, Anderson S, Smith RE, Geyer CE Jr, Mamounas EP, Fisher B, Brown AM, Robidoux A, Margolese R, Kahlenberg MS, Paik S, Soran A, Wickerham DL, Wolmark N. Sequential preoperative or postoperative docetaxel added to preoperative doxorubicin plus cyclophosphamide for operable breast cancer:National Surgical Adjuvant Breast and Bowel Project Protocol B-27. J Clin Oncol. 2006 May 1;24(13):2019-27. doi: 10.1200/JCO.2005.04.1665. Epub 2006 Apr 10.
PubMed 16606972Blay JY, Chauvin F, Le Cesne A, Anglaret B, Bouhour D, Lasset C, Freyer G, Philip T, Biron P. Early lymphopenia after cytotoxic chemotherapy as a risk factor for febrile neutropenia. J Clin Oncol. 1996 Feb;14(2):636-43. doi: 10.1200/JCO.1996.14.2.636.
PubMed 8636781Borg C, Ray-Coquard I, Philip I, Clapisson G, Bendriss-Vermare N, Menetrier-Caux C, Sebban C, Biron P, Blay JY. CD4 lymphopenia as a risk factor for febrile neutropenia and early death after cytotoxic chemotherapy in adult patients with cancer. Cancer. 2004 Dec 1;101(11):2675-80. doi: 10.1002/cncr.20688.
PubMed 15503313Chapman C, Murray A, Chakrabarti J, Thorpe A, Woolston C, Sahin U, Barnes A, Robertson J. Autoantibodies in breast cancer: their use as an aid to early diagnosis. Ann Oncol. 2007 May;18(5):868-73. doi: 10.1093/annonc/mdm007. Epub 2007 Mar 7.
PubMed 17347129Disis ML, Knutson KL, Schiffman K, Rinn K, McNeel DG. Pre-existent immunity to the HER-2/neu oncogenic protein in patients with HER-2/neu overexpressing breast and ovarian cancer. Breast Cancer Res Treat. 2000 Aug;62(3):245-52. doi: 10.1023/a:1006438507898.
PubMed 11072789Domschke C, Schuetz F, Ge Y, Seibel T, Falk C, Brors B, Vlodavsky I, Sommerfeldt N, Sinn HP, Kuhnle MC, Schneeweiss A, Scharf A, Sohn C, Schirrmacher V, Moldenhauer G, Momburg F, Beckhove P. Intratumoral cytokines and tumor cell biology determine spontaneous breast cancer-specific immune responses and their correlation to prognosis. Cancer Res. 2009 Nov 1;69(21):8420-8. doi: 10.1158/0008-5472.CAN-09-1627. Epub 2009 Oct 20.
PubMed 19843863Fan C, Oh DS, Wessels L, Weigelt B, Nuyten DS, Nobel AB, van't Veer LJ, Perou CM. Concordance among gene-expression-based predictors for breast cancer. N Engl J Med. 2006 Aug 10;355(6):560-9. doi: 10.1056/NEJMoa052933.
PubMed 16899776Guckel B, Rentzsch C, Nastke MD, Marme A, Gruber I, Stevanovic S, Kayser S, Wallwiener D. Pre-existing T-cell immunity against mucin-1 in breast cancer patients and healthy volunteers. J Cancer Res Clin Oncol. 2006 Apr;132(4):265-74. doi: 10.1007/s00432-005-0064-6. Epub 2005 Dec 22.
PubMed 16374613Loprinzi CL, Thome SD. Understanding the utility of adjuvant systemic therapy for primary breast cancer. J Clin Oncol. 2001 Feb 15;19(4):972-9. doi: 10.1200/JCO.2001.19.4.972.
PubMed 11181659Ray-Coquard I, Ghesquiere H, Bachelot T, Borg C, Biron P, Sebban C, LeCesne A, Chauvin F, Blay JY; ELYPSE Study Group. Identification of patients at risk for early death after conventional chemotherapy in solid tumours and lymphomas. Br J Cancer. 2001 Sep 14;85(6):816-22. doi: 10.1054/bjoc.2001.2011.
PubMed 11556830Remontet L, Esteve J, Bouvier AM, Grosclaude P, Launoy G, Menegoz F, Exbrayat C, Tretare B, Carli PM, Guizard AV, Troussard X, Bercelli P, Colonna M, Halna JM, Hedelin G, Mace-Lesec'h J, Peng J, Buemi A, Velten M, Jougla E, Arveux P, Le Bodic L, Michel E, Sauvage M, Schvartz C, Faivre J. Cancer incidence and mortality in France over the period 1978-2000. Rev Epidemiol Sante Publique. 2003 Feb;51(1 Pt 1):3-30.
PubMed 12684578Rentzsch C, Kayser S, Stumm S, Watermann I, Walter S, Stevanovic S, Wallwiener D, Guckel B. Evaluation of pre-existent immunity in patients with primary breast cancer: molecular and cellular assays to quantify antigen-specific T lymphocytes in peripheral blood mononuclear cells. Clin Cancer Res. 2003 Oct 1;9(12):4376-86.
PubMed 14555509
Study at a glance
From the registry record, last updated by the sponsor on 24 Mar 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Study of the Response to a Neoadjuvant Chemotherapy Based on the Antitumor Immune Response in Localized Breast Cancer
- ClinicalTrials.gov ID
- NCT01440413
- Acronym / sponsor ID
- BREAST IMMUN / BREAST IMMUN
- Conditions
- Breast Cancer
- Keywords
- anti-tumor immune response, neo-adjuvant chemotherapy, relapse, long term survival, histo-pathological response, tumor cell death, tumor associated antigens, Calreticulin
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Centre Leon BerardUniversity, hospital or other
- Study start
- Dec 2011 (actual)
- Primary completion
- Dec 2018 (actual)
- Study completion
- Dec 2020 (estimated)
- First posted
- 26 Sep 2011 (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.
This is a prospective, non-randomized study which aims to evaluate the response to a neoadjuvant chemotherapy according to the the antitumor immune response in localized breast cancer.
40 patients will be enrolled in the study. They will receive chemotherapy : 3 or 4 anthracycline cycles or 3 or 4 FEC-100 cycles followed by 3 or 4 taxane cycles.
Trastuzumab will be added to taxane for HER2+/Neu+ patients. Then, patients will be operated and receive an adjuvant treatment which will both depend on the investigator's appreciation.
Blood sample will be collected on the first day of the first chemotherapy cycle, on the first day of the third cycle, on surgery, 6 months after the surgery and in case of relapse.
Tumor sample will be collected on diagnosis as much as possible and on surgery.
Patients will be followed during 5 years.
Study design
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (9 listed)
- Histologically proven localized breast cancer required anthracycline chemotherapy +/- trastuzumab before surgery
- Age > 18 years
- Chemotherapy with 3 anthracycline cycles to begin (doxorubicin or epirubicin)
- Any previous treatment for this cancer
- Performance Status <= 1
Key exclusion criteria (11 listed)
- Previous surgery for the breast cancer
- Already under chemotherapy before the first blood sample
- Previous Antitumoral treatment
- Under immunosuppressive treatment
- Under corticoids during the 15 days before enrollment
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 |
|---|---|---|
| Blood and tumor sampleBlood samples will be collected on the first day of the first cycle of chemotherapy (before injection of chemotherapy), on the first day of the third cycle (before injection of chemotherapy), on day of surgery and 6 months after surgery and in case of relapse. Tumor samples will be collected on diagnosis, on surgery and on the first day of the third chemotherapy course (optional). | Biological | – |
Primary outcome
Determine the correlation between histopathological response (pCR) and induction of tumor immunity in response to neoadjuvant chemotherapy
Time frame: Day (D) 1 chemotherapy (CT) n°1, D1 CT n°3, Surgery, 6 month post surgery
Rate of histopathologic response (IHC). Analysis of lymphocyte subpopulations (whole blood - flow cytometry). Analysis of the frequency of immune cells, the phenotype and functional status on the site of the tumor (fixed tissue - IHC). Analysis of the functional status of sub-populations of DC and lymphocytes of innate immunity (fresh whole blood - flow cytometry). Analysis of BCR and TCR repertoires (mononuclear cells - PCR). Identification of TAA expressed by the tumor (plasma, tumor - ELISA, IHC).Analysis of the humoral response against TAA (plasma - ELISA).
4 secondary outcomes
Evolution of the immune profile during management of localized breast cancer
Time frame: D1 CT n°1, D1 CT n°3, Surgery, 6 month post surgery
Analysis of genetic polymorphisms
Time frame: D1 CT n°1, D1 CT n°3, Surgery, 6 month post surgery
Determination of relapse risk based on biological characteristics identified
Time frame: At the end of the study (5 years of follow-up)
Determining the risk of death based on biological characteristics identified
Time frame: At the end of the study (5 years of follow-up)
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Mar 2020.
- Background: PubMed 17704786Apetoh L, Ghiringhelli F, Tesniere A, Obeid M, Ortiz C, Criollo A, Mignot G, Maiuri MC, Ullrich E, Saulnier P, Yang H, Amigorena S, Ryffel B, Barrat FJ, Saftig P, Levi F, Lidereau R, Nogues C, Mira JP, Chompret A, Joulin V, Clavel-Chapelon F, Bourhis J, Andre F, Delaloge S, Tursz T, Kroemer G, Zitvogel L. Toll-like receptor 4-dependent contribution of the immune system to anticancer chemotherapy and radiotherapy. Nat Med. 2007 Sep;13(9):1050-9. doi: 10.1038/nm1622. Epub 2007 Aug 19.
- Background: PubMed 10837075Banchereau J, Briere F, Caux C, Davoust J, Lebecque S, Liu YJ, Pulendran B, Palucka K. Immunobiology of dendritic cells. Annu Rev Immunol. 2000;18:767-811. doi: 10.1146/annurev.immunol.18.1.767.
- Background: PubMed 17135638Bates GJ, Fox SB, Han C, Leek RD, Garcia JF, Harris AL, Banham AH. Quantification of regulatory T cells enables the identification of high-risk breast cancer patients and those at risk of late relapse. J Clin Oncol. 2006 Dec 1;24(34):5373-80. doi: 10.1200/JCO.2006.05.9584.
- Background: PubMed 16606972Bear HD, Anderson S, Smith RE, Geyer CE Jr, Mamounas EP, Fisher B, Brown AM, Robidoux A, Margolese R, Kahlenberg MS, Paik S, Soran A, Wickerham DL, Wolmark N. Sequential preoperative or postoperative docetaxel added to preoperative doxorubicin plus cyclophosphamide for operable breast cancer:National Surgical Adjuvant Breast and Bowel Project Protocol B-27. J Clin Oncol. 2006 May 1;24(13):2019-27. doi: 10.1200/JCO.2005.04.1665. Epub 2006 Apr 10.
- Background: PubMed 8636781Blay JY, Chauvin F, Le Cesne A, Anglaret B, Bouhour D, Lasset C, Freyer G, Philip T, Biron P. Early lymphopenia after cytotoxic chemotherapy as a risk factor for febrile neutropenia. J Clin Oncol. 1996 Feb;14(2):636-43. doi: 10.1200/JCO.1996.14.2.636.
- Background: PubMed 15503313Borg C, Ray-Coquard I, Philip I, Clapisson G, Bendriss-Vermare N, Menetrier-Caux C, Sebban C, Biron P, Blay JY. CD4 lymphopenia as a risk factor for febrile neutropenia and early death after cytotoxic chemotherapy in adult patients with cancer. Cancer. 2004 Dec 1;101(11):2675-80. doi: 10.1002/cncr.20688.
- Background: PubMed 17347129Chapman C, Murray A, Chakrabarti J, Thorpe A, Woolston C, Sahin U, Barnes A, Robertson J. Autoantibodies in breast cancer: their use as an aid to early diagnosis. Ann Oncol. 2007 May;18(5):868-73. doi: 10.1093/annonc/mdm007. Epub 2007 Mar 7.
- Background: PubMed 11072789Disis ML, Knutson KL, Schiffman K, Rinn K, McNeel DG. Pre-existent immunity to the HER-2/neu oncogenic protein in patients with HER-2/neu overexpressing breast and ovarian cancer. Breast Cancer Res Treat. 2000 Aug;62(3):245-52. doi: 10.1023/a:1006438507898.
- Background: PubMed 19843863Domschke C, Schuetz F, Ge Y, Seibel T, Falk C, Brors B, Vlodavsky I, Sommerfeldt N, Sinn HP, Kuhnle MC, Schneeweiss A, Scharf A, Sohn C, Schirrmacher V, Moldenhauer G, Momburg F, Beckhove P. Intratumoral cytokines and tumor cell biology determine spontaneous breast cancer-specific immune responses and their correlation to prognosis. Cancer Res. 2009 Nov 1;69(21):8420-8. doi: 10.1158/0008-5472.CAN-09-1627. Epub 2009 Oct 20.
- Background: PubMed 16899776Fan C, Oh DS, Wessels L, Weigelt B, Nuyten DS, Nobel AB, van't Veer LJ, Perou CM. Concordance among gene-expression-based predictors for breast cancer. N Engl J Med. 2006 Aug 10;355(6):560-9. doi: 10.1056/NEJMoa052933.
- Background: PubMed 16374613Guckel B, Rentzsch C, Nastke MD, Marme A, Gruber I, Stevanovic S, Kayser S, Wallwiener D. Pre-existing T-cell immunity against mucin-1 in breast cancer patients and healthy volunteers. J Cancer Res Clin Oncol. 2006 Apr;132(4):265-74. doi: 10.1007/s00432-005-0064-6. Epub 2005 Dec 22.
- Background: PubMed 11181659Loprinzi CL, Thome SD. Understanding the utility of adjuvant systemic therapy for primary breast cancer. J Clin Oncol. 2001 Feb 15;19(4):972-9. doi: 10.1200/JCO.2001.19.4.972.
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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.
Olivier TREDAN, MD principal investigator
Centre Leon Berard
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Blood and tumor sample in people with Breast Cancer, run by Centre Leon Berard at 2 sites in France.
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 11 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 24 Mar 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in France. 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?
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?
Determine the correlation between histopathological response (pCR) and induction of tumor immunity in response to neoadjuvant chemotherapy (time frame: Day (D) 1 chemotherapy (CT) n°1, D1 CT n°3, Surgery, 6 month post surgery). 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 NCT01440413, which also lists 24 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 24 Mar 2020.