Studying Blood and DNA Samples From Patients With Breast Cancer Treated With Chemotherapy With or Without Trastuzumab
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT01562288 |
Recruitment Status :
Completed
First Posted : March 23, 2012
Last Update Posted : July 2, 2019
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
RATIONALE: Studying samples of blood and DNA in the laboratory from patients who received chemotherapy with or without trastuzumab may help doctors learn more about the effects of trastuzumab on cells. It may also help doctors understand how well patients respond to treatment.
PURPOSE: This research trial studies blood and DNA samples from patients with breast cancer treated with chemotherapy with or without trastuzumab.
Condition or disease | Intervention/treatment |
---|---|
Breast Cancer | Genetic: DNA analysis Genetic: gene expression analysis Genetic: polymerase chain reaction Other: enzyme-linked immunosorbent assay Other: laboratory biomarker analysis |
OBJECTIVES:
- To determine the role of trastuzumab in the generation of HER2-specific antibodies in breast cancer patients undergoing adjuvant combination therapy.
- To determine whether the improved disease-free period and overall survival of patients treated in the adjuvant setting with combination of chemotherapy and trastuzumab is dependent on the Fcγ receptor genotype of the patient.
OUTLINE: Previously collected serum and DNA samples are analyzed for HER2-specific antibodies and FcγR genotype by enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR).
Study Type : | Observational |
Estimated Enrollment : | 1576 participants |
Observational Model: | Case-Only |
Time Perspective: | Retrospective |
Official Title: | Adjuvant Chemotherapy Combined With Trastuzumab in the Randomized Phase III Trial N9831 Actively Immunizes Patients Against Tumor Antigens |
Actual Study Start Date : | February 2012 |
Actual Primary Completion Date : | April 2019 |
Actual Study Completion Date : | April 2019 |

Group/Cohort | Intervention/treatment |
---|---|
Observational
Previously collected serum and DNA from peripheral blood mononuclear cell samples are analyzed for HER2-specific antibodies and FcγR genotype by ELISA and PCR.
|
Genetic: DNA analysis Genetic: gene expression analysis Genetic: polymerase chain reaction Other: enzyme-linked immunosorbent assay Other: laboratory biomarker analysis |
- disease-free survival [ Time Frame: up to 1 month ]
- overall survival [ Time Frame: up to 1 month ]
Biospecimen Retention: Samples With DNA

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
• Patients with HER-2-overexpressing node-positive or high-risk node-negative breast cancer enrolled on NCCTG-N9831
* Pre- and post-treatment serum and DNA samples of patients treated with doxorubicin and cyclophosphamide followed by paclitaxel with or without trastuzumab (Herceptin®)

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01562288
Principal Investigator: | Keith L. Knutson, MD, PhD | Mayo Clinic |
Responsible Party: | Alliance for Clinical Trials in Oncology |
ClinicalTrials.gov Identifier: | NCT01562288 |
Other Study ID Numbers: |
NCCTG-N9831D-NCCTG-ICSC NCI-2012-00687 ( Registry Identifier: CTRP (Clinical Trials Reporting System) ) CDR0000726841 ( Registry Identifier: PDQ (Physician Data Query) ) |
First Posted: | March 23, 2012 Key Record Dates |
Last Update Posted: | July 2, 2019 |
Last Verified: | July 2019 |
HER2-positive breast cancer HER2-negative breast cancer stage IA breast cancer |
stage IB breast cancer stage II breast cancer stage IIIA breast cancer |
Breast Neoplasms Neoplasms by Site Neoplasms Breast Diseases Skin Diseases |