NSABP B-47: A randomized phase III trial of adjuvant therapy comparing chemotherapy alone to chemotherapy plus trastuzumab in women with node-positive or high-risk node-negative HER2-low invasive breast cancer.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. TPS1139-TPS1139 ◽  
Author(s):  
Louis Fehrenbacher ◽  
Jong-Hyeon Jeong ◽  
Priya Rastogi ◽  
Charles E. Geyer ◽  
Soonmyung Paik ◽  
...  
Keyword(s):  
Breast Cancer ◽  
High Risk ◽  
Statistical Power ◽  
Disease Free Survival ◽  
Phase Iii ◽  
Adjuvant Radiation ◽  
Weight Changes ◽  
Node Negative ◽  
Node Positive ◽  
Her2 Breast Cancer

TPS1139 Background: Adjuvant trastuzumab trials in HER2+ breast cancer (BC) demonstrated a large reduction in recurrence and death. Central testing showed HER2 non-amplified participants derived similar benefit. Among HER2-amplified patients (pts), multiple studies showed no effect on benefit by degree of amplification. Blinded internal and external review confirmed the non-amplified nature of the HER2 normal group. Based on these findings, NSABP B-47, sponsored by the NCI, was activated January 2011 and is actively accruing. The study is NCI central IRB approved, open via the CTSU, and endorsed by SWOG, ECOG, and RTOG. Methods: Study: Chemotherapy treatment is by physician choice: The non-anthracycline regimen is TC (docetaxel 75 mg/m2, cyclophosphamide (C) 600 mg/m2) IV q 3 wks for 6 cycles; the anthracycline regimen is AC → WP (doxorubicin 60 mg/m2 and C 600 mg/m2 IV either q 3 wks or q 2 wks [investigator discretion] for 4 cycles → paclitaxel 80 mg/m2 IV wkly for 12 doses). Pts are randomly assigned to chemotherapy with or without trastuzumab for 1 year. Pts receive adjuvant radiation therapy and endocrine therapy, as clinically indicated. Detailed menstrual history, concurrent medications, weight changes, and biomarkers (estrogen, stress, inflammation), are being collected. Eligibility: Eligibility includes: node positive or high risk node negative BC pts; HER2 IHC 1+ or 2+ scores, but non amplified by FISH; normal cardiac, renal, and liver function. Detailed eligibility will be provided. Statistical Design: The primary aim is to determine whether the addition of trastuzumab to chemotherapy improves invasive disease-free survival (IDFS). 3,260 pts will be enrolled to provide statistical power of 0.9 to detect a 33% reduction in the hazard rate of IDFS using a one-sided alpha level of 0.025. Progress: Protocol was activated in January 2011. First pt was entered in February 2011. As of January 23, 2013, 1,416 of 3,260 (43.4 %) pts have been enrolled. Updated information on enrollment and study background will be provided. Support: NCI U10-12027, -37377, 69651, 69974, and Genentech, Inc. Clinical trial information: NCT01275677.

NSABP B-47: A phase III trial of adjuvant therapy comparing chemotherapy alone (six cycles of docetaxel plus cyclophosphamide or four cycles of doxorubicin plus cyclophosphamide followed by weekly paclitaxel) to chemotherapy plus trastuzumab in women with node-positive or high-risk, node-negative, HER2-low invasive breast cancer.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. TPS1142-TPS1142
Author(s):  
Louis Fehrenbacher ◽  
Jong-Hyeon Jeong ◽  
Priya Rastogi ◽  
Charles E. Geyer ◽  
Soonmyung Paik ◽  
...  
Keyword(s):  
Breast Cancer ◽  
High Risk ◽  
Chemotherapy Regimen ◽  
Phase Iii ◽  
Weekly Paclitaxel ◽  
Loading Dose ◽  
Node Negative ◽  
Node Positive ◽  
Trastuzumab Therapy ◽  
Her2 Breast Cancer

TPS1142 Background: Adjuvant studies utilizing trastuzumab in early HER2+ breast cancer demonstrated a large reduction in recurrence and death. Post-enrollment central testing showed HER2 non-amplified participants derived similar benefit. Methods: Selection of one of the two chemotherapy regimens is by physician choice: The non-anthracycline regimen is TC (docetaxel 75 mg/m2, cyclophosphamide 600 mg/m2) administered IV every 3 weeks for 6 cycles; the anthracycline regimen is AC followed by WP (doxorubicin 60 mg/m2 and cyclophosphamide 600 mg/m2 administered IV either every 3 weeks or every 2 weeks [per investigator discretion] for 4 cycles followed by paclitaxel 80 mg/m2 IV weekly for 12 doses). Patients are randomly assigned to receive chemotherapy with or without trastuzumab therapy. For patients receiving the TC chemotherapy regimen, trastuzumab is given every 3 weeks during and following chemotherapy until 1 year after the first trastuzumab dose (8 mg/kg loading dose; 6 mg/kg for the remaining doses). For patients receiving the AC followed by WP chemotherapy regimen, trastuzumab begins with the first dose of weekly paclitaxel and will be given weekly for 12 doses (4 mg/kg loading dose; 2 mg/kg for the remaining weekly doses). Following completion of WP, trastuzumab therapy continues with 6 mg/kg doses given every 3 weeks for a total of 1 year. Eligibility: Eligibility includes: node positive or high risk node negative female breast cancer patients; HER2 IHC 1+ or 2+ scores, but non amplified by FISH Statistical Design: The primary aim is to determine whether the addition of trastuzumab to chemotherapy improves invasive disease-free survival (IDFS). 3260 patients will be enrolled to provide statistical power of 0.9 to detect a 33% reduction in the hazard rate of IDFS using a one-sided alpha level of 0.025. Progress: Protocol was activated in January 2011. As of January 27, 2012, 486 of 3260 patients have been enrolled. Supported by NCI U10-12027, -37377, 69651, 69974, and Genentech, Inc.

Sequenced Compared With Simultaneous Anthracycline and Cyclophosphamide in High-Risk Stage I and II Breast Cancer: Final Analysis From INT-0137 (S9313)

2007 ◽  
Vol 25 (6) ◽  
pp. 656-661 ◽  
Author(s):  
Hannah M. Linden ◽  
Charles M. Haskell ◽  
Stephanie J. Green ◽  
C. Kent Osborne ◽  
George W. Sledge ◽  
...  
Keyword(s):  
Breast Cancer ◽  
High Risk ◽  
Total Dose ◽  
Early Stage ◽  
Randomized Study ◽  
Disease Free Survival ◽  
Phase Iii ◽  
Hematologic Toxicity ◽  
Breast Cancer Patients ◽  
Node Negative

Purpose We conducted a phase III randomized study of two adjuvant treatment schedules of doxorubicin (A) and cyclophosphamide (C) in early-stage breast cancer to determine if administration of sequential single agents (A → C) results in superior disease-free survival (DFS) and overall survival (OS) versus the same total dose given in combination (AC). Patients and Methods High-risk node-negative or low-risk node-positive breast cancer patients received AC given: (arm I) concurrently (AC) doxorubicin 54 mg/m2 and cyclophosphamide 1.2 g/m2 intravenously (IV) every 3 weeks for six cycles; or (arm II) in sequence (A → C) doxorubicin 40.5 mg/m2 IV days 1 and 2 every 3 weeks for four cyles followed by cyclophosphamide 2.4 gm/m2 IV every 2 weeks for three cycles. Total dose and duration were identical, but the intensity of each drug was increased on A → C. Both arms included granulocyte colony-stimulating factor support and prophylactic antibiotics. All but premenopausal women with receptor negative tumors received tamoxifen after chemotherapy. Results Between 1994 and 1997, 3,176 patients were randomly assigned. Arms were well balanced; 48% of eligible patients were node-negative and 48% were estrogen receptor–positive. No significant differences in OS or DFS were observed; 5-year estimates of OS (95% CI) were 88% (87% to 90%) on AC and 89% (87% to 91%) on A → C. Grade 4 hematologic toxicity was greater on A → C, but nonhematological grade 4 was similar. Conclusion The overall result does not support superiority of dose-intense sequenced single agents. The greater toxicity of higher doses of single agents does not support their sequential use.

A011801 (CompassHER2 RD): Postneoadjuvant T-DM1 + tucatinib/placebo in patients with residual HER2-positive invasive breast cancer.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. TPS595-TPS595
Author(s):  
Ciara Catherine Maria O'Sullivan ◽  
Karla V. Ballman ◽  
Linda Mackie McCall ◽  
Tyler J. Zemla ◽  
Anna Weiss ◽  
...  
Keyword(s):  
Breast Cancer ◽  
High Risk ◽  
Neoadjuvant Therapy ◽  
Disease Free Survival ◽  
Phase Iii ◽  
Absolute Difference ◽  
Lymph Node Status ◽  
Adjuvant Radiation ◽  
Free Survival ◽  
Disease Free

TPS595 Background: Patients (pts) with HER2+ early breast cancer (EBC) and invasive residual disease (RD) after neoadjuvant therapy (NAT) have a higher risk of relapse than pts with a pathologic complete response (pCR). Post neoadjuvant T-DM1 has improved invasive disease-free survival (iDFS), but pts with estrogen receptor (ER)-negative or nodal RD have suboptimal outcomes and recurrences in the central nervous system are a problem. More effective treatment strategies are needed. The CompassHER2 trials, EA1181 and A011801, leverage pCR to tailor post neoadjuvant therapy in HER2+ EBC. EA1181 is a NAT de-escalation trial of a taxane, trastuzumab and pertuzumab (THP) in clinical stage II-III HER2+ EBC; pts with a pCR complete HP +/- adjuvant radiation (RT) +/- endocrine therapy (ET). A011801 is an escalation trial for pts with high risk HER2+ RD after NAT, examining addition of the HER2 selective tyrosine kinase inhibitor (TKI) tucatinib to adjuvant T-DM1. Methods: Eligibility and Intervention: Pts. with high-risk HER2+ RD (e.g. ER-,node-positive, or both) after a predefined course of neoadjuvant HER2-directed treatment are randomized 1:1 to adjuvant T-DM1+ placebo (pb), vs. T-DM1 and tucatinib with adjuvant RT +/- ET. Eligibility criteria include completion of ≥ 6 cycles of NAT, including ≥ 9 weeks of T and H +/- P. All chemotherapy (CT) must be completed preoperatively unless participating in EA1181 (̃15-30% enrollees); these pts must receive postoperative CT to complete ≥ 6 cycles prior to enrollment on A011801. Pts who received prior HER2-targeted TKIs or antibody-drug conjugates are ineligible. Objectives: The primary objective is to determine if iDFS is higher with addition of T-DM1 to tucatinib in pts with HER2+ EBC with RD after NAT; secondary endpoints include overall survival, breast cancer free survival, distant recurrence-free survival, brain metastases-free survival and disease-free survival. Correlative objectives include the association of i) tumor infiltrating lymphocyte (TILs) levels in the primary tumor and RD with iDFS, ii) TILs with tucatinib benefit, iii) iDFS and circulating tumor cells (CTC) at serial timepoints and iv) the magnitude of benefit of tucatinib (iDFS) in pts with/without detectable pretreatment CTCs. Quality of life and pharmacokinetic endpoints will also be evaluated. Statistics: A011801 is a prospective, double-blind, randomized, phase III superiority trial; stratified by i) receipt of postoperative CT (Y/N), ii) hormone receptor-status (+/-),and iii) pathologic lymph node status (+/-). The study targets an absolute difference of 5% in iDFS (control vs. experimental arm 82% & 87%, HR = 0.7), with a two-sided alpha of 0.05 and power of 80%. The sample size is 981; target accrual = 1031 pts; activation and completion dates are 01/6/21 and ̃ 01/2028. Support: U10CA180821, U10CA180882; Seagen Inc; ClinicalTrials.gov Identifier: NCT04457596 Clinical trial information: NCT04457596.

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