Benefit from letrozole as extended adjuvant therapy after sequential endocrine therapy: A randomized, phase III study of Gruppo Italiano Mammella (GIM).

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 504-504 ◽  
Author(s):  
Lucia Del Mastro ◽  
Mauro Mansutti ◽  
Giancarlo Bisagni ◽  
Riccardo Ponzone ◽  
Antonio Durando ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Adjuvant Therapy ◽  
Endocrine Therapy ◽  
Cox Model ◽  
Disease Free Survival ◽  
Nodal Status ◽  
Phase Iii ◽  
Primary Study ◽  
Fisher Exact Test ◽  
To Receive

504 Background: The effect of extended adjuvant endocrine therapy (ET) with aromatase inhibitors (AI) after sequential ET with tamoxifen (Tam) followed by AI for 5 years is still controversial. We conduct a clinical trial to assess different durations of ET of letrozole after tam. Methods: The GIM4 LEAD (Gruppo Italiano Mammella 4- Letrozole adjuvant therapy duration study, ClinicalTrials.gov:NCT01064635 ) was a prospective, randomized, Italian multicentric trial. Post-menopausal patients (pts) with hormone receptor positive early breast cancer free of recurrence after 2-3 years of adjuvant tam, were randomized in a 1:1 ratio to receive 3-2 years (short arm, S) or 5 years (long arm, L) of letrozole. The primary study end point was disease-free survival (DFS). Results: Between August 2005 and May 2010, 2056 pts were randomly assigned to receive 3-2 years (n=1030) or 5 years (n=1026) of letrozole. Main patients characteristics in the S and L arms were, respectively: median age 60 vs 61 years, node negative 56 vs 56%, (neo)adjuvant chemotherapy 53.4 vs 54.1%. The median follow-up was 10 years (IQR range: 8.6-11.4). The 8-year DFS was 80% (95% CI:77.3-82.7) and 85% (95% CI:82.9-87.6) in the S and L arm, respectively (hazard ratio, HR 0.82; 95% CI:0.68-0.98; p=0.031). This effect did not change in a multivariate Cox model that included nodal status, grading and age. No evidence of interaction between random assignment and nodal status, age and grading was observed. Among 1960 pts evaluable for toxicity, osteoporosis was diagnosed in 47 (4.8%) in S arm and 81 (8.3%) pts in L arm (chi-square=9.88; p=0.002). Bone fractures occurred in 5 (0.5%) and 9 (0.9%) pts in S and L arm, respectively ( p=0.29, Fisher exact test). Conclusions: After 2-3 years of adjuvant tam, extended treatment with 5 years of letrozole resulted in significant improvement in DFS compared to the standard duration of 2-3 years of letrozole. Clinical trial information: NCT01064635.

Short, Full-Dose Adjuvant Chemotherapy in High-Risk Adult Soft Tissue Sarcomas: A Randomized Clinical Trial From the Italian Sarcoma Group and the Spanish Sarcoma Group

2012 ◽  
Vol 30 (8) ◽  
pp. 850-856 ◽  
Author(s):  
Alessandro Gronchi ◽  
Sergio Frustaci ◽  
Mario Mercuri ◽  
Javier Martin ◽  
Antonio Lopez-Pousa ◽  
...  
Keyword(s):  
Clinical Trial ◽  
High Risk ◽  
Adjuvant Chemotherapy ◽  
Soft Tissue ◽  
Randomized Clinical Trial ◽  
Cox Model ◽  
Phase Iii ◽  
Full Dose ◽  
Preoperative Ct ◽  
To Receive

PurposeA previous randomized clinical trial by the Italian Sarcoma Group (ISG) had shown a survival benefit of adjuvant chemotherapy (CT) in high-risk extremity soft tissue sarcoma (STS). However, the dose-intensity of the last two cycles was suboptimal. We then undertook a multicentric international phase III study to compare three and five cycles of the same CT.Patients and MethodsPatients were randomly assigned either to receive three cycles of preoperative CT with epirubicin 120 mg/m2and ifosfamide 9 g/m2and granulocyte colony-stimulating factor (arm A) or to receive the same three cycles of preoperative CT followed by two further cycles of postoperative CT (arm B). Noninferiority of the primary end point, overall survival (OS), was assessed by the CI of the hazard ratio (HR; arm A/arm B) obtained from the Cox model.ResultsBetween January 2002 and April 2007, 328 patients were recruited (164 patients in each arm). At a median follow-up of 63 months (interquartile range, 49 to 77 months), 100 deaths were recorded, 49 in arm A and 51 in arm B. Five-year OS probability was 0.70 for the entire group of patients (0.68 in arm A and 0.71 in arm B). The HR of arm A versus arm B was 1.00 (90% CI, 0.72 to 1.39).ConclusionIn this population of patients with high-risk localized STS, three cycles of full-dose preoperative CT were not inferior to five cycles. The outcome compares favorably with the expected survival of patients with high-risk STS and was superimposable on the CT arm of the previous ISG trial.

Bortezomib(Velcade®)-Thalidomide-Dexamethasone (VTD) Is Superior to Thalidomide-Dexamethasone (TD) In Patients with Multiple Myeloma (MM) Progressing or Relapsing After Autologous Transplantation

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 3043-3043
Author(s):  
Laurent Garderet ◽  
Simona Iacobelli ◽  
Philippe Moreau ◽  
Mamoun Dib ◽  
Denis Caillot ◽  
...  
Keyword(s):  
Cumulative Incidence ◽  
Cox Model ◽  
Autologous Transplantation ◽  
Rest Period ◽  
Phase Iii ◽  
Rank Test ◽  
Primary Study ◽  
Log Rank Test ◽  
One Year ◽  
To Receive

Abstract Abstract 3043 Introduction: The Thalidomide-Dexamethasone (TD) regimen has provided encouraging results in relapsed MM. To improve results, bortezomib (Velcade) has been added to the combination in previous phase II studies, the so called VTD regimen. In January 2006, the European Group for Blood and Marrow Transplantation (EBMT) and the Intergroupe Francophone du Myélome (IFM) initiated a prospective, randomized, parallel-group, open-label phase III, multicenter study, comparing VTD (arm A) with TD (arm B) for MM patients progressing or relapsing after autologous transplantation. Patients and Methods: Inclusion criteria: patients in first progression or relapse after at least one autologous transplantation, including those who had received bortezomib or thalidomide before transplant. Exclusion criteria: subjects with neuropathy above grade 1 or non secretory MM. Primary study end point was time to progression (TTP). Secondary end points included safety, response rate, progression-free survival (PFS) and overall survival (OS). Treatment was scheduled as follows: bortezomib 1.3 mg/m2 was given as an i.v bolus on Days 1, 4, 8 and 11 followed by a 10-Day rest period (days 12 to 21) for 8 cycles (6 months) and then on Days 1, 8, 15, 22 followed by a 20-Day rest period (days 23 to 42) for 4 cycles (6 months). In both arms, thalidomide was scheduled at 200 mg/Day orally for one year and dexamethasone 40 mg/Day orally four days every three weeks for one year. Patients reaching remission could proceed to a new stem cell harvest. However, transplantation, either autologous or allogeneic, could only be performed in patients who completed the planned one year treatment period. Response was assessed by EBMT criteria, with additional category of near complete remission (nCR). Adverse events were graded by the NCI-CTCAE, Version 3.0.The trial was based on a group sequential design, with 4 planned interim analyses and one final analysis that allowed stopping for efficacy as well as futility. The overall alpha and power were set equal to 0.025 and 0.90 respectively. The test for decision making was based on the comparison in terms of the ratio of the cause-specific hazards of relapse/progression, estimated in a Cox model stratified on the number of previous autologous transplantations. Relapse/progression cumulative incidence was estimated using the proper nonparametric estimator, the comparison was done by the Gray test. PFS and OS probabilities were estimated by the Kaplan-Meier curves, the comparison was performed by the Log-Rank test. An interim safety analysis was performed when the first hundred patients had been included. The safety committee recommended to continue the trial. Results: As of 1st July 2010, 269 patients had been enrolled in the study, 139 in France (IFM 2005-04 study), 21 in Italy, 38 in Germany, 19 in Switzerland (a SAKK study), 23 in Belgium, 8 in Austria, 8 in the Czech republic, 11 in Hungary, 1 in the UK and 1 in Israel. One hundred and sixty nine patients were males and 100 females; the median age was 61 yrs (range 29–76). One hundred and thirty six patients were randomized to receive VTD and 133 to receive TD. The current analysis is based on 246 patients (124 in arm A, 122 in arm B) included in the second interim analysis, carried out when 134 events were observed. Following this analysis, the trial was stopped because of significant superiority of VTD over TD. The remaining patients were too premature to contribute to the analysis. The number of previous autologous transplants was one in 63 vs 60 and two or more in 61 vs 62 patients in arm A vs B respectively. The median follow-up was 25 months. The median TTP was 20 months vs 15 months respectively in arm A and B, with cumulative incidence of relapse/progression at 2 years equal to 52% (95% CI: 42%-64%) vs 70% (95% CI: 61%-81%) (p=0.0004, Gray test). The same superiority of arm A was also observed when stratifying on the number of previous autologous transplantations. At 2 years, PFS was 39% (95% CI: 30%-51%) vs 23% (95% CI: 16%-34%) (A vs B, p=0.0006, Log-Rank test). OS in the first two years was comparable in the two groups. Conclusion: VTD resulted in significantly longer TTP and PFS in patients relapsing after ASCT. Analysis of response and safety data are on going and results will be presented at the meeting. Protocol EU-DRACT number: 2005-001628-35. Disclosures: Niederwieser: Bristol-Myers Squibb: Speakers Bureau; Novartis: Speakers Bureau.

A randomized phase II study evaluating the activity of bevacizumab in combination with carboplatin plus paclitaxel in patients with previously untreated advanced mucosal melanoma (NCT02023710).

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 9521-9521
Author(s):  
Xieqiao Yan ◽  
Xinan Sheng ◽  
Lu Si ◽  
Zhihong Chi ◽  
Chuanliang Cui ◽  
...  
Keyword(s):  
Disease Control ◽  
Phase Ii ◽  
Cox Model ◽  
Mucosal Melanoma ◽  
Phase Iii ◽  
Study Endpoint ◽  
Primary Study ◽  
Open Label ◽  
Randomized Phase Ii ◽  
To Receive

9521 Background: Mucosal melanoma is rare and associated with extremely poor prognosis. There was no standard treatment for advanced mucosal melanoma patients. BEAM study had demonstrated the effectivity and safety of bevacizumab combined with carboplatin plus paclitaxel in patients with previously untreated metastatic melanoma. This study was to evaluate the activity of bevacizumab combined with carboplatin plus paclitaxel in Patients with Previously Untreated Advanced Mucosal Melanoma. Methods: This study is an open-label, multicenter, randomized phase II trial. Eligible patients had metastatic, recurrent, or unresectable mucosal melanoma and no received any systemic therapy before enrollment. Patients were randomly allocated in a 2:1 ratio to receive bevacizumab (CPB arm, 5mg/kg every two weeks) or placebo (CP arm) with carboplatin (area under the curve, 5) plus paclitaxel (175 mg/m2). Treatment was continued for both groups until disease progression, unacceptable toxicity, death, or withdrawal of consent. The primary study endpoint is progress-free survival (PFS). Overall survival, disease control rate, and safety will also be assessed. Results: The first patient visit was December 1st, 2013, and the final data cutoff was August 30th, 2018. At that time, 114 patients were randomly assigned to receive CP or CPB therapy. Median PFS was 3.2 months for the CP arm and 4.7 months for the CPB arm (HR, 0.50; 95% CI, 0.33-0.72; P = 0.001). Median OS was 9.0 months in the CP arm versus 12.9 months in the CPB arm (HR, 0.61; 95% CI, 0.40-0.92; P = 0.02). The PFS was longer in the CPB arm in the subgroups of patients with neutrophil-to-lymphocyte ratio (NLR) more than 4 and patients with abnormal lactate dehydrogenase concentration (1.2 v 3.0 months, HR, 0.38; 2.0 v 4.7 months, HR, 0.39, respectively). Multivariate analysis using the Cox model showed that combination with bevacizumab was the predictor for better disease control and survival (PFS: HR 0.400, 95% CI 0.251-0.636, P < 0.001; OS: HR 0.505, 95% CI 0.313-0.814, P = 0.005). No new safety signals were observed. Conclusions: To our knowledge this is the largest study about advanced mucosal melanoma. This study demonstrated that bevacizumab in combination with carboplatin plus paclitaxel is active and safe regimen as first line treatment in patients with in advanced mucosal melanoma. A phase III study will be necessary to confirm the benefit, especially in some special setting such as elevated NLR and elevated LDH subgroups. Clinical trial information: NCT02023710.

scholarly journals The Role of Para-Aortic Lymphadenectomy in the Surgical Staging of Women with Intermediate and High-Risk Endometrial Adenocarcinomas

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Taymaa May ◽  
Melina Shoni ◽  
Allison F. Vitonis ◽  
Charles M. Quick ◽  
Whitfield B. Growdon ◽  
...  
Keyword(s):  
High Risk ◽  
Adjuvant Therapy ◽  
Endometrial Adenocarcinoma ◽  
Disease Free Survival ◽  
Disease Recurrence ◽  
Pelvic Lymphadenectomy ◽  
Surgical Staging ◽  
Adjuvant Radiation ◽  
Effective Treatment Option ◽  
To Receive

Objectives. To characterize clinical outcomes in patients with intermediate or high-risk endometrial carcinoma who underwent surgical staging with or without para-aortic lymphadenectomy.Methods. This is a retrospective cohort study of patients with intermediate or high-risk endometrial adenocarcinoma who underwent surgical staging with (PPALN group) or without (PLN) para-aortic lymphadenectomy. Data were collected, Kaplan-Meier curves were generated, and univariate and multivariate analyses performed to compare differences in adjuvant therapy, disease recurrence, disease-free survival (DFS), and overall survival (OS).Results.118 patients were included in the PPALN group and 139 in the PLN group. Patients in the PPALN group were more likely to receive adjuvant vaginal brachytherapy (25.4% versus 11.5%,OR=2.5,P=0.03) and less likely to receive adjuvant multimodal combination therapy (17.81% versus 28.8%,OR=0.28,P=0.002). DFS was improved in the PLN group as compared to PPALN (80% versus 62%,P=0.02). OS was equivalent (P=0.93). Patients in the PPALN group who had less than 10 para-aortic nodes removed were twice as likely to recur than patients who had 10 or more para-aortic nodes or patients in the PLN group (HR 2.08, CI 1.20–3.60,P=0.009).Conclusions. Patients in the PLN group were more likely to receive multimodal adjuvant therapy and had better DFS than the PPALN group. Pelvic lymphadenectomy followed by adjuvant radiation and chemotherapy may represent an effective treatment option for patients with intermediate or high-risk disease. If systematic para-aortic lymphadenectomy is performed and less than 10 para-aortic lymph nodes are obtained, multimodality adjuvant therapy should be considered to improve DFS.

scholarly journals Anthracyclines in Early Breast Cancer: The ABC Trials—USOR 06-090, NSABP B-46-I/USOR 07132, and NSABP B-49 (NRG Oncology)

2017 ◽  
Vol 35 (23) ◽  
pp. 2647-2655 ◽  
Author(s):  
Joanne L. Blum ◽  
Patrick J. Flynn ◽  
Greg Yothers ◽  
Lina Asmar ◽  
Charles E. Geyer ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Early Breast Cancer ◽  
Cox Model ◽  
Growth Factor Receptor ◽  
Disease Free Survival ◽  
Invasive Disease ◽  
Efficacy Analysis ◽  
Oncology Research ◽  
Stratified Cox Model ◽  
To Receive

Purpose Docetaxel and cyclophosphamide (TC) was superior to doxorubicin and cyclophosphamide (AC) in a trial in early breast cancer. However, activity of TC relative to AC regimens with a taxane (TaxAC) is unknown. Methods In a series of three adjuvant trials, women were randomly assigned to TC for six cycles (TC6) or to a standard TaxAC regimen. US Oncology Research (USOR) 06-090 compared TC6 with docetaxel, doxorubicin, and cyclophosphamide (TAC6). National Surgical Adjuvant Breast and Bowel Project (NSABP) B-46-I/USOR 07132 compared TC6, TAC6, or TC6 plus bevacizumab. NSABP B-49 compared TC6 with several standard AC and taxane combination regimens. Before any analysis of individual trials, a joint efficacy analysis of TC versus the TaxAC regimens was planned, with invasive disease-free survival (IDFS) as the primary end point. Patients who received TC6 plus bevacizumab on NSABP B-46-I/USOR 07132 were not included. A hazard ratio (HR) from a stratified Cox model that exceeded 1.18 for TC6 versus TaxAC was predefined as inferiority for TC6. The prespecified interim monitoring plan was to report for futility if the HR was > 1.18 when 334 IDFS events were observed (50% of 668 events required for definitive analysis). Results A total of 2,125 patients were randomly assigned to receive TC6 regimens and 2,117 patients were randomly assigned to receive TaxAC regimens. The median follow-up time was 3.3 years. There were 334 IDFS events, and the HR for TC6 versus TaxAC was 1.202 (95% CI, 0.97 to 1.49), which triggered early reporting for futility. The 4-year IDFS was 88.2% for TC6 and was 90.7% for TaxAC ( P = .04). Tests for treatment interaction by protocol, hormone receptor status, and nodal status were negative. Conclusion The TaxAC regimens improved IDFS in patients with high-risk human epidermal growth factor receptor 2–negative breast cancer compared with the TC6 regimen.

BIG 1–98: A randomized double-blind phase III study comparing letrozole and tamoxifen given in sequence vs. alone as adjuvant endocrine therapy for postmenopausal women with receptor-positive breast cancer

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. LBA528-LBA528
Author(s):  
H. T. Mouridsen ◽  
A. Keshaviah ◽  
L. Mauriac ◽  
J. Forbes ◽  
R. Paridaens ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Postmenopausal Women ◽  
Endocrine Therapy ◽  
Disease Free Survival ◽  
Adjuvant Endocrine Therapy ◽  
Phase Iii ◽  
Study Entry ◽  
Second Primary ◽  
Efficacy Analysis ◽  
Disease Free

LBA528 Background: The Primary Core Analysis (PCA) of BIG 1–98 comparing letrozole (L) to tamoxifen (T) as initial adjuvant endocrine therapy showed that L significantly prolonged disease-free survival (DFS), particularly reducing the risk of relapse in distant sites, compared with T for postmenopausal women with endocrine-responsive breast cancer (BC). The aim of the Second Primary Analysis (SPA) is to compare L and T given in sequence vs. alone. On Mar 15, ‘06, the Data Safety Monitoring Committee (DSMC) will review the results of the 2nd interim analysis of the SPA. We will present safety and efficacy data from this analysis if the DSMC recommends release of the results. Methods: 8028 women were randomized upfront to Tx5 years (yrs) (A), Lx5 (B), Tx2→Lx3 (C), or Lx2→Tx3 (D); 1835 to the 2-arm option of the study (arm A vs. B; Mar ’98 - Mar ‘00) and 6193 to the 4-arm option (arm A vs. B vs. C vs. D; Apr ’99 - May ‘03). The primary endpoint was DFS (time from randomization to first occurrence of invasive BC recurrence, invasive contralateral BC, second non-breast malignancy, or death from any cause). The SPA is comprised of two pair-wise comparisons: arm A vs. C and B vs. D. Only 4-arm patients (pts) alive and disease-free at 2 yrs after study entry (corresponding to the treatment switch for arms C and D) are included. These analyses will determine if the risk of an event beyond 2 yrs is reduced by switching agents. Additional exploratory analyses based on all events and follow-up (FU) for 4-arm pts will be conducted, including the comparison of arm B vs. C. The final SPA is planned for Feb ‘08, after 662 events. In Jan ‘05, the 1st interim efficacy analysis was presented to the DSMC, after 162 events among 3641 pts (excluding those who had an event within 2 yrs or did not yet have at least 2 yrs of FU). The median SPA FU (from 2 yrs after study entry) was 11.1 months. The 2nd interim efficacy analysis will be presented to the DSMC on Mar 15, ‘06 based on data received as of a Dec 21, ‘05. Results: Conclusions: No significant financial relationships to disclose.

Adjuvant therapy with zoledronic acid (AZURE-BIG 01/04): The influence of menopausal status and age on treatment effects.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 502-502 ◽  
Author(s):  
Helen Marshall ◽  
Walter Gregory ◽  
Richard Bell ◽  
David A. Cameron ◽  
David John Dodwell ◽  
...  
Keyword(s):  
Zoledronic Acid ◽  
Adjuvant Therapy ◽  
Cox Model ◽  
Menopausal Status ◽  
Disease Free Survival ◽  
Invasive Disease ◽  
Significant Heterogeneity ◽  
Total Study Population ◽  
Subgroup Analyses ◽  
Negative Effect

502 Background: The AZURE trial evaluated the use of zoledronic acid (ZOL) in addition to standard adjuvant therapy in patients with stage II/III breast cancer. Although analysis of the primary endpoint in the total study population showed no significant effects on disease outcomes, pre-specified subgroup analyses identified significant benefit in both invasive disease-free survival (IDFS) and overall survival (OS) in women >5years postmenopause (Coleman et al. NESM. 2011;365:1396–1405). Here we evaluate the treatment modifying effects of both menopausal status and age. Methods: 3360 patients were randomized to receive standard (neo) adjuvant systemic therapy +/- ZOL 4mg iv every 3-4 weeks for 6 doses, then at reduced frequency to complete 5 years treatment. Results: ZOL had no overall effect on IDFS or OS at a median follow-up of 59 months. Pre-specified subgroup analyses showed significant heterogeneity of treatment effect (chi21 =7.91; p=.0049) on IDFS between those who were >5 years post-menopause (n=1041; adjusted HR= 0.75; 95% CI 0.59-0.96, p=0.02) and all other (pre, peri and unknown status) menopausal groups (n=2318; adjusted HR= 1.15; 95% CI 0.97-1.36, p=0.11). The treatment interaction between the two menopausal groups was related to differences in first extra-skeletal IDFS events (chi21 = 14.00, p=0.0002), rather than first recurrence in bone (chi21 = 0.14, p=0.70). In women aged <40, a significant worsening in extra-skeletal IDFS events was seen (HR = 1.68; 95% CI = 1.14-2.47, p=.008). Although the ZOL effect on IDFS improved by age from a negative effect in younger patients (<40) to a beneficial effect for those aged 54 and over (chi21(trend) = 5.96, p=0.015, using Cox model analysis to test for an interaction effect between age, menopausal status and treatment for IDFS (using age 55 as a cut-off) showed that the age effect is reversed by menopausal status, with this model providing a significantly better fit (chi22 = 22.8, p=.00001) than the aforementioned linear model. Conclusions: These results suggest menopausal status is more informative than age in the selection of patients for treatment with ZOL. In women aged <40, ZOL may increase extra-skeletal recurrence.

10-yr follow-up results of NSABP B-32, a randomized phase III clinical trial to compare sentinel node resection (SNR) to conventional axillary dissection (AD) in clinically node-negative breast cancer patients.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 1000-1000 ◽  
Author(s):  
Thomas B. Julian ◽  
Stewart J. Anderson ◽  
David N. Krag ◽  
Seth P. Harlow ◽  
Joseph P. Costantino ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Clinical Trial ◽  
Disease Free Survival ◽  
Outcome Data ◽  
Phase Iii ◽  
Absolute Difference ◽  
Breast Cancer Patients ◽  
Significant Difference ◽  
M Estimates

1000 Background: NSABP B-32, the largest surgical prospective randomized phase III trial was designed to compare overall survival (OS), disease-free survival (DFS), and morbidity between SNR alone vs SNR + AD in SN negative (-) pts. We present 10 yr outcome data for primary endpoints as well as updated data on the effect of occult metastases, found later in the SN by central, detailed pathologic analysis. Methods: 5,611 women with operable, clinically N0, invasive breast cancer were randomized to SNR + AD (Group [Grp] 1) or to SNR alone with AD only if SNs were positive (Grp2). 3,989 (71.1%) of 5,611 pts were SN-. 3,986 (99.9%) of these SN- pts had follow-up information: Grp 1: 1,975, Grp 2:2,011. Median time on study was 9.4 yrs. Cox proportional hazard models adjusting for study stratification variables were used to compare OS and DFS between the two groups. Two-sided p values were used. HR values > 1 indicate a more favorable outcome in Grp 1 Results: At 10 yrs, there continues to be no significant difference in OS between the two groups (HR: 1.11, p = 0.27). 10 yr Kaplan-Meier (K-M) estimates for OS are 87.8% for SNR alone and 88.9% for SNR + AD. There continues to be no significant difference in DFS between the two groups (HR: 1.01, p=0.92). 10-yr K-M estimates for DFS were 76.9% for both groups. Occult nodal disease was originally detected in 3,884 pts (15.8%) with SN- on initial H and E analysis. Comparisons between the groups with and without occult disease yielded an adjusted HR for OS: 1.25 (p = 0.08) with an absolute difference at 10 yrs of 2.8% and a HR for DFS: 1.24 (p = 0.018) with an absolute difference of 4.1%. The cumulative incidences of local-regional events were low (10-yr values: SNR 4.0%, SNR+AD, 4.3%) and not significant (HR: 0.95, p = 0.77). Conclusions: At 10 yrs there continues to be no significant differences in OS and DFS between SNR and SNR + AD in pts with negative SN. The relative increase in risk of DFS and OS for pts with occult SN metastases remains stable. Support: PHS grants: NSABP: U10CA-12027, U10CA-37377, U10CA-69651, U10CA-69974; VT Ca Cntr: P30 CA22435; DNK: 5RO1CA074137 NCI Dpt HHS. Clinical trial information: NCT00003830.

Preoperative chemoradiotherapy and postoperative chemotherapy with capecitabine and oxaliplatin versus capecitabine alone in locally advanced rectal cancer: First results of the PETACC-6 randomized phase III trial.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 3531-3531 ◽  
Author(s):  
Hans-Joachim Schmoll ◽  
Karin Haustermans ◽  
Timothy Jay Price ◽  
Bernard Nordlinger ◽  
Ralf Hofheinz ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Anal Verge ◽  
Locally Advanced ◽  
Disease Free Survival ◽  
Treatment Compliance ◽  
Advanced Rectal Cancer ◽  
Locally Advanced Rectal Cancer ◽  
Phase Iii ◽  
R0 Resection ◽  
To Receive

3531 Background: The PETACC-6 trial investigates whether the addition of oxaliplatin to preoperative oral fluoropyrimidine-based chemoradiation (CRT) followed by postoperative adjuvant fluoropyrimidine-based chemotherapy (CT) improves disease-free survival (DFS) in locally advanced rectal cancer. We present results of the early secondary endpoints. Methods: Between 11/2008 and 09/2011, patients with rectal cancer within 12 cm from the anal verge, T3/4 and/or node-positive, with no evidence of metastatic disease and considered either resectable at the time of entry or expected to become resectable after preoperative CRT, were randomly assigned to receive 5 weeks of preoperative CRT (45 Gy in 25 fractions) with capecitabine (825 mg/m² twice daily), followed by 6 cycles of adjuvant CT with capecitabine (1000 mg/m2twice daily/days 1-15 every three weeks) (arm 1) or to receive the same regimen with the addition of oxaliplatin before (50 mg/m²/days 1, 8, 15, 22, 29) and after surgery (130 mg/m²/day 1, every three weeks) (arm 2). Additional RT before surgery (5.4 Gy/days 36-38) using the same fields or as a boost with capecitabine was an option. Primary endpoint is DFS. Results: 1094 patients were randomized (547 in each arm). 98% and 92% of patients, respectively, received at least 45 Gy of preoperative RT in arm 1 and arm 2. More than 90% of full dose concurrent CT was delivered in 91% and 63% of patients, respectively, in arm 1 and arm 2. Preoperative grade 3/4 toxicity occurred in 15.1% of patients in arm 1 vs. 36.7% in arm 2; 1 vs. 3 patients died before surgery. R0 resection rate was 92.0% in arm 1 and 86.3% in arm 2. The pCR rate (ypT0N0) was equal in both arms with 11.3% in arm 1 and 13.3% in arm 2 (p=0.31). The anal sphincter was preserved in 70% vs. 65% (p=0.09) in arm 1 and 2. Postoperative complications were not different between arms (38% vs. 41%; 5 vs. 4 patients died following surgery). Definitive numbers will be presented at the congress. Conclusions: The addition of oxaliplatin to preoperative fluoropyrimidine-based CRT led to decreased treatment compliance and increased toxicity, but did not improve surgical outcome. Clinical trial information: NCT00766155.

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