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CCTG Connection



Published:
Category: Publications
Publication: MAC4/MAC5 secondary analysis
MAC4 /MAC5 - Assessment of adjuvant endocrine therapy with ovarian function suppression by Breast Cancer Index
 
In this prognostic study of 1782 patients from a clinical trial, patients with tumors in which the expression of HOXB13 relative to IL17BR was low (BCI [H/I]–low) derived an absolute benefit of 6.6% in 12-year breast cancer–free interval from exemestane plus OFS vs tamoxifen plus OFS and those with BCI (H/I)–high tumors had a 6.3% absolute benefit, but with variable relative tre
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Published:
Category: Trials
Trial closure: MA34

MA34 (BIG 4-11): A Randomized Multicenter, Double-Blind, Placebo-Controlled Comparison of Chemotherapy Plus Trastuzumab Plus Placebo versus Chemotherapy Plus Trastuzumab Plus Pertuzumab as AdjuvantTherapy in Patients with Operable HER2-Positive Primary Breast Cancer trial has permanently closed.

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Published:
Category: News
Congratulations to Florencia Comelles and Claire Norman

For over seven years the Dr. Frances Shepherd Award has supported investigators or post-graduate trainees who's CCTG research project demonstrates excellence in clinical trials and translational research. This Award provides travel support to present CCTG work at major international and national meetings. The CCTG Scientific Leadership selection task force have recently announced two new Award recipients, congratulations to Florencia Comelles and Claire Norman who will be formally presented their award at the CCTG Spring Meeting 2026.

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Published:
Category: Publications
Publication: Secondary analysis IND223, IND232 and IND234
Secondary analysis publication using data from IND223, IND232 and IND234.
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Published:
Category: Publications
Publication: Pooled Analysis BR34, CO26, IND226 and PA7

Effects of serotonergic drugs on immune checkpoint inhibitor response: a pooled analysis of individual patient data from four Canadian Cancer Trials Group (CCTG) trials BR34, CO26, I226 and PA7

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Published:
Category: Publications
Publication: PR19 analysis of initial arms

A randomized Phase II trial of High Dose-Rate (HDR) and Low Dose-Rate (LDR) brachytherapy as monotherapy in localized prostate cancer: analysis of initial arms of Canadian cancer trials group PR19

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Published:
Category: Publications
Publication: BLC4 secondary analysis
CCTG BLC4 (SWOG S1605) Urine Tumor DNA to Stratify the Risk of Recurrence
 
This study demonstrates that urine tumor DNA profiling can be used to stratify the risk of recurrence in patients after treatment with atezolizumab for bacillus Calmette-Guérin–unresponsive non–muscle-invasi
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Published:
Category: Publications
Publication: CO7 meta analysis
CO7 - systemic chemotherapy for patients with resectable or resected colorectal cancer liver metastases: An individual patient data meta-analysis of individual patient data from randomised phase III trials comparing surgery plus systemic chemotherapy with surgery alone in patients with CRCLM. Analyses were performed in the overall intention-to-treat (ITT) population, in patients who had curative-intent surgery (resected population), and in those who received post-operative chemotherapy only.
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