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CCTG Connection



Published:
Category: Trials
Trial closure:  ICC.1

The ICC.1: NCI COVID-19 in Cancer Patients Study (N-CCaPS): A Longitudinal Natural History Study trial has permanently closed.

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Published:
Category: Group updates
Tissue Bank Holiday Season Shipment Notice and Central Office closure

CCTG Central Office 2025/2026 Holiday hours and closures 

  • December 24 – limited coverage 9am - 12pm EST
  • December 25 and 26 – office is closed
  • December 29 and 30 - limited coverage  9am – 5pm EST
  • December 31 - limited coverage  9am – 12pm EST
  • January 1st - office is closed  
  • January 2nd - limited coverage 9am – 5pm EST

Normal office hours resume on January 5th, 2026 at 8:30 am EST


Shipment of Specimens for Banking + Kit Supply

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Published:
Category: Group updates
The CCTG 2026 Annual Spring Meeting of Participants

CCTG is pleased to announce that the 2026 Annual Spring Meeting of Participants will be held April 24-26, 2026, at the Chelsea Hotel in Toronto.

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Published:
Category: Publications
Publication: Correlative CO.28
A new correlative study from CO.28 has been published: Detection of Molecular Residual Disease by Circulating Tumor DNA in Early-Stage Node-Negative Rectal Cancers (CCTG CO.28) Using a Tumor-Informed Assay
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Published:
Category: Publications
Poster Presentation at the Society for Neuro-Oncology Annual Meeting
Low and Intermediate Grade Glioma Umbrella Study of Molecular Guided TherapieS (LUMOS2) study
 
A CCTG poster presentation at the Society for Neuro-Oncology Annual Meeting, held November 19-23, 2025 in Honolulu. The abstract was then published in the journal Neuro-Oncology.
 
Patients with progressive IDH-mutant grade 2-3 glioma have limited therapeutic options.
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Published:
Category: Publications
Publication: Post Hoc Analysis CRC6
Predictive Role of Circulating Tumor DNA in Stage III Colon Cancer Treated With Celecoxib: A Post Hoc Analysis of the CALGB (Alliance)/SWOG 80702 Phase 3 Randomized Clinical Trial. This post hoc analysis used a clinically validated, tumor-informed assay to determine ctDNA status in 940 patients with stage III colon cancer and found that ctDNA negativity was highly associated with improved survival.
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Published:
Category: Trials
Trial closure: CEC1

The CEC1 (EORTC 26053-22054) Phase III Trial On Concurrent And Adjuvant Temozolomide Chemotherapy In Non-1p/19q Deleted Anaplastic Glioma. The CATNON Intergroup Trial has permanently closed.

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Published:
Category: Trials
CCTG Trials in Development – Q4 2025
This quarter's most recent list of pending trials with general time frames to expected activation. Read More