Phase 3 study for people with Colorectal Cancer

Recruiting Phase 3

Sources: ClinicalTrials.gov Checked: 11 October 2026 Not medical advice

This trial at a glance

Status Recruiting
Phase Phase 3
Sponsor Seagen, a wholly owned subsidiary of Pfizer
Registry number NCT05253651
Started 24 October 2022 Today 16 October 2026 Estimated completion 31 December 2027

Where this trial is running

Trial sites and the status recorded for each
SiteCityState or countryStatus at this site
Chris O'Brien Lifehouse Camperdown NSW Not yet recruiting
Princess Alexandra Hospital Woolloongabba QLD Recruiting
St Vincent's Hospital Fitzroy VIC Recruiting

voxsanity.com.au · trial sites from public registries · registry record synced 11 October 2026 · not medical advice

Who can join

Age 18 Years and over
Sex Anyone, regardless of sex
Healthy volunteers Not accepted
Enrolment target 400

The official eligibility criteria

Registry text, reproduced exactly. These are the words the trial's sponsor published on ClinicalTrials.gov. They have not been edited, shortened or rewritten, and they are written for researchers rather than for patients.

Inclusion Criteria:

* Histologically and/or cytologically confirmed adenocarcinoma of the colon or rectum which is locally advanced unresectable or metastatic

* Able to provide the most recently available formalin-fixed paraffin-embedded (FFPE) tumor tissue blocks (or freshly sectioned slides) obtained prior to treatment initiation to a central laboratory

* If archival tissue is not available, a newly-obtained baseline biopsy of an accessible tumor lesion is required within 35 days prior to start of study treatment

* HER2+ disease as determined by a tissue based assay performed at a central laboratory.

* Participant has rat sarcoma viral oncogene homolog wild-type (RAS WT) disease as determined by local or central testing. For central RAS analysis, tissue sample must be analyzed within 1 year of biopsy date.

* Radiographically measurable disease per RECIST v1.1 with:

* At least one site of disease that is measurable and that has not been previously irradiated, or

* If the participant has had previous radiation to the target lesion(s), there must be evidence of progression since the radiation

* Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1

* CNS Inclusion - based on contrast brain magnetic resonance imaging, participants may have any of the following:

* No evidence of brain metastases

* Previously treated brain metastases which are asymptomatic

Exclusion Criteria:

* Prior systemic anticancer therapy for colorectal cancer (CRC) in the locally advanced unresectable or metastatic setting; note that participants may have received a maximum of 2 doses of mFOLFOX6 in the locally advanced/unresectable or metastatic setting prior to randomization.

* Note: May have received chemotherapy for CRC in the adjuvant setting if it was completed \>6 months prior to enrollment

* Radiation therapy within 14 days prior to enrollment (or within 7 days in the setting of stereotactic radiosurgery)

* Previous treatment with anti-HER2 therapy

* Ongoing Grade 3 or higher neuropathy

* Active or untreated gastrointestinal (GI) perforation at the time of screening.

Dates on the record

Started 24 October 2022
Estimated completion 31 December 2027
Registry last updated 22 July 2026
Checked by Voxsanity 11 October 2026

Results, publications and the official record

Sources and dates

  • ClinicalTrials.gov – the record this page reformats
  • ClinicalTrials.gov processing date: 22 July 2026.
  • This page last checked by Voxsanity: 11 October 2026.

Voxsanity reformats data from public registries into this layout. It does not edit, interpret or add to what the registry published.

Not medical advice.

Individual trial records are refreshed on a rolling basis rather than all at once, so a record may be up to several weeks old. Each trial page and trial card shows the date its own record was last synced. Where a record has lagged, its status, sites and enrolment can differ from the current registry state in either direction, so check the registry link on the trial page before acting on them.

Letter for your doctor

A one-page summary of this trial to print or email to your GP. It carries the registry's own record of the trial and its eligibility criteria, and nothing Voxsanity has written about whether it suits you.