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Preoperative immunotherapy with atezolizumab (Tecentriq®) and tiragolumab in patients with colorectal liver metastases (CRLM) (the PURPLE trial)

Status
Suspended
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2022-503044-40-00
Acronym
PURPLE
Enrollment
18
Registered
2024-08-15
Start date
2024-12-16
Completion date
Unknown
Last updated
2025-08-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Colorectal liver metastases (CRLM)

Brief summary

Percentage of resected patients with complete or major pathological regression

Detailed description

Percentage of patients who underwent surgery after preoperative IO therapy, Incidence, relatedness and severity of adverse events occurring during preoperative short time immunotherapy within 90 days of surgery (Severity for all events will be graded according to NCI CTCAE v5.0), Assessment of postoperative complication rates according to the Clavien-Dindo Classification, Mortality within 90 days of surgery, Estimation of curative (R0) resection rate, Assessment of PET response (PET-CT or PET-MRI) after short term immunotherapy, Patients, who do not undergo surgery: Reasons for not having surgery, Percentage of resected patients with complete or major pathological regression as evaluated by independent central review

Interventions

Sponsors

Universitaetsklinikum Essen AöR
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Percentage of resected patients with complete or major pathological regression

Secondary

MeasureTime frame
Percentage of patients who underwent surgery after preoperative IO therapy, Incidence, relatedness and severity of adverse events occurring during preoperative short time immunotherapy within 90 days of surgery (Severity for all events will be graded according to NCI CTCAE v5.0), Assessment of postoperative complication rates according to the Clavien-Dindo Classification, Mortality within 90 days of surgery, Estimation of curative (R0) resection rate, Assessment of PET response (PET-CT or PET-MRI) after short term immunotherapy, Patients, who do not undergo surgery: Reasons for not having surgery, Percentage of resected patients with complete or major pathological regression as evaluated by independent central review

Countries

Germany

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026