The edition · Oncology
After osimertinib fails, test for MET: a combination extended survival
In SAFFRON, osimertinib plus savolitinib beat platinum-pemetrexed on progression and overall survival in MET-driven resistance. Also today: immunotherapy added to short-course radiotherapy in rectal cancer, and an antibody–drug conjugate replacing chemotherapy in PD-L1-negative lung cancer.
The edition in brief
In the phase 3 SAFFRON trial, 338 patients with EGFR-mutated NSCLC progressing on osimertinib, with MET overexpression or amplification, were randomised to osimertinib plus savolitinib or platinum-pemetrexed; progression-free survival (HR 0.55) and overall survival (HR 0.68; 12-month 70% vs 53%) both improved, with similar severe adverse event rates and frequent peripheral oedema. In UNION, 231 Chinese patients with locally advanced rectal cancer received short-course radiotherapy followed by camrelizumab and CAPOX, or long-course chemoradiotherapy; at interim analysis 3-year event-free survival was 91.3% versus 77.4% (HR 0.33), though the comparator was not a modern total neoadjuvant regimen. In OptiTROP-Lung06, sacituzumab tirumotecan plus pembrolizumab roughly tripled median progression-free survival over chemotherapy plus pembrolizumab (15.0 vs 5.7 months; HR 0.49) in 455 patients with PD-L1-negative non-squamous NSCLC, with fewer severe adverse events; overall survival is immature.
Short-course radiotherapy then camrelizumab and CAPOX improved event-free survival in rectal cancer
Treat UNION as strong early evidence for immunotherapy in rectal cancer neoadjuvant treatment, not yet a reason to replace current total neoadjuvant regimens.
An antibody–drug conjugate in place of chemotherapy nearly tripled progression-free survival in PD-L1-negative NSCLC
Note TROP2 conjugate plus pembrolizumab as a promising chemotherapy replacement in PD-L1-negative NSCLC, pending survival data.
Fatigue on a checkpoint inhibitor: check cortisol and thyroid before blaming the cancer
In a patient on a checkpoint inhibitor with unexplained fatigue, check thyroid function and morning cortisol.
SAFFRON: osimertinib plus savolitinib extended survival in MET-driven resistance
Rebiopsy EGFR-mutated NSCLC at progression on osimertinib and test for MET, since MET-driven resistance now has a survival-proven targeted option.
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