The edition · Oncology
Tarlatamab added to durvalumab maintenance lengthened survival in extensive-stage small-cell lung cancer
DeLLphi-305 reported median overall survival of 21.1 months against 12.7 with durvalumab alone. Also: perioperative durvalumab with enfortumab vedotin in cisplatin-ineligible bladder cancer, divarasib against first-generation KRAS G12C inhibitors, and magnesium with weekly cisplatin.
The edition in brief
Today's oncology edition closes on DeLLphi-305, an open-label phase 3 trial of 563 patients with extensive-stage small-cell lung cancer free of progression after chemoimmunotherapy. Adding tarlatamab to durvalumab maintenance gave median overall survival of 21.1 months against 12.7 months (hazard ratio 0.42, 95% CI 0.32 to 0.54) at interim analysis, with cytokine release syndrome, mostly grade 1–2, in nearly half. VOLGA randomised 695 cisplatin-ineligible patients with muscle-invasive bladder cancer: perioperative durvalumab with three cycles of neoadjuvant enfortumab vedotin raised 24-month event-free survival to 63.5% from 45.1% with cystectomy alone, and improved overall survival (hazard ratio 0.58). Krascendo 1 found divarasib extended progression-free survival to 9.8 months from 5.7 with sotorasib or adagrasib, and overall survival to 17.7 from 12.0 months. A 100-patient trial with weekly cisplatin and radiotherapy in head and neck cancer found intravenous magnesium lowered urinary markers of kidney injury. The pearl covers kidney and electrolyte checks on weekly cisplatin.
Cisplatin-ineligible bladder cancer: durvalumab with enfortumab vedotin around cystectomy improved survival
For cisplatin-ineligible muscle-invasive bladder cancer, perioperative durvalumab with neoadjuvant enfortumab vedotin is an option to discuss, with an overall survival benefit over cystectomy alone.
Divarasib beat sotorasib or adagrasib in previously treated KRAS G12C lung cancer
In previously treated KRAS G12C lung cancer, divarasib improved survival and tolerability over first-generation inhibitors; watch for approval before changing practice.
Magnesium with weekly cisplatin lowered urinary markers of kidney injury
Magnesium with weekly cisplatin reduced kidney injury biomarkers in this small trial; keep supplementing and monitoring, without expecting it to prevent all nephrotoxicity.
Weekly cisplatin: check creatinine, magnesium and hearing before each dose
Check renal function, magnesium and hearing before every weekly cisplatin dose, and keep other nephrotoxins away.
Extensive-stage small-cell lung cancer: tarlatamab plus durvalumab maintenance cut deaths by more than half
For extensive-stage small-cell lung cancer without progression after chemoimmunotherapy, tarlatamab plus durvalumab maintenance is an option to discuss, with a large survival gain at interim analysis.
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