OnCo
termsTerm

Platinum-sensitive / platinum-resistant

aka platinum-sensitive, platinum sensitive, platinum-resistant, platinum resistant, platinum-refractory, platinum-free interval, PFI, platinum-eligible, platinum-ineligible, platinum-pretreated, post-platinum, platinum doublet, platinum-based, platinum-based chemotherapy, platinum doublets, platinum-etoposide, carboplatin-paclitaxel

Whether a cancer that responded to platinum chemotherapy came back more than six months later (sensitive, so platinum can be used again) or sooner (resistant, so something else is needed). The dividing line shapes ovarian and small-cell lung cancer treatment.

In ovarian cancer, relapse ≥6 months after platinum is treated with another platinum doublet, often followed by PARP maintenance, and secondary cytoreduction may help; relapse within 6 months (resistant) or during treatment (refractory) has response rates under 15% to single agents and is where mirvetuximab (folate receptor alpha), and trials of new ADCs, are focused. Small-cell lung cancer uses a 90-day cut-off for platinum-etoposide rechallenge. 'Platinum-ineligible' (kidney function, hearing, neuropathy) defines a treatment pathway in bladder cancer. Platinum-resistance mechanisms include restored homologous recombination (BRCA reversion) and drug efflux.

Category
Treatment jargon

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