therapeutic window
The range of drug concentrations or genomic biomarker levels that provide clinical benefit without unacceptable toxicity.
Full Definition
The therapeutic window, also known as the therapeutic index, represents the range between the minimum effective dose or biomarker level and the maximum tolerated dose in cancer treatment. In the context of cancer genomics, this concept extends to molecular biomarkers where specific mutation frequencies, expression levels, or genomic scores must fall within defined ranges to predict treatment response. A narrow therapeutic window indicates that small changes in drug dosing or biomarker levels can significantly impact treatment outcomes, requiring careful monitoring and dose adjustments. Understanding therapeutic windows is crucial for precision oncology, as it helps clinicians optimize treatment protocols based on individual patient genomic profiles while minimizing adverse effects.
Usage
Usage note: Context determines whether referring to drug dosing or biomarker levels.
In Context
- "The narrow therapeutic window required frequent monitoring of drug levels and genomic markers." — Clinical protocol
- "Patients with mutations outside the therapeutic window showed poor response rates." — Clinical trial report