Kynurenine/Tryptophan Ratio as a Potential Blood-Based Biomarker in Non-Small Cell Lung Cancer.

However, in a selected population of stage II–III patients who did not undergo adjuvant therapies, the DFS analysis showed a clear trend, even though not statistically significant ( p = 0.313, HR 1.95, 95% CI 0.59–6.46), suggesting that the high Kyn/Trp ratio could correlate with a worse prognosis ( Table 5 and Figure 6 ). 3.

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