The prognostic impact of tryptophan on non-small cell lung cancer survival: insights from plasma essential amino acids.

Nutr J · 2026 · PMC13104387 · PMID 41840648

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a negative trendno p-value reported

did not reach statistical significanceno p-value reported

In early-stage NSCLC population, although a negative trend was observed, it did not reach statistical significance at any percentile.

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a decreasing trendno p-value reported

observed a positive association between a decreasing trend in IDO activity and the OS in stage III NSCLC patients, and an improving trend in OS among stage III NSCLC patients with a Kyn/Trp ratio of less than 0.09 [ 43 ].

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.