Functional Classification of Monoallelic TP53 Mutations Refines Prognostic Stratification in Myelodysplastic Neoplasms.

Functional heterogeneity of monoallelic TP53 mutations significantly impacts prognosis, with high PS and VAF predicting outcomes similar to multi-hit mutations in MDS.

• Why it matters: Accurate risk stratification in myelodysplastic neoplasms is crucial for guiding treatment, but the prognostic significance of monoallelic TP53 mutations remains uncertain, limiting personalized care.
• What they did: Analyzing 4,505 MDS patients, researchers used a phenotype score to classify TP53 variants by functional impact, then assessed leukemia-free survival across different allelic states and variant characteristics.
• The result: High PS and VAF in TP53mono patients identify a subgroup with prognosis comparable to multi-hit cases, enabling more precise risk assessment and potential tailored therapeutic strategies.