Splicing Factor Mutations in Myeloid Malignancies.

Splicing factor mutations are among the most frequent genetic lesions in myelodysplastic syndromes (MDS) and other dysplastic myeloid neoplasms, establishing aberrant RNA splicing as a major pathway.

• Why it matters: Their mutation-specific effects and strong genotype-phenotype associations are known, but how they undergo positive clonal selection and how modifiers shape disease expression remains poorly understood.
• What they did: The work synthesizes findings since 2011 on recurrent somatic mutations in RNA splicing machinery, mapping mutation-specific splicing effects and linking them to clinical classification and prognostic models.
• The result: These insights have enabled incorporation of splicing factor mutations into contemporary disease classification and prognostic models, guiding efforts to translate biology into effective therapies.