What question did this study set out to answer?

This research aims to understand the clinical and functional impact of different SF3B1 mutations in myelodysplastic neoplasms (MDS).

June 20, 2026Human GenomicsOpen Access

Variant-specific SF3B1 mutations drive distinct splicing and mitochondrial dysfunction in myelodysplastic neoplasms

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Randomized trial investigates SF3B1 mutations' impact on splicing and mitochondrial function in MDS, highlighting therapeutic targets.

This research aims to understand the clinical and functional impact of different SF3B1 mutations in myelodysplastic neoplasms (MDS).
Analyzed clinical data from 121 SF3B1-mutated MDS patients.
Conducted RNA sequencing on CD34⁺ patient bone marrow cells and CRISPR-engineered cell lines with specific SF3B1 variants.
Performed comprehensive analysis of splicing, gene expression, and mitochondrial bioenergetic parameters.
K666 variant was linked to shorter progression-free survival, distinct splicing abnormalities, and higher retained intron frequency compared to K700E.
Mitochondrial genes were frequently mis-spliced in K666-variant cells, with significant alterations in their expression levels.
Observed reduced complex IV activity and marked oxidative phosphorylation (OXPHOS) impairment in isogenic models, especially in K666N.

Hruštincová et al. (2026) studied this question.

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June 20, 2026Human GenomicsOpen Access

View Full Paper

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Authors

Randomized trial investigates SF3B1 mutations' impact on splicing and mitochondrial function in MDS, highlighting therapeutic targets.

This research aims to understand the clinical and functional impact of different SF3B1 mutations in myelodysplastic neoplasms (MDS).
Analyzed clinical data from 121 SF3B1-mutated MDS patients.
Conducted RNA sequencing on CD34⁺ patient bone marrow cells and CRISPR-engineered cell lines with specific SF3B1 variants.
Performed comprehensive analysis of splicing, gene expression, and mitochondrial bioenergetic parameters.
K666 variant was linked to shorter progression-free survival, distinct splicing abnormalities, and higher retained intron frequency compared to K700E.
Mitochondrial genes were frequently mis-spliced in K666-variant cells, with significant alterations in their expression levels.
Observed reduced complex IV activity and marked oxidative phosphorylation (OXPHOS) impairment in isogenic models, especially in K666N.

Hruštincová et al. (2026) studied this question.

View Full Paper

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