Table of Contents

Overview

Mutations in the DDX3X gene, which encodes an RNA helicase involved in various aspects of RNA metabolism, have significant implications in B-cell lymphomas, including BL, DLBCL, and other related malignancies and are particularly enriched within MYC-translocated tumors and those expressing the dark zone signature (DZsig).1 These mutations are predominantly loss-of-function (LOF) mutations, affecting the helicase domain of the protein. Missense mutations are predominantly found in male patients and rarely in females, hence showing a sex-specific pattern.2

Experimental Evidence

Driver mutations affecting this gene in DLBCL/BL have been experimentally demonstrated to cause a reduction or loss of function (LOF).2

Relevance tier by entity

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Mutation incidence in large patient cohorts (GAMBL reanalysis)

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Mutation pattern and selective pressure estimates

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aSHM regions

chr_name hg19_start hg19_end region regulatory_comment
chrX 42800580 42804184 intergenic NA

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Expression

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References

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Citing

If you use the information or data from this site, please cite

Krysta Coyle, Kostiantyn Dreval, Daniel Hodson and Ryan D. Morin. Audit of B-cell cancer genes. Blood Adv (2025) 9 (8): 2019–2031.

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