Methylated Genes in Aggressive Mantle Cell Lymphoma
Author Information
Author(s): Enjuanes Anna, Fernàndez Verònica, Hernández Luis, Navarro Alba, Beà Sílvia, Pinyol Magda, López-Guillermo Armando, Rosenwald Andreas, Ott German, Campo Elías, Jares Pedro
Primary Institution: Hospital Clínic, University of Barcelona
Hypothesis
The study aims to identify epigenetically silenced genes in mantle cell lymphoma (MCL) that may have clinical relevance.
Conclusion
The study identified a set of genes whose methylation correlates with aggressive features of mantle cell lymphoma, suggesting a potential CpG island methylator phenotype.
Supporting Evidence
- 80% of the analyzed genes were methylated in MCL cell lines but not in normal lymphocytes.
- Methylation of SOX9 and HOXA9 correlated with higher proliferation rates in tumors.
- MCL with methylated genes showed a significantly shorter overall survival compared to unmethylated cases.
Takeaway
Researchers found that certain genes are turned off in aggressive types of lymphoma, which could help doctors understand how to treat it better.
Methodology
The study used epigenetic drugs and gene expression microarray profiling to identify methylated genes in MCL cell lines and validated findings in primary MCL samples.
Limitations
The study's findings need to be confirmed in larger series of independent cases.
Participant Demographics
Patients with mantle cell lymphoma from the Tumour Bank of the Department of Pathology of the Hospital Clínic of Barcelona.
Statistical Information
P-Value
p=0.0019 for SOX9, p=0.0023 for HOXA9, p=0.0376 for AHR
Confidence Interval
95% CI for overall survival ranged from 49.7 to 99.2 months for SOX9 methylation.
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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