SMARCB1, also known as INI1, is a gene that encodes a protein involved in the SWI/SNF chromatin remodeling complex, which plays a crucial role in regulating gene expression and maintaining genomic stability.
In many cancers, particularly malignant rhabdoid tumors (MRTs), SMARCB1 is often found to be deleted or mutated, leading to a complete loss of protein expression. This loss is a hallmark of MRTs and is associated with their aggressive nature.
SMARCB1 functions as a tumor suppressor. Its loss can lead to dysregulation of genes involved in cell cycle control, apoptosis, and differentiation, contributing to uncontrolled cell growth and tumor progression.
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