Last Updated on July 4, 2026 by Staff
Scientists have found a breakthrough in understanding how a common genetic mutation in brain cancer helps tumors grow and spread. The University of Texas MD Anderson Cancer Center researchers have discovered that mutations in the ATRX gene completely change the DNA structure inside cancer cells. This change allows tumors to activate programs that help them grow fast.
The findings, published in Nucleic Acids Research, could lead to treatments for patients with ATRX-mutant gliomas, which is a very hard type of brain cancer to treat. Researchers also found a treatment that slowed tumor growth and helped patients live longer in preclinical studies by targeting genes activated after ATRX loss. The ATRX gene is important for organizing DNA inside cells. It helps keep the structure of chromosomes, supports DNA repair and makes sure genes are turned on and off at the right time.
When the ATRX gene works normally it prevents cells from getting genetic changes.. When the ATRX gene is mutated these protective mechanisms are removed. As a result damaged cells keep dividing, which increases the risk of cancer. ATRX mutations are often found in gliomas, which’s a group of brain tumors that come from supportive cells in the brain.
ATRX Gene Explained
The ATRX gene plays a role in keeping the DNA structure normal inside cells. It helps maintain the chromosomes, supports DNA repair and makes sure genes are turned on and off at the time. The ATRX gene is like a protector that prevents cells from getting genetic changes.
DNA Structure Changes
of just damaging DNA researchers found that ATRX mutations completely change how DNA is folded inside the cell nucleus. DNA is packaged into a structure called chromatin. This packaging controls which genes are active and which are silent. Without the ATRX gene chromatin becomes reorganized, creating interactions between different parts of DNA.
These changes activate programs that normally only work during early brain development. The ATRX gene mutations do not just damage DNA, they change the genetic control system of cancer cells. Researchers found important genes that become active including WNT5A, SLITRK6 and the HOXA gene family. These genes help cancer cells move easily invade surrounding brain tissue and keep multiplying
New Treatment Target
After finding the activated programs researchers looked into whether blocking them could slow tumor growth. They found that shutting down WNT5A and SLITRK6 reduced the movement of cancer cells, limiting their ability to spread. The HOXA genes were also found to be a target.
Researchers used a peptide called HXR9 to interfere with HOXA signaling. The treatment successfully killed cancer cells, slowed tumor progression and extended survival in animal models. The ATRX gene mutations and the HOXA genes are a treatment target for ATRX-mutant gliomas.
Beyond Brain Cancer
The discovery of the ATRX gene mutations is important not for brain cancer but also for other types of cancer. ATRX mutations also occur in cancer types. Since the mutation changes chromatin and activates programs the same treatment strategies may help patients with different forms of ATRX-mutant cancers.
Future Outlook
Current treatment options for gliomas are limited and survival rates are still poor. The new findings provide hope by identifying markers and promising targets that may improve future treatment strategies. Researchers plan to continue studying the HOXA pathway and other genes activated after ATRX loss to see if these discoveries can be used in trials.
If successful doctors may use a patient’s ATRX mutation status to guide treatment decisions. They can select therapies that target the altered gene networks driving each tumor. By combining information with a deeper understanding of chromatin structure and epigenetic regulation scientists believe the next generation of personalized medicine could offer more effective and precise treatments for brain cancer patients.
The study represents a step toward developing targeted treatments that can slow tumor progression and improve survival for patients with ATRX-mutant gliomas. The ATRX gene mutations and the HOXA genes are a hope for patients with brain cancer. The researchers are working hard to find treatments for ATRX-mutant gliomas. The ATRX gene is a key to understanding how brain cancer grows and spreads.