Genetic pattern key to colorectal cancer, research shows 

A genetic pattern could explain how colorectal cancer develops, new research suggests. 

Findings from ChristianaCare’s Helen F Graham Cancer Center & Research Institute identified a developmental genetic pattern that helps explain how colorectal cancer develops, why it becomes aggressive and how long patients are likely to survive. 

The study, published in Stem Cells Translational Medicine, shows that when normal cell signalling pathways fall out of balance, colon stem cells stop maturing and begin to overgrow. This disruption alters key developmental genes, known as HOX genes, driving cancer growth and resistance. 

The team identified an eight‑gene HOX signature that strongly predicts poor survival in colorectal cancer patients, making it a powerful marker of disease behaviour and a potential target for future therapies. 

“Cancer cells don’t just grow,” said Bruce Boman, Senior Researcher at ChristianaCare’s Cawley Center, who led the study. 

“They adapt by activating early developmental programmes. This flexibility helps them survive therapy.” 

Findings could help ‘improve long-term outcomes for patients’

Research shows the HOX gene network contains 39 transcription factors critical for animal embryonic development. The exact timing of HOX gene expression dictates proper embryo development and, according to findings, dysregulation of this precise timing is linked to colon cancer formation. 

HOX genes normally guide early cell development and are tightly controlled in healthy tissue. The researchers found that when WNT signalling becomes overactive and retinoic acid signalling is disrupted, HOX genes become misregulated in colon stem cells. 

Instead of maturing, these stem cells multiply, with overpopulation fuelling tumour growth and leading to more aggressive disease. 

“This explains why tumours that look similar can behave very differently in patients,” said Brian Osmond, Lead Author of the study.  

“The difference lies in which developmental programme the cancer is using.” 

Because HOX genes are closely tied to WNT and retinoic acid signalling, the researchers suggest that carefully designed combination therapies could help restore balance in cancer stem cells and limit resistance. 

“These cancers are using normal developmental tools in the wrong context,” Boman added.  

“If we can interrupt that process, we may be able to improve long‑term outcomes for patients.” 

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