What happens to survival if TMAO levels are high in colitis-associated colorectal cancer?
Trimethylamine N-oxide (TMAO) is a gut microbial metabolite that has been linked to inflammation and cancer progression. In colitis-associated colorectal cancer (CAC), a type of colorectal cancer that arises from inflammatory bowel disease, high TMAO levels are associated with poorer survival outcomes. Research suggests that TMAO may promote cancer through inflammation, DNA damage, and immune disruption.
What the research says
A systematic review on gut microbial metabolites and CAC found that elevated plasma TMAO levels are closely associated with poor survival outcomes 6. High-risk individuals with high TMAO levels show significantly increased risks of all-cause mortality and recurrence 6. The review describes TMAO as a pathogenic metabolite that activates nuclear factor κB (NF-κB), stimulates pro-inflammatory cytokines, induces DNA damage, and disrupts immune homeostasis, all of which can contribute to cancer progression 6. While the review does not provide specific survival statistics, it clearly states that high TMAO is linked to worse prognosis in CAC 6. Other sources on colorectal cancer discuss factors like exercise, AI colonoscopy, and the CALLY index, but do not address TMAO 257. The review on gut microbiota and colorectal cancer mentions microbial metabolites in general but does not specifically discuss TMAO's effect on survival 3.
What to ask your doctor
- Should I have my TMAO levels checked if I have colitis-associated colorectal cancer?
- What can I do to lower TMAO levels, such as dietary changes?
- How does TMAO affect my specific treatment plan and prognosis?
- Are there any clinical trials targeting TMAO or gut metabolites for colorectal cancer?
- What other gut-related markers should I be aware of for my condition?
This question is drawn from common patient questions about this topic and answered using cited medical research. We do not provide individualized advice.