Bacteria subtype linked to growth in up to 50% of colorectal cancers

  • In a new study, microbes normally found in the mouth were discovered in about one-half of examined colorectal tumors well as in stool samples of many people with colorectal cancer.
  • Researchers reported that the microbes traveled from the mouth to the colon, going through the stomach and remaining intact when exposed to stomach acid.
  • The scientists hope this discovery can lead to new treatment options for people with colorectal cancer.

Researchers have discovered a specific microbe typically found in the mouth in about one-half of cases of colorectal cancer.

In their new studyTrusted Source, published in the journal Nature, the researchers said they hope this discovery could lead to new treatments and early screening.

The scientists at the Fred Hutchinson Cancer Center in Seattle set out to discover how microbes typically found in the mouth could travel to the lower gut, withstanding stomach acids, and then grow within colorectal tumors.

The researchers examined 200 cases of colorectal cancer. They reported that about half of the cancers contained the microbe. They also found the microbe in many stool samples taken from people with the cancer.

The microbes drive cancer progression and can lead to poorer outcomes.

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