Stretches of repeating DNA tied to cancer progression and survival

Short, unstable DNA stretches, composed of repeated code, may play a greater role in the development and progression of cancer than once thought. These sites are mutation-prone, a tendency that increases in cancer. Using the Cancer Genome Atlas, researchers employed a new technique to analyze sequences of all genes in nearly 6,000 tumors from 18 different kinds of cancer. Their findings give new insights into the basic biology of cancer and point to new ways to type and treat a variety of cancers.
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