A woman who's incredibly prone to tumors carries an unusual genetic mutation.
A woman developed 12 tumors — seven benign and five cancerous — before her 40th birthday. Medical researchers recently discovered why she's so prone to the abnormal growths: She carries a set of genetic mutations never seen before in humans.
When one cell splits into two, it first duplicates all its DNA and then packages the genetic material into compact structures called chromosomes. The chromosomes then line up neatly along the cell's midline and get yanked in half; that way, when the mother cell splits in two, half of the DNA ends up in each daughter cell.
An analysis of the patient's blood revealed that about 30% to 40% of her circulating blood cells carry an abnormal number of chromosomes — either too many or too few. Despite having cancer five times, the patient was treated relatively easily each time she developed the disease. And since her last tumor was removed in 2014, the patient hasn't developed another. The medical researchers think this may be thanks to her unique immune system.
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