Prenatal Testing, Cancer Risk and the
Overdiagnosis Dilemma
By Ainsley Newson and Stacy Carter,
BioNews
| 04. 13. 2015
In March, US company
Sequenom revealed that its
MaterniT21 non-invasive prenatal test (NIPT) has detected potential cancer in some pregnant women (see
BioNews 793). As well as receiving information about their fetus, around 40 of the 400,000 or so women who have had this test have been informed that they may have cancer. One example of this was Dr Eunice Lee, who had investigations following an abnormal NIPT result that identified a 7cm colorectal tumour, which was then surgically removed.
This is a good thing, right? Women in the prime of their lives receiving information that may catch a cancer early. But, we suggest, it is not this simple. So-called liquid biopsies lead to ethical issues that go beyond the matter of using a test for one thing and finding out about something else. They are also a prime example of the problem of overdiagnosis. Before diving into this particular biopsy pool, we need to think carefully about what might be under the surface.
Read more...
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