By Daniel Allott on 6.8.09 @ 6:08AM
A new genetic test for Down syndrome is put on hold -- most
likely on temporary hold.
Technological advancements have afforded many benefits to the
pro-life cause. Ultrasound imaging has revealed the child in the
womb as a living, feeling human being, and at earlier stages than
previously thought possible. The widespread use of such
technology helps explain significant shifts towards the
pro-life position -- both in
sentiment and in deed,
especially among young Americans -- over the last fifteen years.
But medical technology has had some negative effects, too,
especially for unborn babies with disabilities. Ultrasound
imaging is routinely employed to discern genetic abnormalities in
unborn children and to end the lives of those who fail to meet
the standards of a culture that increasingly views genetic
perfection as an entitlement.
This month, Sequenom, a company that makes genetic analysis
products, was set to release a new genetic test for Down
syndrome. The test, called SEQureDX, has been hailed by
some as "the Holy Grail of genetic testing," because it is safer
and more accurate than any previous prenatal genetic test. But
once it hits the market, SEQureDX may become known for something
far less inspiring: as a leading tool for the elimination of an
entire class of people.
Currently, prenatal genetic testing involves a combination of
blood tests and ultrasounds to determine whether an unborn child
faces significant risk of having a disability. Some women undergo
further testing to confirm or rule out a diagnosis. The most
common test in amniocentesis, in which amniotic fluid is
extracted from the amniotic sac surrounding the baby. Fetal DNA
in the tissue contained in the fluid is then examined for genetic
abnormalities.
But many women eschew amniocentesis. Not only must amniocentesis
wait until the second trimester of pregnancy, but it also carries
a significant risk of miscarriage (as high as 2 percent) and
risks causing fetal abnormalities, pre-term birth and fetal
trauma.
The new tests, including SEQureDX, are less invasive, more
accurate and can detect a broader range of fetal conditions with
more sophisticated blood tests that examine a baby's genetic
information in DNA that circulate in the mother's bloodstream.
Though the new tests are safer for both mother and child, they
will create a profoundly unsafe environment for babies who test
positive for genetic abnormalities.
Surveys have shown that as many as nine out of 10 babies with
Down syndrome are aborted once their disability is detected. Even
using the more invasive prenatal genetic testing, the number of
Down syndrome live births declined 7.8 percent between 1989 and
2001, according to a study published in the American Journal
of Obstetrics and Gynecology.
But the number of babies born with disabilities could plummet
once the new tests become available, and as more physicians begin
to follow the advice of the American College of Obstetricians and
Gynecologists (ACOG), which in 2007 recommended universal
screening for Down syndrome.
All of this worries pro-life and disability rights advocates, who
fear what may result when such tests are put in the hands of a
medical establishment with a decidedly anti-life bias against
disability. In a recent article in the Journal of the
American Medical Association, Peter A. Benn and Audrey R.
Chapman argue that the new tests raise "significant ethical
issues," which will require an "ill-prepared medical system to
change how patients are counseled and how cases are managed."
Benn and Chapman call for oversight of genetic testing by the
United States Food and Drug Administration.
A further fear is that screening for disability and disease in
unborn children will lead to widespread use of techniques that
allow couples undergoing fertility treatments to create embryos
and select both gender and physical traits in a baby.
Pre-implantation genetic diagnosis,
or PGD, allows parents to create designer babies by screening and
then destroying embryos determined to have higher risk of severe
genetic conditions. So parents can screen embryos that are the
"wrong" sex, or that have the "wrong" eye or hair color, height
and other physical traits in what the director of one clinic in
Los Angeles calls "cosmetic medicine."
Polls show most Americans oppose genetic testing for cosmetic
enhancement (one poll found about 10 percent of respondents
supported genetic testing for athletic ability). But there is
potential for it to catch on, especially since, even though PGD
is banned in many other countries, it is completely unregulated
in the United States.
Also, polls show public support for abortion is strongest when
testing indicates a high likelihood of fetal abnormality. That
explains why Sequenom's CEO, Harry Stylii, believes the market
for prenatal testing for chromosomal disorders like Down syndrome
could be $3 billion to $5 billion or more worldwide. It also
explains why shares of Sequenom increased 200 percent in 2008
after the company revealed successful early testing of SEQureDX.
But recent developments may delay the impending epidemic of
disability abortions caused by enhanced genetic testing. In
February, due to "mishandling" of data by employees, Sequenom
revised downward the results of its initial tests, re-estimating
the accuracy of SEQureDX from 99.9 percent to 96.6 percent.
Then, in May, five investors filed suit against Sequenom for
issuing materially false and misleading statements about the
accuracy of its Down syndrome test. That followed an April
29th announcement that the company would delay
launching SEQureDX in order to review all test data.
None of this means unborn babies with disabilities will be
granted an extended reprieve. Sequenom says it wants to have a
validated test by the fourth quarter of 2009 and new tests
launched by late 2010 or early 2011. And at least three other
companies are developing similar genetic tests and hope to have
them on the market by the end of the year.
A mother's womb is already the most hazardous place on earth for
a baby. It won't be long before it becomes a death chamber for
almost all babies with disabilities.
topics:
Abortion, Genetic Testing, Down Syndrome