
DEVELOPING A MORE COMPLETE PICTURE
Interviews with mothers provide valuable information about
events in pregnancy, far beyond what is available in the medical
record. But it is difficult to recall what happened more than
9 months before: can you remember where you were, what you
ate, chemicals you may have encountered or how you were feeling?
Even if memories were precise, they don’t tell the complete
story—what was happening inside the body and at the cellular
level. Biologic testing is one way to fill these gaps—reconstructing
the events of pregnancy more accurately than ever before. Biologic
testing can include:
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DNA testing. Gene variants—in the
child or the mother—may interact with environmental
exposures, changing birth defects risks. |
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Biomarkers.
We can look for signs of infection, metabolic changes,
dietary factors or other conditions during pregnancy. |
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Future analysis. Banked specimens will help us take advantage
of new scientific and technologic breakthroughs as they occur. |
SAMPLE BANKING
The California Birth Defects Monitoring Program is pioneering
the use of specimens from statewide screening programs.
Given recent technologic advances, each specimen can be used
for hundreds of tests.
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Newborn screening. Infants
routinely have blood taken from their heels to test for
metabolic
conditions. Several blood spots are
blotted onto a filter paper. Many of our studies have
used extra blood spots to search for genetic variants. |
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Midpregnancy screening. The State’s
Expanded
AFP program offers
a blood test screening for birth defects to all expectant
mothers around 15-18 weeks of pregnancy. |
Started in January 2003, the California Birth Defects Monitoring Program has 261,000 pregnancy blood samples as of February 2006 and will store blood on about 100,000 pregnant women each year. Once pregnancy outcome is known, we can test
the blood to get clues about why some mothers had healthy children
while other mothers had children with birth defects and mental retardation. Biologic
banking/testing are powerful new tools for finding causes of birth defects. |
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WHAT ABOUT CONFIDENTIALITY?
Do you need permission to test banked samples?
In most cases, personal permission is not required to analyze banked
samples. Testing is only done under research protocols approved by
the State Institutional Review Board, which includes stringent safeguards
to protect human subjects.
Will you notify me about the results of blood tests performed
under research protocols?
No. Test results provide scientific rather than medical information—they
are unlikely to affect clinical care.
Does testing performed under research protocols tell about
paternity?
No. Most testing is of individuals, not family groups, and gives
no information about parentage.
Will my identity remain confidential?
Yes. The Program is committed to protecting confidentiality and privacy.
We only communicate findings on groups of people, not individuals.
We never publish any potentially identifying information.
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