The list of conditions for whch PGD is performed is being extended
rapidly. PGD involves chemical stimulation of the mother to produce
several oocytes, which are then collected in a short procedure,
guided by ultrasound. These oocytes are then fertilized in-vitro
and the resulting embryos are analyzed to assure that they do not
carry the mutation. If the mother has the mutation, polar body
biopsy is performed to select the oocytes to transfer. If the father
is affected, blastomere biopsy is performed. All this testing is
done with the strictest quality control, with analysis of the mutation
and its linked markers to minimize the risk of allele drop-out
and preferential amplification. At present the PGD Disorders tested
list includes the list below. Where possible we provided a link
to a website with more information under "Disorder Tested", a
link to a medical website under "Link", an "X" to
indicate a healthy "Baby" was conceived, and an "X" to indicate
a "PGD"
and "Pregnancy" procedure is available.