PGDlab : For Physicians : What is PGD : Q & A

There are many possible causes for miscarriage. About 50% of first trimester miscarriages are due to a chromosome abnormality. This may be related to a woman’s age or a rearrangement in a parent’s chromosomes that predisposes the couple to conceive pregnancies with chromosome abnormalities. PGD can be performed for either of these possibilities. For women over 35, the greatest risk may be for aneuploidy, a pregnancy with the wrong number of chromosomes, such as Down syndrome. PGD for aneuploidy screening would offer these women a greater chance of a successful and healthy pregnancy. If a parent has a balanced structural chromosome rearrangement, such as a translocation, a different type of PGD is available.

I want to learn more about PGD for aneuploidy screening.

I want to learn more about PGD for a balanced structural chromosome rearrangement.

Please click on another question for more information.

• Is your patient a woman over 35?
• Has your patient experienced several miscarriages?
• Has your patient had a prior pregnancy with a chromosome abnormality?
• Has your patient experienced several failed IVF cycles?
• Has conceiving a pregnancy been difficult for your patient due to a low sperm count?
• Does your patient or patient's partner carry a balanced structural chromosome rearrangement?
• Does your patient have a family history of Huntington disease?
• Does your patient or patient's partner carry a recessive genetic disease such as cystic fibrosis?
• Does your patient or patient's partner carry an X-linked genetic disease such as hemophilia or Duchenne Muscular Dystrophy?
• Does your patient want to balance the gender in your family?

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