A Study Collecting Blood Samples From Pregnant Women to Aid in the Development of a Noninvasive Prenatal Test

This is a prospective, multi-center specimen collection study; each subject's treatment,
management, or medical care will not be determined by the study protocol.

Women 18 years of age or older with a viable pregnancy of at least 10 weeks gestation will be
enrolled. A whole blood sample will be collected from each subject.

Subjects will be followed until data or specimens used to establish the clinical reference
standard are collected, and pregnancy outcome and birth information is collected (if
applicable). If cytogenetic test results from standard-of-care procedures are not available
and pregnancies end in live births, a neonatal buccal swab specimen will be collected.

Maternal specimens will be processed to plasma and stored for future testing with an
investigational NIPT(s). There will be no investigational NIPT results nor centralized CMA
LDT results generated under this protocol.

Cytogenetic results from standard-of-care procedures and microarray results will be used to
classify the clinical status of subjects according to the clinical reference standard.

Inclusion Criteria:

- Has a viable pregnancy of at least 10 weeks, 0 days gestation at the time of maternal
specimen collection (singleton or multiple pregnancy acceptable),

- Be 18 years of age or older at enrollment, and

- Is willing and able to provide documentation of informed consent.

Exclusion Criteria:

- Has a prior NIPT result from the current pregnancy,

- Had an invasive prenatal diagnostic procedure (eg, CVS, amniocentesis) in the current
pregnancy before maternal specimen collection,

- Has a history of transplant or malignancy,

- Had a transfusion of blood or blood components up to 8 weeks before maternal specimen
collection,

- Had preimplantation genetic screening for the current pregnancy (for in vitro
fertilization patients only), or

- Has already participated in the study (enrolled previously)