Abstract
Early prenatal diagnosis of genetic diseases allows for timely intervention or prevention of thediseases in newborns. Conventional prenatal diagnosis of most genetic diseases relies on testing fetal DNA obtained by invasive procedures such as amniocentesis or chorionic villus sampling, which are associated with small risks of fetal loss. Maternal circulating blood contains cell-free DNA (cfDNA) from the fetal genome and can thus be used to noninvasively detect fetal genetic diseases such as chromosomal abnormalities, copy number variants, and single gene diseases. However, due to the presence of a high level of maternal cfDNA in the maternal blood stream, a relative haplotype dosage (RHDO) analysis is required to detect the mutant loci in the fetal genome when performing noninvasive prenatal diagnosis (NIPD) by massively parallel sequencing (MPS) of cfDNA. In this chapter, we describe a protocol utilizing the RHDO strategy for NIPD of any gene of interest associating with single gene diseases.
Published Version
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