Diagnostic method and kit for determining Rh blood group genotyp

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving nucleic acid

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435 6, 435 912, 435810, 436501, 436520, 436 68, 536 231, 536 235, 536 2431, 536 2433, 935 77, 935 78, C12Q 168, G01N 33555, C07H 2104, C12N 1500

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057232938

ABSTRACT:
The invention provides a diagnostic method of determining Rh genotypes by the identification of the molecular basis of Rh polymorphisms. Specifically, the invention provides a method for directly determining Dd and associated CcEe genotypes with great accuracy, overcoming problems associated with traditional serologic typing methods and leading to a direct discrimination of D/D, D/d, and d/d genetic status. The diagnostic method allows genotyping of fetuses to assess the risk of hemolytic diseases caused by Rh alloimmunization and genetic counseling and/or testing of couples to predict the outcome of pregnancies in relation to Rh incompatibilities. The method of the invention preferably employs amplification of Rh nucleic acid sequences, and employs differential cleavage of RhD-, RhCc- and/or RhEe-specific nucleic acid sequences by a restriction enzyme. Furthermore, diagnostic kits for the determination of Rh genotypes are provided.

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