Hybridization-Mediated Analysis Of Polymorphisms

Abstract

Described are methods of assay design and assay image correction, useful for multiplexed genetic screening for mutations and polymorphisms, including CF-related mutants and polymorphs, using an array of probe pairs (in one aspect, where one member is complementary to a particular mutant or polymorphic allele and the other member is complementary to a corresponding wild type allele), with probes bound to encoded particles (e.g., beads) wherein the encoding allows identification of the attached probe. The methods relate to avoiding cross-hybridization by selection of probes and amplicons, as well as separation of reactions of certain probes and amplicons where a homology threshold is exceeded. Methods of correcting a fluorescent image using a background map, where the particles also contain an optical encoding system, are also disclosed.

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