Abstract: A method for detecting a genetic polymorphism(s), comprising creating oligonucleotide probes and/or oligonucleotide primers so that the probes and/or primers contain a polymorphic site(s) present in a gene encoding a receptor or a sequence complementary thereto or so that the polymorphic site(s) is/are contained in the amplified fragment when at least one of said gene encoding the receptor and said sequence complementary thereto is amplified; and detecting at least one genetic polymorphism in a gene of a subject encoding the receptor using the resultant oligonucleotide probes and/or oligonucleotide primers.