Methods for detecting a polymorphism in the NFKB1 gene promoter
The present invention discloses a functional relationship between a recognized disease condition and a polymorphism in the nucleotide factor kappa B promoter (NFKB1). This relationship provides a platform for methods of altering promoter activity and for determining similar relationships between specific pathologies and identified polymorphisms. A statistically significant risk of developing ulcerative colitis was shown to be correlated with the presence of an ATTG insertion/deletion in the NFKB1 promoter and is likely to apply also to a variety of other inflammatory diseases.
1. A method for identifying a human subject at increased risk for developing ulcerative colitis, comprising detecting the presence of a −94del ATTG allele in the NFKB1 gene promoter in a biological sample of said subject, wherein homozygosity of the −94del ATTG allele is indicative of an increased risk to develop ulcerative colitis compared with a subject having a −94ins ATTG allele.
2. The method of claim 1 wherein the subject at increased risk for developing ulcerative colitis is genetically related to a subject exhibiting symptoms of ulcerative colitis.
3. The method of claim 2 wherein the subject at risk to develop ulcerative colitis is genetically related to a second subject exhibiting ulcerative colitis.
4. A method for determining the presence of a −94del ATTG polymorphism in a human subject homozygous or heterozygous for the polymorphism, comprising amplifying genomic DNA with a first set of primers and a second set of primers to produce an amplified product, wherein the first set of primers comprise a first primer consisting of SEQ ID NO:12 and a second primer consisting of SEQ ID NO:13, and the second set of primers comprise a first primer consisting of SEQ ID NO:14 and a second primer consisting of SEQ ID NO:15, wherein the primers bracket position −91 to −94 in the NFKB1 gene promoter, and wherein the sequences of the amplified product are compared to SEQ ID NO: 1 to identify the −94del ATTG polymorphism.