Abstract: The present invention provides methods for diagnosing or identifying susceptibility of a subject to an anxiety or mood disorder. One method involves testing a sample obtained from the subject for the presence of a polymorphism in Intron 10 of the SLC1A1 gene. The presence of allele G or allele A of the A/G polymorphism rs301434 indicates that the patient is susceptible to an anxiety disorder. An alternate method involves testing a sample obtained from the subject for the presence of a polymorphism in the 3? untranslated region of the SLC1A1 gene. The presence of allele C of C/G polymorphism rs3087879 indicates that the patient is susceptible to an anxiety disorder. Furthermore, a method is provided that involves testing a sample obtained from the subject for the presence of a haplotype in the SLC1A1 gene, wherein the combined presence allele G of the A/G polymorphism rs301434 and allele C of C/G polymorphism rs3087879 indicates that the patient is susceptible to a mood disorder.

Abstract: The present invention provides methods for diagnosing or identifying susceptibility of a subject to an anxiety or mood disorder. One method involves testing a sample obtained from the subject for the presence of a polymorphism in Intron 10 of the SLC1A1 gene. The presence of allele G or allele A of the A/G polymorphism rs301434 indicates that the patient is susceptible to an anxiety disorder. An alternate method involves testing a sample obtained from the subject for the presence of a polymorphism in the 3? untranslated region of the SLC1A1 gene. The presence of allele C of C/G polymorphism rs3087879 indicates that the patient is susceptible to an anxiety disorder. Furthermore, a method is provided that involves testing a sample obtained from the subject for the presence of a haplotype in the SLC1A1 gene, wherein the combined presence allele G of the A/G polymorphism rs301434 and allele C of C/G polymorphism rs3087879 indicates that the patient is susceptible to a mood disorder.