The invention relates to the isolation of novel cyclooxygenase type 1 (COX-1) variant enzymes. More specifically, the invention relates to the identification of cyclooxygenase transcripts harboring inton 1, or fragment thereof, of cyclooxygenase 1. The invention further relates to the diagnosis of aberrant cyclooxygenase type 1 variant gene or gene product; the identification, production, and use of compounds which modulate cyclooxygenase type 1 variant gene expression or the activity of the cyclooxygenase type 1 variant gene product including but not limited to nucleic acid encoding cyclooxygenase type 1 variants and homologues, analogues, and deletions thereof, as well as antisense, ribozyme, triple helix, antibody, and polypeptide molecules as well as small inorganic molecules; and pharmaceutical formulations and routes of administration for such compounds.