[ Objective] This study was to analyze porcine IRGC gene, so as to lay the foundation of further revealing its function. [ Method] IRGC gene was cloned by using EST information together with sequencing, then aligned with the IRGC sequences of human, cattle, dog and orangutan for obtaining their similarities. [Result] Porcine IRGC cDNA obtained in the present study was 1 558 bp in length（GenBank accession number EU703776）, which shared high similarity with human （86%）, cattle （90%）, dog （91%）, orangutan （84%）. Sequence analysis shows that porcine IRGC gene encodes 464 amino acid residues which share high homologies with the counterparts from human （90%）, cattle （93%）, dog （95%）, orangutan （90%）. [Condusion] Cloning and sequence analysis of porcine IRGC gene would be helpful for studying its functions.
