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Gene Family: Interferons (IFN)

Interferon: Interferons (IFNs) are proteins made and released by host cells in response to the presence of pathogens such as viruses, bacteria, parasites or tumor cells. They allow for communication between cells to trigger the protective defenses of the immune system that eradicate pathogens or tumors. IFNs belong to the large class of glycoproteins known as cytokines. Interferons are named after their ability to "interfere" with viral replication within host cells. IFNs have other functions: they activate immune cells, such as natural killer cells and macrophages ; they increase recognition of infection or tumor cells by up-regulating antigen presentation to T lymphocytes ; and they increase the ability of uninfected host cells to resist new infection by virus. Certain symptoms, such as aching muscles and fever, are related to the production of IFNs during infection. [Source: Wikipedia]

Genes contained within the family: 33

Approved Symbol Approved Name Previous Symbols Synonyms Chromosome
IFNA1 interferon alpha 1 IFNA@, IFL, IFN, IFN-ALPHA, IFNA13, IFN-alphaD 9p21.3
IFNA2 interferon alpha 2 IFNA, IFN-alphaA 9p21.3
IFNA4 interferon alpha 4 MGC142200, IFN-alpha4a 9p21.3
IFNA5 interferon alpha 5 IFN-alphaG 9p21.3
IFNA6 interferon alpha 6 IFN-alphaK 9p21.3
IFNA7 interferon alpha 7 IFNA-J, IFN-alphaJ 9p21.3
IFNA8 interferon alpha 8 IFN-alphaB 9p21.3
IFNA10 interferon alpha 10 IFN-alphaC 9p21.3
IFNA11P interferon alpha 11, pseudogene IFNP11 9p21.3
IFNA12P interferon alpha 12, pseudogene IFNP12 9p21.3
IFNA13 interferon alpha 13 9p21.3
IFNA14 interferon alpha 14 LEIF2H, IFN-alphaH 9p21.3
IFNA16 interferon alpha 16 IFN-alphaO 9p21.3
IFNA17 interferon alpha 17 LEIF2C1, IFN-alphaI 9p21.3
IFNA20P interferon alpha 20, pseudogene IFNP20 9p21.3
IFNA21 interferon alpha 21 IFN-alphaI 9p21.3
IFNA22P interferon alpha 22, pseudogene IFNAP22 9p21.3
IFNB1 interferon beta 1 IFNB IFB, IFF 9p21.3
IFNG interferon gamma 12q15
IFNK interferon kappa 9p21.2
IFNL1 interferon lambda 1 IL29 IL-29 19q13.2
IFNL2 interferon lambda 2 IL28A IL-28A 19q13.2
IFNL3 interferon lambda 3 IL28B IL-28B, IL28C 19q13.2
IFNNP1 interferon nu 1, pseudogene 9p21.3
IFNWP2 interferon omega 1 pseudogene 2 9p21.3
IFNWP4 interferon omega 1 pseudogene 4 9p21.3
IFNWP5 interferon omega 1 pseudogene 5 9p21.3
IFNWP9 interferon omega 1 pseudogene 9 9p21.3
IFNWP15 interferon omega 1 pseudogene 15 9p21.3
IFNWP18 interferon omega 1 pseudogene 18 pseudo-IFN-alpha-m 9p21.3
IFNWP19 interferon omega 1 pseudogene 19 9p21.3
IFNW1 interferon omega 1 9p21.3
IL6 interleukin 6 IFNB2 IL-6, BSF2, HGF, HSF 7p15.3


The human IFNA cluster on 9p22 is equivalent to the mouse Ifna cluster on chromosome 4 but is not possible to make 1-1 orthology calls for mouse and human genes within the two clusters.

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