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Giving unique and meaningful names to every human gene

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This online database does not include our confidential data. If you would like to create a new gene symbol and name, the only way to confirm it as unique is by contacting us.

Click on the Approved Gene Symbol to retrieve the complete gene record

Approved Symbol Approved Name Previous Symbols Aliases Chromosome Accession Numbers RefSeq IDs
C1QA complement component 1, q subcomponent, A chain     1p36.3-p34.1 AF135157 NM_015991
C1QB complement component 1, q subcomponent, B chain     1p36.3-p34.1 X03084 NM_000491
C1QC complement component 1, q subcomponent, C chain C1QG   1p36.11 AK057792 NM_172369
C1R complement component 1, r subcomponent     12p13 M14058  
C1S complement component 1, s subcomponent     12p13   NM_001734
C2 complement component 2     6p21.3    
C3 complement component 3   CPAMD1 19p13.3-p13.2 J04763 NM_000064
C3AR1 complement component 3a receptor 1   C3AR, AZ3B 12p13.31 U28488  
C4A complement component 4A (Rodgers blood group)   CPAMD2, C4S, CO4, C4, C4A3, C4A2, C4A4, C4A6, C4B, RG 6p21.3 L26261, M14823, X77491, AY224378 NM_007293
C4B complement component 4B (Childo blood group)   CPAMD3, C4F, CO4, C4B1, C4B3, CH 6p21.3 AF019413 NM_001002029
C5 complement component 5   CPAMD4 9q33-q34 M57729 NM_001735
C5AR1 complement component 5a receptor 1 C5R1 C5A, C5AR, CD88 19q13.3-q13.4   NM_001736
C6 complement component 6     5 J05024  
C7 complement component 7     5 J03507  
C8A complement component 8, alpha polypeptide     1p32.2 M16974 NM_000562
C8B complement component 8, beta polypeptide     1p36.2-p22.1 M16973  
C8G complement component 8, gamma polypeptide     9q X06465  
C9 complement component 9     5p14-p12    
CD46 CD46 molecule, complement regulatory protein MIC10, MCP TRA2.10, MGC26544, TLX 1q32 BC030594 NM_172361
CD59 CD59 molecule, complement regulatory protein MIC11, MIN1, MSK21, MIN2, MIN3 16.3A5, EJ16, EJ30, EL32, G344, p18-20 11p13   NM_203329
CFB complement factor B BFD, BF H2-Bf 6p21.3 L15702 NM_001710
CFD complement factor D (adipsin) DF, PFD ADN 19p13.3 M84526 NM_001928
CFH complement factor H HF, HF1, HF2 HUS, FHL1, ARMS1 1q32 Y00716 NM_000186
CFHR1 complement factor H-related 1 HFL1, CFHL1, CFHR1P, HFL2, CFHL1P H36-1, FHR1, CFHL, H36-2 1q32 M65292 NM_002113
CFHR2 complement factor H-related 2 HFL3, CFHL2 FHR2 1q31.3 X64877 NM_005666
CFHR3 complement factor H-related 3 CFHL3 FHR-3, HLF4, FHR3, DOWN16 1q32 X68679 NM_021023
CFHR4 complement factor H-related 4 CFHL4 FHR-4, FHR4 1q32 X98337, AJ640130 NM_006684
CFHR5 complement factor H-related 5 CFHL5 FHR5, FHR-5 1q31.3 AF295327 NM_030787
CFI complement factor I IF FI, C3b-INA, KAF 4q25 J02770 NM_000204
CFP complement factor properdin PFC   Xp11.4 M83652 NM_002621
CR1 complement component (3b/4b) receptor 1 (Knops blood group)   CD35, KN 1q32 Y00816 NM_000573
CR1L complement component (3b/4b) receptor 1-like     1q32.1 AY114160 XM_114735
CR2 complement component (3d/Epstein Barr virus) receptor 2   CD21 1q32 M26004 NM_001877
ITGAM integrin, alpha M (complement component 3 receptor 3 subunit) CR3A, CD11B MAC-1, CD11b 16p11.2 J03925 NM_000632
ITGAX integrin, alpha X (complement component 3 receptor 4 subunit) CD11C CD11c 16p11.2 BC038237 NM_000887
ITGB2 integrin, beta 2 (complement component 3 receptor 3 and 4 subunit) CD18, MFI7 LFA-1, MAC-1 21q22.3 AK222505 NM_000211

The work of the HGNC is supported by NHGRI grant P41 HG003345, the UK Medical Research Council and the Wellcome Trust.