Citing IMGT dynamic tools: Sanou G., Zeitoun G. et al. IMGT® at scale: FAIR, Dynamic and Automated Tools for Immune Locus Analysis, Nucleic Acids Research. 2025;,gkaf1024. doi: 10.1093/nar/gkaf1024 (Free Article) PMID: 41091930.
Select a species and a locus:
Only IMGT available species/locus are shown in the drop-down list.

Human (Homo sapiens) IGK locus (on chromosome 2 at 2p11.2) gene repertoire per assembly:

Human (Homo sapiens) IGKV gene numbers per subgroup in IMGT annotated assemblies:

For each available species and locus, the evaluation of a locus gene repertoire is displayed in tables per gene type: V, D, J or C.
The first column on the left lists either IMGT subgroups for V genes, or IMGT sets or subgroups for D and J genes, or IMGT gene names for constant genes. Clicking on the link provides the lists of corresponding IMGT alleles per IMGT functionality.
Columns in «IMGT annotated assemblies» display for each IMGT annotated assembly the number of IMGT genes per functionality.
The two columns in «Number of genes» are shown only if there is more than one IMGT annotated assembly. These columns display the numbers of genes which are either «common to all IMGT annotated assemblies» or «Not common to all IMGT annotated assemblies».
The numbers of IMGT genes in the tables are provided per functionality (F for functional, O for ORF, P for pseudogene). If IMGT alleles for a given IMGT gene have different functionalities, these are concatenated (for example: 1 FOP).

Subgroup IMGT annotated assembliesNumber of genes
GRCh38.p14T2T-CHM13v2.0Common to all IMGT
annotated assemblies		Not common to all IMGT
annotated assemblies
IGKV118 F + 3 O + 8 P20 F + 3 O + 8 P18 F + 3 O + 8 P2 F
IGKV29 F + 1 O + 17 P9 F + 1 O + 17 P9 F + 1 O + 17 P0
IGKV37 F + 1 O + 6 P7 F + 1 O + 6 P7 F + 1 O + 6 P0
IGKV41 F1 F1 F0
IGKV51 F1 F1 F0
IGKV62 F + 1 O2 F + 1 O2 F + 1 O0
IGKV71 P1 P1 P0
IGKV(II)02 P02 P
Total number of IMGT genes38 F + 6 O + 32 P
50%
8%
42%
40 F + 6 O + 34 P
50%
8%
43%
38 F + 6 O + 32 P2 F + 2 P
Human (Homo sapiens) IGKJ gene numbers per set or subgroup in IMGT annotated assemblies:
Set or subgroup IMGT annotated assembliesNumber of genes
GRCh38.p14T2T-CHM13v2.0Common to all IMGT
annotated assemblies		Not common to all IMGT
annotated assemblies
IGKJ11 F1 F1 F0
IGKJ21 F1 F1 F0
IGKJ31 F1 F1 F0
IGKJ41 F1 F1 F0
IGKJ51 F1 F1 F0
Total number of IMGT genes5 F
100%
5 F
100%
5 F0
Human (Homo sapiens) IGKC gene numbers per gene name in IMGT annotated assemblies:
Gene name IMGT annotated assembliesNumber of genes
GRCh38.p14T2T-CHM13v2.0Common to all IMGT
annotated assemblies		Not common to all IMGT
annotated assemblies
IGKC1 F1 F1 F0
Total number of IMGT genes1 F
100%
1 F
100%
1 F0
Human (Homo sapiens) IGK alleles per subgroup (set or gene name) and functionality in IMGT annotated assemblies:

The table displays IMGT alleles identified for Human (Homo sapiens) IGK locus per subgroup and functionality (F, O, P) in IMGT annotated assemblies.
Sign # indicates IMGT genes which are not common to all IMGT annotated assemblies.

Subgroup (set or gene name) GRCh38.p14 T2T-CHM13v2.0
F O P F O P
More information:
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