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.
Program version: v. 

Add information about removed genes/alleles.
May 15th, 2025.

Add the possibility to obtain a gene table per strain (for mouse now and for other species later) and allotypes/isotypes for human.
September 25th, 2024.

Bibliographical references in alphabetic order, small design changes and addition of "NL" for non-localized gene.
June 14th, 2024.

Addition of 'Score for IMGT allele confirmation' as well as NCBI TPA accession numbers.
September 20th, 2023.

Implementation of the dynamic gene table.

Gene table legend:

"+" or "-" indicates if the gene sequences have been found (+) or not been found (-) rearranged (R), transcribed (T) and/or translated into protein (Pr). Arbitrarily that information is shown on the first line of each gene, when the data have been confirmed by several studies.

Functionality is shown in parentheses, (F) and (P), when the accession number refers to rearranged genomic DNA or cDNA and the corresponding germline gene has not yet been isolated.

IMGT allele confirmation: A scoring system is employed to indicate the number of IMGT/LIGM-DB reference sequences and other sequences from the literature in which an IG or TR gene allele has been identified and annotated.

Removed genes/alleles
If a gene/allele existence or name has to be changed, the old name or gene/allele would be deleted and its name won't be reused. They are kept in the gene table for historical reasons.
A single star ()
indicates that an IG or TR gene allele is annotated in the reference sequence only.
Two stars ()
indicate that an IG or TR gene allele is annotated in its reference sequence and in one sequence from the literature.
Three stars ()
indicate that an IG or TR gene allele is annotated in its reference sequence and in at least two sequences from the literature.
In the Excel file, the stars are represented by the plus symbol (+).

Click on:
  • IMGT gene name to get the corresponding IMGT/GENE-DB entry (link).
  • IMGT allele name to see the corresponding Alignments of alleles (link).
  • Accession number to get the corresponding IMGT/LIGM-DB entry (link).
  • MAP: mapped sequences. Click to access GENE-DB «LOCALIZATION IN GENOME ASSEMBLIES» (link).
  • [number] to access the corresponding IMGT reference (popover).
  • (number) to see the corresponding IMGT note (popover).
Options:
  • You can show/hide columns (), download data () or put the table in fullscreen () using buttons.
See also (IMGT Scientific chart):
Select a species and a IMGT group to get the gene table:
Only IMGT available species/group are shown in the drop-down list.
The gene table can take several seconds to appear, please be patient.

The 7 human (Homo sapiens) IGKV subgroups belong to three clans (Figure IGKV clans). Clans comprise, respectively:

IGKV gene names are designated by a number for the subgroup, followed by a dash and a number for the localization from 3' to 5' in the locus. The IGKV genes of the distal duplicated V-CLUSTER are designated by the same number as the corresponding genes in the proximal V-CLUSTER, with the letter D added.

Gene table of human (Homo sapiens) IGKV (clans) IMGT group:
IMGT sub­groupIMGT gene nameIMGT allele nameScore for
IMGT allele
confirmation		FctChromosomosal
localization		R T PrIMGT/LIGM-DB reference sequencesIMGT/LIGM-DB sequences from the literature
Clone namesAccession
numbers		Positions
in the sequence
(L-V-GENE-UNIT)
or V-REGION (*)		Secondary
accession
numbers		Clone namesAccession
numbers		Positions
in the sequence
(L-V-GENE-UNIT)
or V-REGION (*)
IGKV(II)IGKV(II)-26-1 IGKV(II)-26-1*01 P (1) 2p11.2 IMGT000281 [5] MAP 1587733-1588354 IMGT000273 [4] 1601244-1601865
IMGT000305 [1-3] 1538547-1539168
IMGT000308 [1-3] 1527752-1528373
IGKV(II)IGKV(II)D-26-1 IGKV(II)D-26-1*01 P (1) 2p11.2 IMGT000281 [5] MAP complement(266227-266848) IMGT000273 [4] complement(290629-291250)
IMGT000305 [1-3] complement(266224-266845)
IMGT000308 [1-3] complement(266229-266850)
IMGT notes: ↑
  1. no L-PART2, frameshift in V-REGION: deletion of 1 nt in FR3-IMGT
IMGT references: ↑
  1. Chu et al., Approaching an Error-Free Diploid Human Genome Assembly of East Asian Origin, (misc) bioRxivorg, 2025, DOI: 10.1101/2025.08.01.667781
  2. Chu et al., Direct Submission, Computational Biology, Beijing Institute of Genomics, Chinese Academy of Sciences / China National Center for Bioinformation. Submitted (16-AUG-2025). NGDC, Beijing, 100101, China.
  3. He et al., T2T YAO: A Telomere to telomere Assembled Diploid Reference Genome for Han Chinese, Genomics Proteomics & Bioinformatics 21(6): 1085–1100 (2023), DOI: 10.1016/j.gpb.2023.08.001
  4. Liao W.W. et al., A draft human pangenome reference, Nature, vol. 617, no. 7960, 2023, pp. 312-324. PUBMED: 37165242
  5. Nurk S. et al., The complete sequence of a human genome, Science, vol. 376, no. 6588, 2022, pp. 44-53. PUBMED: 35357919