Details

SpeciesHuman
Species subgroup
Subgroup type
Sequence NameIGHV3-21*i01
IUIS Name
Alternative names
Affirmation Level1
Full Sequence
Coding Sequence
FunctionalityF
Inference TypeRearranged Only
Mapped
Paralogs
Paralog Rep

Un-rearranged Observations

Un-rearranged sequence observations that support this sequence:

No Items

Observations in AIRR-seq Repertoires

Click here to review supporting data in VDJbase.

Clicking the link will take you to VDJbase. Open in a new tab if you want to keep this page open. In VDJbase, click on the count in the Apperances column to see a list of samples in which the sequence was found.

Additional Information

Sequence IDA00037
Curator
Curator addressSchool of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney Australia
Version1
Release Date2019-10-31
Release Notes

This sequence was considered and affirmed at IARC Meetings 40 and 43.

LocusIGH
Sequence TypeV
Gene Subgroup3
Gene Designation21
Allele Designationi01

Acknowledgements

Individuals acknowledged as contributing to this sequence:

NameInstitutionORCID ID
Néstor Vázquez BernatKarolinska Institutet SE-171 77 Stockholm

Notes

Notes are added by IARC reviewers.

The 40th meeting of the IARC on August 7th 2019 considered the sequence IGHV3-21*01_S5868. The sequence represents IGHV3-21*01 C159T C164A in the IMGT numbering system. The committee noted a rearrangement frequency of 1.5%, with 9064 alignments including 5167 perfect matches to the inferred allele. Alignments were also seen to four other IGHV3-21 sequences, though only one of these sequences was abundant (IGHV3-21*01: 12914 alignments, 8386 unmutated alignments). Haplotyping based on IGHJ6 alleles confirmed the segregation of reads associated with these two alleles to the different haplotypes Alignments to the three other alleles shown in the genotype were at trivial levels (<0.01% of ‘unmutated’ alignments, in each case). There were 1394 different CDR3s associated with the inference, including 614 different CDR3s associated with unmutated alignments. The committee agreed that the sequence should be accepted as a Level 1 sequence as IGHV3-21*i01. In line with previous policy, the submitted sequence is recognized up to and including nucleotide 319. A trailing “.” in the affirmed sequence indicates IARC’s opinion that the sequence is likely to contain an additional 3’ nucleotide for which there is insufficient evidence to make an affirmation.

Reanalysis of the original submission at Meeting 43 of the IARC on October 7, 2019 again identified the same novel allele IGHV3-21*01_S5868 (IGHV3-21*01 C159T C164A) with 9370 sequences and 5226 perfect matches and 628 Unique CDR3s with unmutated Seqs. In this analysis only one other allele of IGHV3-21 was seen (as very rare inferences had been removed by IgDiscover filtering), IGHV3-21*01 with 13799 sequences and 8576 perfect matches giving a 40:60 allelic ratio. These alleles were very well separated by IGHJ6-based haplotype analysis (1:99 and 99:1, respectively). The re-analysis thus confirmed the inference of IGHV3-21*i01 as a Level 1 sequence. In line with previous policy, the submitted sequence is recognized up to and including nucleotide 319. A trailing “.” in the affirmed sequence indicates IARC’s opinion that the sequence is likely to contain an additional 3’ nucleotide for which there is insufficient evidence to make an affirmation.

Attachments

Supplementary Files
 

History

History logs the times and reasons for the publication of each version of this sequence.

Andrew Collins
2019-10-31 05:31:42
Version 1 published

This sequence was considered and affirmed at IARC Meetings 40 and 43.

Versions

All published versions of this sequence.

Sequence NameIMGT NameAlternative namesInference TypeAffirmation LevelSpecies subgroupSubgroup typeVersionDate
IGHV3-21*i01Rearranged Only112019-10-31
IGHV3-21*i01IGHV3-21*05Rearranged Only122019-11-26
IGHV3-21*05IGHV3-21*05IGHV3-21*i01Rearranged Only132023-07-10