Variant
ITGA2B E776_A777dup
NM_000419.5(ITGA2B):c.2326_2331dup (p.Glu776_Ala777dup)
- p.Glu776_Ala777dup
- p.E776_A777dup
- rs2143440798
- ClinVar classification
- Likely pathogenic
- Review status
- 3 stars out of 4reviewed by expert panel
- Last evaluated
- 18 February 2025
- Expert panel
- ClinGen Platelet Disorders Variant Curation Expert Panel, ClinGen
Data current to ClinVar release 2026-10-12 · Dante Labs data release 2026.10.16-c6eea6bfFacts last changed 16 October 2026
Reference genomeGRCh38hg38
Positions on gene and variant pages follow this choice, in this browser.
Summary
E776_A777dup is an in-frame variant in ITGA2B: it adds or removes one or more amino acids without shifting how the rest of the gene's code is read. ClinVar classifies it as likely pathogenic for Glanzmann Thrombasthenia (reviewed by expert panel).
ClinVar classifications
| Condition | Classification | Review status | Submissions | Last evaluated |
|---|---|---|---|---|
| Glanzmann ThrombastheniaClinVar VCV001691462 (opens in a new tab) | Likely pathogenic | 3 stars out of 4reviewed by expert panel | 1 submission | 18 February 2025 |
Classifications as ClinVar records them in release 2026-10-12. ClinVar updates them as evidence is reviewed.
Where it lies in ITGA2B
E776_A777dup lies in exon 23 of the 30 in ITGA2B's MANE Select transcript, NM_000419.5.
Molecular details
| Gene | ITGA2B |
|---|---|
| Transcript | NM_000419.5MANE Select |
| Coding DNA change (HGVS c.) | c.2326_2331dup |
| Protein change (HGVS p.) | p.Glu776_Ala777dupp.E776_A777dup |
| Predicted consequence | In-frame insertion or deletionconservative_inframe_insertion (opens in a new tab) |
| Predicted impact | Moderate |
| Position (GRCh38) | chr17:44376324 G>GGGCCTC |
| Position (GRCh37) | chr17:42453692 G>GGGCCTC |
| dbSNP ID | rs2143440798 (opens in a new tab) |
| ClinVar Variation ID | VCV001691462 (opens in a new tab) |
| ClinVar Allele ID | 1683941 |
| ClinGen Allele Registry ID | CA915940324 (opens in a new tab) |
| ClinVar name | NM_000419.5(ITGA2B):c.2326_2331dup (p.Glu776_Ala777dup) |
ITGA2B E776_A777dup in other databases
Reports that look at this variant (1)
These Genome Test condition reports include E776_A777dup among the variants they look at.
| Report | Conditions | Inheritance |
|---|---|---|
| Inherited Platelet Function Disorders | Glanzmann Thrombasthenia | Autosomal recessive |
Other variants in ITGA2B
- A31Pfs*2Pathogenic3 stars out of 4
- A139VLikely pathogenic3 stars out of 4
- A216VLikely pathogenic3 stars out of 4
- A232Cfs*24Pathogenic3 stars out of 4
- A271GLikely pathogenic3 stars out of 4
- A297PLikely pathogenic3 stars out of 4
- A341TLikely pathogenic3 stars out of 4
- A477Gfs*111Pathogenic3 stars out of 4
- A477PLikely pathogenic3 stars out of 4
- A658Efs*37Likely pathogenic3 stars out of 4
Limitations
This page describes publicly available information about a genetic variant. It is not a diagnosis, and it says nothing about whether you or anyone else carries this variant.
Classifications come from ClinVar and change as new evidence is reviewed. A classification here may differ from the one in ClinVar today, or from the one a laboratory reports.
Whole genome sequencing with short reads can miss or miscall some variants, particularly in repeated or highly similar stretches of DNA and in large insertions, deletions or rearrangements.
If you have questions about a variant in your own results or in your family, talk to a genetic counsellor or your doctor.
Sources & credits
- Classifications from ClinVar (release 2026-10-12), National Center for Biotechnology Information.
- Condition terms from the Mondo Disease Ontology (release 2026-10-06), used under CC BY 4.0.
- Gene symbols and names from the HUGO Gene Nomenclature Committee (release 2026-10-16).
- Allele identifiers from the ClinGen Allele Registry (release 2026-10-16-c4908f54).
- Reference SNP identifiers from dbSNP (release b157), National Center for Biotechnology Information.
- Gene–disease links from the Gene Curation Coalition, GenCC (release 2026-10-16).
- Difficult regions from the Genome in a Bottle Consortium (release v3.6).
- Transcripts from MANE (release v1.5), NCBI and EMBL-EBI.
- Predicted consequences from mehari (release 0.11.0), with transcript models from cdot.
- Built from Dante Labs data release 2026.10.16-c6eea6bf of 16 October 2026.
Cite this page
Dante Labs. (16 October 2026). ITGA2B E776_A777dup (c.2326_2331dup, rs2143440798) (Version 2026.10.16-c6eea6bf). Retrieved 16 October 2026, from https://dantelabs.com/genes/itga2b/variants/e776-a777dup
Dante Labs. ITGA2B E776_A777dup (c.2326_2331dup, rs2143440798) [Internet]. Version 2026.10.16-c6eea6bf. 16 October 2026 [cited 16 October 2026]. Available from: https://dantelabs.com/genes/itga2b/variants/e776-a777dup
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