BLK p.Lys27=
c.81G>A · rs149279535 · VCV1219894
Conflicting classifications of pathogenicity
Conflicting submitters
Classification
Conflicting classifications of pathogenicity
ClinVar
Review
Conflicting submitters ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
rare (popmax 0.747%, afr)
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
|---|---|---|
| Constraint at this position | ||
| Conservation | phyloP 2.3 | GERP -0.33, phastCons 1 |
| Overall | ||
| CADD | 1.572 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.747%
African / African-American · 560/75,014 alleles
Filtering AF
0.695%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.675%
Overall
0.0384%
619/1,613,680 alleles · rare
exomes 326/1,461,446 · genomes 293/152,234 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.747% | 134 |
| Admixed American | 0.0383% | 2,610 |
| Remaining individualsnot grpmax-eligible | 0.0368% | 2,718 |
| South Asian | 0.0011% | 91,072 |
| European (non-Finnish) | 0.00102% | 98,334 |
Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.
Variant & gene context
- Gene
- BLK
- Protein
- p.Lys27=
- Coding
- c.81G>A
- MANE Select
- NM_001715
- dbSNP
- rs149279535
- Type
- single nucleotide variant
- Location
- chr8:11543305 (GRCh38)
- Gene constraint
- LOEUF 1.295 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 81.89
- Residue 27
- the 'disordered' region
Similar variants
- BLK p.Arg131Gln Uncertain significance ★★ ⚠ same type
- BLK p.Arg180His Uncertain significance ★★ ⚠ same type
- BLK p.Arg238Trp Uncertain significance ★★ ⚠ same type
- BLK p.Arg295Trp Uncertain significance ★★ same type
- BLK p.Arg298Gln Uncertain significance ★★ ⚠ same type
- BLK p.Arg466His Uncertain significance ★★ ⚠ same type
- BLK p.Asp68Val Uncertain significance ★★ same type
- BLK p.Gln226Pro Uncertain significance ★★ ⚠ same type
Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →
Cite Sugi Variant
Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/blk-p-lys27 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown