DSCAM p.Ala1554=
c.4662G>A · rs188171376 · VCV708014
Benign
Single submitter
Classification
Benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
rare (popmax 0.988%, 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 -13 | GERP -4.5 |
| Overall | ||
| CADD | 0.034 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.988%
African / African-American · 742/75,074 alleles
Filtering AF
0.929%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.906%
Overall
0.0729%
1,176/1,614,232 alleles · rare
exomes 681/1,461,884 · genomes 495/152,348 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| African / African-Americangrpmax | 0.988% | 101 |
| Remaining individualsnot grpmax-eligible | 0.101% | 992 |
| Admixed American | 0.085% | 1,177 |
| East Asian | 0.0646% | 1,547 |
| European (non-Finnish) | 0.024% | 4,170 |
| South Asian | 0.00769% | 13,011 |
| Finnishnot grpmax-eligible | 0.00156% | 64,048 |
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
- DSCAM
- Protein
- p.Ala1554=
- Coding
- c.4662G>A
- MANE Select
- NM_001389
- dbSNP
- rs188171376
- Type
- single nucleotide variant
- Location
- chr21:40078736 (GRCh38)
- Gene constraint
- LOEUF 0.28 · pLI 1.00 · ClinGen HI 2/3 (gnomAD)
- Structure
- AlphaFold pLDDT 69.98 · 1 PDB
- Residue 1554
- the fibronectin type-iii 6 domain
Similar variants
- DSCAM p.Ser682Arg Uncertain significance ★★ ⚠ same type
- DSCAM c.5383+9T>A Benign ★★ same type
- DSCAM p.Ala153= Benign ★★ same type
- DSCAM p.Arg1798= Benign/Likely benign ★★ same type
- DSCAM p.Asn1250= Benign ★★ same type
- DSCAM p.Asn576= Benign/Likely benign ★★ same type
- DSCAM p.Asp185= Benign/Likely benign ★★ same type
- DSCAM p.Gln582= Benign ★★ 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/dscam-p-ala1554 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown