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APBA2 p.Ser73=

c.219C>T · rs151295064 · VCV3051142

Likely benign No assertion criteria
Classification
Likely benign
ClinVar
Review
No assertion criteria ☆☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.099%, nfe)
Conditions
1
APBA2-related disorder

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
ConservationphyloP 1.4GERP 0.43, phastCons 1
Overall
CADD9.548PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.099% European (non-Finnish) · 1,168/1,180,046 alleles
Filtering AF 0.0943% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0923%
Overall 0.0748% 1,207/1,614,054 alleles · ultra-rare
Ancestry group Frequency 1 in
European (non-Finnish)grpmax 0.099% 1,010
Remaining individualsnot grpmax-eligible 0.0464% 2,154
Middle Eastern 0.0165% 6,052
African / African-American 0.012% 8,328

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
APBA2
Protein
p.Ser73=
Coding
c.219C>T
MANE Select
NM_001353788
dbSNP
rs151295064
Type
single nucleotide variant
Location
chr15:29054103 (GRCh38)
Gene constraint
LOEUF 0.524 · pLI 0.78 (gnomAD)
Structure
AlphaFold pLDDT 59.74
Residue 73
the 'disordered' region
Full APBA2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

APBA2-related disorder

Similar variants

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/apba2-p-ser73 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown