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YY1AP1 p.Pro128=

c.384G>A · rs367625562 · VCV2752448

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0267%, amr)

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 -5.1GERP -3.7
Overall
CADD3.824PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.0267% Admixed American · 16/59,968 alleles
Filtering AF 0.0166% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0136%
Overall 0.00403% 65/1,613,368 alleles · ultra-rare exomes 58/1,461,332 · genomes 7/152,036 · joint denominator
Ancestry group Frequency 1 in
Admixed Americangrpmax 0.0267% 3,748
South Asian 0.00769% 13,010
European (non-Finnish) 0.00331% 30,248
Remaining individualsnot grpmax-eligible 0.0032% 31,227
African / African-American 0.00134% 74,816

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
YY1AP1
Protein
p.Pro128=
Coding
c.384G>A
MANE Select
NM_139119
dbSNP
rs367625562
Type
single nucleotide variant
Location
chr1:155675037 (GRCh38)
Gene constraint
LOEUF 1.319 · pLI <0.01 (gnomAD)
Structure
AlphaFold pLDDT 54.58
Full YY1AP1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

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/yy1ap1-p-pro128 (accessed [today's date]).

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