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SOX9 p.Pro346=

c.1038G>A · VCV4685859

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
very rare (popmax 0.00706%, sas)

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 -0.13GERP -2.7
Overall
CADD6.383PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.00706% South Asian · 5/70,828 alleles
Filtering AF 0.00276% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0018%
Overall 0.00143% 21/1,464,272 alleles · very rare exomes 20/1,313,134 · genomes 1/151,138 · joint denominator
Ancestry group Frequency 1 in
South Asiangrpmax 0.00706% 14,166
European (non-Finnish) 0.00144% 69,410

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
SOX9
Protein
p.Pro346=
Coding
c.1038G>A
MANE Select
NM_000346
Type
single nucleotide variant
Location
chr17:72123895 (GRCh38)
Gene constraint
LOEUF 0.154 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure
AlphaFold pLDDT 56.69 · 1 PDB
Residue 346
a UniProt-annotated variant site (in cmd1); the 'disordered' region
Full SOX9 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/sox9-p-pro346 (accessed [today's date]).

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