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TFRC p.Pro333=

c.999T>C · rs751570820 · VCV2955587

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0401%, eas)

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 0.95GERP -3.7, phastCons 0.98
Overall
CADD5.14PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.0401% East Asian · 18/44,886 alleles
Filtering AF 0.0259% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0213%
Overall 0.00112% 18/1,614,176 alleles · ultra-rare exomes 18/1,461,842 · genomes 0/152,334 · joint denominator

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
TFRC
Protein
p.Pro333=
Coding
c.999T>C
MANE Select
NM_001128148
dbSNP
rs751570820
Type
single nucleotide variant
Location
chr3:196067559 (GRCh38)
Gene constraint
LOEUF 0.489 · pLI 0.98 (gnomAD)
Structure
AlphaFold pLDDT 86.87 · 24 PDB
Full TFRC 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/tfrc-p-pro333 (accessed [today's date]).

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