Is IFNAR2 p.Pro330= (c.990C>T) pathogenic?

IFNAR2 p.Pro330= (c.990C>T) is classified Likely benign in IFNAR2 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-04-25). Very rare (popmax 0.00666%, amr).

How common is IFNAR2 p.Pro330= (c.990C>T) in the general population?

IFNAR2 p.Pro330= (c.990C>T) is very rare (popmax 0.00666%, amr) (gnomAD).

IFNAR2 p.Pro330=

c.990C>T · rs964903173 · VCV1619476

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00666%, 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
Conservation	phyloP -0.72	GERP -3.9
Overall
CADD	1.032	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00666% Admixed American · 4/60,026 alleles

Filtering AF 0.00225% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00135%

Overall 0.00031% 5/1,614,152 alleles · very rare exomes 5/1,461,864 · genomes 0/152,288 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00666%	15,006
Remaining individualsnot grpmax-eligible	0.0016%	62,506

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: IFNAR2
Protein: p.Pro330=
Coding: c.990C>T
MANE Select: NM_001289125
dbSNP: rs964903173
Type: single nucleotide variant
Location: chr21:33262942 (GRCh38)
Gene constraint: LOEUF 0.761 · pLI 0.01 (gnomAD)
Structure: AlphaFold pLDDT 64.86 · 9 PDB
Residue 330: the 'disordered' region

Full IFNAR2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

IFNAR2 c.840+1G>T Uncertain significance ★★ same type
IFNAR2 p.Arg397Gly Uncertain significance ★★ ⚠ same type
IFNAR2 p.Arg90Gly Uncertain significance ★★ ⚠ same type
IFNAR2 p.Asn146Ser Uncertain significance ★★ ⚠ same type
IFNAR2 p.Asn281Tyr Uncertain significance ★★ ⚠ same type
IFNAR2 p.Asp198Gly Uncertain significance ★★ ⚠ same type
IFNAR2 p.Asp437Gly Uncertain significance ★★ ⚠ same type
IFNAR2 p.Glu184Lys Uncertain significance ★★ ⚠ 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/ifnar2-p-pro330 (accessed [today's date]).

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