Is FPR1 p.Ile28= (c.84C>T) pathogenic?

FPR1 p.Ile28= (c.84C>T) is classified Likely benign in FPR1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-04-10). Ultra-rare (popmax 0.0533%, afr); Associated with gingival disorder.

What condition is associated with FPR1 p.Ile28= (c.84C>T)?

FPR1 p.Ile28= (c.84C>T) is associated with gingival disorder (ClinVar).

How common is FPR1 p.Ile28= (c.84C>T) in the general population?

FPR1 p.Ile28= (c.84C>T) is ultra-rare (popmax 0.0533%, afr) (gnomAD).

FPR1 p.Ile28=

c.84C>T · rs143690932 · VCV1090094

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

ultra-rare (popmax 0.0533%, afr)

Conditions

gingival 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
Conservation	phyloP 1	GERP 0.72, phastCons 0.019
Overall
CADD	2.786	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0533% African / African-American · 40/75,022 alleles

Filtering AF 0.0402% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0356%

Overall 0.00279% 45/1,614,162 alleles · ultra-rare exomes 22/1,461,886 · genomes 23/152,276 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0533%	1,876
Remaining individualsnot grpmax-eligible	0.0064%	15,627
South Asian	0.0011%	91,078

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: FPR1
Protein: p.Ile28=
Coding: c.84C>T
MANE Select: NM_002029
dbSNP: rs143690932
Type: single nucleotide variant
Location: chr19:51746911 (GRCh38)
Gene constraint: LOEUF 1.921 · pLI 0.13 (gnomAD)
Structure: AlphaFold pLDDT 84.17 · 5 PDB
Residue 28: an α-helix

Full FPR1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

gingival disorder — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

FPR1 p.Ala225Val Uncertain significance ★★ ⚠ same condition
FPR1 p.Ala315Thr Uncertain significance ★★ ⚠ same condition
FPR1 p.Ile146Val Uncertain significance ★★ ⚠ same condition
FPR1 p.Ile147Thr Uncertain significance ★★ ⚠ same condition
FPR1 p.Ile216Val Uncertain significance ★★ ⚠ same condition
FPR1 p.Ile228Phe Uncertain significance ★★ ⚠ same condition
FPR1 p.Met197Ile Uncertain significance ★★ ⚠ same condition
FPR1 p.Met275Thr Uncertain significance ★★ ⚠ same condition

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/fpr1-p-ile28 (accessed [today's date]).

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