Is CFAP45 p.Arg279Gln (c.836G>A) pathogenic?

CFAP45 p.Arg279Gln (c.836G>A) is classified Uncertain significance in CFAP45 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-03-09). AlphaMissense: likely benign (0.0748); Ultra-rare (popmax 0.0164%, mid).

How common is CFAP45 p.Arg279Gln (c.836G>A) in the general population?

CFAP45 p.Arg279Gln (c.836G>A) is ultra-rare (popmax 0.0164%, mid) (gnomAD).

What do computational predictors say about CFAP45 p.Arg279Gln (c.836G>A)?

AlphaMissense predicts likely benign (score 0.0748) — an in-silico prediction, not a clinical call.

CFAP45 p.Arg279Gln

c.836G>A · rs767864203 · VCV2208183

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0748 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0164%, mid)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0748	likely benign
REVEL	0.035	moderately benign-leaning
SaProt	LLR -7.62	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.6	GERP 0.049, phastCons 0.9
Regional constraint	o/e 0.98	unconstrained · MANE · 28 kb · p 0.64 · regional, not allelic
Overall
CADD	19.88	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0164% Middle Eastern · 1/6,084 alleles

Filtering AF 0.00138% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00116%

Overall 0.00223% 36/1,613,796 alleles · ultra-rare

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0164%	6,084
Remaining individualsnot grpmax-eligible	0.0112%	8,925
Admixed American	0.005%	19,995
European (non-Finnish)	0.00203%	49,164
Finnishnot grpmax-eligible	0.00156%	64,006

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: CFAP45
Protein: p.Arg279Gln
Coding: c.836G>A
MANE Select: NM_012337
dbSNP: rs767864203
Type: single nucleotide variant
Location: chr1:159884497 (GRCh38)
Gene constraint: LOEUF 0.713 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 77.03 · 2 PDB
Residue 279: the trichohyalin-plectin-homology domain; a UniProt-annotated variant site (in htx11; loss of panaxonemal expression in respiratory cilia and in sperm flagella)

Full CFAP45 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CFAP45 p.Asp320Tyr Uncertain significance ★★ ⚠ same type
CFAP45 p.Lys518Glu Uncertain significance ★★ ⚠ same type
CFAP45 p.Asp222Gly Benign ★★ ⚠ same type
CFAP45 p.Arg350Ter Likely pathogenic ★ same type
CFAP45 p.Ala15Pro Uncertain significance ★ ⚠ same type
CFAP45 p.Ala370Pro Uncertain significance ★ ⚠ same type
CFAP45 p.Ala436Val Uncertain significance ★ ⚠ same type
CFAP45 p.Ala69Thr 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/cfap45-p-arg279gln (accessed [today's date]).

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