Is RAF1 p.Asn552= (c.1656C>T) pathogenic?

RAF1 p.Asn552= (c.1656C>T) is classified Likely benign in RAF1 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2025-09-02). Ultra-rare (popmax 0.0111%, eas); Associated with RASopathy.

What condition is associated with RAF1 p.Asn552= (c.1656C>T)?

RAF1 p.Asn552= (c.1656C>T) is associated with RASopathy (ClinVar).

How common is RAF1 p.Asn552= (c.1656C>T) in the general population?

RAF1 p.Asn552= (c.1656C>T) is ultra-rare (popmax 0.0111%, eas) (gnomAD).

RAF1 p.Asn552=

c.1656C>T · rs772194284 · VCV496187

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0111%, eas)

Conditions

RASopathy

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 3.5	GERP -0.22, phastCons 1
Overall
CADD	8.52	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0111% East Asian · 5/44,890 alleles

Filtering AF 0.00434% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00276%

Overall 0.000434% 7/1,614,194 alleles · ultra-rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.0111%	8,978
Remaining individualsnot grpmax-eligible	0.0032%	31,256

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: RAF1
Protein: p.Asn552=
Coding: c.1656C>T
MANE Select: NM_002880
dbSNP: rs772194284
Type: single nucleotide variant
Location: chr3:12585134 (GRCh38)
Gene constraint: LOEUF 0.353 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 68.24 · 76 PDB
Residue 552: the protein kinase domain

Full RAF1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

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

Similar variants

RAF1 p.Asn552Lys Uncertain significance ★★ same residue
RAF1 p.Asn552Ser Uncertain significance ★★ ⚠ same residue
RAF1 p.Asn552Thr Uncertain significance ★ ⚠ same residue
RAF1 p.Arg256Ser Likely pathogenic ★★★ ⚠ same condition
RAF1 p.Gly361Ala Pathogenic ★★★ ⚠ same condition
RAF1 p.Leu613Val Pathogenic ★★★ same condition
RAF1 p.Pro261Ser Pathogenic ★★★ ⚠ same condition
RAF1 p.Ser257Leu Pathogenic ★★★ ⚠ 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/raf1-p-asn552 (accessed [today's date]).

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