Is CSF1R p.Met181Arg (c.542T>G) pathogenic?

CSF1R p.Met181Arg (c.542T>G) is classified Uncertain significance in CSF1R (ClinVar, Single submitter, 1 submitter; last evaluated 2022-06-13). AlphaMissense: likely benign (0.0694); Absent from gnomAD v4.1.

How common is CSF1R p.Met181Arg (c.542T>G) in the general population?

CSF1R p.Met181Arg (c.542T>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CSF1R p.Met181Arg (c.542T>G)?

AlphaMissense predicts likely benign (score 0.0694) — an in-silico prediction, not a clinical call.

CSF1R p.Met181Arg

c.542T>G · rs2481045446 · VCV2119067

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0694 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0694	likely benign
REVEL	0.164	moderately benign-leaning
SaProt	LLR -7.96	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 6.9	GERP 1.5, phastCons 0.98
Regional constraint	o/e 0.94	unconstrained · MANE · 25 kb · p 0.12 · regional, not allelic
Overall
CADD	21.0	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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: CSF1R
Protein: p.Met181Arg
Coding: c.542T>G
MANE Select: NM_001288705
dbSNP: rs2481045446
Type: single nucleotide variant
Location: chr5:150080102 (GRCh38)
Gene constraint: LOEUF 0.485 · pLI 0.98 (gnomAD)
Structure: AlphaFold pLDDT 78.08 · 26 PDB
Residue 181: a β-strand; the ig-like c2-type 2 domain

Full CSF1R gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CSF1R p.Met181Thr Uncertain significance ★ ⚠ same residue
CSF1R p.Ala780Val Likely pathogenic ★★ same type
CSF1R p.Ala781Val Pathogenic ★★ same type
CSF1R p.Arg676Ter Pathogenic ★★ same type
CSF1R p.Arg777Gln Pathogenic ★★ same type
CSF1R p.Arg777Trp Pathogenic/Likely pathogenic ★★ same type
CSF1R p.Arg782Cys Pathogenic/Likely pathogenic ★★ same type
CSF1R p.Arg782His Pathogenic/Likely pathogenic ★★ 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/csf1r-p-met181arg (accessed [today's date]).

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