Is YTHDF1 p.Gly342Arg (c.1024G>A) pathogenic?

YTHDF1 p.Gly342Arg (c.1024G>A) is classified Uncertain significance in YTHDF1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-27). AlphaMissense: likely benign (0.2303); Ultra-rare (popmax 0.0165%, mid).

How common is YTHDF1 p.Gly342Arg (c.1024G>A) in the general population?

YTHDF1 p.Gly342Arg (c.1024G>A) is ultra-rare (popmax 0.0165%, mid) (gnomAD).

What do computational predictors say about YTHDF1 p.Gly342Arg (c.1024G>A)?

AlphaMissense predicts likely benign (score 0.2303) — an in-silico prediction, not a clinical call.

YTHDF1 p.Gly342Arg

c.1024G>A · VCV4203358

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2303 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0165%, mid)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.2303	likely benign
REVEL	0.021	moderately benign-leaning
SaProt	LLR -8.13	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 0.9	GERP -2.7, phastCons 0.001
Regional constraint	o/e 0.95	unconstrained · MANE · 13 kb · p 0.25 · regional, not allelic
Overall
CADD	19.2	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 0.0165% Middle Eastern · 1/6,060 alleles

Filtering AF 0.00143% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000891%

Overall 0.00112% 18/1,614,076 alleles · ultra-rare exomes 15/1,461,702 · genomes 3/152,374 · joint denominator

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0165%	6,060
Finnishnot grpmax-eligible	0.0094%	10,642
South Asian	0.00439%	22,771
Remaining individualsnot grpmax-eligible	0.0016%	62,510
African / African-American	0.00133%	75,084
European (non-Finnish)	0.000424%	236,009

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: YTHDF1
Protein: p.Gly342Arg
Coding: c.1024G>A
MANE Select: NM_017798
Type: single nucleotide variant
Location: chr20:63202916 (GRCh38)
Gene constraint: LOEUF 0.515 · pLI 0.96 (gnomAD)
Structure: AlphaFold pLDDT 62.83 · 10 PDB
Residue 342: the 'disordered' region

Full YTHDF1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

YTHDF1 p.Asn497= Benign ★★ same type
YTHDF1 p.His375Tyr Benign ★★ same type
YTHDF1 p.Lys473= Benign ★★ same type
YTHDF1 p.Ser145= Benign ★★ same type
YTHDF1 p.Ser252= Benign ★★ same type
YTHDF1 p.Val195= Benign ★★ same type
YTHDF1 p.Ala146Thr Uncertain significance ★ ⚠ same type
YTHDF1 p.Ala199Ser 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/ythdf1-p-gly342arg (accessed [today's date]).

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