Is PTPRF p.Arg600Cys (c.1798C>T) pathogenic?

PTPRF p.Arg600Cys (c.1798C>T) is classified Uncertain significance in PTPRF (ClinVar, Single submitter, 1 submitter; last evaluated 2025-11-26). AlphaMissense: likely benign (0.1829); Very rare (popmax 0.00338%, amr).

How common is PTPRF p.Arg600Cys (c.1798C>T) in the general population?

PTPRF p.Arg600Cys (c.1798C>T) is very rare (popmax 0.00338%, amr) (gnomAD).

What do computational predictors say about PTPRF p.Arg600Cys (c.1798C>T)?

AlphaMissense predicts likely benign (score 0.1829) — an in-silico prediction, not a clinical call.

PTPRF p.Arg600Cys

c.1798C>T · VCV4573982

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1829 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00338%, amr)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1829	likely benign
REVEL	0.267	benign-leaning
SaProt	LLR -12.90	damaging
⇒ SaProt calls this damaging; AlphaMissense and REVEL do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.9	GERP -1.6, phastCons 1
Regional constraint	o/e 0.87	unconstrained · MANE · 6,728 bp · p 0.011 · regional, not allelic
Overall
CADD	33.0	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00338% Admixed American · 2/59,118 alleles

Filtering AF 0.000561% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000367%

Overall 0.000935% 15/1,604,692 alleles · very rare exomes 15/1,452,410 · genomes 0/152,282 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00338%	29,559
African / African-American	0.00134%	74,876
South Asian	0.00111%	89,852
European (non-Finnish)	0.000935%	106,912

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: PTPRF
Protein: p.Arg600Cys
Coding: c.1798C>T
MANE Select: NM_002840
Type: single nucleotide variant
Location: chr1:43592586 (GRCh38)
Gene constraint: LOEUF 0.348 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 82.43 · 13 PDB
Residue 600: the fibronectin type-iii 3 domain; a β-strand

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

Similar variants

PTPRF p.Gly1143Ser Uncertain significance ★★ ⚠ same type
PTPRF p.His1730Gln Uncertain significance ★★ ⚠ same type
PTPRF c.1531+9G>A Benign/Likely benign ★★ same type
PTPRF c.1668+10G>C Benign/Likely benign ★★ same type
PTPRF c.237+5G>A Benign ★★ same type
PTPRF c.3974-9C>T Benign ★★ same type
PTPRF p.Ala1659= Benign ★★ same type
PTPRF p.Ala356Ser Likely benign ★★ 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/ptprf-p-arg600cys (accessed [today's date]).

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