Is PTEN p.Pro30= (c.90A>G) pathogenic?

PTEN p.Pro30= (c.90A>G) is classified Benign in PTEN (ClinVar, Single submitter, 1 submitter; last evaluated 2025-02-11). Absent from gnomAD v4.1; Associated with Cowden syndrome 1.

What condition is associated with PTEN p.Pro30= (c.90A>G)?

PTEN p.Pro30= (c.90A>G) is associated with Cowden syndrome 1 (ClinVar).

How common is PTEN p.Pro30= (c.90A>G) in the general population?

PTEN p.Pro30= (c.90A>G) is absent from gnomAD v4.1 (gnomAD).

PTEN p.Pro30=

c.90A>G · VCV3903666

Benign Single submitter

Classification

Benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

Cowden syndrome 1

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal.
Splicing
SpliceAI	Δ0.48	acceptor gain · deltas
Constraint at this position
Conservation	phyloP 4.3	GERP 1.5, phastCons 1
Overall
CADD	20.0	PHRED · no single calibrated threshold — expert panels disagree

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: PTEN
Protein: p.Pro30=
Coding: c.90A>G
MANE Select: NM_000314
Type: single nucleotide variant
Location: chr10:87894035 (GRCh38)
Gene constraint: LOEUF 0.685 · pLI 0.05 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 83.76 · 12 PDB
Residue 30: the phosphatase tensin-type domain

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

Disease context

Cowden syndrome 1 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

PTEN p.Pro30fs Pathogenic ★ same residue
PTEN p.Pro30Ala Uncertain significance ★★ ⚠ same residue
PTEN p.Pro30Arg Uncertain significance ★★ ⚠ same residue
PTEN p.Pro30Leu Uncertain significance ★★ ⚠ same residue
PTEN p.Pro30Ser Uncertain significance ★ ⚠ same residue
PTEN p.Pro30Thr Uncertain significance ★ ⚠ same residue
PTEN c.1026+1G>A Pathogenic ★★★ same condition
PTEN c.1027-1G>A 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/pten-p-pro30 (accessed [today's date]).

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