Is PHEX p.His690Pro (c.2069A>C) pathogenic?

PHEX p.His690Pro (c.2069A>C) is classified Uncertain significance in PHEX (ClinVar, Single submitter, 1 submitter; last evaluated 2025-11-01). AlphaMissense: likely pathogenic (0.9628); Absent from gnomAD v4.1.

How common is PHEX p.His690Pro (c.2069A>C) in the general population?

PHEX p.His690Pro (c.2069A>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about PHEX p.His690Pro (c.2069A>C)?

AlphaMissense predicts likely pathogenic (score 0.9628) — an in-silico prediction, not a clinical call.

PHEX p.His690Pro

c.2069A>C · VCV4535303

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9628 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9628	likely pathogenic
REVEL	0.779	moderately pathogenic-leaning
SaProt	LLR -12.99	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 2.1, phastCons 1
Regional constraint	o/e 0.83	unconstrained · MANE · 215 kb · p 6.8e-05 · regional, not allelic
Overall
CADD	28.3	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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: PHEX
Protein: p.His690Pro
Coding: c.2069A>C
MANE Select: NM_000444
Type: single nucleotide variant
Location: chrX:22227610 (GRCh38)
Structure: AlphaFold pLDDT 94.58
Residue 690: the peptidase m13 domain

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

Similar variants

PHEX p.His690Asn Conflicting classifications of pathogenicity ★ ⚠ same residue
PHEX p.His690fs Pathogenic ★ same residue
PHEX c.1079+1G>A Pathogenic ★★ same type
PHEX c.1079+2T>G Pathogenic ★★ same type
PHEX c.1080-1G>A Pathogenic ★★ same type
PHEX c.1080-2A>G Pathogenic ★★ same type
PHEX c.1080-3C>G Pathogenic ★★ same type
PHEX c.1173+1G>A 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/phex-p-his690pro (accessed [today's date]).

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