Is PKP2 p.Pro4Ser (c.10C>T) pathogenic?

PKP2 p.Pro4Ser (c.10C>T) is classified Uncertain significance in PKP2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-08-29). AlphaMissense: likely benign (0.0782); Very rare (popmax 9.03e-05%, nfe); Associated with arrhythmogenic right ventricular cardiomyopathy.

What condition is associated with PKP2 p.Pro4Ser (c.10C>T)?

PKP2 p.Pro4Ser (c.10C>T) is associated with arrhythmogenic right ventricular cardiomyopathy, cardiomyopathy (ClinVar).

How common is PKP2 p.Pro4Ser (c.10C>T) in the general population?

PKP2 p.Pro4Ser (c.10C>T) is very rare (popmax 9.03e-05%, nfe) (gnomAD).

What do computational predictors say about PKP2 p.Pro4Ser (c.10C>T)?

AlphaMissense predicts likely benign (score 0.0782) — an in-silico prediction, not a clinical call.

PKP2 p.Pro4Ser

c.10C>T · rs1425675043 · VCV1331927

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.0782 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 9.03e-05%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

arrhythmogenic right ventricular cardiomyopathy

Computational evidence

Protein change
AlphaMissense	0.0782	likely benign
REVEL	0.082	moderately benign-leaning
SaProt	LLR -6.19	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 3.1	phastCons 1
Regional constraint	o/e 0.91	unconstrained · MANE · 104 kb · p 0.0023 · regional, not allelic
Overall
CADD	14.75	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 9.03e-05% European (non-Finnish) · 1/1,107,134 alleles

Overall 0.000658% 1/152,084 alleles · very rare

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: PKP2
Protein: p.Pro4Ser
Coding: c.10C>T
MANE Select: NM_001005242
dbSNP: rs1425675043
Type: single nucleotide variant
Location: chr12:32896722 (GRCh38)
Gene constraint: LOEUF 1.105 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 64.32 · 1 PDB
Residue 4: the 'required for interaction with influenza a virus rna polymerase subunit pb1' region; the 'required for binding to single-stranded dna' region

Full PKP2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

arrhythmogenic right ventricular cardiomyopathy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: cardiomyopathy

Similar variants

PKP2 p.Pro4Leu Uncertain significance ★★ ⚠ same residue
PKP2 p.Pro4= Likely benign ★★ same residue
PKP2 p.Pro4_Gly5insThrGlyProMetAlaAlaPro Uncertain significance ★★ same residue
PKP2 p.Pro4Thr Uncertain significance ★ ⚠ same residue
PKP2 c.1034+1G>C Likely pathogenic ★★ same condition
PKP2 c.1034+1G>T Likely pathogenic ★★ same condition
PKP2 c.1170+1G>A Pathogenic/Likely pathogenic ★★ same condition
PKP2 c.1170+2T>A Pathogenic/Likely 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/pkp2-p-pro4ser (accessed [today's date]).

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