Is JPH2 p.Tyr341= (c.1023C>T) pathogenic?

JPH2 p.Tyr341= (c.1023C>T) is classified Likely benign in JPH2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-07-29). Absent from gnomAD v4.1; Associated with Cardiovascular phenotype.

What condition is associated with JPH2 p.Tyr341= (c.1023C>T)?

JPH2 p.Tyr341= (c.1023C>T) is associated with Cardiovascular phenotype (ClinVar).

How common is JPH2 p.Tyr341= (c.1023C>T) in the general population?

JPH2 p.Tyr341= (c.1023C>T) is absent from gnomAD v4.1 (gnomAD).

JPH2 p.Tyr341=

c.1023C>T · VCV4089448

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.4	GERP 0.89, phastCons 1
Overall
CADD	7.285	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: JPH2
Protein: p.Tyr341=
Coding: c.1023C>T
MANE Select: NM_020433
Type: single nucleotide variant
Location: chr20:44159764 (GRCh38)
Gene constraint: LOEUF 1.051 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 65.09 · 2 PDB
Residue 341: a β-strand

Full JPH2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Cardiovascular phenotype — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

JPH2 p.Tyr341Cys Uncertain significance ★★ ⚠ same residue
JPH2 c.-4T>A Uncertain significance ★★ same condition
JPH2 p.Ala214Glu Uncertain significance ★★ ⚠ same condition
JPH2 p.Ala23Thr Uncertain significance ★★ ⚠ same condition
JPH2 p.Ala23Val Uncertain significance ★★ ⚠ same condition
JPH2 p.Ala394Thr Uncertain significance ★★ ⚠ same condition
JPH2 p.Ala401Val Uncertain significance ★★ ⚠ same condition
JPH2 p.Ala419Ser Uncertain significance ★★ ⚠ 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/jph2-p-tyr341 (accessed [today's date]).

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