Is DSG2 p.Ser883Pro (c.2647T>C) pathogenic?

DSG2 p.Ser883Pro (c.2647T>C) is classified Benign/Likely benign in DSG2 (ClinVar, Multiple submitters, 19 submitters; last evaluated 2026-03-01). AlphaMissense: likely benign (0.0745); Low-frequency (popmax 2.13%, afr); Associated with restrictive cardiomyopathy.

What condition is associated with DSG2 p.Ser883Pro (c.2647T>C)?

DSG2 p.Ser883Pro (c.2647T>C) is associated with restrictive cardiomyopathy, cardiomyopathy, arrhythmogenic right ventricular dysplasia 10 (ClinVar).

How common is DSG2 p.Ser883Pro (c.2647T>C) in the general population?

DSG2 p.Ser883Pro (c.2647T>C) is low-frequency (popmax 2.13%, afr) (gnomAD).

What do computational predictors say about DSG2 p.Ser883Pro (c.2647T>C)?

AlphaMissense predicts likely benign (score 0.0745) — an in-silico prediction, not a clinical call.

DSG2 p.Ser883Pro

c.2647T>C · rs34417028 · VCV36011

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 19 submitters

AlphaMissense

likely benign

0.0745 · ACMG-weighted

gnomAD v4.1

Rare

low-frequency (popmax 2.13%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

restrictive cardiomyopathy

Computational evidence

Protein change
AlphaMissense	0.0745	likely benign
REVEL	0.033	moderately benign-leaning
SaProt	LLR -8.09	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 0.024
Regional constraint	o/e 0.93	unconstrained · MANE · 48 kb · p 0.014 · regional, not allelic
Overall
CADD	13.4	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 2.13% African / African-American · 1,597/75,028 alleles

Filtering AF 2.04% ClinGen BA1/BS1 input FAF95, joint · FAF99 2.01%

Overall 0.115% 1,856/1,614,156 alleles · low-frequency

Ancestry group	Frequency	1 in
African / African-Americangrpmax	2.13%	47
Middle Eastern	0.247%	404
Admixed American	0.16%	625
Remaining individualsnot grpmax-eligible	0.138%	727
South Asian	0.00659%	15,181
European (non-Finnish)	0.00475%	21,072

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: DSG2
Protein: p.Ser883Pro
Coding: c.2647T>C
MANE Select: NM_001943
dbSNP: rs34417028
Type: single nucleotide variant
Location: chr18:31546033 (GRCh38)
Gene constraint: LOEUF 0.764 · pLI <0.01 · ClinGen HI 2/3 (gnomAD)
Structure: AlphaFold pLDDT 65.27 · 12 PDB
Residue 883: a UniProt-annotated variant site (in arvd10; uncertain significance; evidence of residual myocardium, fibrous tissue, fatty tissue, dysmetric and dysmorphic nuclei and prominent cytoplasmic vacuolization; decreases the number of desmosomes at intercalated disks also increases desmosome gap; smaller intercellular gaps, with repeating couplings, abnormally located desmosomes and pale internal plaques); a UniProt-annotated variant site (in arvd10; uncertain significance)

Full DSG2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

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

Also linked: cardiomyopathy arrhythmogenic right ventricular dysplasia 10 dilated cardiomyopathy 1BB arrhythmogenic right ventricular cardiomyopathy

Similar variants

DSG2 p.Ser883Cys Uncertain significance ★ ⚠ same residue
DSG2 p.Ser883Phe Conflicting classifications of pathogenicity ★ ⚠ same residue
DSG2 c.1423+1G>T Likely pathogenic ★★ same condition
DSG2 c.1424-1G>A Likely pathogenic ★★ same condition
DSG2 c.523+1G>T Pathogenic/Likely pathogenic ★★ same condition
DSG2 c.690+1G>A Pathogenic ★★ same condition
DSG2 c.81+1G>T Likely pathogenic ★★ same condition
DSG2 c.829-2A>T 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/dsg2-p-ser883pro (accessed [today's date]).

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