Is BAG3 p.Ala186Pro (c.556G>C) pathogenic?

BAG3 p.Ala186Pro (c.556G>C) is classified Uncertain significance in BAG3 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-07-05). AlphaMissense: likely benign (0.1026); Absent from gnomAD v4.1; Associated with dilated cardiomyopathy 1HH.

What condition is associated with BAG3 p.Ala186Pro (c.556G>C)?

BAG3 p.Ala186Pro (c.556G>C) is associated with dilated cardiomyopathy 1HH, myofibrillar myopathy 6 (ClinVar).

How common is BAG3 p.Ala186Pro (c.556G>C) in the general population?

BAG3 p.Ala186Pro (c.556G>C) is absent from gnomAD v4.1 (gnomAD).

How is Familial isolated dilated cardiomyopathy inherited?

Typically Autosomal dominant, Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about BAG3 p.Ala186Pro (c.556G>C)?

AlphaMissense predicts likely benign (score 0.1026) — an in-silico prediction, not a clinical call.

BAG3 p.Ala186Pro

c.556G>C · rs2134064990 · VCV1404506

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1026 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

dilated cardiomyopathy 1HH

Computational evidence

Protein change
AlphaMissense	0.1026	likely benign
REVEL	0.105	moderately benign-leaning
SaProt	LLR -7.13	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	Δ0.22	acceptor gain · deltas
Constraint at this position
Conservation	phyloP 6	GERP 1.4, phastCons 1
Regional constraint	o/e 1.04	unconstrained · MANE · 26 kb · p 0.29 · regional, not allelic
Overall
CADD	21.2	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

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: BAG3
Protein: p.Ala186Pro
Coding: c.556G>C
MANE Select: NM_004281
dbSNP: rs2134064990
Type: single nucleotide variant
Location: chr10:119672303 (GRCh38)
Gene constraint: LOEUF 0.538 · pLI 0.92 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 57.98
Residue 186: the 'disordered' region

Full BAG3 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

dilated cardiomyopathy 1HH — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: myofibrillar myopathy 6

For Familial isolated dilated cardiomyopathy (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive, Mitochondrial inheritance
Onset: All ages
Prevalence: 1-9 / 100 000 (Europe)

Similar variants

BAG3 p.Ala186Val Uncertain significance ★★ ⚠ same residue
BAG3 p.Ala186Gly Uncertain significance ★ ⚠ same residue
BAG3 p.Arg121Ter Pathogenic/Likely pathogenic ★★ same condition
BAG3 p.Arg123Ter Pathogenic/Likely pathogenic ★★ same condition
BAG3 p.Arg309Ter Pathogenic ★★ same condition
BAG3 p.Arg473Ter Pathogenic/Likely pathogenic ★★ same condition
BAG3 p.Arg90Ter Pathogenic ★★ same condition
BAG3 p.Gln132Ter 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/bag3-p-ala186pro (accessed [today's date]).

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