Is BAG3 p.Ala176= (c.528C>T) pathogenic?

BAG3 p.Ala176= (c.528C>T) is classified Likely benign in BAG3 (ClinVar, Single submitter, 3 submitters; last evaluated 2025-06-18). Very rare (popmax 0.000678%, nfe); Associated with myofibrillar myopathy 6.

What condition is associated with BAG3 p.Ala176= (c.528C>T)?

BAG3 p.Ala176= (c.528C>T) is associated with myofibrillar myopathy 6, dilated cardiomyopathy 1HH (ClinVar).

How common is BAG3 p.Ala176= (c.528C>T) in the general population?

BAG3 p.Ala176= (c.528C>T) is very rare (popmax 0.000678%, nfe) (gnomAD).

How is BAG3-related myofibrillar myopathy inherited?

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

BAG3 p.Ala176=

c.528C>T · rs796123466 · VCV1123700

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

very rare (popmax 0.000678%, nfe)

Conditions

myofibrillar myopathy 6

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 0.37	GERP -0.81, phastCons 0.99
Overall
CADD	7.517	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000678% European (non-Finnish) · 8/1,180,038 alleles

Filtering AF 0.000292% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000211%

Overall 0.000547% 8/1,461,408 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: BAG3
Protein: p.Ala176=
Coding: c.528C>T
MANE Select: NM_004281
dbSNP: rs796123466
Type: single nucleotide variant
Location: chr10:119672275 (GRCh38)
Gene constraint: LOEUF 0.538 · pLI 0.92 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 57.98
Residue 176: the 'disordered' region

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

Disease context

myofibrillar myopathy 6 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: dilated cardiomyopathy 1HH

For BAG3-related myofibrillar myopathy (Orphanet):

Inheritance: Autosomal dominant
Onset: Adolescent, Childhood

Similar variants

BAG3 p.Ala176_Ser177insTer Pathogenic ★ 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
BAG3 p.Gln135Ter 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-ala176 (accessed [today's date]).

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