Is LDB3 p.Pro140Ala (c.418C>G) pathogenic?

LDB3 p.Pro140Ala (c.418C>G) is classified Conflicting classifications of pathogenicity in LDB3 (ClinVar, Conflicting submitters, 2 submitters; last evaluated 2022-03-04). AlphaMissense: likely benign (0.0577); Absent from gnomAD v4.1; Associated with Cardiovascular phenotype.

What condition is associated with LDB3 p.Pro140Ala (c.418C>G)?

LDB3 p.Pro140Ala (c.418C>G) is associated with Cardiovascular phenotype, myofibrillar myopathy 4 (ClinVar).

How common is LDB3 p.Pro140Ala (c.418C>G) in the general population?

LDB3 p.Pro140Ala (c.418C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about LDB3 p.Pro140Ala (c.418C>G)?

AlphaMissense predicts likely benign (score 0.0577) — an in-silico prediction, not a clinical call.

LDB3 p.Pro140Ala

c.418C>G · rs762234555 · VCV1738557

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.0577 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
AlphaMissense	0.0577	likely benign
REVEL	0.016	strongly benign-leaning
SaProt	LLR -7.33	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 3.5	GERP -1.4, phastCons 1
Regional constraint	o/e 0.95	unconstrained · MANE · 64 kb · p 0.14 · regional, not allelic
Overall
CADD	13.86	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

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: LDB3
Protein: p.Pro140Ala
Coding: c.418C>G
MANE Select: NM_007078
dbSNP: rs762234555
Type: single nucleotide variant
Location: chr10:86681532 (GRCh38)
Gene constraint: LOEUF 0.864 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 61.98 · 2 PDB
Residue 140: the 'disordered' region

Full LDB3 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

Also linked: myofibrillar myopathy 4

Similar variants

LDB3 p.Val140Met Uncertain significance ★★ same residue
LDB3 p.Val140= Likely benign ★ same residue
LDB3 p.Ala147Thr Pathogenic/Likely pathogenic ★★ same condition
LDB3 p.Ala165Val Pathogenic/Likely pathogenic ★★ same condition
LDB3 c.1231+4A>C Uncertain significance ★★ same condition
LDB3 c.1858-11C>A Uncertain significance ★★ same condition
LDB3 c.246-3C>T Uncertain significance ★★ same condition
LDB3 c.322-1G>A 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/ldb3-p-pro140ala (accessed [today's date]).

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