Is PLEC p.Asp547Val (c.1640A>T) pathogenic?

PLEC p.Asp547Val (c.1640A>T) is classified Uncertain significance in PLEC (ClinVar, Single submitter, 1 submitter; last evaluated 2022-02-25). AlphaMissense: likely pathogenic (0.9001); Very rare (popmax 0.0022%, sas); Associated with epidermolysis bullosa simplex 5B, with muscular dystrophy.

What condition is associated with PLEC p.Asp547Val (c.1640A>T)?

PLEC p.Asp547Val (c.1640A>T) is associated with epidermolysis bullosa simplex 5B, with muscular dystrophy, epidermolysis bullosa simplex 5A, Ogna type, epidermolysis bullosa simplex 5C, with pyloric atresia (ClinVar).

How common is PLEC p.Asp547Val (c.1640A>T) in the general population?

PLEC p.Asp547Val (c.1640A>T) is very rare (popmax 0.0022%, sas) (gnomAD).

What do computational predictors say about PLEC p.Asp547Val (c.1640A>T)?

AlphaMissense predicts likely pathogenic (score 0.9001) — an in-silico prediction, not a clinical call.

PLEC p.Asp547Val

Q: How is Epidermolysis bullosa simplex with muscular dystrophy inherited?

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

c.1640A>T · rs782141346 · VCV2074017

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9001 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.0022%, sas)

Conditions

epidermolysis bullosa simplex 5B, with muscular dystrophy

Computational evidence

Protein change
AlphaMissense	0.9001	likely pathogenic
REVEL	0.578	indeterminate
SaProt	—	not scored · why
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.7	phastCons 1
Regional constraint	o/e 1.08	unconstrained · MANE · 18 kb · p 4.9e-10 · regional, not allelic
Overall
CADD	24.2	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL is an independent agreement signal.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM D684V vs ClinVar D547V) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0022% South Asian · 2/91,066 alleles

Filtering AF 0.000365% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000137%

Overall 0.000186% 3/1,612,288 alleles · very rare exomes 2/1,460,210 · genomes 1/152,078 · joint denominator

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0022%	45,533
African / African-American	0.00134%	74,868

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: PLEC
Protein: p.Asp547Val
Coding: c.1640A>T
MANE Select: NM_201384
dbSNP: rs782141346
Type: single nucleotide variant
Location: chr8:143932890 (GRCh38)
Gene constraint: LOEUF 0.726 · pLI <0.01 (gnomAD)

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

Disease context

epidermolysis bullosa simplex 5B, with muscular dystrophy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: epidermolysis bullosa simplex 5A, Ogna type epidermolysis bullosa simplex 5C, with pyloric atresia autosomal recessive limb-girdle muscular dystrophy type 2Q epidermolysis bullosa simplex with nail dystrophy

For Epidermolysis bullosa simplex with muscular dystrophy (Orphanet):

Inheritance: Autosomal recessive
Onset: Infancy, Neonatal

Similar variants

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PLEC p.Arg2292Ter Pathogenic ★★ same condition
PLEC p.Arg2324Ter Pathogenic ★★ same condition
PLEC p.Arg2394Ter Pathogenic ★★ same condition
PLEC p.Arg559Ter Pathogenic ★★ same condition
PLEC p.Gln1591Ter Pathogenic/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/plec-p-asp547val (accessed [today's date]).

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