Is KRT5 p.Pro137Ala (c.409C>G) pathogenic?

KRT5 p.Pro137Ala (c.409C>G) is classified Uncertain significance in KRT5 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-08-23). AlphaMissense: likely benign (0.1085); Very rare (popmax 0.00407%, nfe); Associated with Inborn genetic diseases.

What condition is associated with KRT5 p.Pro137Ala (c.409C>G)?

KRT5 p.Pro137Ala (c.409C>G) is associated with Inborn genetic diseases (ClinVar).

How common is KRT5 p.Pro137Ala (c.409C>G) in the general population?

KRT5 p.Pro137Ala (c.409C>G) is very rare (popmax 0.00407%, nfe) (gnomAD).

What do computational predictors say about KRT5 p.Pro137Ala (c.409C>G)?

AlphaMissense predicts likely benign (score 0.1085) — an in-silico prediction, not a clinical call.

KRT5 p.Pro137Ala

c.409C>G · rs756012140 · VCV2246587

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1085 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00407%, nfe)

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1085	likely benign
REVEL	0.349	indeterminate
SaProt	LLR -10.22	damaging
⇒ SaProt calls this damaging; AlphaMissense does not; REVEL is indeterminate.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 9.9	phastCons 1
Regional constraint	o/e 0.98	unconstrained · MANE · 1,321 bp · p 0.7 · regional, not allelic
Overall
CADD	22.3	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 0.00407% European (non-Finnish) · 48/1,180,004 alleles

Filtering AF 0.00315% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00279%

Overall 0.0031% 50/1,613,768 alleles · very rare exomes 47/1,461,888 · genomes 3/151,880 · joint denominator

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00407%	24,583
Remaining individualsnot grpmax-eligible	0.0016%	62,488
African / African-American	0.00134%	74,792

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: KRT5
Protein: p.Pro137Ala
Coding: c.409C>G
MANE Select: NM_000424
dbSNP: rs756012140
Type: single nucleotide variant
Location: chr12:52519888 (GRCh38)
Gene constraint: LOEUF 0.538 · pLI 0.90 (gnomAD)
Structure: AlphaFold pLDDT 68.86 · 2 PDB
Residue 137: the 'head' region; a UniProt-annotated variant site (in ddd1)

Full KRT5 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

KRT5 p.Pro25Leu Pathogenic ★★ same condition
KRT5 p.Ala101Thr Uncertain significance ★★ ⚠ same condition
KRT5 p.Ala20Thr Uncertain significance ★★ ⚠ same condition
KRT5 p.Arg169His Uncertain significance ★★ ⚠ same condition
KRT5 p.Arg239Cys Uncertain significance ★★ ⚠ same condition
KRT5 p.Arg354Trp Uncertain significance ★★ ⚠ same condition
KRT5 p.Arg559Gln Uncertain significance ★★ ⚠ same condition
KRT5 p.Arg585Trp 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/krt5-p-pro137ala (accessed [today's date]).

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