Is NACA p.Pro27Leu (c.80C>T) pathogenic?

NACA p.Pro27Leu (c.80C>T) is classified Uncertain significance in NACA (ClinVar, Single submitter, 1 submitter; last evaluated 2023-06-07). AlphaMissense: likely pathogenic (0.6318); Ultra-rare (popmax 0.0207%, eas).

How common is NACA p.Pro27Leu (c.80C>T) in the general population?

NACA p.Pro27Leu (c.80C>T) is ultra-rare (popmax 0.0207%, eas) (gnomAD).

What do computational predictors say about NACA p.Pro27Leu (c.80C>T)?

AlphaMissense predicts likely pathogenic (score 0.6318) — an in-silico prediction, not a clinical call.

NACA p.Pro27Leu

c.80C>T · rs570406970 · VCV2518611

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.6318 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0207%, eas)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.6318	likely pathogenic · top 9% in NACA
REVEL	0.175	moderately benign-leaning
SaProt	LLR -8.11	tolerated
⇒ AlphaMissense calls this damaging; REVEL and SaProt do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 9.7	GERP 1.4, phastCons 1
Regional constraint	o/e 1.03	unconstrained · MANE · 5,320 bp · p 0.34 · regional, not allelic
Overall
CADD	24.3	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 0.0207% East Asian · 9/43,466 alleles

Filtering AF 0.0108% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00801%

Overall 0.000599% 9/1,502,454 alleles · ultra-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: NACA
Protein: p.Pro27Leu
Coding: c.80C>T
MANE Select: NM_001365896
dbSNP: rs570406970
Type: single nucleotide variant
Location: chr12:56721450 (GRCh38)
Gene constraint: LOEUF 0.627 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 38.15 · 26 PDB
Residue 27: the 'disordered' region

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

Similar variants

NACA p.Ala242= Benign ★★ same type
NACA p.Phe405Ser Benign ★★ same type
NACA p.Pro1772Ser Benign ★★ same type
NACA p.Pro490Arg Benign ★★ same type
NACA p.Ala152Val Uncertain significance ★ ⚠ same type
NACA p.Ala1803Pro Uncertain significance ★ ⚠ same type
NACA p.Ala1833Val Uncertain significance ★ ⚠ same type
NACA p.Ala1868Val Uncertain significance ★ ⚠ same type

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/naca-p-pro27leu (accessed [today's date]).

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