Is NACA p.Ser29Cys (c.86C>G) pathogenic?

NACA p.Ser29Cys (c.86C>G) is classified Uncertain significance in NACA (ClinVar, Single submitter, 1 submitter; last evaluated 2024-02-26). AlphaMissense: ambiguous (0.3572); Absent from gnomAD v4.1.

How common is NACA p.Ser29Cys (c.86C>G) in the general population?

NACA p.Ser29Cys (c.86C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about NACA p.Ser29Cys (c.86C>G)?

AlphaMissense predicts ambiguous (score 0.3572) — an in-silico prediction, not a clinical call.

NACA p.Ser29Cys

c.86C>G · rs747870209 · VCV3172678

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.3572 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense indeterminate

Computational evidence

Protein change
AlphaMissense	0.3572	ambiguous
REVEL	0.051	moderately benign-leaning
SaProt	LLR -9.46	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense is indeterminate.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 8.6	GERP 0.57, phastCons 1
Regional constraint	o/e 1.03	unconstrained · MANE · 5,320 bp · p 0.34 · regional, not allelic
Overall
CADD	23.3	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

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: NACA
Protein: p.Ser29Cys
Coding: c.86C>G
MANE Select: NM_001365896
dbSNP: rs747870209
Type: single nucleotide variant
Location: chr12:56721444 (GRCh38)
Gene constraint: LOEUF 0.627 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 38.15 · 26 PDB
Residue 29: 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-ser29cys (accessed [today's date]).

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