Is UNC79 p.Ala331Val (c.992C>T) pathogenic?

UNC79 p.Ala331Val (c.992C>T) is classified Uncertain significance in UNC79 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-08-09). Ultra-rare (popmax 0.0835%, nfe); Associated with Inborn genetic diseases.

What condition is associated with UNC79 p.Ala331Val (c.992C>T)?

UNC79 p.Ala331Val (c.992C>T) is associated with Inborn genetic diseases (ClinVar).

How common is UNC79 p.Ala331Val (c.992C>T) in the general population?

UNC79 p.Ala331Val (c.992C>T) is ultra-rare (popmax 0.0835%, nfe) (gnomAD).

UNC79 p.Ala331Val

c.992C>T · rs150368733 · VCV2237092

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

ultra-rare (popmax 0.0835%, nfe)

Conditions

Inborn genetic diseases

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.232	benign-leaning
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · C>G here scores Δ0.35 · evaluated, not missing
Constraint at this position
Conservation	phyloP 7.7	GERP 1.6, phastCons 1
Overall
CADD	23.5	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0835% European (non-Finnish) · 985/1,179,816 alleles

Filtering AF 0.0791% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0774%

Overall 0.0652% 1,052/1,613,816 alleles · ultra-rare exomes 977/1,461,626 · genomes 75/152,190 · joint denominator

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.0835%	1,198
Remaining individualsnot grpmax-eligible	0.0464%	2,155
Finnishnot grpmax-eligible	0.0281%	3,557
Admixed American	0.0183%	5,454
African / African-American	0.012%	8,334

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: UNC79
Protein: p.Ala331Val
Coding: c.992C>T
MANE Select: NM_001395159
dbSNP: rs150368733
Type: single nucleotide variant
Location: chr14:93528586 (GRCh38)
Gene constraint: LOEUF 0.168 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 63.95 · 3 PDB

Full UNC79 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

UNC79 p.Pro2467Arg Uncertain significance ★★ same condition
UNC79 p.Thr2409Met Uncertain significance ★★ same condition
UNC79 p.Tyr539Phe Uncertain significance ★★ same condition
UNC79 c.6134-1G>A Likely pathogenic ★ same condition
UNC79 p.Gln1343Ter Pathogenic ★ same condition
UNC79 p.Lys251Ter Pathogenic ★ same condition
UNC79 p.Ala1041Thr Uncertain significance ★ same condition
UNC79 p.Ala1063Ser 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/unc79-p-ala331val (accessed [today's date]).

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