Is SIN3A p.Asp468Val (c.1403A>T) pathogenic?

SIN3A p.Asp468Val (c.1403A>T) is classified Uncertain significance in SIN3A (ClinVar, Single submitter, 1 submitter; last evaluated 2022-11-04). AlphaMissense: ambiguous (0.4628); Absent from gnomAD v4.1.

How common is SIN3A p.Asp468Val (c.1403A>T) in the general population?

SIN3A p.Asp468Val (c.1403A>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about SIN3A p.Asp468Val (c.1403A>T)?

AlphaMissense predicts ambiguous (score 0.4628) — an in-silico prediction, not a clinical call.

SIN3A p.Asp468Val

c.1403A>T · VCV3340815

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4628 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Computational evidence

Protein change
AlphaMissense	0.4628	ambiguous
REVEL	0.465	indeterminate
SaProt	LLR -11.01	damaging
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · T>C here scores Δ0.83 · evaluated, not missing
Constraint at this position
Conservation	phyloP 7.9	GERP 1.7, phastCons 1
Regional constraint	o/e 0.55	unconstrained · MANE · 11 kb · p 3.7e-14 · regional, not allelic
Overall
CADD	26.2	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: SIN3A
Protein: p.Asp468Val
Coding: c.1403A>T
MANE Select: NM_001145358
Type: single nucleotide variant
Location: chr15:75407059 (GRCh38)
Gene constraint: LOEUF 0.14 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 69.67
Residue 468: the 'interaction with sap30' region; the pah 3 domain; the 'interaction with rest' region

Full SIN3A gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

SIN3A p.Arg1140Ter Pathogenic ★★ same type
SIN3A p.Arg471Ter Pathogenic ★★ same type
SIN3A p.Arg537Ter Pathogenic ★★ same type
SIN3A p.Arg553Ter Pathogenic/Likely pathogenic ★★ same type
SIN3A p.Arg559Ter Pathogenic/Likely pathogenic ★★ same type
SIN3A p.Arg718Ter Pathogenic/Likely pathogenic ★★ same type
SIN3A p.Arg897Ter Pathogenic ★★ same type
SIN3A p.Arg935Ter Pathogenic/Likely pathogenic ★★ 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/sin3a-p-asp468val (accessed [today's date]).

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