Is ABCA8 p.Pro121Thr (c.361C>A) pathogenic?

ABCA8 p.Pro121Thr (c.361C>A) is classified Uncertain significance in ABCA8 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-08). AlphaMissense: likely benign (0.0994); Absent from gnomAD v4.1.

How common is ABCA8 p.Pro121Thr (c.361C>A) in the general population?

ABCA8 p.Pro121Thr (c.361C>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about ABCA8 p.Pro121Thr (c.361C>A)?

AlphaMissense predicts likely benign (score 0.0994) — an in-silico prediction, not a clinical call.

ABCA8 p.Pro121Thr

c.361C>A · VCV4092327

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0994 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0994	likely benign
REVEL	0.214	benign-leaning
SaProt	LLR -4.08	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -3.8	GERP -3.6
Regional constraint	o/e 1.01	unconstrained · MANE · 74 kb · p 0.82 · regional, not allelic
Overall
CADD	0.003	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

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: ABCA8
Protein: p.Pro121Thr
Coding: c.361C>A
MANE Select: NM_001288985
Type: single nucleotide variant
Location: chr17:68937056 (GRCh38)
Gene constraint: LOEUF 1.086 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 78.67

Full ABCA8 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ABCA8 p.Gly176Ser Uncertain significance ★★ ⚠ same type
ABCA8 c.4200-1G>C Benign ★★ same type
ABCA8 p.Gly1225Glu Benign ★★ same type
ABCA8 p.Ile542= Benign/Likely benign ★★ same type
ABCA8 p.Met251Ile Benign ★★ same type
ABCA8 c.3316-8G>T Uncertain significance ★ same type
ABCA8 p.Ala1109Val Uncertain significance ★ ⚠ same type
ABCA8 p.Ala1344Ser 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/abca8-p-pro121thr (accessed [today's date]).

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