Is THBD p.Pro380Ala (c.1138C>G) pathogenic?

THBD p.Pro380Ala (c.1138C>G) is classified Uncertain significance in THBD (ClinVar, Single submitter, 1 submitter; last evaluated 2023-05-11). AlphaMissense: likely benign (0.0994); Absent from gnomAD v4.1.

How common is THBD p.Pro380Ala (c.1138C>G) in the general population?

THBD p.Pro380Ala (c.1138C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about THBD p.Pro380Ala (c.1138C>G)?

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

THBD p.Pro380Ala

c.1138C>G · rs1427060777 · VCV2863279

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	0.276	benign-leaning
SaProt	LLR -4.40	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 5.6	GERP 1.4, phastCons 1
Regional constraint	o/e 1.04	unconstrained · MANE · 1,724 bp · p 0.25 · regional, not allelic
Overall
CADD	21.1	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: THBD
Protein: p.Pro380Ala
Coding: c.1138C>G
MANE Select: NM_000361
dbSNP: rs1427060777
Type: single nucleotide variant
Location: chr20:23048367 (GRCh38)
Gene constraint: LOEUF 1.938 · pLI 0.05 (gnomAD)
Structure: AlphaFold pLDDT 79.35 · 13 PDB
Residue 380: a β-strand; the egf-like 4 domain

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

Similar variants

THBD p.Pro380= Likely benign ★ same residue
THBD p.Cys537Ter Pathogenic/Likely pathogenic ★★ same type
THBD p.Ala139Ser Uncertain significance ★★ ⚠ same type
THBD p.Ala21Ser Uncertain significance ★★ ⚠ same type
THBD p.Ala255Pro Uncertain significance ★★ ⚠ same type
THBD p.Ala271Thr Uncertain significance ★★ ⚠ same type
THBD p.Ala272Val Uncertain significance ★★ ⚠ same type
THBD p.Ala284Gly 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/thbd-p-pro380ala (accessed [today's date]).

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