Is BLTP2 p.Asn183Lys (c.549C>G) pathogenic?

BLTP2 p.Asn183Lys (c.549C>G) is classified Uncertain significance in BLTP2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-28). AlphaMissense: ambiguous (0.5238); Absent from gnomAD v4.1.

How common is BLTP2 p.Asn183Lys (c.549C>G) in the general population?

BLTP2 p.Asn183Lys (c.549C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about BLTP2 p.Asn183Lys (c.549C>G)?

AlphaMissense predicts ambiguous (score 0.5238) — an in-silico prediction, not a clinical call.

BLTP2 p.Asn183Lys

c.549C>G · VCV4213787

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.5238 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense no call

Computational evidence

Protein change
AlphaMissense	0.5238	ambiguous
REVEL	0.053	moderately benign-leaning
SaProt	LLR -6.79	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense makes no call.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · G>A here scores Δ0.52 · evaluated, not missing
Constraint at this position
Conservation	phyloP 3.9	GERP 1.6, phastCons 1
Regional constraint	o/e 0.98	unconstrained · MANE · 10 kb · p 0.6 · regional, not allelic
Overall
CADD	21.2	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: BLTP2
Protein: p.Asn183Lys
Coding: c.549C>G
MANE Select: NM_014680
Type: single nucleotide variant
Location: chr17:28642302 (GRCh38)
Structure: AlphaFold pLDDT 71.37

Full BLTP2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

BLTP2 p.Ala1395Ser Uncertain significance ★ ⚠ same type
BLTP2 p.Ala1564Thr Uncertain significance ★ ⚠ same type
BLTP2 p.Ala1826Thr Uncertain significance ★ ⚠ same type
BLTP2 p.Ala248Thr Uncertain significance ★ ⚠ same type
BLTP2 p.Ala324Thr Uncertain significance ★ ⚠ same type
BLTP2 p.Ala393Thr Uncertain significance ★ ⚠ same type
BLTP2 p.Ala539Thr Uncertain significance ★ ⚠ same type
BLTP2 p.Ala694Gly 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/bltp2-p-asn183lys (accessed [today's date]).

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