Is C6 p.Glu550Asp (c.1650G>C) pathogenic?

C6 p.Glu550Asp (c.1650G>C) is classified Uncertain significance in C6 (ClinVar, Single submitter, 1 submitter; last evaluated 2021-03-01). AlphaMissense: likely benign (0.0794); Absent from gnomAD v4.1.

How common is C6 p.Glu550Asp (c.1650G>C) in the general population?

C6 p.Glu550Asp (c.1650G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about C6 p.Glu550Asp (c.1650G>C)?

AlphaMissense predicts likely benign (score 0.0794) — an in-silico prediction, not a clinical call.

C6 p.Glu550Asp

c.1650G>C · rs2150265358 · VCV1495618

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0794 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0794	likely benign
REVEL	0.065	moderately benign-leaning
SaProt	LLR -6.18	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 -1.9	GERP -2.9
Regional constraint	o/e 1.09	unconstrained · MANE · 60 kb · p 0.0034 · regional, not allelic
Overall
CADD	0.077	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: C6
Protein: p.Glu550Asp
Coding: c.1650G>C
MANE Select: NM_000065
dbSNP: rs2150265358
Type: single nucleotide variant
Location: chr5:41160176 (GRCh38)
Gene constraint: LOEUF 1.008 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 79.72 · 11 PDB
Residue 550: an α-helix; a disulfide bond; the egf-like domain

Full C6 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

C6 p.Arg596Ter Pathogenic/Likely pathogenic ★★ same type
C6 p.Arg606Ter Pathogenic ★★ same type
C6 p.Cys218Ter Pathogenic/Likely pathogenic ★★ same type
C6 p.Tyr683Ter Pathogenic/Likely pathogenic ★★ same type
C6 p.Ala21Val Uncertain significance ★★ ⚠ same type
C6 p.Ala396Gly Uncertain significance ★★ ⚠ same type
C6 p.Ala456Thr Uncertain significance ★★ ⚠ same type
C6 p.Ala500Ser 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/c6-p-glu550asp (accessed [today's date]).

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