Is C6 p.Glu617Lys (c.1849G>A) pathogenic?

C6 p.Glu617Lys (c.1849G>A) is classified Uncertain significance in C6 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-08-21). AlphaMissense: likely benign (0.1053); Ultra-rare (popmax 0.0538%, sas); Associated with Inborn genetic diseases.

What condition is associated with C6 p.Glu617Lys (c.1849G>A)?

C6 p.Glu617Lys (c.1849G>A) is associated with Inborn genetic diseases (ClinVar).

How common is C6 p.Glu617Lys (c.1849G>A) in the general population?

C6 p.Glu617Lys (c.1849G>A) is ultra-rare (popmax 0.0538%, sas) (gnomAD).

What do computational predictors say about C6 p.Glu617Lys (c.1849G>A)?

AlphaMissense predicts likely benign (score 0.1053) — an in-silico prediction, not a clinical call.

C6 p.Glu617Lys

c.1849G>A · rs755665447 · VCV1903851

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.1053 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0538%, sas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1053	likely benign
REVEL	0.028	moderately benign-leaning
SaProt	LLR -7.74	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 0.64	GERP -0.91, phastCons 1
Regional constraint	o/e 1.09	unconstrained · MANE · 60 kb · p 0.0034 · regional, not allelic
Overall
CADD	17.09	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

Grpmax group 0.0538% South Asian · 49/91,082 alleles

Filtering AF 0.0418% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0375%

Overall 0.00347% 56/1,613,680 alleles · ultra-rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0538%	1,859
Middle Eastern	0.0165%	6,056
Remaining individualsnot grpmax-eligible	0.0016%	62,484
European (non-Finnish)	0.000424%	235,940

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: C6
Protein: p.Glu617Lys
Coding: c.1849G>A
MANE Select: NM_000065
dbSNP: rs755665447
Type: single nucleotide variant
Location: chr5:41159089 (GRCh38)
Gene constraint: LOEUF 1.008 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 79.72 · 11 PDB
Residue 617: the 'ccp 1' region; a disulfide bond

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

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

C6 p.Ala396Gly Uncertain significance ★★ ⚠ same condition
C6 p.Ala456Thr Uncertain significance ★★ ⚠ same condition
C6 p.Ala500Ser Uncertain significance ★★ ⚠ same condition
C6 p.Arg108His Uncertain significance ★★ ⚠ same condition
C6 p.Arg145His Uncertain significance ★★ ⚠ same condition
C6 p.Arg150His Uncertain significance ★★ ⚠ same condition
C6 p.Arg182Gln Uncertain significance ★★ ⚠ same condition
C6 p.Arg356Gln Uncertain significance ★★ ⚠ same condition

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-glu617lys (accessed [today's date]).

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