Is CCDC159 p.Asp277Asn (c.829G>A) pathogenic?

CCDC159 p.Asp277Asn (c.829G>A) is classified Uncertain significance in CCDC159 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-02-21). AlphaMissense: likely benign (0.0959); Ultra-rare (popmax 0.0154%, amr).

How common is CCDC159 p.Asp277Asn (c.829G>A) in the general population?

CCDC159 p.Asp277Asn (c.829G>A) is ultra-rare (popmax 0.0154%, amr) (gnomAD).

What do computational predictors say about CCDC159 p.Asp277Asn (c.829G>A)?

AlphaMissense predicts likely benign (score 0.0959) — an in-silico prediction, not a clinical call.

CCDC159 p.Asp277Asn

c.829G>A · rs775535549 · VCV2384927

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0959 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0154%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0959	likely benign
REVEL	0.069	moderately benign-leaning
SaProt	LLR -8.32	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 4.8	GERP -1.3, phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 8,267 bp · p 0.42 · regional, not allelic
Overall
CADD	22.5	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 0.0154% Admixed American · 9/58,556 alleles

Filtering AF 0.00981% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00921%

Overall 0.00959% 154/1,605,360 alleles · ultra-rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.0154%	6,506
European (non-Finnish)	0.0114%	8,776
Remaining individualsnot grpmax-eligible	0.0113%	8,879
African / African-American	0.00536%	18,671

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: CCDC159
Protein: p.Asp277Asn
Coding: c.829G>A
MANE Select: NM_001080503
dbSNP: rs775535549
Type: single nucleotide variant
Location: chr19:11354636 (GRCh38)
Gene constraint: LOEUF 1.11 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 77.97
Residue 277: the 'disordered' region

Full CCDC159 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CCDC159 p.Ala203Thr Uncertain significance ★ ⚠ same type
CCDC159 p.Ala45Asp Uncertain significance ★ ⚠ same type
CCDC159 p.Arg117Cys Uncertain significance ★ ⚠ same type
CCDC159 p.Arg117His Uncertain significance ★ ⚠ same type
CCDC159 p.Arg124Trp Uncertain significance ★ ⚠ same type
CCDC159 p.Arg126Gly Uncertain significance ★ ⚠ same type
CCDC159 p.Arg139Gln Uncertain significance ★ ⚠ same type
CCDC159 p.Arg139Trp 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/ccdc159-p-asp277asn (accessed [today's date]).

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