Is NCF2 p.Ala97Asp (c.290C>A) pathogenic?

NCF2 p.Ala97Asp (c.290C>A) is classified Conflicting classifications of pathogenicity in NCF2 (ClinVar, Conflicting submitters, 2 submitters; last evaluated 2024-11-26). AlphaMissense: likely pathogenic (0.966); Absent from gnomAD v4.1; Associated with granulomatous disease, chronic, autosomal recessive, cytochrome b-positive, type 2.

How common is NCF2 p.Ala97Asp (c.290C>A) in the general population?

NCF2 p.Ala97Asp (c.290C>A) is absent from gnomAD v4.1 (gnomAD).

How is Chronic granulomatous disease inherited?

Typically Autosomal recessive, X-linked recessive (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about NCF2 p.Ala97Asp (c.290C>A)?

AlphaMissense predicts likely pathogenic (score 0.966) — an in-silico prediction, not a clinical call.

NCF2 p.Ala97Asp

Q: What condition is associated with NCF2 p.Ala97Asp (c.290C>A)?

NCF2 p.Ala97Asp (c.290C>A) is associated with granulomatous disease, chronic, autosomal recessive, cytochrome b-positive, type 2 (ClinVar).

c.290C>A · rs755222977 · VCV3064849

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.966 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

granulomatous disease, chronic, autosomal recessive, cytochrome b-positive, type 2

Computational evidence

Protein change
AlphaMissense	0.966	likely pathogenic · top 6% in NCF2
REVEL	0.814	moderately pathogenic-leaning
SaProt	LLR -11.86	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 9.9	GERP 2.1, phastCons 1
Regional constraint	o/e 0.83	unconstrained · MANE · 34 kb · p 1.3e-05 · regional, not allelic
Overall
CADD	27.9	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: NCF2
Protein: p.Ala97Asp
Coding: c.290C>A
MANE Select: NM_000433
dbSNP: rs755222977
Type: single nucleotide variant
Location: chr1:183577675 (GRCh38)
Gene constraint: LOEUF 0.799 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 78.99 · 7 PDB
Residue 97: an α-helix

Full NCF2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

granulomatous disease, chronic, autosomal recessive, cytochrome b-positive, type 2 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Chronic granulomatous disease (Orphanet):

Inheritance: Autosomal recessive, X-linked recessive
Onset: Adolescent, Adult, Childhood, Infancy
Prevalence: 1-9 / 1 000 000 (Worldwide)

Similar variants

NCF2 p.Ala97Gly Uncertain significance ★ ⚠ same residue
NCF2 p.Ala97Pro Uncertain significance ★ ⚠ same residue
NCF2 p.Ala97Thr Uncertain significance ★ ⚠ same residue
NCF2 c.257+1G>A Pathogenic/Likely pathogenic ★★ same condition
NCF2 c.366+1G>A Pathogenic ★★ same condition
NCF2 c.714-2A>G Likely pathogenic ★★ same condition
NCF2 p.Ala202Val Pathogenic/Likely pathogenic ★★ same condition
NCF2 p.Arg102Ter Pathogenic ★★ 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/ncf2-p-ala97asp (accessed [today's date]).

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