Is APPBP2 p.Asn24Ser (c.71A>G) pathogenic?

APPBP2 p.Asn24Ser (c.71A>G) is classified Uncertain significance in APPBP2 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-12-22). AlphaMissense: likely benign (0.0686); Very rare (popmax 0.000424%, nfe).

How common is APPBP2 p.Asn24Ser (c.71A>G) in the general population?

APPBP2 p.Asn24Ser (c.71A>G) is very rare (popmax 0.000424%, nfe) (gnomAD).

What do computational predictors say about APPBP2 p.Asn24Ser (c.71A>G)?

AlphaMissense predicts likely benign (score 0.0686) — an in-silico prediction, not a clinical call.

APPBP2 p.Asn24Ser

c.71A>G · VCV3886962

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0686 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000424%, nfe)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.0686	likely benign
REVEL	0.355	indeterminate
SaProt	LLR -9.00	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.7	phastCons 1
Regional constraint	o/e 0.75	unconstrained · MANE · 47 kb · p 0.00045 · regional, not allelic
Overall
CADD	22.1	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 0.000424% European (non-Finnish) · 5/1,179,974 alleles

Filtering AF 0.000124% ClinGen BA1/BS1 input FAF95, joint · FAF99 9e-05%

Overall 0.00031% 5/1,613,868 alleles · very rare

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: APPBP2
Protein: p.Asn24Ser
Coding: c.71A>G
MANE Select: NM_006380
Type: single nucleotide variant
Location: chr17:60525861 (GRCh38)
Gene constraint: LOEUF 0.34 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 93.52 · 6 PDB
Residue 24: a turn

Full APPBP2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

APPBP2 p.Ala272Gly Uncertain significance ★ ⚠ same type
APPBP2 p.Arg161Cys Uncertain significance ★ ⚠ same type
APPBP2 p.Arg27His Uncertain significance ★ ⚠ same type
APPBP2 p.Arg545Gln Uncertain significance ★ ⚠ same type
APPBP2 p.Arg71Thr Uncertain significance ★ ⚠ same type
APPBP2 p.Asp154Asn Uncertain significance ★ ⚠ same type
APPBP2 p.Gln487His Uncertain significance ★ ⚠ same type
APPBP2 p.Gln565His 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/appbp2-p-asn24ser (accessed [today's date]).

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