Is APMAP p.Asn126Ser (c.377A>G) pathogenic?

APMAP p.Asn126Ser (c.377A>G) is classified Uncertain significance in APMAP (ClinVar, Single submitter, 1 submitter; last evaluated 2022-02-10). AlphaMissense: likely benign (0.0909); Absent from gnomAD v4.1.

How common is APMAP p.Asn126Ser (c.377A>G) in the general population?

APMAP p.Asn126Ser (c.377A>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about APMAP p.Asn126Ser (c.377A>G)?

AlphaMissense predicts likely benign (score 0.0909) — an in-silico prediction, not a clinical call.

APMAP p.Asn126Ser

c.377A>G · rs1464427832 · VCV2276708

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0909 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0909	likely benign
REVEL	0.088	moderately benign-leaning
SaProt	LLR -9.95	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 2.2	GERP 0.41, phastCons 1
Regional constraint	o/e 0.92	unconstrained · MANE · 29 kb · p 0.066 · regional, not allelic
Overall
CADD	16.9	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: APMAP
Protein: p.Asn126Ser
Coding: c.377A>G
MANE Select: NM_020531
dbSNP: rs1464427832
Type: single nucleotide variant
Location: chr20:24973689 (GRCh38)
Gene constraint: LOEUF 1.14 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 91.60

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

Similar variants

APMAP p.Asn126Tyr Uncertain significance ★ ⚠ same residue
APMAP p.Ala47Gly Uncertain significance ★ ⚠ same type
APMAP p.Arg120Trp Uncertain significance ★ ⚠ same type
APMAP p.Arg134Gln Uncertain significance ★ ⚠ same type
APMAP p.Arg134Pro Uncertain significance ★ ⚠ same type
APMAP p.Arg143Gly Uncertain significance ★ ⚠ same type
APMAP p.Arg156Cys Uncertain significance ★ ⚠ same type
APMAP p.Arg156His 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/apmap-p-asn126ser (accessed [today's date]).

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