Is ALS2 p.His952Arg (c.2855A>G) pathogenic?

ALS2 p.His952Arg (c.2855A>G) is classified Uncertain significance in ALS2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-10-08). AlphaMissense: likely pathogenic (0.7358); Very rare (popmax 0.00575%, nfe); Associated with Inborn genetic diseases.

What condition is associated with ALS2 p.His952Arg (c.2855A>G)?

ALS2 p.His952Arg (c.2855A>G) is associated with Inborn genetic diseases, infantile-onset ascending hereditary spastic paralysis (ClinVar).

How common is ALS2 p.His952Arg (c.2855A>G) in the general population?

ALS2 p.His952Arg (c.2855A>G) is very rare (popmax 0.00575%, nfe) (gnomAD).

What do computational predictors say about ALS2 p.His952Arg (c.2855A>G)?

AlphaMissense predicts likely pathogenic (score 0.7358) — an in-silico prediction, not a clinical call.

ALS2 p.His952Arg

c.2855A>G · rs372139071 · VCV1016892

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.7358 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00575%, nfe)

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.7358	likely pathogenic
REVEL	0.546	indeterminate
SaProt	LLR -3.46	tolerated
⇒ AlphaMissense calls this damaging; SaProt does not; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.9	GERP 1.9, phastCons 1
Regional constraint	o/e 0.87	unconstrained · MANE · 56 kb · p 7.1e-07 · regional, not allelic
Overall
CADD	25.4	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

Grpmax group 0.00575% European (non-Finnish) · 66/1,146,996 alleles

Filtering AF 0.00464% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00423%

Overall 0.00438% 68/1,551,554 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.00575%	17,379
African / African-American	0.00137%	73,030
South Asian	0.00119%	84,070

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: ALS2
Protein: p.His952Arg
Coding: c.2855A>G
MANE Select: NM_020919
dbSNP: rs372139071
Type: single nucleotide variant
Location: chr2:201727762 (GRCh38)
Gene constraint: LOEUF 0.649 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 74.69
Residue 952: the ph domain

Full ALS2 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

Also linked: infantile-onset ascending hereditary spastic paralysis

Similar variants

ALS2 p.His952= Likely benign ★★ same residue
ALS2 c.1640+1G>A Pathogenic/Likely pathogenic ★★ same condition
ALS2 c.2580+2T>C Pathogenic ★★ same condition
ALS2 c.3703-2A>G Pathogenic/Likely pathogenic ★★ same condition
ALS2 p.Ala573Glu Likely pathogenic ★★ same condition
ALS2 p.Arg1139Ter Pathogenic/Likely pathogenic ★★ same condition
ALS2 p.Arg1421Ter Pathogenic/Likely pathogenic ★★ same condition
ALS2 p.Arg1461Ter 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/als2-p-his952arg (accessed [today's date]).

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