Is ALMS1 p.Glu450= (c.1350G>A) pathogenic?

ALMS1 p.Glu450= (c.1350G>A) is classified Likely benign in ALMS1 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-10-24). Absent from gnomAD v4.1; Associated with Alstrom syndrome.

What condition is associated with ALMS1 p.Glu450= (c.1350G>A)?

ALMS1 p.Glu450= (c.1350G>A) is associated with Alstrom syndrome (ClinVar).

How common is ALMS1 p.Glu450= (c.1350G>A) in the general population?

ALMS1 p.Glu450= (c.1350G>A) is absent from gnomAD v4.1 (gnomAD).

How is Alström syndrome inherited?

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

ALMS1 p.Glu450=

c.1350G>A · rs2466062960 · VCV2036697

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

Alstrom syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 0.32	GERP -4.8, phastCons 0.015
Overall
CADD	0.666	PHRED · no single calibrated threshold — expert panels disagree

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: ALMS1
Protein: p.Glu450=
Coding: c.1350G>A
MANE Select: NM_001378454
dbSNP: rs2466062960
Type: single nucleotide variant
Location: chr2:73432209 (GRCh38)
Gene constraint: LOEUF 0.825 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)

Full ALMS1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Alstrom syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Alström syndrome (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Adult, Childhood, Infancy, Neonatal
Prevalence: 1-9 / 1 000 000 (Europe)

Similar variants

ALMS1 p.Glu450Ter Pathogenic ★★ same residue
ALMS1 p.Glu450fs Pathogenic ★ same residue
ALMS1 p.Glu450Gly Uncertain significance ★ ⚠ same residue
ALMS1 c.10079-1G>C Likely pathogenic ★★ same condition
ALMS1 c.10214-2A>G Likely pathogenic ★★ same condition
ALMS1 c.10384+1G>A Likely pathogenic ★★ same condition
ALMS1 c.10385-2A>G Pathogenic ★★ same condition
ALMS1 c.11547+3A>T Likely 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/alms1-p-glu450 (accessed [today's date]).

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