Is A2ML1 p.Leu601Pro (c.1802T>C) pathogenic?

A2ML1 p.Leu601Pro (c.1802T>C) is classified Uncertain significance in A2ML1 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-12-15). AlphaMissense: ambiguous (0.4526); Very rare (popmax 0.00203%, nfe).

How common is A2ML1 p.Leu601Pro (c.1802T>C) in the general population?

A2ML1 p.Leu601Pro (c.1802T>C) is very rare (popmax 0.00203%, nfe) (gnomAD).

What do computational predictors say about A2ML1 p.Leu601Pro (c.1802T>C)?

AlphaMissense predicts ambiguous (score 0.4526) — an in-silico prediction, not a clinical call.

A2ML1 p.Leu601Pro

c.1802T>C · rs773062742 · VCV946231

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

ambiguous

0.4526 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00203%, nfe)

Computational evidence

Protein change
AlphaMissense	0.4526	ambiguous
REVEL	0.603	indeterminate
SaProt	LLR -14.05	damaging
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.5	GERP 1.7, phastCons 0.99
Regional constraint	o/e 0.94	unconstrained · MANE · 52 kb · p 0.02 · regional, not allelic
Overall
CADD	20.4	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 0.00203% European (non-Finnish) · 24/1,179,770 alleles

Filtering AF 0.00138% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00116%

Overall 0.00167% 27/1,613,372 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0048%	20,819
European (non-Finnish)grpmax	0.00203%	49,157

Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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: A2ML1
Protein: p.Leu601Pro
Coding: c.1802T>C
MANE Select: NM_144670
dbSNP: rs773062742
Type: single nucleotide variant
Location: chr12:8847667 (GRCh38)
Gene constraint: LOEUF 0.953 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 80.61 · 5 PDB
Residue 601: an α-helix; a disulfide bond; a UniProt-annotated variant site (risk factor for otitis media)

Full A2ML1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

A2ML1 c.1834-1G>T Uncertain significance ★★ same type
A2ML1 c.3264+4C>T Uncertain significance ★★ same type
A2ML1 c.3933+4A>G Uncertain significance ★★ same type
A2ML1 c.409+1G>A Uncertain significance ★★ same type
A2ML1 c.4221+2T>C Uncertain significance ★★ same type
A2ML1 c.*1+1G>A Uncertain significance ★★ same type
A2ML1 p.Ala1002Val Uncertain significance ★★ ⚠ same type
A2ML1 p.Ala1039Val 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/a2ml1-p-leu601pro (accessed [today's date]).

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