Is ALK p.Pro496= (c.1488C>G) pathogenic?

ALK p.Pro496= (c.1488C>G) is classified Conflicting classifications of pathogenicity in ALK (ClinVar, Conflicting submitters, 2 submitters; last evaluated 2025-01-11). Ultra-rare (popmax 0.0165%, mid); Associated with hereditary neoplastic syndrome.

What condition is associated with ALK p.Pro496= (c.1488C>G)?

ALK p.Pro496= (c.1488C>G) is associated with hereditary neoplastic syndrome, neuroblastoma, susceptibility to, 3 (ClinVar).

How common is ALK p.Pro496= (c.1488C>G) in the general population?

ALK p.Pro496= (c.1488C>G) is ultra-rare (popmax 0.0165%, mid) (gnomAD).

ALK p.Pro496=

c.1488C>G · rs1189878579 · VCV1129814

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0165%, mid)

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.5	GERP 0.64, phastCons 0.79
Overall
CADD	11.71	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0165% Middle Eastern · 1/6,060 alleles

Filtering AF 0.0021% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00136%

Overall 0.000479% 7/1,461,836 alleles · ultra-rare

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0165%	6,060
South Asian	0.00549%	18,215
Remaining individualsnot grpmax-eligible	0.0016%	62,498

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: ALK
Protein: p.Pro496=
Coding: c.1488C>G
MANE Select: NM_004304
dbSNP: rs1189878579
Type: single nucleotide variant
Location: chr2:29320809 (GRCh38)
Gene constraint: LOEUF 0.562 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 68.26 · 79 PDB
Residue 496: the mam 2 domain

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

Disease context

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

Also linked: neuroblastoma, susceptibility to, 3

Similar variants

ALK p.Pro496Leu Uncertain significance ★ ⚠ same residue
ALK p.Arg1275Gln Pathogenic ★★ same condition
ALK c.1154+5G>A Uncertain significance ★★ same condition
ALK c.1155-3C>T Uncertain significance ★★ same condition
ALK c.1282+3A>G Uncertain significance ★★ same condition
ALK c.1414+1G>A Uncertain significance ★★ same condition
ALK c.1414+3G>A Uncertain significance ★★ same condition
ALK c.1415-3T>C Uncertain significance ★★ 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/alk-p-pro496 (accessed [today's date]).

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