Is ALK p.Arg557= (c.1671T>A) pathogenic?

ALK p.Arg557= (c.1671T>A) is classified Likely benign in ALK (ClinVar, Single submitter, 1 submitter; last evaluated 2024-02-17). Absent from gnomAD v4.1; Associated with neuroblastoma, susceptibility to, 3.

What condition is associated with ALK p.Arg557= (c.1671T>A)?

ALK p.Arg557= (c.1671T>A) is associated with neuroblastoma, susceptibility to, 3 (ClinVar).

How common is ALK p.Arg557= (c.1671T>A) in the general population?

ALK p.Arg557= (c.1671T>A) is absent from gnomAD v4.1 (gnomAD).

ALK p.Arg557=

c.1671T>A · rs1666207701 · VCV934102

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

neuroblastoma, susceptibility to, 3

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 0.39	GERP -2.6
Overall
CADD	6.216	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: ALK
Protein: p.Arg557=
Coding: c.1671T>A
MANE Select: NM_004304
dbSNP: rs1666207701
Type: single nucleotide variant
Location: chr2:29297034 (GRCh38)
Gene constraint: LOEUF 0.562 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 68.26 · 79 PDB
Residue 557: the mam 2 domain

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

Disease context

neuroblastoma, susceptibility to, 3 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

ALK p.Arg557Gly Uncertain significance ★★ ⚠ same residue
ALK p.Arg557Leu Uncertain significance ★★ ⚠ same residue
ALK p.Arg557Cys Conflicting classifications of pathogenicity ★ ⚠ same residue
ALK p.Arg557His Conflicting classifications of pathogenicity ★ ⚠ 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

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-arg557 (accessed [today's date]).

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