Is ALK p.Pro117Arg (c.350C>G) pathogenic?

ALK p.Pro117Arg (c.350C>G) is classified Conflicting classifications of pathogenicity in ALK (ClinVar, Conflicting submitters, 6 submitters; last evaluated 2026-01-31). AlphaMissense: likely benign (0.0697); Ultra-rare (popmax 0.0252%, nfe); Associated with hereditary neoplastic syndrome.

What condition is associated with ALK p.Pro117Arg (c.350C>G)?

ALK p.Pro117Arg (c.350C>G) is associated with hereditary neoplastic syndrome, neuroblastoma, susceptibility to, 3 (ClinVar).

How common is ALK p.Pro117Arg (c.350C>G) in the general population?

ALK p.Pro117Arg (c.350C>G) is ultra-rare (popmax 0.0252%, nfe) (gnomAD).

What do computational predictors say about ALK p.Pro117Arg (c.350C>G)?

AlphaMissense predicts likely benign (score 0.0697) — an in-silico prediction, not a clinical call.

ALK p.Pro117Arg

c.350C>G · rs201290745 · VCV470832

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 6 submitters

AlphaMissense

likely benign

0.0697 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0252%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
AlphaMissense	0.0697	likely benign
REVEL	0.064	moderately benign-leaning
SaProt	LLR -6.45	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.1	GERP 0.079, phastCons 1
Regional constraint	o/e 1.05	unconstrained · MANE · 670 kb · p 0.12 · regional, not allelic
Overall
CADD	16.84	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 0.0252% European (non-Finnish) · 291/1,153,116 alleles

Filtering AF 0.0228% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0219%

Overall 0.0198% 309/1,559,256 alleles · ultra-rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.0252%	3,963
South Asian	0.014%	7,136
Remaining individualsnot grpmax-eligible	0.00496%	20,144
African / African-American	0.00272%	36,832
Admixed American	0.00192%	52,074

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.Pro117Arg
Coding: c.350C>G
MANE Select: NM_004304
dbSNP: rs201290745
Type: single nucleotide variant
Location: chr2:29920310 (GRCh38)
Gene constraint: LOEUF 0.562 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 68.26 · 79 PDB

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.Pro117Ala Uncertain significance ★★ ⚠ same residue
ALK p.Pro117Gln Uncertain significance ★★ ⚠ same residue
ALK p.Pro117Leu Uncertain significance ★★ ⚠ same residue
ALK p.Pro117Ser Uncertain significance ★★ ⚠ same residue
ALK p.Pro117= Likely benign ★★ 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

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-pro117arg (accessed [today's date]).

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