Is ALK p.Ala68Pro (c.202G>C) pathogenic?

ALK p.Ala68Pro (c.202G>C) is classified Uncertain significance in ALK (ClinVar, Multiple submitters, 2 submitters; last evaluated 2026-01-11). AlphaMissense: likely pathogenic (0.9132); Absent from gnomAD v4.1; Associated with hereditary neoplastic syndrome.

What condition is associated with ALK p.Ala68Pro (c.202G>C)?

ALK p.Ala68Pro (c.202G>C) is associated with hereditary neoplastic syndrome, neuroblastoma, susceptibility to, 3 (ClinVar).

How common is ALK p.Ala68Pro (c.202G>C) in the general population?

ALK p.Ala68Pro (c.202G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about ALK p.Ala68Pro (c.202G>C)?

AlphaMissense predicts likely pathogenic (score 0.9132) — an in-silico prediction, not a clinical call.

ALK p.Ala68Pro

c.202G>C · rs1414978905 · VCV662362

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.9132 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
AlphaMissense	0.9132	likely pathogenic
REVEL	0.16	moderately benign-leaning
SaProt	LLR -11.15	damaging
⇒ AlphaMissense and SaProt call this damaging; REVEL does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.8	GERP -0.11, phastCons 1
Regional constraint	o/e 1.05	unconstrained · MANE · 670 kb · p 0.12 · regional, not allelic
Overall
CADD	23.9	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

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.Ala68Pro
Coding: c.202G>C
MANE Select: NM_004304
dbSNP: rs1414978905
Type: single nucleotide variant
Location: chr2:29920458 (GRCh38)
Gene constraint: LOEUF 0.562 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 68.26 · 79 PDB
Residue 68: the 'heparin-binding region' region

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.Ala68Ser Uncertain significance ★★ ⚠ same residue
ALK p.Ala68= Likely benign ★★ same residue
ALK p.Ala68Thr Uncertain significance ★ ⚠ same residue
ALK p.Ala68Val 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

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-ala68pro (accessed [today's date]).

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