Is ALK p.Asp768Val (c.2303A>T) pathogenic?

ALK p.Asp768Val (c.2303A>T) is classified Uncertain significance in ALK (ClinVar, Single submitter, 1 submitter; last evaluated 2024-03-04). AlphaMissense: ambiguous (0.3491); Absent from gnomAD v4.1; Associated with neuroblastoma, susceptibility to, 3.

What condition is associated with ALK p.Asp768Val (c.2303A>T)?

ALK p.Asp768Val (c.2303A>T) is associated with neuroblastoma, susceptibility to, 3 (ClinVar).

How common is ALK p.Asp768Val (c.2303A>T) in the general population?

ALK p.Asp768Val (c.2303A>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about ALK p.Asp768Val (c.2303A>T)?

AlphaMissense predicts ambiguous (score 0.3491) — an in-silico prediction, not a clinical call.

ALK p.Asp768Val

c.2303A>T · rs2148188725 · VCV2840341

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.3491 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

neuroblastoma, susceptibility to, 3

Computational evidence

Protein change
AlphaMissense	0.3491	ambiguous
REVEL	0.256	benign-leaning
SaProt	LLR -12.38	damaging
⇒ SaProt calls this damaging; REVEL does not; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.2	GERP -2.5, phastCons 0.89
Regional constraint	o/e 0.92	unconstrained · MANE · 26 kb · p 0.039 · regional, not allelic
Overall
CADD	22.1	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.Asp768Val
Coding: c.2303A>T
MANE Select: NM_004304
dbSNP: rs2148188725
Type: single nucleotide variant
Location: chr2:29239732 (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

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

Similar variants

ALK p.Asp768Asn Uncertain significance ★★ ⚠ same residue
ALK p.Asp768Gly Uncertain significance ★★ ⚠ same residue
ALK p.Asp768= Conflicting classifications of pathogenicity ★ same residue
ALK p.Asp768His 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-asp768val (accessed [today's date]).

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