Is CCKAR p.Arg150Pro (c.449G>C) pathogenic?

CCKAR p.Arg150Pro (c.449G>C) is classified Uncertain significance in CCKAR (ClinVar, Single submitter, 1 submitter; last evaluated 2024-01-16). AlphaMissense: likely pathogenic (0.9717); Absent from gnomAD v4.1.

How common is CCKAR p.Arg150Pro (c.449G>C) in the general population?

CCKAR p.Arg150Pro (c.449G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CCKAR p.Arg150Pro (c.449G>C)?

AlphaMissense predicts likely pathogenic (score 0.9717) — an in-silico prediction, not a clinical call.

CCKAR p.Arg150Pro

c.449G>C · rs202000988 · VCV3139691

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9717 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9717	likely pathogenic · top 9% in CCKAR
REVEL	0.697	pathogenic-leaning
SaProt	LLR -14.14	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.7	GERP 2.4, phastCons 1
Regional constraint	o/e 1.02	unconstrained · MANE · 8,626 bp · p 0.69 · regional, not allelic
Overall
CADD	31.0	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification

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: CCKAR
Protein: p.Arg150Pro
Coding: c.449G>C
MANE Select: NM_000730
dbSNP: rs202000988
Type: single nucleotide variant
Location: chr4:26485814 (GRCh38)
Gene constraint: LOEUF 1.012 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 78.36 · 14 PDB
Residue 150: a disulfide bond; an α-helix

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

Similar variants

CCKAR p.Ala142Glu Uncertain significance ★ ⚠ same type
CCKAR p.Ala142Val Uncertain significance ★ ⚠ same type
CCKAR p.Ala193Thr Uncertain significance ★ ⚠ same type
CCKAR p.Ala332Thr Uncertain significance ★ ⚠ same type
CCKAR p.Ala341Thr Uncertain significance ★ ⚠ same type
CCKAR p.Arg197Cys Uncertain significance ★ ⚠ same type
CCKAR p.Arg297Gln Uncertain significance ★ ⚠ same type
CCKAR p.Arg313Cys Uncertain significance ★ ⚠ same type

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/cckar-p-arg150pro (accessed [today's date]).

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