Is CLTC p.Arg63Gly (c.187C>G) pathogenic?

CLTC p.Arg63Gly (c.187C>G) is classified Uncertain significance in CLTC (ClinVar, Single submitter, 1 submitter; last evaluated 2021-08-19). AlphaMissense: likely pathogenic (0.9971); Absent from gnomAD v4.1.

How common is CLTC p.Arg63Gly (c.187C>G) in the general population?

CLTC p.Arg63Gly (c.187C>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CLTC p.Arg63Gly (c.187C>G)?

AlphaMissense predicts likely pathogenic (score 0.9971) — an in-silico prediction, not a clinical call.

CLTC p.Arg63Gly

c.187C>G · rs1598211790 · VCV1484802

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9971 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9971	likely pathogenic
REVEL	0.776	moderately pathogenic-leaning
SaProt	LLR -17.09	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 4.9	GERP -0.004, phastCons 1
Regional constraint	o/e 0.37	unconstrained · MANE · 23 kb · p 5.1e-71 · regional, not allelic
Overall
CADD	24.6	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: CLTC
Protein: p.Arg63Gly
Coding: c.187C>G
MANE Select: NM_004859
dbSNP: rs1598211790
Type: single nucleotide variant
Location: chr17:59644420 (GRCh38)
Gene constraint: LOEUF 0.104 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 75.62 · 10 PDB
Residue 63: the 'wd40-like repeat 1' region; a β-strand; the 'globular terminal domain' region

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

Similar variants

CLTC p.Arg63Ter Pathogenic ★★ same residue
CLTC p.Arg1165Ter Likely pathogenic ★★ same type
CLTC p.Arg1251Ter Pathogenic/Likely pathogenic ★★ same type
CLTC p.Arg1311Ter Likely pathogenic ★★ same type
CLTC p.Pro890Leu Pathogenic/Likely pathogenic ★★ same type
CLTC p.Tyr1574Ter Pathogenic/Likely pathogenic ★★ same type
CLTC p.Tyr803Ter Pathogenic/Likely pathogenic ★★ same type
CLTC c.4605+3T>A 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/cltc-p-arg63gly (accessed [today's date]).

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