Is CLTC p.Pro395Ser (c.1183C>T) pathogenic?

CLTC p.Pro395Ser (c.1183C>T) is classified Uncertain significance in CLTC (ClinVar, Single submitter, 1 submitter; last evaluated 2024-09-23). AlphaMissense: likely benign (0.1643); Very rare (popmax 0.000254%, nfe).

How common is CLTC p.Pro395Ser (c.1183C>T) in the general population?

CLTC p.Pro395Ser (c.1183C>T) is very rare (popmax 0.000254%, nfe) (gnomAD).

What do computational predictors say about CLTC p.Pro395Ser (c.1183C>T)?

AlphaMissense predicts likely benign (score 0.1643) — an in-silico prediction, not a clinical call.

CLTC p.Pro395Ser

c.1183C>T · VCV3656699

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1643 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000254%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1643	likely benign
REVEL	0.211	benign-leaning
SaProt	LLR -7.60	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · C>A here scores Δ0.26 · evaluated, not missing
Constraint at this position
Conservation	phyloP 4.9	GERP 1, phastCons 1
Regional constraint	o/e 0.37	unconstrained · MANE · 23 kb · p 5.1e-71 · regional, not allelic
Overall
CADD	23.0	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — 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

Grpmax group 0.000254% European (non-Finnish) · 3/1,179,844 alleles

Filtering AF 6.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.9e-05%

Overall 0.000205% 3/1,461,586 alleles · very rare

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: CLTC
Protein: p.Pro395Ser
Coding: c.1183C>T
MANE Select: NM_004859
Type: single nucleotide variant
Location: chr17:59661458 (GRCh38)
Gene constraint: LOEUF 0.104 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 75.62 · 10 PDB
Residue 395: the 'globular terminal domain' region

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

Similar variants

CLTC p.Pro395= Likely benign ★ 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.Arg63Ter 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

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-pro395ser (accessed [today's date]).

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