Is CAPN7 p.Pro456Ser (c.1366C>T) pathogenic?

CAPN7 p.Pro456Ser (c.1366C>T) is classified Uncertain significance in CAPN7 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-11-13). AlphaMissense: ambiguous (0.48); Ultra-rare (popmax 0.0267%, amr).

How common is CAPN7 p.Pro456Ser (c.1366C>T) in the general population?

CAPN7 p.Pro456Ser (c.1366C>T) is ultra-rare (popmax 0.0267%, amr) (gnomAD).

What do computational predictors say about CAPN7 p.Pro456Ser (c.1366C>T)?

AlphaMissense predicts ambiguous (score 0.48) — an in-silico prediction, not a clinical call.

CAPN7 p.Pro456Ser

c.1366C>T · rs757490215 · VCV3137175

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.48 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0267%, amr)

Computational evidence

Protein change
AlphaMissense	0.48	ambiguous
REVEL	0.624	indeterminate
SaProt	LLR -7.71	tolerated
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.7	GERP 1.8, phastCons 1
Regional constraint	o/e 0.88	unconstrained · MANE · 28 kb · p 0.0017 · regional, not allelic
Overall
CADD	24.0	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

Grpmax group 0.0267% Admixed American · 16/59,936 alleles

Filtering AF 0.0167% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0136%

Overall 0.00118% 19/1,613,478 alleles · ultra-rare exomes 19/1,461,222 · genomes 0/152,256 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.0267%	3,746
East Asian	0.00446%	22,428
European (non-Finnish)	8.48e-05%	1,179,586

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: CAPN7
Protein: p.Pro456Ser
Coding: c.1366C>T
MANE Select: NM_014296
dbSNP: rs757490215
Type: single nucleotide variant
Location: chr3:15235104 (GRCh38)
Gene constraint: LOEUF 0.882 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 88.88 · 2 PDB
Residue 456: the calpain catalytic domain

Full CAPN7 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CAPN7 c.2073+1G>T Uncertain significance ★ same type
CAPN7 p.Ala10Asp Uncertain significance ★ ⚠ same type
CAPN7 p.Ala10Ser Uncertain significance ★ ⚠ same type
CAPN7 p.Ala149Val Uncertain significance ★ ⚠ same type
CAPN7 p.Ala29Val Uncertain significance ★ ⚠ same type
CAPN7 p.Ala37Thr Uncertain significance ★ ⚠ same type
CAPN7 p.Ala39Asp Uncertain significance ★ ⚠ same type
CAPN7 p.Ala459Ser 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/capn7-p-pro456ser (accessed [today's date]).

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