Is SGCD p.Ser151Phe (c.452C>T) pathogenic?

SGCD p.Ser151Phe (c.452C>T) is classified Uncertain significance in SGCD (ClinVar, Multiple submitters, 6 submitters; last evaluated 2025-03-01). AlphaMissense: likely benign (0.305); Very rare (popmax 0.00223%, eas); Associated with dilated cardiomyopathy 1L.

What condition is associated with SGCD p.Ser151Phe (c.452C>T)?

SGCD p.Ser151Phe (c.452C>T) is associated with dilated cardiomyopathy 1L, autosomal recessive limb-girdle muscular dystrophy type 2F (ClinVar).

How common is SGCD p.Ser151Phe (c.452C>T) in the general population?

SGCD p.Ser151Phe (c.452C>T) is very rare (popmax 0.00223%, eas) (gnomAD).

How is Familial isolated dilated cardiomyopathy inherited?

Typically Autosomal dominant, Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about SGCD p.Ser151Phe (c.452C>T)?

AlphaMissense predicts likely benign (score 0.305) — an in-silico prediction, not a clinical call.

SGCD p.Ser151Phe

c.452C>T · rs766924806 · VCV968720

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 6 submitters

AlphaMissense

likely benign

0.305 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00223%, eas)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

dilated cardiomyopathy 1L

Computational evidence

Protein change
AlphaMissense	0.305	likely benign
REVEL	0.769	pathogenic-leaning
SaProt	LLR -9.11	tolerated
⇒ REVEL calls this damaging; AlphaMissense and SaProt do not.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 7.6	GERP 1.8, phastCons 1
Regional constraint	o/e 1.12	unconstrained · MANE · 430 kb · p 0.031 · regional, not allelic
Overall
CADD	25.5	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM S150F vs ClinVar S151F) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00223% East Asian · 1/44,850 alleles

Filtering AF 0.000501% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000366%

Overall 0.000868% 14/1,612,448 alleles · very rare exomes 14/1,460,248 · genomes 0/152,200 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00223%	44,850
Remaining individualsnot grpmax-eligible	0.0016%	62,428
South Asian	0.0011%	90,966
European (non-Finnish)	0.000933%	107,168

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: SGCD
Protein: p.Ser151Phe
Coding: c.452C>T
MANE Select: NM_000337
dbSNP: rs766924806
Type: single nucleotide variant
Location: chr5:156595001 (GRCh38)
Gene constraint: LOEUF 0.88 · pLI 0.05 (gnomAD)
Structure: AlphaFold pLDDT 81.43
Residue 150 UniProt numbering: a UniProt-annotated variant site (in cmd1l)

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

Disease context

dilated cardiomyopathy 1L — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: autosomal recessive limb-girdle muscular dystrophy type 2F

For Familial isolated dilated cardiomyopathy (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive, Mitochondrial inheritance
Onset: All ages
Prevalence: 1-9 / 100 000 (Europe)

Similar variants

SGCD p.Ser151Ala Uncertain significance ★★ ⚠ same residue
SGCD p.Arg165Ter Pathogenic ★★★ same condition
SGCD p.Arg97Ter Pathogenic ★★★ same condition
SGCD p.Arg31Trp Uncertain significance ★★★ ⚠ same condition
SGCD p.Ile64Thr Uncertain significance ★★★ ⚠ same condition
SGCD c.192+1G>A Likely pathogenic ★★ same condition
SGCD c.294+1G>A Likely pathogenic ★★ same condition
SGCD c.4-1G>T Likely pathogenic ★★ 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/sgcd-p-ser151phe (accessed [today's date]).

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