Is PDE5A p.Ser377Ala (c.1129T>G) pathogenic?

PDE5A p.Ser377Ala (c.1129T>G) is classified Uncertain significance in PDE5A (ClinVar, Single submitter, 1 submitter; last evaluated 2025-11-20). AlphaMissense: likely benign (0.0671); Ultra-rare (popmax 0.0102%, amr).

How common is PDE5A p.Ser377Ala (c.1129T>G) in the general population?

PDE5A p.Ser377Ala (c.1129T>G) is ultra-rare (popmax 0.0102%, amr) (gnomAD).

What do computational predictors say about PDE5A p.Ser377Ala (c.1129T>G)?

AlphaMissense predicts likely benign (score 0.0671) — an in-silico prediction, not a clinical call.

PDE5A p.Ser377Ala

c.1129T>G · VCV4566307

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0671 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0102%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0671	likely benign
REVEL	0.088	moderately benign-leaning
SaProt	LLR -5.96	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	Δ0.28	donor gain · deltas
Constraint at this position
Conservation	phyloP 4.1	GERP 0.63, phastCons 1
Regional constraint	o/e 0.82	unconstrained · MANE · 130 kb · p 1.5e-08 · regional, not allelic
Overall
CADD	19.58	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 0.0102% Admixed American · 5/48,824 alleles

Filtering AF 0.00396% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00257%

Overall 0.000829% 13/1,567,992 alleles · ultra-rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.0102%	9,765
Remaining individualsnot grpmax-eligible	0.00166%	60,368
African / African-American	0.00139%	71,854
European (non-Finnish)	0.000516%	193,890

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: PDE5A
Protein: p.Ser377Ala
Coding: c.1129T>G
MANE Select: NM_001083
Type: single nucleotide variant
Location: chr4:119562835 (GRCh38)
Gene constraint: LOEUF 0.704 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 82.32 · 50 PDB
Residue 377: the gaf 2 domain

Full PDE5A gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

PDE5A c.2190-4G>A Benign/Likely benign ★★ same type
PDE5A p.Arg740Lys Likely benign ★★ same type
PDE5A p.Glu119Val Benign/Likely benign ★★ same type
PDE5A p.Glu475= Benign/Likely benign ★★ same type
PDE5A p.Glu808= Benign ★★ same type
PDE5A p.Lys480Gln Benign ★★ same type
PDE5A p.Pro671= Benign ★★ same type
PDE5A p.Ala235Val 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/pde5a-p-ser377ala (accessed [today's date]).

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