Is VPS45 p.Arg555Pro (c.1664G>C) pathogenic?

VPS45 p.Arg555Pro (c.1664G>C) is classified Uncertain significance in VPS45 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2022-06-15). AlphaMissense: likely benign (0.1364); Ultra-rare (popmax 0.0527%, sas); Associated with congenital neutropenia-myelofibrosis-nephromegaly syndrome.

What condition is associated with VPS45 p.Arg555Pro (c.1664G>C)?

VPS45 p.Arg555Pro (c.1664G>C) is associated with congenital neutropenia-myelofibrosis-nephromegaly syndrome (ClinVar).

How common is VPS45 p.Arg555Pro (c.1664G>C) in the general population?

VPS45 p.Arg555Pro (c.1664G>C) is ultra-rare (popmax 0.0527%, sas) (gnomAD).

What do computational predictors say about VPS45 p.Arg555Pro (c.1664G>C)?

AlphaMissense predicts likely benign (score 0.1364) — an in-silico prediction, not a clinical call.

VPS45 p.Arg555Pro

Q: How is Congenital neutropenia-myelofibrosis-nephromegaly syndrome inherited?

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

c.1664G>C · rs142968690 · VCV218697

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.1364 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0527%, sas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

congenital neutropenia-myelofibrosis-nephromegaly syndrome

Computational evidence

Protein change
AlphaMissense	0.1364	likely benign
REVEL	0.218	benign-leaning
SaProt	LLR -5.08	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 6.4	GERP 2.7, phastCons 1
Regional constraint	o/e 0.81	unconstrained · MANE · 77 kb · p 1.3e-06 · regional, not allelic
Overall
CADD	22.0	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 0.0527% South Asian · 48/91,086 alleles

Filtering AF 0.0408% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0366%

Overall 0.00328% 53/1,614,002 alleles · ultra-rare exomes 52/1,461,856 · genomes 1/152,146 · joint denominator

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0527%	1,898
Remaining individualsnot grpmax-eligible	0.008%	12,497

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: VPS45
Protein: p.Arg555Pro
Coding: c.1664G>C
MANE Select: NM_007259
dbSNP: rs142968690
Type: single nucleotide variant
Location: chr1:150144747 (GRCh38)
Gene constraint: LOEUF 0.629 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 90.65

Full VPS45 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

congenital neutropenia-myelofibrosis-nephromegaly syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Congenital neutropenia-myelofibrosis-nephromegaly syndrome (Orphanet):

Inheritance: Autosomal recessive
Onset: Infancy, Neonatal

Similar variants

VPS45 p.Arg555Gln Uncertain significance ★ ⚠ same residue
VPS45 p.Glu238Lys Likely pathogenic ★★ same condition
VPS45 p.Thr224Asn Pathogenic ★★ same condition
VPS45 c.687+5A>G Uncertain significance ★★ same condition
VPS45 p.Ala392Thr Uncertain significance ★★ ⚠ same condition
VPS45 p.Ala445Gly Uncertain significance ★★ ⚠ same condition
VPS45 p.Ala567Val Uncertain significance ★★ ⚠ same condition
VPS45 p.Arg148Gln Uncertain significance ★★ ⚠ 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/vps45-p-arg555pro (accessed [today's date]).

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