Is PHKB p.Arg927Ser (c.2781G>T) pathogenic?

PHKB p.Arg927Ser (c.2781G>T) is classified Uncertain significance in PHKB (ClinVar, Single submitter, 1 submitter; last evaluated 2021-10-05). AlphaMissense: ambiguous (0.4719); Absent from gnomAD v4.1; Associated with Inborn genetic diseases.

What condition is associated with PHKB p.Arg927Ser (c.2781G>T)?

PHKB p.Arg927Ser (c.2781G>T) is associated with Inborn genetic diseases (ClinVar).

How common is PHKB p.Arg927Ser (c.2781G>T) in the general population?

PHKB p.Arg927Ser (c.2781G>T) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about PHKB p.Arg927Ser (c.2781G>T)?

AlphaMissense predicts ambiguous (score 0.4719) — an in-silico prediction, not a clinical call.

PHKB p.Arg927Ser

c.2781G>T · rs2506722118 · VCV2229193

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4719 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.4719	ambiguous
REVEL	0.617	indeterminate
SaProt	LLR -7.99	tolerated
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.8	GERP 0.4, phastCons 1
Regional constraint	o/e 0.98	unconstrained · MANE · 238 kb · p 0.5 · regional, not allelic
Overall
CADD	19.67	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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: PHKB
Protein: p.Arg927Ser
Coding: c.2781G>T
MANE Select: NM_000293
dbSNP: rs2506722118
Type: single nucleotide variant
Location: chr16:47693393 (GRCh38)
Gene constraint: LOEUF 0.792 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 87.06 · 6 PDB
Residue 927: an α-helix; the 'calmodulin-binding' region

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

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

PHKB p.Ala1072Thr Uncertain significance ★★ ⚠ same condition
PHKB p.Ala781Val Uncertain significance ★★ ⚠ same condition
PHKB p.Ala787Pro Uncertain significance ★★ ⚠ same condition
PHKB p.Ala9Thr Uncertain significance ★★ ⚠ same condition
PHKB p.Arg103Gln Uncertain significance ★★ ⚠ same condition
PHKB p.Arg131His Uncertain significance ★★ ⚠ same condition
PHKB p.Arg144Cys Uncertain significance ★★ ⚠ same condition
PHKB p.Arg214His 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/phkb-p-arg927ser (accessed [today's date]).

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