Is PHYKPL p.Ile356= (c.1068C>T) pathogenic?

PHYKPL p.Ile356= (c.1068C>T) is classified Likely benign in PHYKPL (ClinVar, No assertion criteria, 1 submitter; last evaluated 2019-07-15). Ultra-rare (popmax 0.0329%, mid); Associated with PHYKPL-related disorder.

What condition is associated with PHYKPL p.Ile356= (c.1068C>T)?

PHYKPL p.Ile356= (c.1068C>T) is associated with PHYKPL-related disorder (ClinVar).

How common is PHYKPL p.Ile356= (c.1068C>T) in the general population?

PHYKPL p.Ile356= (c.1068C>T) is ultra-rare (popmax 0.0329%, mid) (gnomAD).

PHYKPL p.Ile356=

c.1068C>T · rs148658218 · VCV3050453

Likely benign No assertion criteria

Classification

Likely benign

ClinVar

Review

No assertion criteria ☆☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

ultra-rare (popmax 0.0329%, mid)

Conditions

PHYKPL-related disorder

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5	GERP 0.7, phastCons 1
Overall
CADD	12.69	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0329% Middle Eastern · 2/6,084 alleles

Filtering AF 0.0139% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0133%

Overall 0.013% 210/1,613,946 alleles · ultra-rare exomes 197/1,461,782 · genomes 13/152,164 · joint denominator

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0329%	3,042
Remaining individualsnot grpmax-eligible	0.0192%	5,206
European (non-Finnish)	0.0158%	6,310
African / African-American	0.004%	24,972
South Asian	0.00329%	30,361
Finnishnot grpmax-eligible	0.00312%	32,006
East Asian	0.00223%	44,894

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: PHYKPL
Protein: p.Ile356=
Coding: c.1068C>T
MANE Select: NM_153373
dbSNP: rs148658218
Type: single nucleotide variant
Location: chr5:178215290 (GRCh38)
Gene constraint: LOEUF 1.02 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 96.20

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

Disease context

PHYKPL-related disorder

Similar variants

PHYKPL c.502-6C>T Likely benign same condition
PHYKPL p.Ala139= Likely benign same condition
PHYKPL p.Ala212Thr Benign same condition
PHYKPL p.His126Arg Benign same condition
PHYKPL p.Leu392= Likely benign same condition
PHYKPL p.Thr11= Benign same condition
PHYKPL p.Glu437Val Uncertain significance ★★ ⚠ same type
PHYKPL p.Ala139Val 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/phykpl-p-ile356 (accessed [today's date]).

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