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PHF6 p.Ile290=

c.870T>C · rs763116203 · VCV2722367

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
very rare (popmax 0.00369%, nfe)
Conditions
1
Borjeson-Forssman-Lehmann syndrome

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
ConservationphyloP 2.3GERP 0.48, phastCons 1
Overall
CADD9.586PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.00369% European (non-Finnish) · 33/893,997 alleles
Filtering AF 0.00263% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00232%
Overall 0.00281% 34/1,208,976 alleles · very rare exomes 31/1,096,447 · genomes 3/112,529 · joint denominator
Ancestry group Frequency 1 in
European (non-Finnish)grpmax 0.00369% 27,091
African / African-American 0.00174% 57,379

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
PHF6
Protein
p.Ile290=
Coding
c.870T>C
MANE Select
NM_001015877
dbSNP
rs763116203
Type
single nucleotide variant
Location
chrX:134417204 (GRCh38)
Structure
AlphaFold pLDDT 73.45 · 2 PDB
Residue 290
a β-strand; the 'extended phd2 domain (ephd2)' region
Full PHF6 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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/phf6-p-ile290 (accessed [today's date]).

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