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CYLD p.Leu297=

c.891G>A · rs140033230 · VCV735980

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0241%, afr)

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 5.2GERP 1.5, phastCons 1
Overall
CADD8.867PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.0241% African / African-American · 18/74,778 alleles
Filtering AF 0.0155% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0129%
Overall 0.00118% 19/1,609,110 alleles · ultra-rare
Ancestry group Frequency 1 in
African / African-Americangrpmax 0.0241% 4,154
Remaining individualsnot grpmax-eligible 0.0016% 62,314

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
CYLD
Protein
p.Leu297=
Coding
c.891G>A
MANE Select
NM_001378743
dbSNP
rs140033230
Type
single nucleotide variant
Location
chr16:50754402 (GRCh38)
Gene constraint
LOEUF 0.325 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure
AlphaFold pLDDT 75.06 · 6 PDB
Residue 297
the 'interaction with trip' region; a β-strand
Full CYLD 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/cyld-p-leu297 (accessed [today's date]).

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