YY1

Chr 14AD

YY1 transcription factor

Also known as: DELTA, GADEVS, INO80S, NF-E1, UCRBP, YIN-YANG-1

YY1 is a ubiquitously distributed transcription factor belonging to the GLI-Kruppel class of zinc finger proteins. The protein is involved in repressing and activating a diverse number of promoters. YY1 may direct histone deacetylases and histone acetyltransferases to a promoter in order to activate or repress the promoter, thus implicating histone modification in the function of YY1. [provided by RefSeq, Jul 2008]

Primary Disease Associations & Inheritance

Gabriele-de Vries syndromeMIM #617557
AD
192
ClinVar variants
82
Pathogenic / LP
0.99
pLI score· haploinsufficient
1
Active trials
Clinical SummaryYY1
🧬
Gene-Disease Validity (ClinGen)
complex neurodevelopmental disorder · ADDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 0.99). One damaged copy is likely sufficient to cause disease.
📋
ClinVar Variants
82 Pathogenic / Likely Pathogenic· 84 VUS of 192 total submissions
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Clinical Trials
1 active or recruiting trial — potential therapeutic options may be available

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Dual constrained — LoF & missense intolerant
LoF Constraint?LOEUF (Loss-of-function Observed/Expected Upper bound Fraction) is the upper bound of the 90% CI for LoF OE — the preferred gnomAD v4 metric. Lower = more intolerant to LoF. LOEUF < 0.35 = highly constrained.
0.20LOEUF
pLI 0.994
Z-score 3.60
OE 0.00 (0.000.20)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

Missense Constraint?Missense Z-score: standard deviations fewer missense variants observed vs. expected. Z > 3.09 (p < 0.001) = gene does not tolerate missense variation. OE missense < 0.6 is also considered constrained.
3.31Z-score
OE missense 0.40 (0.340.47)
97 obs / 241.8 exp
Constrained

Highly missense-constrained (top ~0.1%)

Observed / Expected Ratios?Shaded band = 90% confidence interval. Vertical tick = point estimate. Grey threshold line = gnomAD constraint cutoff for that variant class.
LoF OE?Ratio of observed to expected LoF variants. Upper CI bound (LOEUF) ≤ 0.35 = strong LoF constraint signal.0.00 (0.000.20)
00.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.40 (0.340.47)
00.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.1.20
01.21.6
LoF obs/exp: 0 / 15.1Missense obs/exp: 97 / 241.8Syn Z: -1.55

ClinVar Variant Classifications

192 submitted variants in ClinVar

Classification Summary

Pathogenic54
Likely Pathogenic28
VUS84
Likely Benign20
Benign2
Conflicting4
54
Pathogenic
28
Likely Pathogenic
84
VUS
20
Likely Benign
2
Benign
4
Conflicting

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
8
8
38
0
54
Likely Pathogenic
5
20
2
1
28
VUS
0
65
18
1
84
Likely Benign
0
1
6
13
20
Benign
0
2
0
0
2
Conflicting
4
Total13966415192

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

YY1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Gene2Phenotype Curations

YY1-related intellectual disability

definitive
ADUndeterminedUncertain
Dev. Disorders
G2P ↗

Gene2Phenotype curations · DECIPHER consortium patient cohort (public variants) · deciphergenomics.org

OMIM — Genotype-Phenotype Relationships

1 OMIM entry

Gabriele-de Vries syndrome

MIM #617557

Molecular basis of disorder known

Autosomal dominant
📖
GeneReview available — YY1
Authoritative clinical overview · NCBI Bookshelf · Recommended first read
Open GeneReview ↗
Clinical Literature
Landmark / reviewRecent case evidence