ANP32B

Chr 9

acidic nuclear phosphoprotein 32 family member B

Also known as: APRIL, PHAPI2, SSP29

NCBI Gene: 10541ENSG00000136938UniProt: Q92688

Enables RNA polymerase binding activity and histone binding activity. Involved in several processes, including negative regulation of apoptotic process; nucleosome assembly; and positive regulation of protein export from nucleus. Located in cytoplasm; nucleolus; and nucleoplasm. [provided by Alliance of Genome Resources, Jul 2025]

0
Active trials
33
Pathogenic / LP
61
ClinVar variants
1
Pubs (1 yr)
1.3
Missense Z
0.33
LOEUF· LoF intolerant
Clinical Summary— ANP32B
⚡
Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 0.96). One damaged copy is likely sufficient to cause disease.
📋
ClinVar Variants
33 Pathogenic / Likely Pathogenic· 23 VUS of 61 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
LoF intolerant — likely haploinsufficient
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.
0.33LOEUF
pLI 0.958
Z-score 3.26
OE 0.07 (0.02–0.33)
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.
1.27Z-score
OE missense 0.68 (0.56–0.81)
82 obs / 121.2 exp
Tolerant

Mild missense constraint

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.0.07 (0.02–0.33)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.68 (0.56–0.81)
0≤0.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.0.93
0≤1.21.6
LoF obs/exp: 1 / 14.3Missense obs/exp: 82 / 121.2Syn Z: 0.39
DN
0.4289th %ile
GOF
0.2597th %ile
LOF
0.66top 25%

The highest-scoring mechanism for this gene is loss-of-function (haploinsufficiency).

LOFprediction above median · LOEUF 0.33

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312. Mechanism ranking also informed by gnomAD constraint, ClinVar, and ClinGen data.

ClinVar Variant Classifications

61 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic29
Likely Pathogenic4
VUS23
Likely Benign2
Benign3
29
Pathogenic
4
Likely Pathogenic
23
VUS
2
Likely Benign
3
Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
29
0
29
Likely Pathogenic
0
0
4
0
4
VUS
0
19
4
0
23
Likely Benign
0
0
0
2
2
Benign
0
1
1
1
3
Total02038361

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

View in ClinVar →

Protein Context — Lollipop Plot

ANP32B · protein map & ClinVar variants

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

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →
Clinical Literature
Landmark / reviewRecent case evidence
Full-Text Mentions
NLP-detected gene mentions in article bodies · via PubTator3
PubTator3
Top 3 full-text resultsSearch PubTator3 ↗
Key Publications
Landmark & review papers · by relevance
PubMed
Top 5 results · since 2015Search PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC
Top 5 resultsSearch Europe PMC ↗

External Resources

Links to major genomics databases and tools

Franklin by Genoox
AI-powered variant curation and clinical analysis
DECIPHER
Genomic variants and phenotypes in rare disease patients