H4C8

Chr 6

H4 clustered histone 8

Also known as: H4/h, H4FH, HIST1H4H

NCBI Gene: 8365ENSG00000158406UniProt: P62805

Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. Two molecules of each of the four core histones (H2A, H2B, H3, and H4) form an octamer, around which approximately 146 bp of DNA is wrapped in repeating units, called nucleosomes. The linker histone, H1, interacts with linker DNA between nucleosomes and functions in the compaction of chromatin into higher order structures. This gene is intronless and encodes a replication-dependent histone that is a member of the histone H4 family. Transcripts from this gene lack polyA tails but instead contain a palindromic termination element. This gene is found in the large histone gene cluster on chromosome 6. [provided by RefSeq, Aug 2015]

Primary Disease Associations & Inheritance

UniProtTessadori-Bicknell-Van Haaften neurodevelopmental syndrome 1
UniProtTessadori-Bicknell-Van Haaften neurodevelopmental syndrome 2
UniProtTessadori-Bicknell-Van Haaften neurodevelopmental syndrome 3
UniProtTessadori-Bicknell-Van Haaften neurodevelopmental syndrome 4
32
ClinVar variants
4
Pathogenic / LP
0.00
pLI score
0
Active trials
Clinical Summary— H4C8
⚡
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
4 Pathogenic / Likely Pathogenic· 27 VUS of 32 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

gnomAD
Tolerant — LoF & missense variants common in population
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.
1.96LOEUF
pLI 0.000
Z-score -1.80
OE 2.17 (0.93–1.96)
Tolerant

Highly tolerant — LoF variants common in population

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.
-1.72Z-score
OE missense 1.60 (1.36–1.86)
105 obs / 65.8 exp
Tolerant

Tolerant to missense variation

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.2.17 (0.93–1.96)
0≤0.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.1.60 (1.36–1.86)
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.2.94
0≤1.21.6
LoF obs/exp: 6 / 2.8Missense obs/exp: 105 / 65.8Syn Z: -7.39

ClinVar Variant Classifications

32 submitted variants in ClinVar

ClinVar

Classification Summary

Pathogenic4
VUS27
Likely Benign1
4
Pathogenic
27
VUS
1
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
4
0
4
Likely Pathogenic
0
0
0
0
0
VUS
0
17
10
0
27
Likely Benign
0
0
1
0
1
Benign
0
0
0
0
0
Total01715032

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

View in ClinVar →

Protein Context — Lollipop Plot

H4C8 · protein map & ClinVar variants

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

OMIM — Genotype-Phenotype Relationships

1 OMIM entry

OMIM
Clinical Literature
Landmark / reviewRecent case evidence
Key Publications
Landmark & review papers · by relevance
PubMed
Top 10 resultsSearch PubMed ↗
Recent Gene-Specific Literature
Gene in title · MEDLINE · newest first
Europe PMC

No open access results found

Top 5 resultsSearch Europe PMC ↗

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →

External Resources

Links to major genomics databases and tools