Genetic Variant H2AC15:p.Lys16Asn (chr6-27838292-C-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM1PM2

The NM_003510.3(H2AC15):c.48G>C(p.Lys16Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000137 in 1,455,186 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

H2AC15
NM_003510.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.87

Publications

3 publications found

Variant links:

Genes affected

H2AC15 (HGNC:4726): (H2A clustered histone 15) 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 H2A family. Transcripts from this gene lack polyA tails but instead contain a palindromic termination element. This gene is found in the small histone gene cluster on chromosome 6p22-p21.3. [provided by RefSeq, Aug 2015]

H2AC15 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM1

In a cross_link Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) (size 0) in uniprot entity H2A1_HUMAN

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
H2AC15	NM_003510.3 link	c.48G>C	p.Lys16Asn	missense_variant	Exon 1 of 1	ENST00000618958.2	NP_003501.1	P0C0S8A4FTV9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
H2AC15	ENST00000618958.2 link	c.48G>C	p.Lys16Asn	missense_variant	Exon 1 of 1	6	NM_003510.3	ENSP00000482431.2		P0C0S8
H2AC15	ENST00000718365.1 link	c.48G>C	p.Lys16Asn	missense_variant	Exon 1 of 1			ENSP00000520791.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000243

AC:

AN:

247080

AF XY:

0.0000224

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.0000137

AC:

AN:

1455186

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

723198

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33284

American (AMR)

AF:

0.00

AC:

AN:

43832

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25654

East Asian (EAS)

AF:

0.00

AC:

AN:

39598

South Asian (SAS)

AF:

0.0000932

AC:

AN:

85854

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53236

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5736

European-Non Finnish (NFE)

AF:

0.00000812

AC:

AN:

1108026

Other (OTH)

AF:

0.0000500

AC:

AN:

59966

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 26, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.48G>C (p.K16N) alteration is located in exon 1 (coding exon 1) of the HIST1H2AK gene. This alteration results from a G to C substitution at nucleotide position 48, causing the lysine (K) at amino acid position 16 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.12

CADD

Benign

(source)

DANN

Benign

0.86

Eigen

Uncertain

0.22

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Uncertain

0.87

LIST_S2

Benign

0.84

M_CAP

Benign

0.018

MetaRNN

Uncertain

0.64

MetaSVM

Benign

-0.71

PhyloP100

3.9

PrimateAI

Pathogenic

0.87

Sift4G

Benign

0.16

Vest4

0.73

MVP

0.32

ClinPred

0.87

GERP RS

4.5

PromoterAI

0.00010

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

gMVP

0.13

Mutation Taster

=73/27

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

6-27838292-C-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over