1-228458157-G-T

Variant names:

• chr1-228458157-G-T
• rs202224166
• NM_175055.3:c.28G>T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_175055.3(H2BC26):​c.28G>T​(p.Ala10Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000206 in 1,458,472 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A10T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: H2BC26 NM_175055.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.62

Genes affected

H2BC26 (HGNC:20514): (H2B clustered histone 26) Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. Nucleosomes consist of approximately 146 bp of DNA wrapped around a histone octamer composed of pairs of each of the four core histones (H2A, H2B, H3, and H4). The chromatin fiber is further compacted through the interaction of a linker histone, H1, with the DNA between the nucleosomes to form higher order chromatin structures. This gene is intronless and encodes a replication-dependent histone that is a member of the histone H2B family. Transcripts from this gene contain a palindromic termination element. [provided by RefSeq, Aug 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.1911673).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
H2BC26	NM_175055.3	c.28G>T	p.Ala10Ser	missense_variant	Exon 1 of 1	ENST00000693095.1	NP_778225.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
H2BC26	ENST00000693095.1	c.28G>T	p.Ala10Ser	missense_variant	Exon 1 of 1		NM_175055.3	ENSP00000509901.1
H2BC26	ENST00000620438.2	c.28G>T	p.Ala10Ser	missense_variant	Exon 1 of 1	6		ENSP00000479284.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000806 AC: 2 AN: 248290 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 134210

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000291

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000206 AC: 3 AN: 1458472 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 725510

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000225

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.01e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.031	T
BayesDel_noAF	Uncertain	-0.020
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.048	T
Eigen	Benign	-0.23
Eigen_PC	Benign	-0.21
FATHMM_MKL	Uncertain	0.79	D
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.19	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.4	M
PrimateAI	Uncertain	0.77	T
Sift4G	Benign	0.30	T
Polyphen		0.0090	B
Vest4		0.32
MutPred		0.25		Gain of phosphorylation at A10 (P = 0.0015);
MVP		0.50
ClinPred		0.90	D
GERP RS		4.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.14
gMVP		0.21

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs202224166; hg19: chr1-228645858;