rs377298445

Variant names:

• chr6-26234281-G-A
• rs377298445
• NM_005320.3:c.653C>T

Your query was ambiguous. Multiple possible variants found:

• chr6-26234281-G-A
• chr6-26234281-G-C
• chr6-26234281-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_005320.3(H1-3):​c.653C>T​(p.Pro218Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. P218R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: H1-3 NM_005320.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.73

Genes affected

H1-3 (HGNC:4717): (H1.3 linker histone, cluster member) Histones are basic nuclear proteins responsible for 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 H1 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]

ENSG00000291336 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.36267042).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
H1-3	NM_005320.3	c.653C>T	p.Pro218Leu	missense_variant	Exon 1 of 1	ENST00000244534.7	NP_005311.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
H1-3	ENST00000244534.7	c.653C>T	p.Pro218Leu	missense_variant	Exon 1 of 1	6	NM_005320.3	ENSP00000244534.6
ENSG00000291336	ENST00000707189.1	n.999+110110G>A		intron_variant	Intron 1 of 1
ENSG00000291338	ENST00000707191.1	n.1000+76160G>A		intron_variant	Intron 1 of 1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Uncertain	0.043	T
BayesDel_noAF	Benign	-0.18
CADD	Benign	21
DANN	Benign	0.95
DEOGEN2	Uncertain	0.47	T
Eigen	Benign	-0.13
Eigen_PC	Benign	-0.058
FATHMM_MKL	Benign	0.22	N
LIST_S2	Benign	0.34	T
M_CAP	Benign	0.040	D
MetaRNN	Benign	0.36	T
MetaSVM	Benign	-0.71	T
MutationAssessor	Uncertain	2.7	M
PrimateAI	Benign	0.30	T
PROVEAN	Uncertain	-3.4	D
REVEL	Benign	0.26
Sift	Benign	0.071	T
Sift4G	Uncertain	0.0070	D
Polyphen		0.61	P
Vest4		0.44
MutPred		0.33		Loss of glycosylation at P218 (P = 0.0031);
MVP		0.36
ClinPred		0.99	D
GERP RS		5.2
Varity_R		0.17
gMVP		0.0031

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

LitVar

Other links and lift over

dbSNP: rs377298445; hg19: chr6-26234509;