6-27865490-G-A

Variant names:

• chr6-27865490-G-A
• rs774677441
• NM_003511.3:c.136G>A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP2

The NM_003511.3(H2AC16):​c.136G>A​(p.Ala46Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. A46S) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: H2AC16 NM_003511.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.60
• Publications: 0 publications found

Genes affected

H2AC16 (HGNC:4730): (H2A clustered histone 16) 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]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 1 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Trascript score misZ: -0.66371 (below the threshold of 3.09).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003511.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	H2AC16	NM_003511.3	MANE Select	c.136G>A	p.Ala46Thr	missense	Exon 1 of 1	NP_003502.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	H2AC16	ENST00000613174.2	TSL:6 MANE Select	c.136G>A	p.Ala46Thr	missense	Exon 1 of 1	ENSP00000482538.2	P0C0S8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.71
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Uncertain	24
DANN	Uncertain	0.99
Eigen	Uncertain	0.30
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Benign	0.11	N
M_CAP	Benign	0.012	T
MetaRNN	Uncertain	0.70	D
MetaSVM	Uncertain	-0.065	T
PhyloP100		7.6
PrimateAI	Uncertain	0.70	T
Sift4G	Benign	0.15	T
Vest4		0.65
MVP		0.16
ClinPred		0.99	D
GERP RS		4.9
PromoterAI		-0.021	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
gMVP		0.069
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs774677441; hg19: chr6-27833268;