10-70091866-C-A

Position:

• chr10-70091866-C-A

Variant summary

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

The ENST00000373255.9(MACROH2A2):​c.389C>A​(p.Pro130Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MACROH2A2 ENST00000373255.9 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.57

Genes affected

MACROH2A2 (HGNC:14453): (macroH2A.2 histone) 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 encodes a replication-independent histone that is a member of the histone H2A family. It replaces conventional H2A histones in a subset of nucleosomes where it represses transcription and may participate in stable X chromosome inactivation. [provided by RefSeq, Oct 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=0.12770337).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MACROH2A2	NM_018649.3	c.389C>A	p.Pro130Gln	missense_variant	4/9	ENST00000373255.9	NP_061119.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MACROH2A2	ENST00000373255.9	c.389C>A	p.Pro130Gln	missense_variant	4/9	1	NM_018649.3	ENSP00000362352	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 15, 2023

The c.389C>A (p.P130Q) alteration is located in exon 4 (coding exon 3) of the H2AFY2 gene. This alteration results from a C to A substitution at nucleotide position 389, causing the proline (P) at amino acid position 130 to be replaced by a glutamine (Q). 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
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.53
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.19	T
Eigen	Benign	0.034
Eigen_PC	Uncertain	0.24
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.80	T
M_CAP	Benign	0.0046	T
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.81	L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.61	T
PROVEAN	Uncertain	-2.7	D
REVEL	Benign	0.052
Sift	Benign	0.061	T
Sift4G	Uncertain	0.052	T
Polyphen		0.036	B
Vest4		0.29
MutPred		0.24		Loss of catalytic residue at P130 (P = 0.0029);
MVP		0.19
MPC		0.85
ClinPred		0.58	D
GERP RS		5.8
Varity_R		0.13
gMVP		0.63

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr10-71851622;