10-73383326-C-T

Variant names:

• chr10-73383326-C-T
• rs772390600
• NM_001156.5:c.767G>A

Variant summary

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

The NM_001156.5(ANXA7):​c.767G>A​(p.Arg256His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000137 in 1,461,244 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: ANXA7 NM_001156.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.75

Genes affected

ANXA7 (HGNC:545): (annexin A7) Annexin VII is a member of the annexin family of calcium-dependent phospholipid binding proteins.The Annexin VII gene contains 14 exons and spans approximately 34 kb of DNA. An alternatively spliced cassette exon results in two mRNA transcripts of 2.0 and 2.4 kb which are predicted to generate two protein isoforms differing in their N-terminal domain. The alternative splicing event is tissue specific and the mRNA containing the cassette exon is prevalent in brain, heart and skeletal muscle. The transcripts also differ in their 3'-non coding regions by the use of two alternative poly(A) signals. Annexin VII encodes a protein with a molecular weight of approximately 51 kDa with a unique, highly hydrophobic N-terminal domain of 167 amino acids and a conserved C-terminal region of 299 amino acids. The latter domain is composed of alternating hydrophobic and hydrophilic segments. Structural analysis of the protein suggests that Annexin VII is a membrane binding protein with diverse properties, including voltage-sensitive calcium channel activity, ion selectivity and membrane fusion. [provided by RefSeq, Jul 2008]

ENSG00000233144 (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=0.40034637).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANXA7	NM_001156.5	c.767G>A	p.Arg256His	missense_variant	Exon 9 of 13	ENST00000372921.10	NP_001147.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANXA7	ENST00000372921.10	c.767G>A	p.Arg256His	missense_variant	Exon 9 of 13	1	NM_001156.5	ENSP00000362012.4
ANXA7	ENST00000372919.8	c.833G>A	p.Arg278His	missense_variant	Exon 10 of 14	1		ENSP00000362010.4
ENSG00000233144	ENST00000427492.1	n.231C>T		non_coding_transcript_exon_variant	Exon 2 of 2	2
ANXA7	ENST00000492380.1	n.778G>A		non_coding_transcript_exon_variant	Exon 8 of 8	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000160 AC: 4 AN: 250300 Hom.: 0 AF XY: 0.0000222 AC XY: 3 AN XY: 135282

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000290

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000657

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000885

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000137 AC: 20 AN: 1461244 Hom.: 0 Cov.: 31 AF XY: 0.0000179 AC XY: 13 AN XY: 726828

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000756

Gnomad4 SAS exome AF: 0.0000580

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.00000630

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ExAC AF: 0.0000330 AC: 4

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Sep 14, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.833G>A (p.R278H) alteration is located in exon 10 (coding exon 9) of the ANXA7 gene. This alteration results from a G to A substitution at nucleotide position 833, causing the arginine (R) at amino acid position 278 to be replaced by a histidine (H). 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	0.092
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.51
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.15	.;T
Eigen	Benign	0.18
Eigen_PC	Benign	0.20
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.91	D;D
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.40	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.1	.;L
PrimateAI	Benign	0.48	T
PROVEAN	Benign	-0.98	N;N
REVEL	Benign	0.064
Sift	Benign	0.098	T;T
Sift4G	Benign	0.10	T;T
Polyphen		0.99	D;D
Vest4		0.48
MutPred		0.32		.;Loss of MoRF binding (P = 0.0618);
MVP		0.73
MPC		0.29
ClinPred		0.69	D
GERP RS		4.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.035

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: rs772390600; hg19: chr10-75143084; COSMIC: COSV65823056; COSMIC: COSV65823056;