rs13428251

Positions:

• chr2-69787429-G-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001153.5(ANXA4):​c.10-625G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.253 in 152,104 control chromosomes in the GnomAD database, including 4,897 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.25 (4897 hom., cov: 33)
• Consequence: ANXA4 NM_001153.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.380

Genes affected

ANXA4 (HGNC:542): (annexin A4) Annexin IV (ANX4) belongs to the annexin family of calcium-dependent phospholipid binding proteins. Although their functions are still not clearly defined, several members of the annexin family have been implicated in membrane-related events along exocytotic and endocytotic pathways. ANX4 has 45 to 59% identity with other members of its family and shares a similar size and exon-intron organization. Isolated from human placenta, ANX4 encodes a protein that has possible interactions with ATP, and has in vitro anticoagulant activity and also inhibits phospholipase A2 activity. ANX4 is almost exclusively expressed in epithelial cells. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2016]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.0).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.319 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ANXA4	NM_001153.5	c.10-625G>C		intron_variant		ENST00000394295.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ANXA4	ENST00000394295.6	c.10-625G>C		intron_variant		1	NM_001153.5	P1

Frequencies

GnomAD3 genomes AF: 0.253 AC: 38410 AN: 151986 Hom.: 4889 Cov.: 33

Gnomad AFR AF: 0.273

Gnomad AMI AF: 0.0954

Gnomad AMR AF: 0.254

Gnomad ASJ AF: 0.306

Gnomad EAS AF: 0.331

Gnomad SAS AF: 0.282

Gnomad FIN AF: 0.271

Gnomad MID AF: 0.225

Gnomad NFE AF: 0.229

Gnomad OTH AF: 0.252

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.253 AC: 38441 AN: 152104 Hom.: 4897 Cov.: 33 AF XY: 0.256 AC XY: 19025 AN XY: 74344

Gnomad4 AFR AF: 0.273

Gnomad4 AMR AF: 0.254

Gnomad4 ASJ AF: 0.306

Gnomad4 EAS AF: 0.332

Gnomad4 SAS AF: 0.281

Gnomad4 FIN AF: 0.271

Gnomad4 NFE AF: 0.229

Gnomad4 OTH AF: 0.250

Alfa AF: 0.237 Hom.: 526

Bravo AF: 0.253

Asia WGS AF: 0.294 AC: 1021 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.62
DANN	Benign	0.64

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: rs13428251; hg19: chr2-70014561;