chr4-121683402-G-T

Variant names:

• chr4-121683402-G-T
• rs763889812
• NM_001154.4:c.265C>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001154.4(ANXA5):​c.265C>A​(p.Arg89Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,456,300 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: ANXA5 NM_001154.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.274
• Publications: 0 publications found

Genes affected

ANXA5 (HGNC:543): (annexin A5) The Annexin 5 gene spans 29 kb containing 13 exons, and encodes a single transcript of approximately 1.6 kb and a protein product with a molecular weight of about 35 kDa.The protein encoded by this gene belongs to the annexin family of calcium-dependent phospholipid binding proteins some of which have been implicated in membrane-related events along exocytotic and endocytotic pathways. Annexin 5 is a phospholipase A2 and protein kinase C inhibitory protein with calcium channel activity and a potential role in cellular signal transduction, inflammation, growth and differentiation. Annexin 5 has also been described as placental anticoagulant protein I, vascular anticoagulant-alpha, endonexin II, lipocortin V, placental protein 4 and anchorin CII. Polymorphisms in this gene have been implicated in various obstetric complications. [provided by RefSeq, Dec 2019]

ANXA5 Gene-Disease associations (from GenCC):

• pregnancy loss, recurrent, susceptibility to, 3

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.67).
• BP7: Synonymous conserved (PhyloP=0.274 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANXA5	NM_001154.4	c.265C>A	p.Arg89Arg	synonymous_variant	Exon 5 of 13	ENST00000296511.10	NP_001145.1
ANXA5	XM_017008141.3	c.265C>A	p.Arg89Arg	synonymous_variant	Exon 5 of 7		XP_016863630.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANXA5	ENST00000296511.10	c.265C>A	p.Arg89Arg	synonymous_variant	Exon 5 of 13	1	NM_001154.4	ENSP00000296511.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1456300 Hom.: 0 Cov.: 29 AF XY: 0.00000138 AC XY: 1 AN XY: 724610

African (AFR) AF: 0.00 AC: 0 AN: 33186

American (AMR) AF: 0.00 AC: 0 AN: 44228

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26006

East Asian (EAS) AF: 0.00 AC: 0 AN: 39384

South Asian (SAS) AF: 0.00 AC: 0 AN: 85546

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53280

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5742

European-Non Finnish (NFE) AF: 9.02e-7 AC: 1 AN: 1108836

Other (OTH) AF: 0.00 AC: 0 AN: 60092

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.67
CADD	Benign	7.7
DANN	Benign	0.60
PhyloP100		0.27

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		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: rs763889812; hg19: chr4-122604557;