chr1-173911829-A-G

Variant names:

• chr1-173911829-A-G
• rs183416252
• NM_000488.4:c.594T>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4 BP7

This summary comes from the ClinGen Evidence Repository: The c.594T>C (NM_000488.4) variant in SERPINC1 does not code for a different amino acid (p.Tyr198=). SpliceAI predicts no splicing impact for this variant meeting BP4. The variant is not predicted to cause a splicing impact and the nucleotide is weakly/moderately conserved with a PhyloP score of 0.025 meeting BP7 criteria (PhyloP < 0.1). In summary, this variant meets criteria to be classified as likely benign. ACMG/AMP criteria applied, as specified by the Thrombosis Variant Curation Expert Panel for SERPINC1: BP4, BP7. LINK:https://erepo.genome.network/evrepo/ui/classification/CA1251397/MONDO:0013144/084

• Frequency:
  • Genomes: 𝑓 0.000046 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000024 (0 hom.)
• Consequence: SERPINC1 NM_000488.4 synonymous
• Clinical Significance: Likely benign reviewed by expert panel U:1 B:2
• Conservation: PhyloP100: 0.104
• Publications: 1 publications found

Genes affected

SERPINC1 (HGNC:775): (serpin family C member 1) The protein encoded by this gene, antithrombin III, is a plasma protease inhibitor and a member of the serpin superfamily. This protein inhibits thrombin as well as other activated serine proteases of the coagulation system, and it regulates the blood coagulation cascade. The protein includes two functional domains: the heparin binding-domain at the N-terminus of the mature protein, and the reactive site domain at the C-terminus. The inhibitory activity is enhanced by the presence of heparin. Numerous mutations have been identified for this gene, many of which are known to cause antithrombin-III deficiency which constitutes a strong risk factor for thrombosis. A reduction in the serum level of this protein is associated with severe cases of Coronavirus Disease 19 (COVID-19). [provided by RefSeq, Sep 2020]

SERPINC1 Gene-Disease associations (from GenCC):

• hereditary antithrombin deficiency

  Inheritance: AD, AR, SD Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia, Genomics England PanelApp, Orphanet, ClinGen

ACMG classification

Specifications for SERPINC1 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: For more information check the summary or visit ClinGen Evidence Repository.
• BP7: For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000488.4. 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
	SERPINC1	NM_000488.4	MANE Select	c.594T>C	p.Tyr198Tyr	synonymous	Exon 3 of 7	NP_000479.1	P01008
	SERPINC1	NM_001386302.1		c.594T>C	p.Tyr198Tyr	synonymous	Exon 3 of 7	NP_001373231.1
	SERPINC1	NM_001386303.1		c.675T>C	p.Tyr225Tyr	synonymous	Exon 4 of 8	NP_001373232.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SERPINC1	ENST00000367698.4	TSL:1 MANE Select	c.594T>C	p.Tyr198Tyr	synonymous	Exon 3 of 7	ENSP00000356671.3	P01008
	SERPINC1	ENST00000874328.1		c.594T>C	p.Tyr198Tyr	synonymous	Exon 3 of 7	ENSP00000544387.1
	SERPINC1	ENST00000874324.1		c.594T>C	p.Tyr198Tyr	synonymous	Exon 3 of 7	ENSP00000544383.1

Frequencies

GnomAD3 genomes AF: 0.0000460 AC: 7 AN: 152216 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000882

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000358 AC: 9 AN: 251482 AF XY: 0.0000441

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000791

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000239 AC: 35 AN: 1461878 Hom.: 0 Cov.: 32 AF XY: 0.0000179 AC XY: 13 AN XY: 727236

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000315 AC: 35 AN: 1111996

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.0000460 AC: 7 AN: 152334 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74498

African (AFR) AF: 0.0000241 AC: 1 AN: 41570

American (AMR) AF: 0.00 AC: 0 AN: 15298

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10628

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000882 AC: 6 AN: 68028

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.0000434 Hom.: 0

Bravo AF: 0.0000378

EpiCase AF: 0.00

EpiControl AF: 0.000356

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	1	2	Hereditary antithrombin deficiency (3)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.56
CADD	Benign	2.8
DANN	Benign	0.29
PhyloP100		0.10
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: rs183416252; hg19: chr1-173880967; COSMIC: COSV62929373; COSMIC: COSV62929373;