6-6266615-G-C

Variant names:

• chr6-6266615-G-C
• rs121913065
• NM_000129.4:c.514C>G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_000129.4(F13A1):​c.514C>G​(p.Arg172Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: F13A1 NM_000129.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.34
• Publications: 0 publications found

Genes affected

F13A1 (HGNC:3531): (coagulation factor XIII A chain) This gene encodes the coagulation factor XIII A subunit. Coagulation factor XIII is the last zymogen to become activated in the blood coagulation cascade. Plasma factor XIII is a heterotetramer composed of 2 A subunits and 2 B subunits. The A subunits have catalytic function, and the B subunits do not have enzymatic activity and may serve as plasma carrier molecules. Platelet factor XIII is comprised only of 2 A subunits, which are identical to those of plasma origin. Upon cleavage of the activation peptide by thrombin and in the presence of calcium ion, the plasma factor XIII dissociates its B subunits and yields the same active enzyme, factor XIIIa, as platelet factor XIII. This enzyme acts as a transglutaminase to catalyze the formation of gamma-glutamyl-epsilon-lysine crosslinking between fibrin molecules, thus stabilizing the fibrin clot. It also crosslinks alpha-2-plasmin inhibitor, or fibronectin, to the alpha chains of fibrin. Factor XIII deficiency is classified into two categories: type I deficiency, characterized by the lack of both the A and B subunits; and type II deficiency, characterized by the lack of the A subunit alone. These defects can result in a lifelong bleeding tendency, defective wound healing, and habitual abortion. [provided by RefSeq, Jul 2008]

F13A1 Gene-Disease associations (from GenCC):

• factor XIII, A subunit, deficiency of

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), ClinGen
• congenital factor XIII deficiency

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.863

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000129.4. 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
	F13A1	NM_000129.4	MANE Select	c.514C>G	p.Arg172Gly	missense	Exon 4 of 15	NP_000120.2	P00488

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	F13A1	ENST00000264870.8	TSL:1 MANE Select	c.514C>G	p.Arg172Gly	missense	Exon 4 of 15	ENSP00000264870.3	P00488
	F13A1	ENST00000950947.1		c.514C>G	p.Arg172Gly	missense	Exon 3 of 14	ENSP00000621006.1
	F13A1	ENST00000878383.1		c.325C>G	p.Arg109Gly	missense	Exon 3 of 14	ENSP00000548442.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461886 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727246

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: 8.99e-7 AC: 1 AN: 1112004

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

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.040
CADD	Benign	23
DANN	Uncertain	0.99
Eigen	Benign	0.098
Eigen_PC	Benign	0.020
FATHMM_MKL	Uncertain	0.82	D
M_CAP	Uncertain	0.24	D
MetaRNN	Pathogenic	0.86	D
MetaSVM	Uncertain	0.32	D
PhyloP100		2.3
PrimateAI	Uncertain	0.58	T
PROVEAN	Uncertain	-3.4	D
REVEL	Uncertain	0.63
Sift	Uncertain	0.019	D
Sift4G	Benign	0.12	T
Vest4		0.92
MutPred		0.58		Loss of sheet (P = 0.0315)
MVP		0.90
MPC		0.95
ClinPred		0.97	D
GERP RS		4.8
gMVP		0.86
Mutation Taster		=30/70	disease causing

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: rs121913065; hg19: chr6-6266848; COSMIC: COSV53554927; COSMIC: COSV53554927;