NM_000129.4:c.103G>A

Variant names:

• chr6-6318562-C-T
• rs5985
• NM_000129.4:c.103G>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000129.4(F13A1):​c.103G>A​(p.Val35Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000144 in 1,461,436 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V35L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.000014 (1 hom.)
• Consequence: F13A1 NM_000129.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.148
• Publications: 553 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: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, ClinGen
• congenital factor XIII deficiency

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000309672 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10349342).

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	F13A1	NM_000129.4	MANE Select	c.103G>A	p.Val35Met	missense	Exon 2 of 15	NP_000120.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	F13A1	ENST00000264870.8	TSL:1 MANE Select	c.103G>A	p.Val35Met	missense	Exon 2 of 15	ENSP00000264870.3
	F13A1	ENST00000950947.1		c.103G>A	p.Val35Met	missense	Exon 1 of 14	ENSP00000621006.1
	F13A1	ENST00000878383.1		c.103G>A	p.Val35Met	missense	Exon 2 of 14	ENSP00000548442.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD2 exomes AF: 0.0000239 AC: 6 AN: 250876 AF XY: 0.0000295

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000290

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000109

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000144 AC: 21 AN: 1461436 Hom.: 1 Cov.: 38 AF XY: 0.0000138 AC XY: 10 AN XY: 727016

African (AFR) AF: 0.0000299 AC: 1 AN: 33458

American (AMR) AF: 0.0000448 AC: 2 AN: 44666

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26118

East Asian (EAS) AF: 0.000126 AC: 5 AN: 39700

South Asian (SAS) AF: 0.0000696 AC: 6 AN: 86172

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53386

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

European-Non Finnish (NFE) AF: 0.00000540 AC: 6 AN: 1111834

Other (OTH) AF: 0.0000166 AC: 1 AN: 60360

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 20362

ExAC AF: 0.0000330 AC: 4

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.096
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	0.58
DANN	Benign	0.96
DEOGEN2	Benign	0.021	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.017	N
LIST_S2	Benign	0.39	T
M_CAP	Benign	0.038	D
MetaRNN	Benign	0.10	T
MetaSVM	Benign	-0.95	T
PhyloP100		-0.15
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-0.60	N
REVEL	Benign	0.16
Sift	Benign	0.097	T
Sift4G	Benign	0.11	T
Vest4		0.19
MutPred		0.52		Loss of sheet (P = 0.0817)
MVP		0.60
MPC		0.25
ClinPred		0.022	T
GERP RS		1.9
gMVP		0.24
Mutation Taster		=99/1	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: rs5985; hg19: chr6-6318795;