chr11-64207405-C-G

Position:

• chr11-64207405-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_031471.6(FERMT3):​c.41C>G​(p.Ser14Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. S14S) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: FERMT3 NM_031471.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.28

Genes affected

FERMT3 (HGNC:23151): (FERM domain containing kindlin 3) Kindlins are a small family of proteins that mediate protein-protein interactions involved in integrin activation and thereby have a role in cell adhesion, migration, differentiation, and proliferation. The protein encoded by this gene has a key role in the regulation of hemostasis and thrombosis. This protein may also help maintain the membrane skeleton of erythrocytes. Mutations in this gene cause the autosomal recessive leukocyte adhesion deficiency syndrome-III (LAD-III). Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jan 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FERMT3	NM_031471.6	c.41C>G	p.Ser14Trp	missense_variant	2/15	ENST00000345728.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FERMT3	ENST00000345728.10	c.41C>G	p.Ser14Trp	missense_variant	2/15	1	NM_031471.6	P4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Leukocyte adhesion deficiency 3 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 23, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C15"). ClinVar contains an entry for this variant (Variation ID: 643214). This variant has not been reported in the literature in individuals affected with FERMT3-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces serine, which is neutral and polar, with tryptophan, which is neutral and slightly polar, at codon 14 of the FERMT3 protein (p.Ser14Trp). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.71
BayesDel_addAF	Benign	-0.042	T
BayesDel_noAF	Benign	-0.30
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.072	T;D;.
Eigen	Uncertain	0.39
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Uncertain	0.96	D;D;D
M_CAP	Benign	0.058	D
MetaRNN	Uncertain	0.44	T;T;T
MetaSVM	Benign	-0.71	T
MutationAssessor	Benign	1.1	.;L;L
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.81	D
PROVEAN	Uncertain	-2.9	D;N;N
REVEL	Benign	0.19
Sift	Uncertain	0.0010	D;D;D
Sift4G	Uncertain	0.0090	D;D;D
Polyphen		0.99, 1.0	.;D;D
Vest4		0.57, 0.58
MutPred		0.38		Loss of disorder (P = 0.0354);Loss of disorder (P = 0.0354);Loss of disorder (P = 0.0354);
MVP		0.68
MPC		1.3
ClinPred		0.98	D
GERP RS		4.0
Varity_R		0.68
gMVP		0.49

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: rs778799174; hg19: chr11-63974877;