NM_001457.4:c.1869C>A

Variant names:

• chr3-58106801-C-A
• NM_001457.4:c.1869C>A

Variant summary

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

The NM_001457.4(FLNB):​c.1869C>A​(p.Asp623Glu) 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 1,461,830 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. D623D) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: FLNB NM_001457.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.308

Genes affected

FLNB (HGNC:3755): (filamin B) This gene encodes a member of the filamin family. The encoded protein interacts with glycoprotein Ib alpha as part of the process to repair vascular injuries. The platelet glycoprotein Ib complex includes glycoprotein Ib alpha, and it binds the actin cytoskeleton. Mutations in this gene have been found in several conditions: atelosteogenesis type 1 and type 3; boomerang dysplasia; autosomal dominant Larsen syndrome; and spondylocarpotarsal synostosis syndrome. Multiple alternatively spliced transcript variants that encode different protein isoforms have been described for this gene. [provided by RefSeq, Nov 2009]

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 rank	MANE	Protein	UniProt
FLNB	NM_001457.4	c.1869C>A	p.Asp623Glu	missense_variant	Exon 12 of 46	ENST00000295956.9	NP_001448.2
FLNB	NM_001164317.2	c.1869C>A	p.Asp623Glu	missense_variant	Exon 12 of 47		NP_001157789.1
FLNB	NM_001164318.2	c.1869C>A	p.Asp623Glu	missense_variant	Exon 12 of 46		NP_001157790.1
FLNB	NM_001164319.2	c.1869C>A	p.Asp623Glu	missense_variant	Exon 12 of 45		NP_001157791.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FLNB	ENST00000295956.9	c.1869C>A	p.Asp623Glu	missense_variant	Exon 12 of 46	1	NM_001457.4	ENSP00000295956.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461830 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727222

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.63
BayesDel_addAF	Uncertain	0.085	D
BayesDel_noAF	Benign	-0.12
CADD	Benign	8.1
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.70	.;D;.;.;.
Eigen	Benign	-0.94
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.53	D
LIST_S2	Uncertain	0.96	D;D;D;D;D
M_CAP	Uncertain	0.14	D
MetaRNN	Uncertain	0.52	D;D;D;D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Benign	1.8	L;L;L;L;.
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-2.4	N;N;N;N;N
REVEL	Uncertain	0.62
Sift	Uncertain	0.016	D;D;D;D;D
Sift4G	Benign	0.097	T;T;T;T;D
Polyphen		1.0	.;D;D;.;D
Vest4		0.52
MutPred		0.54		Gain of sheet (P = 0.039);Gain of sheet (P = 0.039);Gain of sheet (P = 0.039);Gain of sheet (P = 0.039);.;
MVP		0.82
MPC		0.87
ClinPred		0.94	D
GERP RS		-12
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.25
gMVP		0.69

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-58092528;