Genetic Variant FBLIM1:p.Ala347Thr (chr1-15774945-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001024215.1(FBLIM1):c.1039G>A(p.Ala347Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000065 in 1,523,568 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A347V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000068 ( 0 hom. )

Consequence

FBLIM1
NM_001024215.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.00

Variant links:

Genes affected

FBLIM1 (HGNC:24686): (filamin binding LIM protein 1) This gene encodes a protein with an N-terminal filamin-binding domain, a central proline-rich domain, and, multiple C-terminal LIM domains. This protein localizes at cell junctions and may link cell adhesion structures to the actin cytoskeleton. This protein may be involved in the assembly and stabilization of actin-filaments and likely plays a role in modulating cell adhesion, cell morphology and cell motility. This protein also localizes to the nucleus and may affect cardiomyocyte differentiation after binding with the CSX/NKX2-5 transcription factor. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

FBLIM1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05704385).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FBLIM1	NM_017556.4 link	c.890+149G>A		intron_variant	Intron 7 of 8	ENST00000375766.8	NP_060026.2	Q8WUP2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FBLIM1	ENST00000441801.6 link	c.1039G>A	p.Ala347Thr	missense_variant	Exon 6 of 6	1		ENSP00000416387.2	Q8WUP2-2
FBLIM1	ENST00000375766.8 link	c.890+149G>A		intron_variant	Intron 7 of 8	2	NM_017556.4	ENSP00000364921.3	Q8WUP2-1
FBLIM1	ENST00000375771.5 link	c.890+149G>A		intron_variant	Intron 8 of 9	1		ENSP00000364926.1	Q8WUP2-1
FBLIM1	ENST00000332305.5 link	c.599+149G>A		intron_variant	Intron 3 of 4	2		ENSP00000364920.2	Q8WUP2-3

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000215

AC:

AN:

139808

Hom.:

AF XY:

0.0000272

AC XY:

AN XY:

73546

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000440

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000895

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000187

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000678

AC:

AN:

1371472

Hom.:

Cov.:

AF XY:

0.0000741

AC XY:

AN XY:

674416

show subpopulations

Gnomad4 AFR exome

AF:

0.0000966

Gnomad4 AMR exome

AF:

0.0000293

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000282

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000820

Gnomad4 OTH exome

AF:

0.0000176

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152096

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74292

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.0000656

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000529

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000690

AC:

ExAC

AF:

0.00000963

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 21, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1039G>A (p.A347T) alteration is located in exon 6 (coding exon 5) of the FBLIM1 gene. This alteration results from a G to A substitution at nucleotide position 1039, causing the alanine (A) at amino acid position 347 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-0.82

CADD

Benign

0.59

DANN

Benign

0.90

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.0024

LIST_S2

Benign

0.55

M_CAP

Benign

0.0016

MetaRNN

Benign

0.057

MetaSVM

Benign

-1.0

PROVEAN

Benign

-0.47

REVEL

Benign

0.014

Sift

Benign

0.081

Sift4G

Benign

0.59

Polyphen

0.0

Vest4

0.063

MVP

0.048

MPC

0.23

ClinPred

0.023

GERP RS

-1.1

gMVP

0.27

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over