Genetic Variant NM_015082.2:c.2470C>A (chr5-133199154-G-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_StrongBP7

The NM_015082.2(FSTL4):c.2470C>A(p.Arg824Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 151,862 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

FSTL4
NM_015082.2 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.14

Publications

3 publications found

Variant links:

Genes affected

FSTL4 (HGNC:21389): (follistatin like 4) Predicted to enable brain-derived neurotrophic factor binding activity and calcium ion binding activity. Predicted to be involved in cell differentiation. Predicted to act upstream of or within negative regulation of brain-derived neurotrophic factor receptor signaling pathway; negative regulation of collateral sprouting; and negative regulation of dendritic spine development. Predicted to be located in extracellular region and secretory granule. [provided by Alliance of Genome Resources, Apr 2022]

FSTL4 links:

ENSG00000248245 (HGNC:):

ENSG00000248245 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.7).

BP7

Synonymous conserved (PhyloP=3.14 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015082.2. 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
	FSTL4	NM_015082.2	MANE Select	c.2470C>A	p.Arg824Arg	synonymous	Exon 16 of 16	NP_055897.1	Q6MZW2-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FSTL4	ENST00000265342.12	TSL:5 MANE Select	c.2470C>A	p.Arg824Arg	synonymous	Exon 16 of 16	ENSP00000265342.7	Q6MZW2-1
FSTL4	ENST00000897474.1		c.2572C>A	p.Arg858Arg	synonymous	Exon 15 of 15	ENSP00000567533.1
FSTL4	ENST00000897473.1		c.2443C>A	p.Arg815Arg	synonymous	Exon 15 of 15	ENSP00000567532.1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151862

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000946

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1449328

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

718874

African (AFR)

AF:

0.00

AC:

AN:

33322

American (AMR)

AF:

0.00

AC:

AN:

44306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25494

East Asian (EAS)

AF:

0.00

AC:

AN:

39474

South Asian (SAS)

AF:

0.00

AC:

AN:

84704

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53074

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5632

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1103556

Other (OTH)

AF:

0.00

AC:

AN:

59766

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151862

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74164

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

41316

American (AMR)

AF:

0.00

AC:

AN:

15248

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5154

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.0000946

AC:

AN:

10576

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67968

Other (OTH)

AF:

0.00

AC:

AN:

2088

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.70

CADD

Benign

6.1

(source)

DANN

Benign

0.68

PhyloP100

3.1

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over