Genetic Variant NM_005249.5:c.39C>A (chr14-28767318-C-A) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP7

The NM_005249.5(FOXG1):c.39C>A(p.Ile13Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. I13I) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 30)

Exomes 𝑓: 7.6e-7 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

FOXG1
NM_005249.5 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.162

Publications

1 publications found

Variant links:

Genes affected

FOXG1 (HGNC:3811): (forkhead box G1) This locus encodes a member of the fork-head transcription factor family. The encoded protein, which functions as a transcriptional repressor, is highly expressed in neural tissues during brain development. Mutations at this locus have been associated with Rett syndrome and a diverse spectrum of neurodevelopmental disorders defined as part of the FOXG1 syndrome. This gene is disregulated in many types of cancer and is the target of multiple microRNAs that regulate the proliferation of tumor cells. [provided by RefSeq, Jul 2020]

FOXG1 links:

LINC01551 (HGNC:19828): (long intergenic non-protein coding RNA 1551)

LINC01551 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.31).

BP7

Synonymous conserved (PhyloP=0.162 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005249.5. 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
	FOXG1	NM_005249.5	MANE Select	c.39C>A	p.Ile13Ile	synonymous	Exon 1 of 1	NP_005240.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FOXG1	ENST00000313071.7	TSL:6 MANE Select	c.39C>A	p.Ile13Ile	synonymous	Exon 1 of 1	ENSP00000339004.3	P55316
FOXG1	ENST00000706482.1		c.39C>A	p.Ile13Ile	synonymous	Exon 2 of 2	ENSP00000516406.1	P55316
LINC01551	ENST00000675861.1		n.374+1305C>A		intron	N/A

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

211116

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

7.57e-7

AC:

AN:

1321148

Hom.:

Cov.:

AF XY:

0.00000152

AC XY:

AN XY:

657054

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

27680

American (AMR)

AF:

0.00

AC:

AN:

37160

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

20600

East Asian (EAS)

AF:

0.00

AC:

AN:

29566

South Asian (SAS)

AF:

0.00

AC:

AN:

80138

European-Finnish (FIN)

AF:

0.00

AC:

AN:

46302

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5030

European-Non Finnish (NFE)

AF:

9.77e-7

AC:

AN:

1023918

Other (OTH)

AF:

0.00

AC:

AN:

50754

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 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: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.31

CADD

Benign

(source)

DANN

Benign

0.96

PhyloP100

0.16

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over