rs1555321237

Positions:

• chr14-28767493-C-T

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_005249.5(FOXG1):​c.214C>T​(p.Gln72Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: FOXG1 NM_005249.5 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 1.96

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]

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

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 241 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 14-28767493-C-T is Pathogenic according to our data. Variant chr14-28767493-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 487210.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr14-28767493-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FOXG1	NM_005249.5	c.214C>T	p.Gln72Ter	stop_gained	1/1	ENST00000313071.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FOXG1	ENST00000313071.7	c.214C>T	p.Gln72Ter	stop_gained	1/1		NM_005249.5	P1
FOXG1	ENST00000706482.1	c.214C>T	p.Gln72Ter	stop_gained	2/2			P1
LINC01551	ENST00000675861.1	n.374+1480C>T		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 889596 Hom.: 0 Cov.: 16 AF XY: 0.00 AC XY: 0 AN XY: 424224

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: 0.00

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Rett syndrome, congenital variant Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Institute of Human Genetics, University of Leipzig Medical Center	Jan 20, 2018	- -
Pathogenic, criteria provided, single submitter	clinical testing	Invitae	May 26, 2017	For these reasons, this variant has been classified as Pathogenic. Multiple truncations downstream of this variant have been determined to be pathogenic (PMID: 24836831). This suggests that deletion of this region of the FOXG1 protein is causative of disease. This variant has not been reported in the literature in individuals with a FOXG1-related disease. While this variant is not present in population databases, the frequency information is unreliable, as metrics indicate poor data quality at this position in the ExAC database. This sequence change results in a premature translational stop signal in the FOXG1 gene (p.Gln72*). While this is not anticipated to result in nonsense mediated decay, it is expected to delete the last 418 amino acids of the FOXG1 protein. -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Nov 01, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.44
CADD	Pathogenic	36
DANN	Uncertain	1.0
Eigen	Benign	0.11
Eigen_PC	Benign	-0.21
FATHMM_MKL	Benign	0.22	N
MutationTaster	Benign	1.0	D;D
Vest4		0.47
GERP RS		1.1

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

LitVar

Other links and lift over

dbSNP: rs1555321237; hg19: chr14-29236699;