NM_001492.6:c.909dupC

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1_StrongPP5_Very_Strong

The NM_001492.6(GDF1):c.909dupC(p.Val304ArgfsTer48) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000105 in 1,454,670 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.00021 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000093 ( 0 hom. )

Consequence

GDF1
NM_001492.6 frameshift

Scores

Not classified

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:5

Conservation

PhyloP100: -0.683

Variant links:

Genes affected

GDF1 (HGNC:4214): (growth differentiation factor 1) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate each subunit of the disulfide-linked homodimer. Studies in rodents suggest that this protein is involved in the establishment of left-right asymmetry in early embryogenesis and in neural development in later embryogenesis. The encoded protein is translated from a bicistronic mRNA that also encodes ceramide synthase 1. Mutations in this gene are associated with several congenital cardiovascular malformations. [provided by RefSeq, Jul 2016]

GDF1 links:

CERS1 (HGNC:14253): (ceramide synthase 1) This gene encodes a ceramide synthase enzyme, which catalyzes the synthesis of ceramide, the hydrophobic moiety of sphingolipids. The encoded enzyme synthesizes 18-carbon (C18) ceramide in brain neurons. Elevated expression of this gene may be associated with increased longevity, while decreased expression of this gene may be associated with myoclonus epilepsy with dementia in human patients. This protein is transcribed from a monocistronic mRNA as well as a bicistronic mRNA, which also encodes growth differentiation factor 1. [provided by RefSeq, Jul 2016]

CERS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 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. Fraction of 0.188 CDS is truncated, and there are 3 pathogenic variants in the truncated region.

PP5

Variant 19-18868806-C-CG is Pathogenic according to our data. Variant chr19-18868806-C-CG is described in ClinVar as [Likely_pathogenic]. Clinvar id is 65389.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GDF1	NM_001492.6 link	c.909dupC	p.Val304ArgfsTer48	frameshift_variant	Exon 8 of 8	ENST00000247005.8	NP_001483.3	P27539A0A024R7N8
CERS1	NM_021267.5 link	c.*1178dupC		3_prime_UTR_variant	Exon 8 of 8	ENST00000623882.4	NP_067090.1	P27544-1
GDF1	NM_001387438.1 link	c.909dupC	p.Val304ArgfsTer48	frameshift_variant	Exon 5 of 5		NP_001374367.1
CERS1	NM_001387440.1 link	c.*1770dupC		3_prime_UTR_variant	Exon 7 of 7		NP_001374369.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GDF1	ENST00000247005.8 link	c.909dupC	p.Val304ArgfsTer48	frameshift_variant	Exon 8 of 8	1	NM_001492.6	ENSP00000247005.5		P27539
CERS1	ENST00000623882 link	c.*1178dupC		3_prime_UTR_variant	Exon 8 of 8	1	NM_021267.5	ENSP00000485308.1		P27544-1

Frequencies

GnomAD3 genomes

AF:

0.000215

AC:

AN:

148968

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:

0.00160

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000255

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000213

AC:

AN:

112872

Hom.:

AF XY:

0.000242

AC XY:

AN XY:

61992

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00159

Gnomad NFE exome

AF:

0.000102

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000927

AC:

121

AN:

1305702

Hom.:

Cov.:

AF XY:

0.000101

AC XY:

AN XY:

644450

show subpopulations

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:

0.00103

Gnomad4 NFE exome

AF:

0.0000701

Gnomad4 OTH exome

AF:

0.0000964

GnomAD4 genome

AF:

0.000215

AC:

AN:

148968

Hom.:

Cov.:

AF XY:

0.000275

AC XY:

AN XY:

72610

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00160

Gnomad4 NFE

AF:

0.000255

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00124

Hom.:

Bravo

AF:

0.0000227

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Right atrial isomerism

Pathogenic:2

Institute of Human Genetics, Medical University Innsbruck

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 15, 2010

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

not provided

Pathogenic:2

Jun 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

GDF1: PVS1:Strong, PM2 -

Sep 28, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Val304Argfs*48) in the GDF1 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 69 amino acid(s) of the GDF1 protein. This variant is present in population databases (rs606231383, gnomAD 0.1%). This premature translational stop signal has been observed in individual(s) with clinical features of GDF1-related conditions and/or right atrial isomerism (PMID: 20413652, 34486251). It has also been observed to segregate with disease in related individuals. This variant is also known as c.909insC. ClinVar contains an entry for this variant (Variation ID: 65389). For these reasons, this variant has been classified as Pathogenic. -

Congenital heart defects, multiple types, 6;C3178806:Right atrial isomerism

Pathogenic:1

May 01, 2023

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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