NM_021267.5:c.437G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_021267.5(CERS1):c.437G>A(p.Arg146Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00012 in 1,613,148 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 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. R146W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00013 ( 2 hom. )

Consequence

CERS1
NM_021267.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.01

Publications

0 publications found

Variant links:

Genes affected

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:

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 Gene-Disease associations (from GenCC):

right atrial isomerism
Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
congenital heart defects, multiple types, 6
Inheritance: AD Classification: LIMITED, NO_KNOWN Submitted by: Illumina, Ambry Genetics
conotruncal heart malformations
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

GDF1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.02847308).

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021267.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CERS1	NM_021267.5	MANE Select	c.437G>A	p.Arg146Gln	missense	Exon 3 of 8	NP_067090.1	P27544-1
GDF1	NM_001492.6	MANE Select	c.-886G>A		5_prime_UTR	Exon 3 of 8	NP_001483.3
CERS1	NM_001387439.1		c.437G>A	p.Arg146Gln	missense	Exon 3 of 7	NP_001374368.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CERS1	ENST00000623882.4	TSL:1 MANE Select	c.437G>A	p.Arg146Gln	missense	Exon 3 of 8	ENSP00000485308.1	P27544-1
CERS1	ENST00000429504.6	TSL:1	c.437G>A	p.Arg146Gln	missense	Exon 3 of 6	ENSP00000389044.1	P27544-2
CERS1	ENST00000542296.6	TSL:1	c.143G>A	p.Arg48Gln	missense	Exon 3 of 6	ENSP00000437648.1	Q5XG75

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152034

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.000961

GnomAD2 exomes

AF:

0.000254

AC:

AN:

244546

AF XY:

0.000330

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000557

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000913

Gnomad OTH exome

AF:

0.000669

GnomAD4 exome

AF:

0.000127

AC:

186

AN:

1460996

Hom.:

Cov.:

AF XY:

0.000176

AC XY:

128

AN XY:

726756

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.0000448

AC:

AN:

44684

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39688

South Asian (SAS)

AF:

0.00146

AC:

126

AN:

86176

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53032

Middle Eastern (MID)

AF:

0.00225

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000189

AC:

AN:

1111702

Other (OTH)

AF:

0.000365

AC:

AN:

60348

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152152

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74386

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41522

American (AMR)

AF:

0.0000655

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.000208

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68008

Other (OTH)

AF:

0.000951

AC:

AN:

2104

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.544

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:

0.000132

Hom.:

Bravo

AF:

0.0000718

ExAC

AF:

0.000273

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Progressive myoclonic epilepsy type 8 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.088

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.34

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.54

Eigen

Benign

-0.68

Eigen_PC

Benign

-0.64

FATHMM_MKL

Benign

0.39

LIST_S2

Benign

0.78

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.028

MetaSVM

Benign

-0.63

MutationAssessor

Benign

0.54

PhyloP100

1.0

PrimateAI

Benign

0.28

PROVEAN

Benign

-0.64

REVEL

Benign

0.19

Sift

Benign

0.34

Sift4G

Benign

0.63

Polyphen

0.013

Vest4

0.24

MVP

0.44

ClinPred

0.027

GERP RS

3.1

PromoterAI

0.034

Neutral

(source)

Varity_R

0.036

Mutation Taster

=94/6

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over