Variant chr10-50245386-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_019893.4(ASAH2):c.196C>T(p.Arg66Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000223 in 1,613,640 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

ASAH2
NM_019893.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.01

Variant links:

Genes affected

ASAH2 (HGNC:18860): (N-acylsphingosine amidohydrolase 2) Ceramidases (EC 3.5.1.23), such as ASAH2, catalyze hydrolysis of the N-acyl linkage of ceramide, a second messenger in a variety of cellular events, to produce sphingosine. Sphingosine exerts both mitogenic and apoptosis-inducing activities, and its phosphorylated form functions as an intra- and intercellular second messenger (see MIM 603730) (Mitsutake et al., 2001 [PubMed 11328816]).[supplied by OMIM, Mar 2008]

ASAH2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.060489923).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ASAH2	NM_019893.4 linkuse as main transcript	c.196C>T	p.Arg66Cys	missense_variant	3/21	ENST00000682911.1
ASAH2	NM_001143974.3 linkuse as main transcript	c.196C>T	p.Arg66Cys	missense_variant	3/20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ASAH2	ENST00000682911.1 linkuse as main transcript	c.196C>T	p.Arg66Cys	missense_variant	3/21		NM_019893.4	P1	Q9NR71-1
ASAH2	ENST00000395526.9 linkuse as main transcript	c.196C>T	p.Arg66Cys	missense_variant	4/22	1		P1	Q9NR71-1
ASAH2	ENST00000329428.10 linkuse as main transcript	c.139C>T	p.Arg47Cys	missense_variant	2/19	1

Frequencies

GnomAD3 genomes

AF:

0.0000658

AC:

AN:

151884

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251230

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135774

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000178

AC:

AN:

1461756

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

727178

show subpopulations

Gnomad4 AFR exome

AF:

0.000209

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000108

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000658

AC:

AN:

151884

Hom.:

Cov.:

AF XY:

0.0000809

AC XY:

AN XY:

74182

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000907

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 27, 2022

The c.196C>T (p.R66C) alteration is located in exon 2 (coding exon 2) of the ASAH2 gene. This alteration results from a C to T substitution at nucleotide position 196, causing the arginine (R) at amino acid position 66 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.75

CADD

Benign

0.20

DANN

Benign

0.83

DEOGEN2

Benign

0.26

T;.;.

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.017

LIST_S2

Benign

0.61

T;T;T

M_CAP

Benign

0.0044

MetaRNN

Benign

0.060

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

N;N;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.19

PROVEAN

Benign

-0.45

N;N;N

REVEL

Benign

0.096

Sift

Benign

0.060

T;T;D

Sift4G

Uncertain

0.048

D;D;D

Polyphen

0.032

B;P;.

Vest4

0.21

MVP

0.076

MPC

0.024

ClinPred

0.082

GERP RS

0.29

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.089

gMVP

0.51

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

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