Genetic Variant CSAD:p.Pro418Ser (chr12-53159679-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001244705.2(CSAD):c.1252C>T(p.Pro418Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000509 in 1,611,346 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00029 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000026 ( 0 hom. )

Consequence

CSAD
NM_001244705.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.60

Variant links:

Genes affected

CSAD (HGNC:18966): (cysteine sulfinic acid decarboxylase) This gene encodes a member of the group 2 decarboxylase family. A similar protein in rodents plays a role in multiple biological processes as the rate-limiting enzyme in taurine biosynthesis, catalyzing the decarboxylation of cysteinesulfinate to hypotaurine. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Sep 2011]

CSAD links:

ENSG00000257808 (HGNC:):

ENSG00000257808 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CSAD	NM_001244705.2 link	c.1252C>T	p.Pro418Ser	missense_variant	Exon 16 of 17	ENST00000444623.6	NP_001231634.1	Q9Y600-1A0A024RAX7Q86V02

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CSAD	ENST00000444623.6 link	c.1252C>T	p.Pro418Ser	missense_variant	Exon 16 of 17	1	NM_001244705.2	ENSP00000415485.1		Q9Y600-1

Frequencies

GnomAD3 genomes

AF:

0.000283

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000773

AC:

AN:

245870

Hom.:

AF XY:

0.0000301

AC XY:

AN XY:

132688

show subpopulations

Gnomad AFR exome

AF:

0.000898

Gnomad AMR exome

AF:

0.0000589

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000469

Gnomad NFE exome

AF:

0.00000899

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.0000260

AC:

AN:

1459020

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

725412

show subpopulations

Gnomad4 AFR exome

AF:

0.000777

Gnomad4 AMR exome

AF:

0.0000452

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000188

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.000289

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.000986

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000104

Hom.:

Bravo

AF:

0.000344

ESP6500AA

AF:

0.00182

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000124

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 14, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1333C>T (p.P445S) alteration is located in exon 16 (coding exon 15) of the CSAD gene. This alteration results from a C to T substitution at nucleotide position 1333, causing the proline (P) at amino acid position 445 to be replaced by a serine (S). 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

Pathogenic

0.66

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Uncertain

0.0

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.77

.;.;D;D

Eigen

Uncertain

0.64

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Uncertain

0.78

LIST_S2

Pathogenic

1.0

D;D;.;D

M_CAP

Uncertain

0.097

MetaRNN

Uncertain

0.66

D;D;D;D

MetaSVM

Uncertain

0.41

MutationAssessor

Pathogenic

3.4

.;.;M;M

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-7.9

D;D;D;D

REVEL

Pathogenic

0.65

Sift

Pathogenic

0.0

D;D;D;D

Sift4G

Pathogenic

0.0

D;D;D;D

Polyphen

1.0

D;D;D;D

Vest4

0.77

MVP

0.70

MPC

0.62

ClinPred

0.98

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.94

gMVP

0.77

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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