Variant 12-22046381-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 0P and 15B. BP4_ModerateBP6_Very_StrongBP7BS2

The NM_018686.6(CMAS):c.78G>A(p.Lys26=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000682 in 1,572,908 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0037 ( 4 hom., cov: 33)

Exomes 𝑓: 0.00036 ( 0 hom. )

Consequence

CMAS
NM_018686.6 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 1.54

Variant links:

Genes affected

CMAS (HGNC:18290): (cytidine monophosphate N-acetylneuraminic acid synthetase) This gene encodes an enzyme that converts N-acetylneuraminic acid (NeuNAc) to cytidine 5'-monophosphate N-acetylneuraminic acid (CMP-NeuNAc). This process is important in the formation of sialylated glycoprotein and glycolipids. This modification plays a role in cell-cell communications and immune responses. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2016]

CMAS links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.36).

BP6

Variant 12-22046381-G-A is Benign according to our data. Variant chr12-22046381-G-A is described in ClinVar as [Benign]. Clinvar id is 778585.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.54 with no splicing effect.

BS2

High Homozygotes in GnomAd4 at 4 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CMAS	NM_018686.6 linkuse as main transcript	c.78G>A	p.Lys26=	synonymous_variant	1/8	ENST00000229329.7
CMAS	NR_135117.2 linkuse as main transcript	n.164G>A		non_coding_transcript_exon_variant	1/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CMAS	ENST00000229329.7 linkuse as main transcript	c.78G>A	p.Lys26=	synonymous_variant	1/8	1	NM_018686.6	P1	Q8NFW8-1
CMAS	ENST00000534981.5 linkuse as main transcript	c.78G>A	p.Lys26=	synonymous_variant, NMD_transcript_variant	1/7	1			Q8NFW8-2
CMAS	ENST00000535610.5 linkuse as main transcript	c.78G>A	p.Lys26=	synonymous_variant, NMD_transcript_variant	1/5	5

Frequencies

GnomAD3 genomes

AF:

0.00365

AC:

556

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0125

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00222

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:

0.00239

GnomAD3 exomes

AF:

0.000677

AC:

123

AN:

181602

Hom.:

AF XY:

0.000527

AC XY:

AN XY:

98680

show subpopulations

Gnomad AFR exome

AF:

0.0111

Gnomad AMR exome

AF:

0.000526

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:

0.0000385

Gnomad OTH exome

AF:

0.000430

GnomAD4 exome

AF:

0.000363

AC:

515

AN:

1420584

Hom.:

Cov.:

AF XY:

0.000319

AC XY:

224

AN XY:

702890

show subpopulations

Gnomad4 AFR exome

AF:

0.0131

Gnomad4 AMR exome

AF:

0.000758

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000124

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000458

Gnomad4 OTH exome

AF:

0.000970

GnomAD4 genome

AF:

0.00366

AC:

557

AN:

152324

Hom.:

Cov.:

AF XY:

0.00336

AC XY:

250

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.0125

Gnomad4 AMR

AF:

0.00222

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:

0.00237

Alfa

AF:

0.00118

Hom.:

Bravo

AF:

0.00437

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 30, 2018	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.36

CADD

Benign

DANN

Benign

0.95

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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