Genetic Variant CNNM3:p.Ala72Ser (chr2-96816491-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_017623.5(CNNM3):c.214G>T(p.Ala72Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000755 in 1,457,316 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 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. A72V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000046 ( 0 hom. )

Consequence

CNNM3
NM_017623.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.430

Variant links:

Genes affected

CNNM3 (HGNC:104): (cyclin and CBS domain divalent metal cation transport mediator 3) Predicted to enable transmembrane transporter activity. Predicted to be involved in ion transport; magnesium ion homeostasis; and transmembrane transport. Located in membrane. [provided by Alliance of Genome Resources, Apr 2022]

CNNM3 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.098882884).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CNNM3	NM_017623.5 link	c.214G>T	p.Ala72Ser	missense_variant	Exon 1 of 8	ENST00000305510.4	NP_060093.3	Q8NE01-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CNNM3	ENST00000305510.4 link	c.214G>T	p.Ala72Ser	missense_variant	Exon 1 of 8	1	NM_017623.5	ENSP00000305449.3		Q8NE01-1
CNNM3	ENST00000377060.7 link	c.214G>T	p.Ala72Ser	missense_variant	Exon 1 of 7	2		ENSP00000366260.3		Q8NE01-2

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

151840

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000460

AC:

AN:

1305476

Hom.:

Cov.:

AF XY:

0.00000311

AC XY:

AN XY:

643748

show subpopulations

Gnomad4 AFR exome

AF:

0.000229

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:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000329

AC:

AN:

151840

Hom.:

Cov.:

AF XY:

0.0000270

AC XY:

AN XY:

74174

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.00

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:

0.00

Alfa

AF:

0.000125

Hom.:

Bravo

AF:

0.000117

ExAC

AF:

0.0000109

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 28, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.214G>T (p.A72S) alteration is located in exon 1 (coding exon 1) of the CNNM3 gene. This alteration results from a G to T substitution at nucleotide position 214, causing the alanine (A) at amino acid position 72 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

Benign

0.095

BayesDel_addAF

Benign

-0.029

BayesDel_noAF

Benign

-0.28

CADD

Benign

9.6

DANN

Benign

0.81

DEOGEN2

Benign

0.0036

.;T

Eigen

Benign

-0.91

Eigen_PC

Benign

-0.86

FATHMM_MKL

Benign

0.15

LIST_S2

Benign

0.43

T;T

M_CAP

Pathogenic

0.98

MetaRNN

Benign

0.099

T;T

MetaSVM

Benign

-0.73

MutationAssessor

Benign

0.34

N;N

PrimateAI

Pathogenic

0.88

PROVEAN

Benign

0.37

N;N

REVEL

Benign

0.19

Sift

Benign

1.0

T;T

Sift4G

Benign

0.79

T;T

Polyphen

0.0070

B;B

Vest4

0.096

MutPred

0.25

Gain of relative solvent accessibility (P = 0.0479);Gain of relative solvent accessibility (P = 0.0479);

MVP

0.099

ClinPred

0.047

GERP RS

2.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.9

Varity_R

0.064

gMVP

0.19

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