rs778913690

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate

The NM_017649.5(CNNM2):​c.97C>G​(p.Leu33Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Consequence

CNNM2
NM_017649.5 missense

Scores

2
17

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.101
Variant links:
Genes affected
CNNM2 (HGNC:103): (cyclin and CBS domain divalent metal cation transport mediator 2) This gene encodes a member of the ancient conserved domain containing protein family. Members of this protein family contain a cyclin box motif and have structural similarity to the cyclins. The encoded protein may play an important role in magnesium homeostasis by mediating the epithelial transport and renal reabsorption of Mg2+. Mutations in this gene are associated with renal hypomagnesemia. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in the CNNM2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 16 curated pathogenic missense variants (we use a threshold of 10). The gene has 10 curated benign missense variants. Gene score misZ: 4.4105 (above the threshold of 3.09). Trascript score misZ: 5.0056 (above the threshold of 3.09). GenCC associations: The gene is linked to hypomagnesemia, seizures, and intellectual disability 1, familial primary hypomagnesemia with normocalciuria and normocalcemia, renal hypomagnesemia 6.
BP4
Computational evidence support a benign effect (MetaRNN=0.1258704).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CNNM2NM_017649.5 linkc.97C>G p.Leu33Val missense_variant Exon 1 of 8 ENST00000369878.9 NP_060119.3 Q9H8M5-1
CNNM2NM_199076.3 linkc.97C>G p.Leu33Val missense_variant Exon 1 of 7 NP_951058.1 Q9H8M5-2
CNNM2NM_199077.3 linkc.97C>G p.Leu33Val missense_variant Exon 1 of 2 NP_951059.1 Q9H8M5-3
LOC107984265NR_160733.1 linkn.-242G>C upstream_gene_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CNNM2ENST00000369878.9 linkc.97C>G p.Leu33Val missense_variant Exon 1 of 8 1 NM_017649.5 ENSP00000358894.3 Q9H8M5-1
CNNM2ENST00000369875.3 linkc.97C>G p.Leu33Val missense_variant Exon 1 of 2 1 ENSP00000358891.3 Q9H8M5-3
CNNM2ENST00000433628.2 linkc.97C>G p.Leu33Val missense_variant Exon 1 of 7 2 ENSP00000392875.2 Q9H8M5-2
ENSG00000286575ENST00000652934.1 linkn.-242G>C upstream_gene_variant

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
32
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.065
BayesDel_addAF
Benign
-0.073
T
BayesDel_noAF
Benign
-0.34
CADD
Benign
15
DANN
Benign
0.92
DEOGEN2
Benign
0.016
T;.;.
Eigen
Benign
-0.52
Eigen_PC
Benign
-0.35
FATHMM_MKL
Benign
0.033
N
LIST_S2
Benign
0.73
T;T;T
M_CAP
Pathogenic
0.92
D
MetaRNN
Benign
0.13
T;T;T
MetaSVM
Benign
-0.91
T
MutationAssessor
Benign
0.0
N;N;N
PrimateAI
Pathogenic
0.87
D
PROVEAN
Benign
0.12
N;N;N
REVEL
Benign
0.099
Sift
Benign
0.076
T;T;T
Sift4G
Benign
0.43
T;T;T
Polyphen
0.0040
B;.;B
Vest4
0.079
MutPred
0.17
Loss of helix (P = 0.0626);Loss of helix (P = 0.0626);Loss of helix (P = 0.0626);
MVP
0.043
ClinPred
0.12
T
GERP RS
3.2
Varity_R
0.12
gMVP
0.39

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.

Other links and lift over

dbSNP: rs778913690; hg19: chr10-104678334; API