chr10-102963863-T-C

Variant names:

• chr10-102963863-T-C
• rs11191479
• NM_017649.5:c.1621+43762T>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_017649.5(CNNM2):​c.1621+43762T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0947 in 152,206 control chromosomes in the GnomAD database, including 880 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.095 (880 hom., cov: 32)
• Consequence: CNNM2 NM_017649.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.249
• Publications: 22 publications found

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]

CNNM2 Gene-Disease associations (from GenCC):

• hypomagnesemia, seizures, and intellectual disability 1

  Inheritance: AR, SD, AD Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Illumina, Labcorp Genetics (formerly Invitae)
• renal hypomagnesemia 6

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• familial primary hypomagnesemia with normocalciuria and normocalcemia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.265 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017649.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CNNM2	NM_017649.5	MANE Select	c.1621+43762T>C		intron	N/A	NP_060119.3
	CNNM2	NM_199076.3		c.1621+43762T>C		intron	N/A	NP_951058.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CNNM2	ENST00000369878.9	TSL:1 MANE Select	c.1621+43762T>C		intron	N/A	ENSP00000358894.3
	CNNM2	ENST00000433628.2	TSL:2	c.1621+43762T>C		intron	N/A	ENSP00000392875.2

Frequencies

GnomAD3 genomes AF: 0.0947 AC: 14397 AN: 152088 Hom.: 875 Cov.: 32

Gnomad AFR AF: 0.0603

Gnomad AMI AF: 0.0175

Gnomad AMR AF: 0.138

Gnomad ASJ AF: 0.0709

Gnomad EAS AF: 0.277

Gnomad SAS AF: 0.184

Gnomad FIN AF: 0.0753

Gnomad MID AF: 0.0696

Gnomad NFE AF: 0.0908

Gnomad OTH AF: 0.101

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0947 AC: 14417 AN: 152206 Hom.: 880 Cov.: 32 AF XY: 0.0966 AC XY: 7191 AN XY: 74404

African (AFR) AF: 0.0604 AC: 2511 AN: 41550

American (AMR) AF: 0.139 AC: 2118 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.0709 AC: 246 AN: 3470

East Asian (EAS) AF: 0.277 AC: 1432 AN: 5170

South Asian (SAS) AF: 0.183 AC: 882 AN: 4824

European-Finnish (FIN) AF: 0.0753 AC: 797 AN: 10586

Middle Eastern (MID) AF: 0.0714 AC: 21 AN: 294

European-Non Finnish (NFE) AF: 0.0908 AC: 6174 AN: 68004

Other (OTH) AF: 0.104 AC: 220 AN: 2110

Alfa AF: 0.0909 Hom.: 88

Bravo AF: 0.0983

Asia WGS AF: 0.199 AC: 690 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	3.2
DANN	Benign	0.49
PhyloP100		-0.25
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs11191479; hg19: chr10-104723620;