Genetic Variant CALHM3:p.Leu302Gln (chr10-103473343-A-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001129742.2(CALHM3):c.905T>A(p.Leu302Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000804 in 1,505,340 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000083 ( 0 hom. )

Consequence

CALHM3
NM_001129742.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.65

Publications

1 publications found

Variant links:

Genes affected

CALHM3 (HGNC:23458): (calcium homeostasis modulator 3) Predicted to enable cation channel activity. Predicted to be involved in ATP transport. Predicted to be located in basolateral plasma membrane. Predicted to be integral component of plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

CALHM3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.863

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CALHM3	NM_001129742.2 link	c.905T>A	p.Leu302Gln	missense_variant	Exon 3 of 3	ENST00000369783.4	NP_001123214.1	Q86XJ0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CALHM3	ENST00000369783.4 link	c.905T>A	p.Leu302Gln	missense_variant	Exon 3 of 3	1	NM_001129742.2	ENSP00000358798.4		Q86XJ0

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152128

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.000132

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000100

AC:

AN:

119640

AF XY:

0.0000647

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000226

Gnomad NFE exome

AF:

0.000199

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000828

AC:

112

AN:

1353212

Hom.:

Cov.:

AF XY:

0.0000710

AC XY:

AN XY:

661628

show subpopulations

African (AFR)

AF:

0.0000331

AC:

AN:

30212

American (AMR)

AF:

0.00

AC:

AN:

30734

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

22410

East Asian (EAS)

AF:

0.00

AC:

AN:

35180

South Asian (SAS)

AF:

0.00

AC:

AN:

72242

European-Finnish (FIN)

AF:

0.000168

AC:

AN:

47512

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5496

European-Non Finnish (NFE)

AF:

0.0000949

AC:

100

AN:

1053524

Other (OTH)

AF:

0.0000537

AC:

AN:

55902

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000592

AC:

AN:

152128

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74336

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41420

American (AMR)

AF:

0.00

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

67994

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.531

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000476

Hom.:

Bravo

AF:

0.0000567

ExAC

AF:

0.0000423

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 28, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.905T>A (p.L302Q) alteration is located in exon 3 (coding exon 3) of the CALHM3 gene. This alteration results from a T to A substitution at nucleotide position 905, causing the leucine (L) at amino acid position 302 to be replaced by a glutamine (Q). 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

0.83

BayesDel_addAF

Uncertain

0.061

BayesDel_noAF

Uncertain

0.12

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Pathogenic

0.77

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Benign

0.80

M_CAP

Uncertain

0.11

MetaRNN

Pathogenic

0.86

MetaSVM

Benign

-0.61

PhyloP100

8.7

PrimateAI

Uncertain

0.58

PROVEAN

Uncertain

-3.0

REVEL

Uncertain

0.59

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Vest4

0.95

MVP

0.38

ClinPred

0.74

GERP RS

5.7

Varity_R

0.80

gMVP

0.78

Mutation Taster

=41/59

disease causing

(source)

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

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10-103473343-A-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over