dbSNP rs1377406977: CALHM3:p.Ala256Thr (chr10-103473482-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001129742.2(CALHM3):c.766G>A(p.Ala256Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000387 in 1,549,508 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000036 ( 0 hom. )

Consequence

CALHM3
NM_001129742.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.49

Publications

0 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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.093914896).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CALHM3	NM_001129742.2 link	c.766G>A	p.Ala256Thr	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.766G>A	p.Ala256Thr	missense_variant	Exon 3 of 3	1	NM_001129742.2	ENSP00000358798.4		Q86XJ0

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152264

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00000358

AC:

AN:

1397244

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

689036

show subpopulations

African (AFR)

AF:

0.0000634

AC:

AN:

31570

American (AMR)

AF:

0.0000843

AC:

AN:

35604

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25076

East Asian (EAS)

AF:

0.00

AC:

AN:

35710

South Asian (SAS)

AF:

0.00

AC:

AN:

79070

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1077952

Other (OTH)

AF:

0.00

AC:

AN:

57940

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152264

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74388

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41472

American (AMR)

AF:

0.0000654

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68044

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000264

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 20, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.766G>A (p.A256T) alteration is located in exon 3 (coding exon 3) of the CALHM3 gene. This alteration results from a G to A substitution at nucleotide position 766, causing the alanine (A) at amino acid position 256 to be replaced by a threonine (T). 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

0.096

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.63

CADD

Benign

(source)

DANN

Benign

0.77

DEOGEN2

Benign

0.0047

Eigen

Benign

-0.20

Eigen_PC

Benign

-0.15

FATHMM_MKL

Benign

0.25

LIST_S2

Benign

0.57

M_CAP

Benign

0.015

MetaRNN

Benign

0.094

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.81

PhyloP100

2.5

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-0.55

REVEL

Benign

0.10

Sift

Benign

0.56

Sift4G

Benign

0.12

Vest4

0.068

MutPred

0.20

Gain of phosphorylation at A256 (P = 0.0359);

MVP

0.092

ClinPred

0.28

GERP RS

5.5

Varity_R

0.059

gMVP

0.23

Mutation Taster

=97/3

polymorphism

(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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rs1377406977

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over