Genetic Variant CALHM3:p.Pro271Ala (chr10-103473437-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001129742.2(CALHM3):c.811C>G(p.Pro271Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000412 in 1,530,708 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

CALHM3
NM_001129742.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.569

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 made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.039286643).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CALHM3	NM_001129742.2 link	c.811C>G	p.Pro271Ala	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.811C>G	p.Pro271Ala	missense_variant	Exon 3 of 3	1	NM_001129742.2	ENSP00000358798.4		Q86XJ0

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00131

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000727

AC:

AN:

137642

Hom.:

AF XY:

0.0000691

AC XY:

AN XY:

72344

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000433

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000297

AC:

AN:

1378474

Hom.:

Cov.:

AF XY:

0.0000295

AC XY:

AN XY:

677114

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000262

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000417

Gnomad4 NFE exome

AF:

0.0000272

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000145

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74368

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000390

Hom.:

Bravo

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 09, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.811C>G (p.P271A) alteration is located in exon 3 (coding exon 3) of the CALHM3 gene. This alteration results from a C to G substitution at nucleotide position 811, causing the proline (P) at amino acid position 271 to be replaced by an alanine (A). 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

0.059

BayesDel_addAF

Benign

-0.61

BayesDel_noAF

Benign

-0.78

CADD

Benign

0.95

DANN

Benign

0.45

DEOGEN2

Benign

0.0042

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.19

LIST_S2

Benign

0.30

M_CAP

Benign

0.0034

MetaRNN

Benign

0.039

MetaSVM

Benign

-1.0

PrimateAI

Benign

0.42

PROVEAN

Benign

-0.58

REVEL

Benign

0.028

Sift

Benign

0.28

Sift4G

Benign

0.29

Vest4

0.062

MutPred

0.28

Loss of relative solvent accessibility (P = 0.0071);

MVP

0.076

ClinPred

0.060

GERP RS

2.7

Varity_R

0.018

gMVP

0.18

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