2-38666258-A-G

Position:

chr2-38666258-A-G

Variant summary

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

The NM_138801.3(GALM):c.97A>G(p.Ile33Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,613,914 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

GALM
NM_138801.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.497

Variant links:

Genes affected

GALM (HGNC:24063): (galactose mutarotase) This gene encodes an enzyme that catalyzes the epimerization of hexose sugars such as glucose and galactose. The encoded protein is expressed in the cytoplasm and has a preference for galactose. The encoded protein may be required for normal galactose metabolism by maintaining the equilibrium of alpha and beta anomers of galactose.[provided by RefSeq, Mar 2009]

GALM links:

GALM (HGNC:):

GALM links:

Genome browser will be placed here

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=0.065137506).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GALM	NM_138801.3 linkuse as main transcript	c.97A>G	p.Ile33Val	missense_variant	1/7	ENST00000272252.10	NP_620156.1	Q96C23A0A384MDW6
GALM	XM_011532540.3 linkuse as main transcript	c.97A>G	p.Ile33Val	missense_variant	1/6		XP_011530842.1	Q96C23
GALM	XM_047443419.1 linkuse as main transcript	c.97A>G	p.Ile33Val	missense_variant	1/6		XP_047299375.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
GALM	ENST00000272252.10 linkuse as main transcript	c.97A>G	p.Ile33Val	missense_variant	1/7	1	NM_138801.3	ENSP00000272252.5	Q96C23
GALM	ENST00000410063.5 linkuse as main transcript	c.97A>G	p.Ile33Val	missense_variant	1/4	3		ENSP00000386233.1	B8ZZ75
GALM	ENST00000427858.4 linkuse as main transcript	n.178A>G		non_coding_transcript_exon_variant	1/4	4
GALM	ENST00000444351.5 linkuse as main transcript	n.16A>G		non_coding_transcript_exon_variant	1/7	5		ENSP00000409083.1	H7C320

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152232

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251198

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135790

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461682

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727158

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000720

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152232

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000227

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 03, 2024

The c.97A>G (p.I33V) alteration is located in exon 1 (coding exon 1) of the GALM gene. This alteration results from a A to G substitution at nucleotide position 97, causing the isoleucine (I) at amino acid position 33 to be replaced by a valine (V). 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

0.093

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.58

CADD

Benign

DANN

Benign

0.74

DEOGEN2

Benign

0.16

T;.

Eigen

Benign

-0.85

Eigen_PC

Benign

-0.69

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.63

T;T

M_CAP

Benign

0.0025

MetaRNN

Benign

0.065

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.035

N;.

PrimateAI

Benign

0.43

PROVEAN

Benign

-0.46

N;N

REVEL

Benign

0.032

Sift

Benign

0.71

T;D

Sift4G

Benign

0.53

T;T

Polyphen

0.0020

B;.

Vest4

0.15

MutPred

0.58

Loss of catalytic residue at S35 (P = 0.1412);Loss of catalytic residue at S35 (P = 0.1412);

MVP

0.11

MPC

0.046

ClinPred

0.026

GERP RS

-0.020

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.034

gMVP

0.47

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