rs61735982

Positions:

chr9-34649450-T-C

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_000155.4(GALT):c.945T>C(p.His315=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00637 in 1,614,102 control chromosomes in the GnomAD database, including 467 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.031 ( 208 hom., cov: 31)

Exomes 𝑓: 0.0038 ( 259 hom. )

Consequence

GALT
NM_000155.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts U:1B:9

Conservation

PhyloP100: 1.24

Variant links:

Genes affected

GALT (HGNC:4135): (galactose-1-phosphate uridylyltransferase) Galactose-1-phosphate uridyl transferase (GALT) catalyzes the second step of the Leloir pathway of galactose metabolism, namely the conversion of UDP-glucose + galactose-1-phosphate to glucose-1-phosphate + UDP-galactose. The absence of this enzyme results in classic galactosemia in humans and can be fatal in the newborn period if lactose is not removed from the diet. The pathophysiology of galactosemia has not been clearly defined. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

GALT links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.56).

BP6

Variant 9-34649450-T-C is Benign according to our data. Variant chr9-34649450-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 36160.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.24 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.101 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GALT	NM_000155.4 linkuse as main transcript	c.945T>C	p.His315=	synonymous_variant	10/11	ENST00000378842.8
GALT	NM_001258332.2 linkuse as main transcript	c.618T>C	p.His206=	synonymous_variant	8/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GALT	ENST00000378842.8 linkuse as main transcript	c.945T>C	p.His315=	synonymous_variant	10/11	1	NM_000155.4	P1	P07902-1

Frequencies

GnomAD3 genomes

AF:

0.0308

AC:

4679

AN:

152106

Hom.:

208

Cov.:

show subpopulations

Gnomad AFR

AF:

0.104

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0154

Gnomad ASJ

AF:

0.00979

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00145

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000662

Gnomad OTH

AF:

0.0230

GnomAD3 exomes

AF:

0.00877

AC:

2204

AN:

251450

Hom.:

AF XY:

0.00671

AC XY:

912

AN XY:

135896

show subpopulations

Gnomad AFR exome

AF:

0.110

Gnomad AMR exome

AF:

0.00561

Gnomad ASJ exome

AF:

0.00943

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000621

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000686

Gnomad OTH exome

AF:

0.00554

GnomAD4 exome

AF:

0.00382

AC:

5588

AN:

1461878

Hom.:

259

Cov.:

AF XY:

0.00335

AC XY:

2433

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.112

Gnomad4 AMR exome

AF:

0.00613

Gnomad4 ASJ exome

AF:

0.0104

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000742

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000537

Gnomad4 OTH exome

AF:

0.00931

GnomAD4 genome

AF:

0.0308

AC:

4690

AN:

152224

Hom.:

208

Cov.:

AF XY:

0.0299

AC XY:

2227

AN XY:

74440

show subpopulations

Gnomad4 AFR

AF:

0.104

Gnomad4 AMR

AF:

0.0154

Gnomad4 ASJ

AF:

0.00979

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00104

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000662

Gnomad4 OTH

AF:

0.0227

Alfa

AF:

0.0190

Hom.:

Bravo

AF:

0.0354

Asia WGS

AF:

0.00751

AC:

AN:

3478

EpiCase

AF:

0.00109

EpiControl

AF:

0.000948

ClinVar

Significance: Benign/Likely benign

Submissions summary: Uncertain:1Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Deficiency of UDPglucose-hexose-1-phosphate uridylyltransferase

Benign:5

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Apr 14, 2022	- -
Likely benign, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Jul 30, 2021	- -
Benign, no assertion criteria provided	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Aug 16, 2010	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 31, 2024	- -

not specified

Benign:3

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jul 20, 2018	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jul 06, 2016	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

not provided

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Department of Pathology and Laboratory Medicine, Sinai Health System

- -

Galactosemia

Benign:1

Benign, no assertion criteria provided

clinical testing

Natera, Inc.

Mar 29, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.56

CADD

Benign

9.0

DANN

Benign

0.76

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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