17-75758572-C-A

Position:

• chr17-75758572-C-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000154.2(GALK1):​c.821G>T​(p.Gly274Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,258 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 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: GALK1 NM_000154.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.12

Genes affected

GALK1 (HGNC:4118): (galactokinase 1) Galactokinase is a major enzyme for the metabolism of galactose and its deficiency causes congenital cataracts during infancy and presenile cataracts in the adult population. [provided by RefSeq, Jul 2008]

ACMG classification

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=0.06727132).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GALK1	NM_000154.2	c.821G>T	p.Gly274Val	missense_variant	6/8	ENST00000588479.6	NP_000145.1
GALK1	NM_001381985.1	c.821G>T	p.Gly274Val	missense_variant	6/9		NP_001368914.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GALK1	ENST00000588479.6	c.821G>T	p.Gly274Val	missense_variant	6/8	1	NM_000154.2	ENSP00000465930	P1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152258 Hom.: 0 Cov.: 33

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1444414 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 718548

Gnomad4 AFR exome AF: 0.00

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152258 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74390

Gnomad4 AFR AF: 0.00

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: 0.0000147

Gnomad4 OTH AF: 0.00

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.063	T
BayesDel_noAF	Benign	-0.33
CADD	Benign	17
DANN	Benign	0.92
DEOGEN2	Benign	0.24	T;.;T
Eigen	Benign	-0.81
Eigen_PC	Benign	-0.54
FATHMM_MKL	Benign	0.61	D
LIST_S2	Benign	0.76	.;T;T
M_CAP	Uncertain	0.094	D
MetaRNN	Benign	0.067	T;T;T
MetaSVM	Benign	-0.87	T
MutationAssessor	Benign	-2.9	N;.;N
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Benign	0.44	T
PROVEAN	Benign	2.9	N;.;.
REVEL	Benign	0.15
Sift	Benign	0.66	T;.;.
Sift4G	Benign	0.93	T;T;T
Polyphen		0.020	B;.;B
Vest4		0.23
MutPred		0.41		Loss of ubiquitination at K272 (P = 0.063);.;Loss of ubiquitination at K272 (P = 0.063);
MVP		0.75
MPC		0.21
ClinPred		0.42	T
GERP RS		2.5
Varity_R		0.14
gMVP		0.47

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

Other links and lift over

dbSNP: rs959842362; hg19: chr17-73754653;