1-59346396-G-A

Variant names:

• chr1-59346396-G-A
• rs372475252
• NM_018291.5:c.463G>A

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3

The NM_018291.5(FGGY):​c.463G>A​(p.Glu155Lys) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000304 in 1,611,204 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E155G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000031 (0 hom.)
• Consequence: FGGY NM_018291.5 missense, splice_region
• Scores: Splicing: ADA: 0.9677
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.71
• Publications: 0 publications found

Genes affected

FGGY (HGNC:25610): (FGGY carbohydrate kinase domain containing) This gene encodes a protein that phosphorylates carbohydrates such as ribulose, ribitol, and L-arabinitol. Genome-wide association studies in some populations have found an association between polymorphisms in this gene and sporadic amyotrophic lateral sclerosis, but studies of other populations have not been able to replicate this association. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2013]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FGGY	NM_018291.5	c.463G>A	p.Glu155Lys	missense_variant, splice_region_variant	Exon 4 of 16	ENST00000303721.12	NP_060761.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FGGY	ENST00000303721.12	c.463G>A	p.Glu155Lys	missense_variant, splice_region_variant	Exon 4 of 16	1	NM_018291.5	ENSP00000305922.8

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 152154 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000519 AC: 13 AN: 250368 AF XY: 0.0000591

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.000795

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000266

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000308 AC: 45 AN: 1459050 Hom.: 0 Cov.: 30 AF XY: 0.0000317 AC XY: 23 AN XY: 725810

African (AFR) AF: 0.0000300 AC: 1 AN: 33358

American (AMR) AF: 0.00 AC: 0 AN: 44662

Ashkenazi Jewish (ASJ) AF: 0.000536 AC: 14 AN: 26102

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.0000929 AC: 8 AN: 86142

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53382

Middle Eastern (MID) AF: 0.000725 AC: 3 AN: 4136

European-Non Finnish (NFE) AF: 0.0000153 AC: 17 AN: 1111418

Other (OTH) AF: 0.0000332 AC: 2 AN: 60164

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152154 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74334

African (AFR) AF: 0.00 AC: 0 AN: 41444

American (AMR) AF: 0.00 AC: 0 AN: 15266

Ashkenazi Jewish (ASJ) AF: 0.000288 AC: 1 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5194

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.000154 Hom.: 0

Bravo AF: 0.0000453

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.0000494 AC: 6

EpiCase AF: 0.000327

EpiControl AF: 0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jan 10, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.463G>A (p.E155K) alteration is located in exon 4 (coding exon 3) of the FGGY gene. This alteration results from a G to A substitution at nucleotide position 463, causing the glutamic acid (E) at amino acid position 155 to be replaced by a lysine (K). 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	Uncertain	0.40
BayesDel_addAF	Uncertain	0.086	D
BayesDel_noAF	Uncertain	0.070
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.012	T;.;T
Eigen	Uncertain	0.21
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Benign	0.75	D
LIST_S2	Pathogenic	0.99	D;D;D
M_CAP	Benign	0.031	D
MetaRNN	Benign	0.20	T;T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.5	.;L;L
PhyloP100		8.7
PrimateAI	Uncertain	0.76	T
PROVEAN	Benign	-0.84	N;N;N
REVEL	Benign	0.23
Sift	Benign	0.13	T;T;T
Sift4G	Benign	0.23	T;T;T
Polyphen		0.042, 0.035	.;B;B
Vest4		0.82, 0.84
MVP		0.56
MPC		0.039
ClinPred		0.19	T
GERP RS		5.5
Varity_R		0.65
gMVP		0.68
Mutation Taster		=30/70	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	0.97
dbscSNV1_RF	Pathogenic	0.80
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

Other links and lift over

dbSNP: rs372475252; hg19: chr1-59812068; COSMIC: COSV58041630; COSMIC: COSV58041630;