1-59457044-A-G

Variant names:

• chr1-59457044-A-G
• rs748586572
• NM_018291.5:c.638A>G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_018291.5(FGGY):​c.638A>G​(p.Glu213Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000684 in 1,461,688 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000068 (0 hom.)
• Consequence: FGGY NM_018291.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.62

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

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FGGY	NM_018291.5	c.638A>G	p.Glu213Gly	missense_variant	Exon 6 of 16	ENST00000303721.12	NP_060761.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FGGY	ENST00000303721.12	c.638A>G	p.Glu213Gly	missense_variant	Exon 6 of 16	1	NM_018291.5	ENSP00000305922.8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000684 AC: 10 AN: 1461688 Hom.: 0 Cov.: 30 AF XY: 0.00000688 AC XY: 5 AN XY: 727154

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: 0.00000809

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000579 Hom.: 0

Bravo AF: 0.00000756

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.00 AC: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jan 23, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.638A>G (p.E213G) alteration is located in exon 6 (coding exon 5) of the FGGY gene. This alteration results from a A to G substitution at nucleotide position 638, causing the glutamic acid (E) at amino acid position 213 to be replaced by a glycine (G). 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	0.086
BayesDel_addAF	Uncertain	0.16	D
BayesDel_noAF	Uncertain	-0.010
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.067	.;T;.
Eigen	Benign	-0.0026
Eigen_PC	Benign	0.20
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.96	D;D;D
M_CAP	Benign	0.025	T
MetaRNN	Uncertain	0.54	D;D;D
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.86	L;L;.
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-2.6	D;D;N
REVEL	Benign	0.25
Sift	Benign	0.42	T;T;T
Sift4G	Benign	0.50	T;T;T
Polyphen		0.054	B;B;.
Vest4		0.71
MutPred		0.60		Loss of stability (P = 0.0271);Loss of stability (P = 0.0271);.;
MVP		0.35
MPC		0.038
ClinPred		0.98	D
GERP RS		5.2
Varity_R		0.33
gMVP		0.83

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.24		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.24		Position offset: 32

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs748586572; hg19: chr1-59922716;