1-63654414-T-G

Variant names:

• chr1-63654414-T-G
• rs587777401
• NM_002633.3:c.1547T>G

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PM5 PP3_Strong

The NM_002633.3(PGM1):​c.1547T>G​(p.Leu516Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L516P) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PGM1 NM_002633.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.96
• Publications: 5 publications found

Genes affected

PGM1 (HGNC:8905): (phosphoglucomutase 1) The protein encoded by this gene is an isozyme of phosphoglucomutase (PGM) and belongs to the phosphohexose mutase family. There are several PGM isozymes, which are encoded by different genes and catalyze the transfer of phosphate between the 1 and 6 positions of glucose. In most cell types, this PGM isozyme is predominant, representing about 90% of total PGM activity. In red cells, PGM2 is a major isozyme. This gene is highly polymorphic. Mutations in this gene cause glycogen storage disease type 14. Alternativley spliced transcript variants encoding different isoforms have been identified in this gene.[provided by RefSeq, Mar 2010]

PGM1 Gene-Disease associations (from GenCC):

• PGM1-congenital disorder of glycosylation

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Genomics England PanelApp, Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 9 uncertain in NM_002633.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr1-63654414-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 133286.Status of the report is no_assertion_criteria_provided, 0 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.962

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002633.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PGM1	NM_002633.3	MANE Select	c.1547T>G	p.Leu516Arg	missense	Exon 10 of 11	NP_002624.2
	PGM1	NM_001172818.1		c.1601T>G	p.Leu534Arg	missense	Exon 10 of 11	NP_001166289.1	P36871-2
	PGM1	NM_001172819.2		c.956T>G	p.Leu319Arg	missense	Exon 10 of 11	NP_001166290.1	P36871-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PGM1	ENST00000371084.8	TSL:1 MANE Select	c.1547T>G	p.Leu516Arg	missense	Exon 10 of 11	ENSP00000360125.3	P36871-1
	PGM1	ENST00000895883.1		c.1643T>G	p.Leu548Arg	missense	Exon 11 of 12	ENSP00000565942.1
	PGM1	ENST00000650546.1		c.1547T>G	p.Leu516Arg	missense	Exon 10 of 12	ENSP00000497812.1	A0A3B3ITK7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.34	D
BayesDel_noAF	Pathogenic	0.25
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.86	D
Eigen	Uncertain	0.65
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.96	D
MetaSVM	Uncertain	-0.011	T
MutationAssessor	Pathogenic	3.9	H
PhyloP100		8.0
PrimateAI	Uncertain	0.74	T
PROVEAN	Pathogenic	-4.7	D
REVEL	Pathogenic	0.85
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.94
MutPred		0.85		Loss of stability (P = 0.0126)
MVP		0.81
MPC		0.86
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.98
gMVP		0.92
Mutation Taster		=12/88	disease causing

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

Other links and lift over

dbSNP: rs587777401; hg19: chr1-64120085;