1-63593562-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_002633.3(PGM1):c.74G>A(p.Arg25Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 11/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PGM1 NM_002633.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.32

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]

ITGB3BP (HGNC:6157): (integrin subunit beta 3 binding protein) This gene encodes a transcriptional coregulator that binds to and enhances the activity of members of the nuclear receptor families, thyroid hormone receptors and retinoid X receptors. This protein also acts as a corepressor of NF-kappaB-dependent signaling. This protein induces apoptosis in breast cancer cells through a caspase 2-mediated signaling pathway. This protein is also a component of the centromere-specific histone H3 variant nucleosome associated complex (CENP-NAC) and may be involved in mitotic progression by recruiting the histone H3 variant CENP-A to the centromere. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Sep 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.39110136).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PGM1	NM_002633.3	c.74G>A	p.Arg25Gln	missense_variant	1/11	ENST00000371084.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PGM1	ENST00000371084.8	c.74G>A	p.Arg25Gln	missense_variant	1/11	1	NM_002633.3	P1
PGM1	ENST00000650546.1	c.74G>A	p.Arg25Gln	missense_variant	1/12
ITGB3BP	ENST00000478138.1	n.160C>T		non_coding_transcript_exon_variant	1/5	3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Mar 01, 2019

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.050
Cadd	Pathogenic	26
Dann	Pathogenic	1.0
DEOGEN2	Uncertain	0.48	T;.
Eigen	Benign	0.033
Eigen_PC	Benign	0.15
FATHMM_MKL	Benign	0.57	D
LIST_S2	Pathogenic	0.99	D;D
M_CAP	Benign	0.071	D
MetaRNN	Benign	0.39	T;T
MetaSVM	Benign	-0.86	T
MutationAssessor	Benign	1.1	L;.
MutationTaster	Benign	0.95	N
PROVEAN	Benign	-0.12	N;.
REVEL	Benign	0.28
Sift	Benign	0.050	D;.
Sift4G	Uncertain	0.035	D;.
Polyphen		0.092	B;.
Vest4		0.33
MutPred		0.60		Loss of methylation at R25 (P = 0.0643);Loss of methylation at R25 (P = 0.0643);
MVP		0.72
ClinPred		0.63	D
GERP RS		4.1
Varity_R		0.50

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

Other links and lift over

dbSNP: rs1570463821; hg19: chr1-64059233;