chr5-140114210-A-T

Position:

• chr5-140114210-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_005859.5(PURA):​c.29A>T​(p.Gln10Leu) 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: PURA NM_005859.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.73

Genes affected

PURA (HGNC:9701): (purine rich element binding protein A) This gene product is a sequence-specific, single-stranded DNA-binding protein. It binds preferentially to the single strand of the purine-rich element termed PUR, which is present at origins of replication and in gene flanking regions in a variety of eukaryotes from yeasts through humans. Thus, it is implicated in the control of both DNA replication and transcription. Deletion of this gene has been associated with myelodysplastic syndrome and acute myelogenous leukemia. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PURA. . Gene score misZ 3.3704 (greater than the threshold 3.09). Trascript score misZ 4.4395 (greater than threshold 3.09). GenCC has associacion of gene with intellectual disability, autosomal dominant 40, PURA-related severe neonatal hypotonia-seizures-encephalopathy syndrome due to a point mutation, complex neurodevelopmental disorder.
• BP4: Computational evidence support a benign effect (MetaRNN=0.1843425).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PURA	NM_005859.5	c.29A>T	p.Gln10Leu	missense_variant	1/1	ENST00000331327.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PURA	ENST00000331327.5	c.29A>T	p.Gln10Leu	missense_variant	1/1		NM_005859.5	P1
PURA	ENST00000651386.1	c.29A>T	p.Gln10Leu	missense_variant	2/2			P1
PURA	ENST00000505703.2	c.29A>T	p.Gln10Leu	missense_variant	2/2	3
PURA	ENST00000502351.1	c.29A>T	p.Gln10Leu	missense_variant	2/2	2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 10

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

PURA-related severe neonatal hypotonia-seizures-encephalopathy syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 18, 2023

This sequence change replaces glutamine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 10 of the PURA protein (p.Gln10Leu). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate insufficient coverage at this position in the gnomAD database. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. This variant has not been reported in the literature in individuals affected with PURA-related conditions. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Uncertain	0.026	T
BayesDel_noAF	Benign	-0.20
CADD	Uncertain	25
DANN	Uncertain	0.98
DEOGEN2	Benign	0.39	T
Eigen	Benign	-0.39
Eigen_PC	Benign	-0.26
FATHMM_MKL	Benign	0.69	D
LIST_S2	Benign	0.67	T
M_CAP	Pathogenic	0.87	D
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-0.63	T
MutationAssessor	Benign	0.34	N
MutationTaster	Benign	0.95	D
PrimateAI	Pathogenic	0.82	D
PROVEAN	Benign	-0.93	N
REVEL	Benign	0.23
Sift	Benign	0.12	T
Sift4G	Benign	0.28	T
Polyphen		0.043	B
Vest4		0.25
MutPred		0.12		Loss of solvent accessibility (P = 0.0217);
MVP		0.60
MPC		1.6
ClinPred		0.30	T
GERP RS		2.3
Varity_R		0.087
gMVP		0.33

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-139493795;