22-50176995-G-A

Position:

• chr22-50176995-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_052839.4(PANX2):​c.283G>A​(p.Ala95Thr) 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.

• Frequency: Genomes: not found (cov: 34)
• Consequence: PANX2 NM_052839.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.37

Genes affected

PANX2 (HGNC:8600): (pannexin 2) The protein encoded by this gene belongs to the innexin family. Innexin family members are the structural components of gap junctions. This protein and pannexin 1 are abundantly expressed in central nervous system (CNS) and are coexpressed in various neuronal populations. Studies in Xenopus oocytes suggest that this protein alone and in combination with pannexin 1 may form cell type-specific gap junctions with distinct properties. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2009]

PANX2 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.769

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PANX2	NM_052839.4	c.283G>A	p.Ala95Thr	missense_variant	2/3	ENST00000395842.3	NP_443071.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PANX2	ENST00000395842.3	c.283G>A	p.Ala95Thr	missense_variant	2/3	2	NM_052839.4	ENSP00000379183.2
PANX2	ENST00000159647.9	c.283G>A	p.Ala95Thr	missense_variant	2/4	1		ENSP00000159647.5
PANX2	ENST00000402472.2	n.*70G>A		non_coding_transcript_exon_variant	3/5	2		ENSP00000384148.2
PANX2	ENST00000402472.2	n.*70G>A		3_prime_UTR_variant	3/5	2		ENSP00000384148.2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 34

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 27, 2024

The c.283G>A (p.A95T) alteration is located in exon 2 (coding exon 2) of the PANX2 gene. This alteration results from a G to A substitution at nucleotide position 283, causing the alanine (A) at amino acid position 95 to be replaced by a threonine (T). 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	Pathogenic	0.82
BayesDel_addAF	Uncertain	0.081	D
BayesDel_noAF	Benign	-0.12
CADD	Pathogenic	33
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.022	.;T
Eigen	Uncertain	0.63
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D;D
M_CAP	Benign	0.036	D
MetaRNN	Pathogenic	0.77	D;D
MetaSVM	Benign	-0.93	T
MutationAssessor	Benign	1.6	L;L
PrimateAI	Pathogenic	0.89	D
PROVEAN	Benign	-0.97	N;N
REVEL	Benign	0.21
Sift	Benign	0.10	T;T
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;D
Vest4		0.84
MVP		0.34
MPC		2.5
ClinPred		0.94	D
GERP RS		4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.21
gMVP		0.71

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

LitVar

Other links and lift over

dbSNP: rs998048101; hg19: chr22-50615424;