22-38112212-A-T

Variant names:

• chr22-38112212-A-T
• rs121908680
• NM_003560.4:c.2370T>A

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_Moderate PM2

The NM_003560.4(PLA2G6):​c.2370T>A​(p.Tyr790*) variant causes a stop gained change involving the alteration of a non-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: 33)
• Consequence: PLA2G6 NM_003560.4 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.103
• Publications: 2 publications found

Genes affected

PLA2G6 (HGNC:9039): (phospholipase A2 group VI) The protein encoded by this gene is an A2 phospholipase, a class of enzyme that catalyzes the release of fatty acids from phospholipids. The encoded protein may play a role in phospholipid remodelling, arachidonic acid release, leukotriene and prostaglandin synthesis, fas-mediated apoptosis, and transmembrane ion flux in glucose-stimulated B-cells. Several transcript variants encoding multiple isoforms have been described, but the full-length nature of only three of them have been determined to date. [provided by RefSeq, Dec 2010]

PLA2G6 Gene-Disease associations (from GenCC):

• neurodegeneration with brain iron accumulation 2A

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet
• neurodegeneration with brain iron accumulation 2B

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• PLA2G6-associated neurodegeneration

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• autosomal recessive Parkinson disease 14

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0211 CDS is truncated, and there are 3 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003560.4. 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
	PLA2G6	NM_003560.4	MANE Select	c.2370T>A	p.Tyr790*	stop_gained	Exon 17 of 17	NP_003551.2
	PLA2G6	NM_001349864.2		c.2370T>A	p.Tyr790*	stop_gained	Exon 17 of 17	NP_001336793.1	O60733-1
	PLA2G6	NM_001004426.3		c.2208T>A	p.Tyr736*	stop_gained	Exon 16 of 16	NP_001004426.1	O60733-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PLA2G6	ENST00000332509.8	TSL:1 MANE Select	c.2370T>A	p.Tyr790*	stop_gained	Exon 17 of 17	ENSP00000333142.3	O60733-1
	PLA2G6	ENST00000402064.5	TSL:1	c.2208T>A	p.Tyr736*	stop_gained	Exon 16 of 16	ENSP00000386100.1	O60733-2
	PLA2G6	ENST00000668949.1		c.2412T>A	p.Tyr804*	stop_gained	Exon 17 of 17	ENSP00000499711.1	A0A590UK51

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.48
CADD	Pathogenic	33
DANN	Uncertain	0.98
Eigen	Benign	0.0057
Eigen_PC	Benign	-0.30
FATHMM_MKL	Benign	0.72	D
PhyloP100		0.10
Vest4		0.73
GERP RS		-5.9
Mutation Taster		=0/200	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: rs121908680; hg19: chr22-38508219;