22-38169411-G-T

Variant names:

• chr22-38169411-G-T
• rs143250889
• NM_003560.4:c.16C>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_003560.4(PLA2G6):​c.16C>A​(p.Arg6Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. R6C) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PLA2G6 NM_003560.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.62
• Publications: 6 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, Genomics England PanelApp, Orphanet, Labcorp Genetics (formerly Invitae)
• 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: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• 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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PLA2G6	NM_003560.4	MANE Select	c.16C>A	p.Arg6Ser	missense	Exon 2 of 17	NP_003551.2
	PLA2G6	NM_001349864.2		c.16C>A	p.Arg6Ser	missense	Exon 2 of 17	NP_001336793.1
	PLA2G6	NM_001004426.3		c.16C>A	p.Arg6Ser	missense	Exon 2 of 16	NP_001004426.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PLA2G6	ENST00000332509.8	TSL:1 MANE Select	c.16C>A	p.Arg6Ser	missense	Exon 2 of 17	ENSP00000333142.3
	PLA2G6	ENST00000402064.5	TSL:1	c.16C>A	p.Arg6Ser	missense	Exon 2 of 16	ENSP00000386100.1
	PLA2G6	ENST00000668949.1		c.16C>A	p.Arg6Ser	missense	Exon 2 of 17	ENSP00000499711.1

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	0.81
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.040
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.16	T
Eigen	Benign	0.00063
Eigen_PC	Benign	0.046
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.23	D
MetaRNN	Uncertain	0.48	T
MetaSVM	Uncertain	-0.27	T
MutationAssessor	Uncertain	2.4	M
PhyloP100		4.6
PrimateAI	Uncertain	0.59	T
PROVEAN	Benign	-1.6	N
REVEL	Uncertain	0.30
Sift	Benign	0.11	T
Sift4G	Benign	0.16	T
Polyphen		0.31	B
Vest4		0.71
MutPred		0.46		Loss of MoRF binding (P = 6e-04)
MVP		0.84
MPC		0.73
ClinPred		0.94	D
GERP RS		3.6
Varity_R		0.20
gMVP		0.77
Mutation Taster		=64/36	polymorphism

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: rs143250889; hg19: chr22-38565418;