chr6-161973317-G-T

Variant names:

• chr6-161973317-G-T
• rs137853054
• NM_004562.3:c.719C>A

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PM5 PP3_Moderate

The NM_004562.3(PRKN):​c.719C>A​(p.Thr240Lys) variant causes a missense change. 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T240M) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: PRKN NM_004562.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.04
• Publications: 141 publications found

Genes affected

PRKN (HGNC:8607): (parkin RBR E3 ubiquitin protein ligase) The precise function of this gene is unknown; however, the encoded protein is a component of a multiprotein E3 ubiquitin ligase complex that mediates the targeting of substrate proteins for proteasomal degradation. Mutations in this gene are known to cause Parkinson disease and autosomal recessive juvenile Parkinson disease. Alternative splicing of this gene produces multiple transcript variants encoding distinct isoforms. Additional splice variants of this gene have been described but currently lack transcript support. [provided by RefSeq, Jul 2008]

PRKN Gene-Disease associations (from GenCC):

• autosomal recessive juvenile Parkinson disease 2

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Genomics England PanelApp
• Parkinson disease

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• young-onset Parkinson disease

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr6-161973317-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 7054.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.877

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004562.3. 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
	PRKN	NM_004562.3	MANE Select	c.719C>A	p.Thr240Lys	missense	Exon 6 of 12	NP_004553.2
	PRKN	NM_013987.3		c.635C>A	p.Thr212Lys	missense	Exon 5 of 11	NP_054642.2
	PRKN	NM_013988.3		c.272C>A	p.Thr91Lys	missense	Exon 3 of 9	NP_054643.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKN	ENST00000366898.6	TSL:1 MANE Select	c.719C>A	p.Thr240Lys	missense	Exon 6 of 12	ENSP00000355865.1
	PRKN	ENST00000366897.5	TSL:1	c.635C>A	p.Thr212Lys	missense	Exon 5 of 11	ENSP00000355863.1
	PRKN	ENST00000366896.5	TSL:1	c.272C>A	p.Thr91Lys	missense	Exon 3 of 9	ENSP00000355862.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000795 AC: 2 AN: 251448 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.0000165 AC: 2

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.32
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Benign	0.34	T
Eigen	Uncertain	0.24
Eigen_PC	Uncertain	0.28
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.022	T
MetaRNN	Pathogenic	0.88	D
MetaSVM	Uncertain	0.17	D
PhyloP100		7.0
PrimateAI	Benign	0.43	T
PROVEAN	Benign	-2.2	N
REVEL	Uncertain	0.62
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.0070	D
Polyphen		0.33	B
Vest4		0.82
MutPred		0.81		Gain of ubiquitination at T240 (P = 0.0267)
MVP		0.98
MPC		0.091
ClinPred		0.85	D
GERP RS		5.1
Varity_R		0.69
gMVP		0.59
Mutation Taster		=2/98	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: rs137853054; hg19: chr6-162394349;