chr6-162727668-T-A

Variant names:

• chr6-162727668-T-A
• rs772786691
• NM_004562.3:c.1A>T

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PS1_Moderate PM2

The NM_004562.3(PRKN):​c.1A>T​(p.Met1?) variant causes a initiator codon 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.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PRKN NM_004562.3 initiator_codon
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.72
• Publications: 3 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]

PACRG (HGNC:19152): (parkin coregulated) This gene encodes a protein that is conserved across metazoans. In vertebrates, this gene is linked in a head-to-head arrangement with the adjacent parkin gene, which is associated with autosomal recessive juvenile Parkinson's disease. These genes are co-regulated in various tissues and they share a bi-directional promoter. Both genes are associated with susceptibility to leprosy. The parkin co-regulated gene protein forms a large molecular complex with chaperones, including heat shock proteins 70 and 90, and chaperonin components. This protein is also a component of Lewy bodies in Parkinson's disease patients, and it suppresses unfolded Pael receptor-induced neuronal cell death. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Start lost variant, next in-frame start position is after 13 pathogenic variants. Next in-frame start position is after 80 codons. Genomic position: 162262699. Lost 0.170 part of the original CDS.
• PS1: Another start lost variant in NM_004562.3 (PRKN) was described as [Likely_pathogenic] in ClinVar
• PM2: Very rare variant in population databases, with high coverage

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKN	NM_004562.3	MANE Select	c.1A>T	p.Met1?	initiator_codon	Exon 1 of 12	NP_004553.2	O60260-1
	PRKN	NM_013987.3		c.1A>T	p.Met1?	initiator_codon	Exon 1 of 11	NP_054642.2	O60260-2
	PRKN	NM_013988.3		c.1A>T	p.Met1?	initiator_codon	Exon 1 of 9	NP_054643.2	O60260-6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRKN	ENST00000366898.6	TSL:1 MANE Select	c.1A>T	p.Met1?	initiator_codon	Exon 1 of 12	ENSP00000355865.1	O60260-1
	PRKN	ENST00000366897.5	TSL:1	c.1A>T	p.Met1?	initiator_codon	Exon 1 of 11	ENSP00000355863.1	O60260-2
	PRKN	ENST00000366896.5	TSL:1	c.1A>T	p.Met1?	initiator_codon	Exon 1 of 9	ENSP00000355862.1	O60260-6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1431164 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 709352

African (AFR) AF: 0.00 AC: 0 AN: 32678

American (AMR) AF: 0.00 AC: 0 AN: 40720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25558

East Asian (EAS) AF: 0.00 AC: 0 AN: 37632

South Asian (SAS) AF: 0.00 AC: 0 AN: 82014

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49952

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5736

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1097750

Other (OTH) AF: 0.00 AC: 0 AN: 59124

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.53	D
BayesDel_noAF	Pathogenic	0.53
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.13	T
Eigen	Benign	0.15
Eigen_PC	Uncertain	0.22
FATHMM_MKL	Benign	0.73	D
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.99	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Uncertain	0.54	D
PhyloP100		3.7
PROVEAN	Benign	-0.44	N
REVEL	Pathogenic	0.72
Sift	Benign	1.0	T
Sift4G	Benign	1.0	T
Polyphen		0.88	P
Vest4		0.87
MutPred		0.93		Loss of disorder (P = 0.0576)
MVP		0.97
ClinPred		0.99	D
GERP RS		5.2
PromoterAI		-0.074	Neutral
Varity_R		0.58
gMVP		0.38
Mutation Taster		=4/196	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs772786691; hg19: chr6-163148700;