rs137852963

Variant names:

• chr20-3912634-G-A
• rs137852963
• NM_001386393.1:c.1082G>A

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PM1 PM2 PP2 PP3_Strong PP5_Moderate

The NM_001386393.1(PANK2):​c.1082G>A​(p.Ser361Asn) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,800 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PANK2 NM_001386393.1 missense, splice_region
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 9.91
• Publications: 10 publications found

Genes affected

PANK2 (HGNC:15894): (pantothenate kinase 2) This gene encodes a protein belonging to the pantothenate kinase family and is the only member of that family to be expressed in mitochondria. Pantothenate kinase is a key regulatory enzyme in the biosynthesis of coenzyme A (CoA) in bacteria and mammalian cells. It catalyzes the first committed step in the universal biosynthetic pathway leading to CoA and is itself subject to regulation through feedback inhibition by acyl CoA species. Mutations in this gene are associated with HARP syndrome and pantothenate kinase-associated neurodegeneration (PKAN), formerly Hallervorden-Spatz syndrome. Alternative splicing, involving the use of alternate first exons, results in multiple transcripts encoding different isoforms. [provided by RefSeq, Jul 2008]

PANK2 Gene-Disease associations (from GenCC):

• pantothenate kinase-associated neurodegeneration

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_001386393.1
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 41 curated pathogenic missense variants (we use a threshold of 10). The gene has 11 curated benign missense variants. Gene score misZ: 0.17856 (below the threshold of 3.09). Trascript score misZ: -0.052065 (below the threshold of 3.09). GenCC associations: The gene is linked to pantothenate kinase-associated neurodegeneration.
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.
• PP5: Variant 20-3912634-G-A is Pathogenic according to our data. Variant chr20-3912634-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 4552.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001386393.1. 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
	PANK2	NM_001386393.1	MANE Select	c.1082G>A	p.Ser361Asn	missense splice_region	Exon 4 of 7	NP_001373322.1
	PANK2	NM_153638.4		c.1412G>A	p.Ser471Asn	missense splice_region	Exon 4 of 7	NP_705902.2
	PANK2	NM_001324191.2		c.539G>A	p.Ser180Asn	missense splice_region	Exon 5 of 8	NP_001311120.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PANK2	ENST00000610179.7	TSL:1 MANE Select	c.1082G>A	p.Ser361Asn	missense splice_region	Exon 4 of 7	ENSP00000477429.2
	PANK2	ENST00000316562.9	TSL:1	c.1412G>A	p.Ser471Asn	missense splice_region	Exon 4 of 7	ENSP00000313377.4
	PANK2	ENST00000621507.1	TSL:1	c.539G>A	p.Ser180Asn	missense splice_region	Exon 4 of 7	ENSP00000481523.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461800 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727188

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53414

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111942

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Likely pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
2	-	-	Pigmentary pallidal degeneration (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Pathogenic	0.14
CADD	Pathogenic	36
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.91	D
Eigen	Pathogenic	0.89
Eigen_PC	Pathogenic	0.84
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Pathogenic	0.59	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	2.9	M
PhyloP100		9.9
PrimateAI	Pathogenic	0.82	D
PROVEAN	Uncertain	-2.8	D
REVEL	Pathogenic	0.85
Sift	Uncertain	0.021	D
Sift4G	Uncertain	0.0020	D
Polyphen		1.0	D
Vest4		0.76
MutPred		0.97		Loss of disorder (P = 0.099)
MVP		0.99
MPC		1.2
ClinPred		0.99	D
GERP RS		4.9
RBP_binding_hub_radar		0.77
RBP_regulation_power_radar		3.6
Varity_R		0.86
gMVP		0.92
Mutation Taster		=2/98	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.99
SpliceAI score (max)		0.45		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.45		Position offset: -33

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs137852963; hg19: chr20-3893281;