21-46399692-G-A

Variant names:

• chr21-46399692-G-A
• rs746297554
• NM_006031.6:c.4687G>A

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_006031.6(PCNT):​c.4687G>A​(p.Glu1563Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,610 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E1563Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PCNT NM_006031.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.70
• Publications: 2 publications found

Genes affected

PCNT (HGNC:16068): (pericentrin) The protein encoded by this gene binds to calmodulin and is expressed in the centrosome. It is an integral component of the pericentriolar material (PCM). The protein contains a series of coiled-coil domains and a highly conserved PCM targeting motif called the PACT domain near its C-terminus. The protein interacts with the microtubule nucleation component gamma-tubulin and is likely important to normal functioning of the centrosomes, cytoskeleton, and cell-cycle progression. Mutations in this gene cause Seckel syndrome-4 and microcephalic osteodysplastic primordial dwarfism type II. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

PCNT Gene-Disease associations (from GenCC):

• microcephalic osteodysplastic primordial dwarfism type II

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
• Moyamoya disease

  Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.36579436).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006031.6. 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
	PCNT	NM_006031.6	MANE Select	c.4687G>A	p.Glu1563Lys	missense	Exon 25 of 47	NP_006022.3
	PCNT	NM_001315529.2		c.4333G>A	p.Glu1445Lys	missense	Exon 25 of 47	NP_001302458.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCNT	ENST00000359568.10	TSL:1 MANE Select	c.4687G>A	p.Glu1563Lys	missense	Exon 25 of 47	ENSP00000352572.5
	PCNT	ENST00000480896.5	TSL:1	c.4333G>A	p.Glu1445Lys	missense	Exon 25 of 47	ENSP00000511989.1
	PCNT	ENST00000695558.1		c.4720G>A	p.Glu1574Lys	missense	Exon 26 of 48	ENSP00000512015.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461610 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727124

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

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

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53406

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111780

Other (OTH) AF: 0.00 AC: 0 AN: 60382

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.23
BayesDel_addAF	Uncertain	0.077	D
BayesDel_noAF	Benign	-0.13
CADD	Uncertain	26
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.34	T
Eigen	Pathogenic	0.74
Eigen_PC	Pathogenic	0.72
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.084	D
MetaRNN	Benign	0.37	T
MetaSVM	Uncertain	0.042	D
MutationAssessor	Uncertain	2.8	M
PhyloP100		5.7
PrimateAI	Uncertain	0.51	T
PROVEAN	Uncertain	-3.5	D
REVEL	Benign	0.27
Sift	Benign	0.058	T
Sift4G	Uncertain	0.0090	D
Polyphen		1.0	D
Vest4		0.44
MutPred		0.34		Gain of MoRF binding (P = 0.0089)
MVP		0.76
MPC		0.30
ClinPred		0.96	D
GERP RS		5.7
Varity_R		0.23
gMVP		0.51
Mutation Taster		=82/18	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: rs746297554; hg19: chr21-47819606;