21-46436979-G-C

Variant names:

Variant summary

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

The NM_006031.6(PCNT):c.8997G>C(p.Arg2999Ser) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,458,570 control chromosomes in the GnomAD database, with no homozygous occurrence. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R2999R) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

PCNT
NM_006031.6 missense, splice_region

Scores

Splicing: ADA: 0.8243

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.96

Publications

1 publications found

Variant links:

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

PCNT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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_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.8997G>C	p.Arg2999Ser	missense splice_region	Exon 40 of 47	NP_006022.3
	PCNT	NM_001315529.2		c.8406G>C	p.Arg2802Ser	missense splice_region	Exon 40 of 47	NP_001302458.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PCNT	ENST00000359568.10	TSL:1 MANE Select	c.8997G>C	p.Arg2999Ser	missense splice_region	Exon 40 of 47	ENSP00000352572.5
PCNT	ENST00000480896.5	TSL:1	c.8406G>C	p.Arg2802Ser	missense splice_region	Exon 40 of 47	ENSP00000511989.1
PCNT	ENST00000695558.1		c.9030G>C	p.Arg3010Ser	missense splice_region	Exon 41 of 48	ENSP00000512015.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251466

AF XY:

0.00000736

show subpopulations

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:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.86e-7

AC:

AN:

1458570

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

725902

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33388

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39678

South Asian (SAS)

AF:

0.00

AC:

AN:

86196

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53394

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

9.02e-7

AC:

AN:

1109036

Other (OTH)

AF:

0.00

AC:

AN:

60264

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.57

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.40

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.25

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.29

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.78

M_CAP

Benign

0.043

MetaRNN

Uncertain

0.64

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.9

PhyloP100

3.0

PrimateAI

Benign

0.30

PROVEAN

Uncertain

-3.7

REVEL

Benign

0.12

Sift

Benign

0.14

Sift4G

Uncertain

0.0050

Polyphen

1.0

Vest4

0.59

MutPred

0.26

Loss of MoRF binding (P = 0.0214)

MVP

0.68

MPC

0.29

ClinPred

0.96

GERP RS

4.6

PromoterAI

0.033

Neutral

(source)

Varity_R

0.25

gMVP

0.36

Mutation Taster

=65/35

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.82

dbscSNV1_RF

Benign

0.69

SpliceAI score (max)

0.12

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over