21-46324257-G-C

Variant names:

• chr21-46324257-G-C
• rs749953818
• NM_006031.6:c.29G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006031.6(PCNT):​c.29G>C​(p.Arg10Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,242 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 (no stars).

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 35)
• Consequence: PCNT NM_006031.6 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 0.923
• Publications: 1 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]

C21orf58 (HGNC:1300): (chromosome 21 open reading frame 58)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25846165).

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCNT	NM_006031.6	MANE Select	c.29G>C	p.Arg10Thr	missense	Exon 1 of 47	NP_006022.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCNT	ENST00000359568.10	TSL:1 MANE Select	c.29G>C	p.Arg10Thr	missense	Exon 1 of 47	ENSP00000352572.5	O95613-1
	C21orf58	ENST00000956568.1		c.-1519C>G		5_prime_UTR_premature_start_codon_gain	Exon 1 of 9	ENSP00000626627.1
	PCNT	ENST00000695558.1		c.29G>C	p.Arg10Thr	missense	Exon 1 of 48	ENSP00000512015.1	A0A8Q3SHZ3

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152242 Hom.: 0 Cov.: 35

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152242 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 74384

African (AFR) AF: 0.0000241 AC: 1 AN: 41474

American (AMR) AF: 0.00 AC: 0 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5196

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10628

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68030

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	1	-	PCNT-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.60
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.50
CADD	Benign	20
DANN	Benign	0.93
DEOGEN2	Benign	0.066	T
Eigen	Uncertain	0.27
Eigen_PC	Uncertain	0.26
FATHMM_MKL	Benign	0.35	N
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.068	D
MetaRNN	Benign	0.26	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.5	L
PhyloP100		0.92
PrimateAI	Pathogenic	0.81	D
PROVEAN	Uncertain	-2.5	D
REVEL	Benign	0.053
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.041	D
Polyphen		0.99	D
Vest4		0.45
MutPred		0.23		Gain of phosphorylation at R10 (P = 0.0205)
MVP		0.56
MPC		0.12
ClinPred		0.62	D
GERP RS		4.3
PromoterAI		-0.046	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.25
gMVP		0.061
Mutation Taster		=94/6	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs749953818; hg19: chr21-47744171;