NM_006031.6:c.7977G>A

Variant names:

• chr21-46430570-G-A
• rs2070426
• NM_006031.6:c.7977G>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_006031.6(PCNT):​c.7977G>A​(p.Gln2659Gln) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PCNT NM_006031.6 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.90
• Publications: 47 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: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP7: Synonymous conserved (PhyloP=-2.9 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PCNT	NM_006031.6	c.7977G>A	p.Gln2659Gln	synonymous_variant	Exon 37 of 47	ENST00000359568.10	NP_006022.3
PCNT	NM_001315529.2	c.7623G>A	p.Gln2541Gln	synonymous_variant	Exon 37 of 47		NP_001302458.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PCNT	ENST00000359568.10	c.7977G>A	p.Gln2659Gln	synonymous_variant	Exon 37 of 47	1	NM_006031.6	ENSP00000352572.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1407820 Hom.: 0 Cov.: 58 AF XY: 0.00 AC XY: 0 AN XY: 695346

African (AFR) AF: 0.00 AC: 0 AN: 32180

American (AMR) AF: 0.00 AC: 0 AN: 36832

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25286

East Asian (EAS) AF: 0.00 AC: 0 AN: 36742

South Asian (SAS) AF: 0.00 AC: 0 AN: 79892

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49744

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1084544

Other (OTH) AF: 0.00 AC: 0 AN: 58284

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	0.0070
DANN	Benign	0.29
PhyloP100		-2.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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: rs2070426; hg19: chr21-47850484;