21-46326372-C-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6

The NM_001414902.1(LOC128092249):​c.85C>T​(p.Arg29Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,461,616 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 6/8 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

LOC128092249
NM_001414902.1 missense

Scores

1
2
Splicing: ADA: 0.001824
2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 2.70
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.34).
BP6
Variant 21-46326372-C-T is Benign according to our data. Variant chr21-46326372-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 159620.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
LOC128092249NM_001414902.1 linkuse as main transcriptc.85C>T p.Arg29Cys missense_variant 1/1 ENST00000652508.1 NP_001401831.1
PCNTNM_006031.6 linkuse as main transcriptc.55-5C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant ENST00000359568.10 NP_006022.3
PCNTNM_001315529.2 linkuse as main transcriptc.-300-5C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant NP_001302458.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ENST00000652508.1 linkuse as main transcriptc.85C>T p.Arg29Cys missense_variant 1/1 NM_001414902.1 ENSP00000498568 P1
PCNTENST00000359568.10 linkuse as main transcriptc.55-5C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 1 NM_006031.6 ENSP00000352572 P2O95613-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
0.00000411
AC:
6
AN:
1461616
Hom.:
0
Cov.:
31
AF XY:
0.00000550
AC XY:
4
AN XY:
727134
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000450
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33
Bravo
AF:
0.00000378

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Microcephalic osteodysplastic primordial dwarfism type II Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingGenetic Services Laboratory, University of ChicagoNov 12, 2013- -
not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpApr 15, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.45
BayesDel_noAF
Benign
-0.34
CADD
Pathogenic
26
DANN
Benign
0.88

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.0018
dbscSNV1_RF
Benign
0.0060
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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs587784310; hg19: chr21-47746286; COSMIC: COSV99388196; COSMIC: COSV99388196; API