rs143822761

Positions:

chr1-197104518-C-T

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_018136.5(ASPM):c.4733G>A(p.Arg1578Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00025 in 1,612,426 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/20 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: 𝑓 0.0014 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

ASPM
NM_018136.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: -0.631

Variant links:

Genes affected

ASPM (HGNC:19048): (assembly factor for spindle microtubules) This gene is the human ortholog of the Drosophila melanogaster 'abnormal spindle' gene (asp), which is essential for normal mitotic spindle function in embryonic neuroblasts. Studies in mouse also suggest a role of this gene in mitotic spindle regulation, with a preferential role in regulating neurogenesis. Mutations in this gene are associated with microcephaly primary type 5. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, May 2011]

ASPM links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0079114735).

BP6

Variant 1-197104518-C-T is Benign according to our data. Variant chr1-197104518-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 157825.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=2}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00139 (212/151980) while in subpopulation AFR AF= 0.00472 (196/41524). AF 95% confidence interval is 0.00418. There are 2 homozygotes in gnomad4. There are 103 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ASPM	NM_018136.5 linkuse as main transcript	c.4733G>A	p.Arg1578Gln	missense_variant	18/28	ENST00000367409.9
ASPM	NM_001206846.2 linkuse as main transcript	c.4066-8354G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ASPM	ENST00000367409.9 linkuse as main transcript	c.4733G>A	p.Arg1578Gln	missense_variant	18/28	1	NM_018136.5	P1	Q8IZT6-1

Frequencies

GnomAD3 genomes

AF:

0.00141

AC:

214

AN:

151862

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00478

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000659

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:

0.0000295

Gnomad OTH

AF:

0.00192

GnomAD3 exomes

AF:

0.000349

AC:

AN:

249058

Hom.:

AF XY:

0.000238

AC XY:

AN XY:

134734

show subpopulations

Gnomad AFR exome

AF:

0.00479

Gnomad AMR exome

AF:

0.000204

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000330

GnomAD4 exome

AF:

0.000131

AC:

191

AN:

1460446

Hom.:

Cov.:

AF XY:

0.000113

AC XY:

AN XY:

726528

show subpopulations

Gnomad4 AFR exome

AF:

0.00449

Gnomad4 AMR exome

AF:

0.000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000144

Gnomad4 OTH exome

AF:

0.000232

GnomAD4 genome

AF:

0.00139

AC:

212

AN:

151980

Hom.:

Cov.:

AF XY:

0.00139

AC XY:

103

AN XY:

74286

show subpopulations

Gnomad4 AFR

AF:

0.00472

Gnomad4 AMR

AF:

0.000658

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000295

Gnomad4 OTH

AF:

0.00190

Alfa

AF:

0.000228

Hom.:

Bravo

AF:

0.00161

ESP6500AA

AF:

0.00522

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000412

AC:

EpiCase

AF:

0.0000546

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 13, 2019	- -
Likely benign, criteria provided, single submitter	clinical testing	Invitae	Dec 18, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Sep 15, 2016	- -

Microcephaly 5, primary, autosomal recessive

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

May 20, 2014

- -

ASPM-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Oct 12, 2020

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.48

CADD

Benign

3.4

DANN

Benign

0.95

DEOGEN2

Benign

0.021

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.069

LIST_S2

Benign

0.70

M_CAP

Uncertain

0.097

MetaRNN

Benign

0.0079

MetaSVM

Benign

-0.77

MutationAssessor

Benign

1.1

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.21

PROVEAN

Benign

-0.66

REVEL

Benign

0.26

Sift

Benign

0.072

Sift4G

Uncertain

0.050

Polyphen

0.80

Vest4

0.065

MVP

0.53

ClinPred

0.012

GERP RS

-8.0

Varity_R

0.021

gMVP

0.018

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

Publications

LitVar

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over