chr1-197122013-C-T

Position:

chr1-197122013-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The ENST00000367409.9(ASPM):c.3772G>A(p.Ala1258Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000552 in 1,612,068 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 Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. A1258A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00028 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000032 ( 0 hom. )

Consequence

ASPM
ENST00000367409.9 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 3.65

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 Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.16328135).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ASPM	NM_018136.5 linkuse as main transcript	c.3772G>A	p.Ala1258Thr	missense_variant	16/28	ENST00000367409.9	NP_060606.3
ASPM	NM_001206846.2 linkuse as main transcript	c.3772G>A	p.Ala1258Thr	missense_variant	16/27		NP_001193775.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ASPM	ENST00000367409.9 linkuse as main transcript	c.3772G>A	p.Ala1258Thr	missense_variant	16/28	1	NM_018136.5	ENSP00000356379	P1	Q8IZT6-1

Frequencies

GnomAD3 genomes

AF:

0.000277

AC:

AN:

151896

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00102

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

GnomAD3 exomes

AF:

0.0000681

AC:

AN:

249734

Hom.:

AF XY:

0.0000740

AC XY:

AN XY:

135068

show subpopulations

Gnomad AFR exome

AF:

0.00106

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000322

AC:

AN:

1460172

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

726440

show subpopulations

Gnomad4 AFR exome

AF:

0.00123

Gnomad4 AMR exome

AF:

0.00

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:

0.00

Gnomad4 OTH exome

AF:

0.0000995

GnomAD4 genome

AF:

0.000277

AC:

AN:

151896

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74192

show subpopulations

Gnomad4 AFR

AF:

0.00102

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000548

Hom.:

Bravo

AF:

0.000385

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000659

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 11, 2019	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Athena Diagnostics	Mar 01, 2019	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jul 28, 2023	In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt ASPM protein function. ClinVar contains an entry for this variant (Variation ID: 388993). This variant has not been reported in the literature in individuals affected with ASPM-related conditions. This variant is present in population databases (rs142214506, gnomAD 0.09%). This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 1258 of the ASPM protein (p.Ala1258Thr). -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Jun 22, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.089

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.15

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

T;.;T

Eigen

Uncertain

0.51

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.86

D;D;D

M_CAP

Benign

0.031

MetaRNN

Benign

0.16

T;T;T

MetaSVM

Uncertain

-0.062

MutationAssessor

Uncertain

2.3

M;M;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-2.3

N;N;N

REVEL

Uncertain

0.35

Sift

Uncertain

0.0040

D;T;T

Sift4G

Uncertain

0.0040

D;D;D

Polyphen

1.0

D;.;.

Vest4

0.40

MVP

0.77

ClinPred

0.16

GERP RS

4.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.11

gMVP

0.45

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.16

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