NM_018136.5:c.9773A>G

Variant names:

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_018136.5(ASPM):c.9773A>G(p.His3258Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00139 in 1,613,552 control chromosomes in the GnomAD database, including 14 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0069 ( 10 hom., cov: 32)

Exomes 𝑓: 0.00081 ( 4 hom. )

Consequence

ASPM
NM_018136.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8O:1

Conservation

PhyloP100: 2.41

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 -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008112043).

BP6

Variant 1-197090252-T-C is Benign according to our data. Variant chr1-197090252-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 21638.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-197090252-T-C is described in Lovd as [Benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00695 (1057/152190) while in subpopulation AFR AF= 0.0231 (959/41560). AF 95% confidence interval is 0.0219. There are 10 homozygotes in gnomad4. There are 499 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 10 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ASPM	NM_018136.5 link	c.9773A>G	p.His3258Arg	missense_variant	Exon 24 of 28	ENST00000367409.9	NP_060606.3	Q8IZT6-1B3KWI2
ASPM	NM_001206846.2 link	c.5018A>G	p.His1673Arg	missense_variant	Exon 23 of 27		NP_001193775.1	Q8IZT6-2B3KWI2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ASPM	ENST00000367409.9 link	c.9773A>G	p.His3258Arg	missense_variant	Exon 24 of 28	1	NM_018136.5	ENSP00000356379.4		Q8IZT6-1

Frequencies

GnomAD3 genomes

AF:

0.00694

AC:

1056

AN:

152072

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0231

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00480

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000265

Gnomad OTH

AF:

0.00239

GnomAD3 exomes

AF:

0.00200

AC:

502

AN:

251068

Hom.:

AF XY:

0.00153

AC XY:

207

AN XY:

135694

show subpopulations

Gnomad AFR exome

AF:

0.0241

Gnomad AMR exome

AF:

0.00205

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:

0.000264

Gnomad OTH exome

AF:

0.00147

GnomAD4 exome

AF:

0.000810

AC:

1184

AN:

1461362

Hom.:

Cov.:

AF XY:

0.000719

AC XY:

523

AN XY:

726994

show subpopulations

Gnomad4 AFR exome

AF:

0.0214

Gnomad4 AMR exome

AF:

0.00212

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.0000375

Gnomad4 NFE exome

AF:

0.000214

Gnomad4 OTH exome

AF:

0.00199

GnomAD4 genome

AF:

0.00695

AC:

1057

AN:

152190

Hom.:

Cov.:

AF XY:

0.00671

AC XY:

499

AN XY:

74388

show subpopulations

Gnomad4 AFR

AF:

0.0231

Gnomad4 AMR

AF:

0.00479

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000265

Gnomad4 OTH

AF:

0.00237

Alfa

AF:

0.00134

Hom.:

Bravo

AF:

0.00742

ESP6500AA

AF:

0.0216

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00239

AC:

290

Asia WGS

AF:

0.00116

AC:

AN:

3472

EpiCase

AF:

0.000327

EpiControl

AF:

0.000356

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Microcephaly 5, primary, autosomal recessive

Benign:3Other:1

Apr 11, 2023

Genome-Nilou Lab

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

GeneReviews

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

- -

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Nov 05, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Benign:3

Apr 19, 2017

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 18, 2018

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Benign:1

Feb 08, 2013

Genetic Services Laboratory, University of Chicago

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

ASPM-related disorder

Benign:1

Dec 18, 2023

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as 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

0.11

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.47

CADD

Benign

DANN

Benign

0.76

DEOGEN2

Benign

0.12

T;.;T

Eigen

Benign

-0.91

Eigen_PC

Benign

-0.77

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.62

T;T;T

MetaRNN

Benign

0.0081

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

L;.;.

PrimateAI

Benign

0.35

PROVEAN

Uncertain

-2.7

D;N;N

REVEL

Benign

0.060

Sift

Benign

0.20

T;T;T

Sift4G

Benign

0.12

T;T;T

Polyphen

0.0020

B;.;.

Vest4

0.18

MVP

0.24

ClinPred

0.010

GERP RS

3.0

Varity_R

0.051

gMVP

0.23

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