rs150327858

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_018136.5(ASPM):c.6125A>G(p.Asp2042Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000191 in 1,612,834 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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 0.0010 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

ASPM
NM_018136.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:5

Conservation

PhyloP100: 1.68

Publications

5 publications found

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 Gene-Disease associations (from GenCC):

microcephaly 5, primary, autosomal recessive
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
autosomal recessive primary microcephaly
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen

ASPM links:

ENSG00000300054 (HGNC:):

ENSG00000300054 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005804956).

BP6

Variant 1-197103126-T-C is Benign according to our data. Variant chr1-197103126-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 157850.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.001 (152/152046) while in subpopulation AFR AF = 0.00344 (143/41520). AF 95% confidence interval is 0.00298. There are 0 homozygotes in GnomAd4. There are 68 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ASPM	NM_018136.5 link	c.6125A>G	p.Asp2042Gly	missense_variant	Exon 18 of 28	ENST00000367409.9	NP_060606.3	Q8IZT6-1B3KWI2
ASPM	NM_001206846.2 link	c.4066-6962A>G		intron_variant	Intron 17 of 26		NP_001193775.1	Q8IZT6-2B3KWI2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ASPM	ENST00000367409.9 link	c.6125A>G	p.Asp2042Gly	missense_variant	Exon 18 of 28	1	NM_018136.5	ENSP00000356379.4		Q8IZT6-1

Frequencies

GnomAD3 genomes

AF:

0.000981

AC:

149

AN:

151928

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00338

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000460

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:

0.0000147

Gnomad OTH

AF:

0.000479

GnomAD2 exomes

AF:

0.000308

AC:

AN:

249880

AF XY:

0.000193

show subpopulations

Gnomad AFR exome

AF:

0.00383

Gnomad AMR exome

AF:

0.000348

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000266

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000107

AC:

156

AN:

1460788

Hom.:

Cov.:

AF XY:

0.000105

AC XY:

AN XY:

726722

show subpopulations

African (AFR)

AF:

0.00281

AC:

AN:

33416

American (AMR)

AF:

0.000291

AC:

AN:

44616

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26082

East Asian (EAS)

AF:

0.00

AC:

AN:

39664

South Asian (SAS)

AF:

0.00

AC:

AN:

86224

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53254

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.0000252

AC:

AN:

1111440

Other (OTH)

AF:

0.000332

AC:

AN:

60330

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00100

AC:

152

AN:

152046

Hom.:

Cov.:

AF XY:

0.000915

AC XY:

AN XY:

74344

show subpopulations

African (AFR)

AF:

0.00344

AC:

143

AN:

41520

American (AMR)

AF:

0.000460

AC:

AN:

15224

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5162

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67904

Other (OTH)

AF:

0.000474

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000549

Hom.:

Bravo

AF:

0.00126

ESP6500AA

AF:

0.00431

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000420

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3476

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Microcephaly 5, primary, autosomal recessive

Uncertain:2

Feb 08, 2013

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 10, 2019

Revvity Omics, Revvity

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:2

Nov 29, 2018

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 18, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

Apr 14, 2015

Eurofins Ntd Llc (ga)

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Inborn genetic diseases

Benign:1

Oct 13, 2021

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

ASPM-related disorder

Benign:1

Oct 19, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

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

0.12

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.036

Eigen

Benign

-0.62

Eigen_PC

Benign

-0.61

FATHMM_MKL

Benign

0.26

LIST_S2

Benign

0.61

M_CAP

Benign

0.026

MetaRNN

Benign

0.0058

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.0

PhyloP100

1.7

PrimateAI

Benign

0.25

PROVEAN

Benign

-1.7

REVEL

Benign

0.11

Sift

Benign

0.086

Sift4G

Uncertain

0.039

Polyphen

0.65

Vest4

0.12

MVP

0.62

ClinPred

0.0080

GERP RS

3.1

Varity_R

0.19

gMVP

0.045

Mutation Taster

=90/10

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over