rs756879923

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6BP7

The NM_018136.5(ASPM):ā€‹c.9657T>Gā€‹(p.Ser3219=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000054 in 1,610,406 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: š‘“ 0.000053 ( 0 hom., cov: 32)
Exomes š‘“: 0.000054 ( 1 hom. )

Consequence

ASPM
NM_018136.5 synonymous

Scores

2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 1.68
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.48).
BP6
Variant 1-197090368-A-C is Benign according to our data. Variant chr1-197090368-A-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 289606.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Benign=1, Uncertain_significance=1}. Variant chr1-197090368-A-C is described in Lovd as [Likely_benign].
BP7
Synonymous conserved (PhyloP=1.68 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ASPMNM_018136.5 linkuse as main transcriptc.9657T>G p.Ser3219= synonymous_variant 24/28 ENST00000367409.9 NP_060606.3
ASPMNM_001206846.2 linkuse as main transcriptc.4902T>G p.Ser1634= synonymous_variant 23/27 NP_001193775.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ASPMENST00000367409.9 linkuse as main transcriptc.9657T>G p.Ser3219= synonymous_variant 24/281 NM_018136.5 ENSP00000356379 P1Q8IZT6-1

Frequencies

GnomAD3 genomes
AF:
0.0000526
AC:
8
AN:
152084
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000328
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:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000682
AC:
17
AN:
249198
Hom.:
1
AF XY:
0.0000594
AC XY:
8
AN XY:
134706
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000872
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:
0.000116
Gnomad OTH exome
AF:
0.000165
GnomAD4 exome
AF:
0.0000542
AC:
79
AN:
1458322
Hom.:
1
Cov.:
32
AF XY:
0.0000482
AC XY:
35
AN XY:
725620
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000896
Gnomad4 ASJ exome
AF:
0.0000384
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000568
Gnomad4 OTH exome
AF:
0.0000997
GnomAD4 genome
AF:
0.0000526
AC:
8
AN:
152084
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74274
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.000328
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000441
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000663
Hom.:
0
Bravo
AF:
0.0000680
EpiCase
AF:
0.000164
EpiControl
AF:
0.000356

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:4
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1Benign:2
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJul 17, 2023- -
Likely benign, criteria provided, single submitterclinical testingGeneDxDec 17, 2019- -
Uncertain significance, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Jul 29, 2016- -
not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingGenetic Services Laboratory, University of ChicagoJul 07, 2016- -
ASPM-related disorder Benign:1
Likely benign, no assertion criteria providedclinical testingPreventionGenetics, part of Exact SciencesJun 21, 2019This 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
BayesDel_noAF
Benign
-0.48
CADD
Benign
5.4
DANN
Benign
0.76

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.

Other links and lift over

dbSNP: rs756879923; hg19: chr1-197059498; API