rs775263946

Variant summary

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

The NM_018136.5(ASPM):​c.8683G>A​(p.Ala2895Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000242 in 1,611,732 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. A2895A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

ASPM
NM_018136.5 missense

Scores

3
16

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 1.23
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]

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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=0.09760061).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ASPMNM_018136.5 linkuse as main transcriptc.8683G>A p.Ala2895Thr missense_variant 18/28 ENST00000367409.9
ASPMNM_001206846.2 linkuse as main transcriptc.4066-4404G>A intron_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ASPMENST00000367409.9 linkuse as main transcriptc.8683G>A p.Ala2895Thr missense_variant 18/281 NM_018136.5 P1Q8IZT6-1

Frequencies

GnomAD3 genomes
AF:
0.0000264
AC:
4
AN:
151742
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000777
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:
0.0000600
AC:
15
AN:
249858
Hom.:
0
AF XY:
0.0000666
AC XY:
9
AN XY:
135074
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000600
Gnomad SAS exome
AF:
0.000131
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000240
AC:
35
AN:
1459990
Hom.:
0
Cov.:
31
AF XY:
0.0000262
AC XY:
19
AN XY:
726316
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.000681
Gnomad4 SAS exome
AF:
0.0000928
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000264
AC:
4
AN:
151742
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74106
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000777
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000227
ExAC
AF:
0.0000824
AC:
10
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingGenetic Services Laboratory, University of ChicagoDec 23, 2014- -
Microcephaly 5, primary, autosomal recessive Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingGenome-Nilou LabApr 11, 2023- -
not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Sep 09, 2016- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.14
BayesDel_addAF
Benign
-0.26
T
BayesDel_noAF
Benign
-0.25
CADD
Benign
19
DANN
Benign
0.97
DEOGEN2
Benign
0.044
T
Eigen
Benign
-0.053
Eigen_PC
Benign
-0.099
FATHMM_MKL
Uncertain
0.79
D
LIST_S2
Benign
0.72
T
M_CAP
Uncertain
0.10
D
MetaRNN
Benign
0.098
T
MetaSVM
Benign
-0.47
T
MutationAssessor
Uncertain
2.7
M
MutationTaster
Benign
1.0
D;D;N
PrimateAI
Benign
0.26
T
PROVEAN
Benign
-1.5
N
REVEL
Benign
0.23
Sift
Benign
0.12
T
Sift4G
Benign
0.079
T
Polyphen
0.72
P
Vest4
0.32
MutPred
0.43
Loss of stability (P = 0.0359);
MVP
0.68
ClinPred
0.067
T
GERP RS
4.0
Varity_R
0.089
gMVP
0.011

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: rs775263946; hg19: chr1-197069698; API