1-197086785-C-T

Variant summary

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

The NM_018136.5(ASPM):c.10331+18G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000828 in 1,574,600 control chromosomes in the GnomAD database, including 17 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00047 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00087 ( 16 hom. )

Consequence

ASPM
NM_018136.5 intron

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -1.05

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 (BayesDel_noAF=-0.84).

BP6

Variant 1-197086785-C-T is Benign according to our data. Variant chr1-197086785-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 377499.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-197086785-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000473 (72/152264) while in subpopulation SAS AF= 0.0141 (68/4830). AF 95% confidence interval is 0.0114. There are 1 homozygotes in gnomad4. There are 50 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome at 7 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ASPM	NM_018136.5 linkuse as main transcript	c.10331+18G>A		intron_variant		ENST00000367409.9
ASPM	NM_001206846.2 linkuse as main transcript	c.5576+18G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ASPM	ENST00000367409.9 linkuse as main transcript	c.10331+18G>A		intron_variant		1	NM_018136.5	P1	Q8IZT6-1

Frequencies

GnomAD3 genomes

AF:

0.000473

AC:

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.0141

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.00174

AC:

434

AN:

249900

Hom.:

AF XY:

0.00218

AC XY:

295

AN XY:

135268

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0139

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000887

Gnomad OTH exome

AF:

0.00131

GnomAD4 exome

AF:

0.000865

AC:

1231

AN:

1422336

Hom.:

Cov.:

AF XY:

0.00123

AC XY:

875

AN XY:

710226

show subpopulations

Gnomad4 AFR exome

AF:

0.0000304

Gnomad4 AMR exome

AF:

0.0000672

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0134

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000158

Gnomad4 OTH exome

AF:

0.00107

GnomAD4 genome

AF:

0.000473

AC:

AN:

152264

Hom.:

Cov.:

AF XY:

0.000672

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.0141

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000128

Hom.:

Bravo

AF:

0.000128

Asia WGS

AF:

0.00463

AC:

AN:

3472

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Microcephaly 5, primary, autosomal recessive

Benign:1

Benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Apr 11, 2023

- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

May 22, 2017

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Dec 01, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

Cadd

Benign

0.44

Dann

Benign

0.26

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