rs62623455

Positions:

• chr1-197104045-G-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The ENST00000367409.9(ASPM):​c.5206C>G​(p.Gln1736Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00145 in 1,612,766 control chromosomes in the GnomAD database, including 26 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0074 (13 hom., cov: 33)
  • Exomes 𝑓: 0.00083 (13 hom.)
• Consequence: ASPM ENST00000367409.9 missense
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6
• Conservation: PhyloP100: 8.11

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]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.009739429).
• BP6: Variant 1-197104045-G-C is Benign according to our data. Variant chr1-197104045-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 136426.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00739 (1123/151996) while in subpopulation AFR AF= 0.0258 (1072/41514). AF 95% confidence interval is 0.0245. There are 13 homozygotes in gnomad4. There are 497 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 13 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ASPM	NM_018136.5	c.5206C>G	p.Gln1736Glu	missense_variant	18/28	ENST00000367409.9	NP_060606.3
ASPM	NM_001206846.2	c.4066-7881C>G		intron_variant			NP_001193775.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ASPM	ENST00000367409.9	c.5206C>G	p.Gln1736Glu	missense_variant	18/28	1	NM_018136.5	ENSP00000356379	P1

Frequencies

GnomAD3 genomes AF: 0.00737 AC: 1120 AN: 151878 Hom.: 13 Cov.: 33

Gnomad AFR AF: 0.0258

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00184

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000103

Gnomad OTH AF: 0.00719

GnomAD3 exomes AF: 0.00218 AC: 546 AN: 250256 Hom.: 5 AF XY: 0.00154 AC XY: 208 AN XY: 135262

Gnomad AFR exome AF: 0.0298

Gnomad AMR exome AF: 0.00130

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: 0.000115

Gnomad OTH exome AF: 0.000656

GnomAD4 exome AF: 0.000834 AC: 1219 AN: 1460770 Hom.: 13 Cov.: 38 AF XY: 0.000716 AC XY: 520 AN XY: 726718

Gnomad4 AFR exome AF: 0.0268

Gnomad4 AMR exome AF: 0.00157

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000151

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000110

Gnomad4 OTH exome AF: 0.00177

GnomAD4 genome AF: 0.00739 AC: 1123 AN: 151996 Hom.: 13 Cov.: 33 AF XY: 0.00669 AC XY: 497 AN XY: 74296

Gnomad4 AFR AF: 0.0258

Gnomad4 AMR AF: 0.00184

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000103

Gnomad4 OTH AF: 0.00712

Alfa AF: 0.00259 Hom.: 3

Bravo AF: 0.00877

ESP6500AA AF: 0.0257 AC: 113

ESP6500EA AF: 0.000349 AC: 3

ExAC AF: 0.00256 AC: 311

Asia WGS AF: 0.00144 AC: 5 AN: 3476

EpiCase AF: 0.000109

EpiControl AF: 0.000296

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 22, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Dec 27, 2017	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Microcephaly 5, primary, autosomal recessive Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Sep 27, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Apr 11, 2023	- -

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Feb 08, 2013

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Uncertain	-0.060
CADD	Uncertain	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.41	T
Eigen	Pathogenic	0.86
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.91	D
MetaRNN	Benign	0.0097	T
MetaSVM	Uncertain	0.40	D
MutationAssessor	Pathogenic	4.3	H
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Benign	0.39	T
PROVEAN	Benign	-2.2	N
REVEL	Uncertain	0.63
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.70
MVP		0.96
ClinPred		0.11	T
GERP RS		6.0
Varity_R		0.87
gMVP		0.19

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

Other links and lift over

dbSNP: rs62623455; hg19: chr1-197073175;