rs141108591

Positions:

• chr1-197146446-C-A
• chr1-197146446-C-G

Variant summary

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

The NM_018136.5(ASPM):​c.-9G>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00061 in 1,605,288 control chromosomes in the GnomAD database, including 11 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00077 (0 hom., cov: 31)
  • Exomes 𝑓: 0.00059 (11 hom.)
• Consequence: ASPM NM_018136.5 5_prime_UTR
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4
• Conservation: PhyloP100: -0.258

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 (BayesDel_noAF=-0.78).
• BP6: Variant 1-197146446-C-A is Benign according to our data. Variant chr1-197146446-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 157768.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000769 (117/152132) while in subpopulation EAS AF= 0.0212 (109/5130). AF 95% confidence interval is 0.018. There are 0 homozygotes in gnomad4. There are 69 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.
• BS2: High Homozygotes in GnomAdExome4 at 11 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ASPM	NM_018136.5	c.-9G>T		5_prime_UTR_variant	1/28	ENST00000367409.9
ASPM	NM_001206846.2	c.-9G>T		5_prime_UTR_variant	1/27

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ASPM	ENST00000367409.9	c.-9G>T		5_prime_UTR_variant	1/28	1	NM_018136.5	P1

Frequencies

GnomAD3 genomes AF: 0.000770 AC: 117 AN: 152010 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0212

Gnomad SAS AF: 0.000624

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.00195 AC: 450 AN: 231340 Hom.: 5 AF XY: 0.00185 AC XY: 237 AN XY: 127958

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000587

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0246

Gnomad SAS exome AF: 0.000297

Gnomad FIN exome AF: 0.0000608

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000345

GnomAD4 exome AF: 0.000594 AC: 863 AN: 1453156 Hom.: 11 Cov.: 31 AF XY: 0.000603 AC XY: 436 AN XY: 722930

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000448

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0202

Gnomad4 SAS exome AF: 0.000209

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000630

Gnomad4 OTH exome AF: 0.000565

GnomAD4 genome AF: 0.000769 AC: 117 AN: 152132 Hom.: 0 Cov.: 31 AF XY: 0.000928 AC XY: 69 AN XY: 74382

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.0212

Gnomad4 SAS AF: 0.000624

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000441

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.0000693 Hom.: 0

Bravo AF: 0.00110

Asia WGS AF: 0.00375 AC: 13 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Microcephaly 5, primary, autosomal recessive Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -
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

Sep 23, 2015

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

May 10, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	6.6
DANN	Benign	0.39
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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: rs141108591; hg19: chr1-197115576;