Variant chr16-89524249-TGAGTGAGGGTGCGGGAGGCCTGTGAGTGAGGGTGTGGGCACAGGCTGGCAGCCTGTGA-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 1P and 16B. PP3BP6_Very_StrongBS1BS2

The NM_003119.4(SPG7):c.618+11_618+68del variant causes a splice donor 5th base, intron change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000411 in 1,608,672 control chromosomes in the GnomAD database, including 5 homozygotes. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0021 ( 4 hom., cov: 30)

Exomes 𝑓: 0.00023 ( 1 hom. )

Consequence

SPG7
NM_003119.4 splice_donor_5th_base, intron

Scores

Not classified

Clinical Significance

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

Conservation

PhyloP100: 9.46

Variant links:

Genes affected

SPG7 (HGNC:11237): (SPG7 matrix AAA peptidase subunit, paraplegin) This gene encodes a mitochondrial metalloprotease protein that is a member of the AAA family. Members of this protein family share an ATPase domain and have roles in diverse cellular processes including membrane trafficking, intracellular motility, organelle biogenesis, protein folding, and proteolysis. Mutations in this gene cause autosomal recessive spastic paraplegia 7. Two transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, Mar 2014]

SPG7 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

PP3

No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

BP6

Variant 16-89524249-TGAGTGAGGGTGCGGGAGGCCTGTGAGTGAGGGTGTGGGCACAGGCTGGCAGCCTGTGA-T is Benign according to our data. Variant chr16-89524249-TGAGTGAGGGTGCGGGAGGCCTGTGAGTGAGGGTGTGGGCACAGGCTGGCAGCCTGTGA-T is described in ClinVar as [Likely_benign]. Clinvar id is 215504.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 = 0.0021 (319/151870) while in subpopulation AFR AF= 0.00746 (309/41402). AF 95% confidence interval is 0.00678. There are 4 homozygotes in gnomad4. There are 150 alleles in male gnomad4 subpopulation. Median coverage is 30. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 4 Mitochondrial gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SPG7	NM_003119.4 linkuse as main transcript	c.618+11_618+68del		splice_donor_5th_base_variant, intron_variant		ENST00000645818.2	NP_003110.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SPG7	ENST00000645818.2 linkuse as main transcript	c.618+11_618+68del		splice_donor_5th_base_variant, intron_variant			NM_003119.4	ENSP00000495795	P2	Q9UQ90-1

Frequencies

GnomAD3 genomes

AF:

0.00210

AC:

319

AN:

151752

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00749

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000460

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:

0.00

Gnomad OTH

AF:

0.00144

GnomAD3 exomes

AF:

0.000582

AC:

145

AN:

249300

Hom.:

AF XY:

0.000378

AC XY:

AN XY:

134946

show subpopulations

Gnomad AFR exome

AF:

0.00871

Gnomad AMR exome

AF:

0.0000868

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:

0.00

Gnomad OTH exome

AF:

0.000329

GnomAD4 exome

AF:

0.000235

AC:

342

AN:

1456802

Hom.:

AF XY:

0.000207

AC XY:

150

AN XY:

724144

show subpopulations

Gnomad4 AFR exome

AF:

0.00854

Gnomad4 AMR exome

AF:

0.000179

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000465

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.000682

GnomAD4 genome

AF:

0.00210

AC:

319

AN:

151870

Hom.:

Cov.:

AF XY:

0.00202

AC XY:

150

AN XY:

74244

show subpopulations

Gnomad4 AFR

AF:

0.00746

Gnomad4 AMR

AF:

0.000459

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00143

Alfa

AF:

0.000843

Hom.:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Oct 01, 2023	SPG7: BS2 -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 07, 2020	This variant is associated with the following publications: (PMID: 22964162) -

Hereditary spastic paraplegia 7

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 29, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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