Variant chr2-72887426-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_003124.5(SPR):c.-7C>G variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00283 in 1,486,604 control chromosomes in the GnomAD database, including 113 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.015 ( 59 hom., cov: 33)

Exomes 𝑓: 0.0014 ( 54 hom. )

Consequence

SPR
NM_003124.5 5_prime_UTR

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -1.65

Variant links:

Genes affected

SPR (HGNC:11257): (sepiapterin reductase) This gene encodes an aldo-keto reductase that catalyzes the NADPH-dependent reduction of pteridine derivatives and is important in the biosynthesis of tetrahydrobiopterin (BH4). Mutations in this gene result in DOPA-responsive dystonia due to sepiaterin reductase deficiency. A pseudogene has been identified on chromosome 1. [provided by RefSeq, Jul 2008]

SPR 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=-0.75).

BP6

Variant 2-72887426-C-G is Benign according to our data. Variant chr2-72887426-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 336987.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0516 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SPR	NM_003124.5 linkuse as main transcript	c.-7C>G		5_prime_UTR_variant	1/3	ENST00000234454.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SPR	ENST00000234454.6 linkuse as main transcript	c.-7C>G		5_prime_UTR_variant	1/3	1	NM_003124.5	P1
SPR	ENST00000498749.1 linkuse as main transcript	n.45C>G		non_coding_transcript_exon_variant	1/3	3

Frequencies

GnomAD3 genomes

AF:

0.0152

AC:

2306

AN:

152102

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0536

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00393

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00318

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00717

GnomAD3 exomes

AF:

0.00170

AC:

168

AN:

98816

Hom.:

AF XY:

0.00117

AC XY:

AN XY:

56284

show subpopulations

Gnomad AFR exome

AF:

0.0439

Gnomad AMR exome

AF:

0.00237

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000566

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000256

Gnomad OTH exome

AF:

0.00161

GnomAD4 exome

AF:

0.00142

AC:

1895

AN:

1334394

Hom.:

Cov.:

AF XY:

0.00119

AC XY:

787

AN XY:

658998

show subpopulations

Gnomad4 AFR exome

AF:

0.0585

Gnomad4 AMR exome

AF:

0.00307

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000683

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000227

Gnomad4 OTH exome

AF:

0.00304

GnomAD4 genome

AF:

0.0152

AC:

2308

AN:

152210

Hom.:

Cov.:

AF XY:

0.0147

AC XY:

1091

AN XY:

74434

show subpopulations

Gnomad4 AFR

AF:

0.0535

Gnomad4 AMR

AF:

0.00392

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00710

Alfa

AF:

0.0103

Hom.:

Bravo

AF:

0.0170

Asia WGS

AF:

0.00116

AC:

AN:

3452

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	May 20, 2019	- -

Dopa-responsive dystonia due to sepiapterin reductase deficiency

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Oct 08, 2021	- -
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 benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.75

CADD

Benign

3.6

DANN

Benign

0.39

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

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