rs760997514

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM1PP2BP4

The NM_003124.5(SPR):c.266C>T(p.Pro89Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000557 in 1,507,970 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P89R) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000055 ( 0 hom. )

Consequence

SPR
NM_003124.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 0.732

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

dopa-responsive dystonia due to sepiapterin reductase deficiency
Inheritance: AR, AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, G2P, PanelApp Australia, Genomics England PanelApp, ClinGen, Orphanet
BH4-deficient hyperphenylalaninemia A
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

SPR links:

ENSG00000309317 (HGNC:):

ENSG00000309317 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM1

In a chain Sepiapterin reductase (size 260) in uniprot entity SPRE_HUMAN there are 9 pathogenic changes around while only 2 benign (82%) in NM_003124.5

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 6 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: 0.7325 (below the threshold of 3.09). Trascript score misZ: -0.70614 (below the threshold of 3.09). GenCC associations: The gene is linked to dopa-responsive dystonia due to sepiapterin reductase deficiency, BH4-deficient hyperphenylalaninemia A.

BP4

Computational evidence support a benign effect (MetaRNN=0.39055488).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003124.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SPR	NM_003124.5	MANE Select	c.266C>T	p.Pro89Leu	missense	Exon 1 of 3	NP_003115.1	P35270

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SPR	ENST00000234454.6	TSL:1 MANE Select	c.266C>T	p.Pro89Leu	missense	Exon 1 of 3	ENSP00000234454.5	P35270
SPR	ENST00000871611.1		c.266C>T	p.Pro89Leu	missense	Exon 1 of 3	ENSP00000541670.1
SPR	ENST00000871609.1		c.266C>T	p.Pro89Leu	missense	Exon 1 of 3	ENSP00000541668.1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152244

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000376

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000284

AC:

AN:

105724

AF XY:

0.0000169

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 FIN exome

AF:

0.000191

Gnomad NFE exome

AF:

0.0000522

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000553

AC:

AN:

1355726

Hom.:

Cov.:

AF XY:

0.0000598

AC XY:

AN XY:

668770

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

28686

American (AMR)

AF:

0.00

AC:

AN:

32626

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24242

East Asian (EAS)

AF:

0.00

AC:

AN:

32492

South Asian (SAS)

AF:

0.00

AC:

AN:

76972

European-Finnish (FIN)

AF:

0.000662

AC:

AN:

33254

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4120

European-Non Finnish (NFE)

AF:

0.0000459

AC:

AN:

1066990

Other (OTH)

AF:

0.0000710

AC:

AN:

56344

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152244

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74380

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41468

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.000376

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.519

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000718

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000663

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Dopa-responsive dystonia due to sepiapterin reductase deficiency (1)

Dystonic disorder (1)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.085

BayesDel_noAF

Benign

-0.21

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.76

Eigen

Benign

-0.29

Eigen_PC

Benign

-0.32

FATHMM_MKL

Benign

0.20

LIST_S2

Benign

0.67

M_CAP

Pathogenic

0.47

MetaRNN

Benign

0.39

MetaSVM

Uncertain

-0.21

MutationAssessor

Benign

0.74

PhyloP100

0.73

PrimateAI

Uncertain

0.66

PROVEAN

Uncertain

-4.3

REVEL

Uncertain

0.38

Sift

Uncertain

0.011

Sift4G

Uncertain

0.060

Polyphen

0.71

Vest4

0.18

MutPred

0.45

Loss of helix (P = 0.0068)

MVP

0.85

MPC

0.74

ClinPred

0.31

GERP RS

4.1

PromoterAI

-0.069

Neutral

(source)

Varity_R

0.63

gMVP

0.46

Mutation Taster

=81/19

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over