NM_001003787.4:c.550G>A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001003787.4(STRADA):c.550G>A(p.Asp184Asn) variant causes a missense change. The variant allele was found at a frequency of 0.00000434 in 1,613,768 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. D184D) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

STRADA
NM_001003787.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.86

Publications

1 publications found

Variant links:

Genes affected

STRADA (HGNC:30172): (STE20 related adaptor alpha) The protein encoded by this gene contains a STE20-like kinase domain, but lacks several residues that are critical for catalytic activity, so it is termed a 'pseudokinase'. The protein forms a heterotrimeric complex with serine/threonine kinase 11 (STK11, also known as LKB1) and the scaffolding protein calcium binding protein 39 (CAB39, also known as MO25). The protein activates STK11 leading to the phosphorylation of both proteins and excluding STK11 from the nucleus. The protein is necessary for STK11-induced G1 cell cycle arrest. A mutation in this gene has been shown to result in polyhydramnios, megalencephaly, and symptomatic epilepsy (PMSE) syndrome. Multiple transcript variants encoding different isoforms have been found for this gene. Additional transcript variants have been described but their full-length nature is not known. [provided by RefSeq, Sep 2009]

STRADA Gene-Disease associations (from GenCC):

polyhydramnios, megalencephaly, and symptomatic epilepsy
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, G2P

STRADA links:

ENSG00000125695 (HGNC:):

ENSG00000125695 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.27097118).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STRADA	NM_001003787.4 link	c.550G>A	p.Asp184Asn	missense_variant	Exon 8 of 13	ENST00000336174.12	NP_001003787.1	Q7RTN6-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STRADA	ENST00000336174.12 link	c.550G>A	p.Asp184Asn	missense_variant	Exon 8 of 13	1	NM_001003787.4	ENSP00000336655.6		Q7RTN6-1
ENSG00000125695	ENST00000580553.1 link	n.*495+206G>A		intron_variant	Intron 7 of 11	5		ENSP00000464100.1		J3QR89

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152158

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000119

AC:

AN:

251152

AF XY:

0.0000147

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:

0.0000462

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1461610

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727118

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86240

European-Finnish (FIN)

AF:

0.0000374

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5718

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1111846

Other (OTH)

AF:

0.00

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

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:

0.00000657

AC:

AN:

152158

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74318

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41426

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10598

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.675

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000384

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Jan 27, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.550G>A (p.D184N) alteration is located in exon 8 (coding exon 7) of the STRADA gene. This alteration results from a G to A substitution at nucleotide position 550, causing the aspartic acid (D) at amino acid position 184 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Polyhydramnios, megalencephaly, and symptomatic epilepsy

Uncertain:1

Jul 18, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 184 of the STRADA protein (p.Asp184Asn). This variant is present in population databases (rs200492727, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with STRADA-related conditions. ClinVar contains an entry for this variant (Variation ID: 569294). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.45

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.055

.;.;T;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.

Eigen

Benign

-0.0083

Eigen_PC

Benign

0.21

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.90

D;.;D;.;D;.;D;D;D;D;D;.;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.012

MetaRNN

Benign

0.27

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

0.49

.;.;N;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.

PhyloP100

5.9

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-0.93

.;.;N;.;.;N;.;.;N;N;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.

REVEL

Benign

0.054

Sift

Benign

0.47

.;.;T;.;.;T;.;.;T;T;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.

Sift4G

Benign

0.57

.;.;T;T;.;T;.;.;T;T;.;.;.;.;.;.;.;T;T;.;.;.;.;.;T;.;.;.;.

Polyphen

0.39, 0.16, 0.014

.;B;B;B;B;.;.;.;.;B;.;.;.;.;.;.;.;.;.;.;.;.;.;.;B;.;.;.;.

Vest4

0.31, 0.32, 0.31, 0.35, 0.31, 0.34, 0.30, 0.32

MutPred

0.62

.;.;Gain of MoRF binding (P = 0.0729);.;.;.;.;.;.;.;.;Gain of MoRF binding (P = 0.0729);.;Gain of MoRF binding (P = 0.0729);Gain of MoRF binding (P = 0.0729);Gain of MoRF binding (P = 0.0729);Gain of MoRF binding (P = 0.0729);.;.;Gain of MoRF binding (P = 0.0729);.;Gain of MoRF binding (P = 0.0729);.;.;.;.;.;.;Gain of MoRF binding (P = 0.0729);

MVP

0.76

MPC

0.49

ClinPred

0.53

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.56

gMVP

0.67

Mutation Taster

=73/27

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over