Genetic Variant SCLY:p.Thr39Ala (chr2-238064382-A-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_016510.7(SCLY):c.115A>G(p.Thr39Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000412 in 1,456,768 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

SCLY
NM_016510.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.86

Variant links:

Genes affected

SCLY (HGNC:18161): (selenocysteine lyase) Selenocysteine lyase (SCLY; EC 4.4.1.16) catalyzes the pyridoxal 5-prime phosphate-dependent conversion of L-selenocysteine to L-alanine and elemental selenium (Mihara et al., 2000 [PubMed 10692412]).[supplied by OMIM, Mar 2008]

SCLY links:

UBE2F-SCLY (HGNC:48339): (UBE2F-SCLY readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring UBE2F (ubiquitin-conjugating enzyme E2F) and SCLY (selenocysteine lyase) genes on chromosome 2. The read-through transcript is a candidate for non-sense mediated mRNA decay (NMD), and is unlikely to produce a protein product. [provided by RefSeq, Feb 2011]

UBE2F-SCLY links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.909

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCLY	NM_016510.7 link	c.115A>G	p.Thr39Ala	missense_variant	Exon 2 of 12	ENST00000254663.12	NP_057594.5	Q96I15-1B4DDP9A0A0A0MQU4Q59FK2
UBE2F-SCLY	NR_037904.1 link	n.691A>G		non_coding_transcript_exon_variant	Exon 9 of 19

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SCLY	ENST00000254663.12 link	c.115A>G	p.Thr39Ala	missense_variant	Exon 2 of 12	1	NM_016510.7	ENSP00000254663.7	Q96I15-1
UBE2F-SCLY	ENST00000449191.1 link	n.*288A>G		non_coding_transcript_exon_variant	Exon 10 of 11	3		ENSP00000456827.1	H3BSR4
UBE2F-SCLY	ENST00000449191.1 link	n.*288A>G		3_prime_UTR_variant	Exon 10 of 11	3		ENSP00000456827.1	H3BSR4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000812

AC:

AN:

246184

Hom.:

AF XY:

0.0000150

AC XY:

AN XY:

133194

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 SAS exome

AF:

0.0000677

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000412

AC:

AN:

1456768

Hom.:

Cov.:

AF XY:

0.00000690

AC XY:

AN XY:

724752

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000229

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000469

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.01e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 28, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.139A>G (p.T47A) alteration is located in exon 2 (coding exon 2) of the SCLY gene. This alteration results from a A to G substitution at nucleotide position 139, causing the threonine (T) at amino acid position 47 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.42

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Pathogenic

0.23

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

0.77

Eigen_PC

Pathogenic

0.67

FATHMM_MKL

Uncertain

0.97

LIST_S2

Benign

0.70

T;.;T;T

M_CAP

Uncertain

0.22

MetaRNN

Pathogenic

0.91

D;D;D;D

MetaSVM

Uncertain

0.60

MutationAssessor

Pathogenic

3.2

.;.;M;.

PrimateAI

Uncertain

0.63

PROVEAN

Pathogenic

-4.6

D;D;D;D

REVEL

Pathogenic

0.87

Sift

Uncertain

0.012

D;T;D;D

Sift4G

Uncertain

0.0030

D;D;D;D

Polyphen

1.0

.;.;D;.

Vest4

0.84

MVP

0.93

MPC

0.43

ClinPred

0.94

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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