Genetic Variant SALL4:p.Arg905* (chr20-51788890-G-A) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1_StrongPM2PP3_ModeratePP5_Moderate

The NM_020436.5(SALL4):c.2713C>T(p.Arg905*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

SALL4
NM_020436.5 stop_gained

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:2O:1

Conservation

PhyloP100: 2.63

Publications

5 publications found

Variant links:

Genes affected

SALL4 (HGNC:15924): (spalt like transcription factor 4) This gene encodes a zinc finger transcription factor thought to play a role in the development of abducens motor neurons. Defects in this gene are a cause of Duane-radial ray syndrome (DRRS). Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2015]

SALL4 Gene-Disease associations (from GenCC):

Duane-radial ray syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia
Duane retraction syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
IVIC syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

SALL4 links:

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ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most 50 bp of the penultimate exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.142 CDS is truncated, and there are 3 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

PP5

Variant 20-51788890-G-A is Pathogenic according to our data. Variant chr20-51788890-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 3328.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020436.5. 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
	SALL4	NM_020436.5	MANE Select	c.2713C>T	p.Arg905*	stop_gained	Exon 3 of 4	NP_065169.1
	SALL4	NM_001318031.2		c.1402C>T	p.Arg468*	stop_gained	Exon 3 of 4	NP_001304960.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SALL4	ENST00000217086.9	TSL:1 MANE Select	c.2713C>T	p.Arg905*	stop_gained	Exon 3 of 4	ENSP00000217086.4
SALL4	ENST00000395997.3	TSL:1	c.1402C>T	p.Arg468*	stop_gained	Exon 3 of 4	ENSP00000379319.3
SALL4	ENST00000371539.7	TSL:1	c.382C>T	p.Arg128*	stop_gained	Exon 2 of 3	ENSP00000360594.3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

251344

AF XY:

0.00

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:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727244

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112012

Other (OTH)

AF:

0.00

AC:

AN:

60396

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

ClinVar submissions as Germline

Significance:Likely pathogenic

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Duane-radial ray syndrome (2)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.60

BayesDel_noAF

Pathogenic

0.50

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Uncertain

0.81

PhyloP100

2.6

Vest4

0.95

GERP RS

3.6

Mutation Taster

=8/192

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.95

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.95

Position offset: 2

DS_DL_spliceai

0.23

Position offset: -29

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over