16-51136405-CTT-C

Variant names:

• chr16-51136405-CTT-C
• rs886052076
• NM_002968.3:c.*705_*706delAA

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BS1_Supporting

The NM_002968.3(SALL1):​c.*705_*706delAA variant causes a 3 prime UTR change. The variant allele was found at a frequency of 0.0000197 in 152,298 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.000020 (0 hom., cov: 33)
• Consequence: SALL1 NM_002968.3 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.08
• Publications: 0 publications found

Genes affected

SALL1 (HGNC:10524): (spalt like transcription factor 1) The protein encoded by this gene is a zinc finger transcriptional repressor and may be part of the NuRD histone deacetylase complex (HDAC). Defects in this gene are a cause of Townes-Brocks syndrome (TBS) as well as bronchio-oto-renal syndrome (BOR). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

SALL1 Gene-Disease associations (from GenCC):

• Townes-Brocks syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia
• Townes-Brocks syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• BS1: Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000197 (3/152298) while in subpopulation EAS AF = 0.000578 (3/5190). AF 95% confidence interval is 0.000157. There are 0 homozygotes in GnomAd4. There are 2 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002968.3. 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
	SALL1	NM_002968.3	MANE Select	c.*705_*706delAA		3_prime_UTR	Exon 3 of 3	NP_002959.2	Q9NSC2-1
	SALL1	NM_001127892.2		c.*705_*706delAA		3_prime_UTR	Exon 3 of 3	NP_001121364.1	Q9NSC2-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SALL1	ENST00000251020.9	TSL:1 MANE Select	c.*705_*706delAA		3_prime_UTR	Exon 3 of 3	ENSP00000251020.4	Q9NSC2-1
	SALL1	ENST00000440970.6	TSL:5	c.*705_*706delAA		3_prime_UTR	Exon 4 of 4	ENSP00000407914.2	Q9NSC2-1
	SALL1	ENST00000685868.1		c.*705_*706delAA		3_prime_UTR	Exon 4 of 4	ENSP00000509873.1	Q9NSC2-1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152180 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000577

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

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152298 Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2 AN XY: 74476

African (AFR) AF: 0.00 AC: 0 AN: 41572

American (AMR) AF: 0.00 AC: 0 AN: 15304

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.000578 AC: 3 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10606

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2112

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Townes-Brocks syndrome 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		5.1

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

Other links and lift over

dbSNP: rs886052076; hg19: chr16-51170316;