rs13438987

Variant names:

• chr8-15800144-T-C
• rs13438987
• NM_001413679.1:c.938-6219T>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001413679.1(TUSC3):​c.938-6219T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.057 in 152,262 control chromosomes in the GnomAD database, including 794 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.057 (794 hom., cov: 33)
• Consequence: TUSC3 NM_001413679.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.467
• Publications: 2 publications found

Genes affected

TUSC3 (HGNC:30242): (tumor suppressor candidate 3) This gene encodes a protein that has been associated with several biological functions including cellular magnesium uptake, protein glycosylation and embryonic development. This protein localizes to the endoplasmic reticulum and acts as a component of the oligosaccharyl transferase complex which is responsible for N-linked protein glycosylation. This gene is a candidate tumor suppressor gene. Homozygous mutations in this gene are associated with autosomal recessive nonsyndromic mental retardation-7 and in the proliferation and invasiveness of several cancers including metastatic pancreatic cancer, ovarian cancer and glioblastoma multiform. [provided by RefSeq, Oct 2017]

TUSC3 Gene-Disease associations (from GenCC):

• intellectual disability

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• intellectual disability, autosomal recessive 7

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• autosomal recessive non-syndromic intellectual disability

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.96).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.191 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TUSC3	NM_001413679.1	c.938-6219T>C		intron_variant	Intron 8 of 8		NP_001400608.1
TUSC3	NM_001413684.1	c.1029-6219T>C		intron_variant	Intron 9 of 9		NP_001400613.1
TUSC3	NM_001413685.1	c.938-51380T>C		intron_variant	Intron 8 of 8		NP_001400614.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt

Frequencies

GnomAD3 genomes AF: 0.0568 AC: 8639 AN: 152144 Hom.: 789 Cov.: 33

Gnomad AFR AF: 0.194

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0201

Gnomad ASJ AF: 0.00778

Gnomad EAS AF: 0.0217

Gnomad SAS AF: 0.00269

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000676

Gnomad OTH AF: 0.0387

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

GnomAD4 genome AF: 0.0570 AC: 8681 AN: 152262 Hom.: 794 Cov.: 33 AF XY: 0.0550 AC XY: 4094 AN XY: 74468

African (AFR) AF: 0.195 AC: 8086 AN: 41520

American (AMR) AF: 0.0201 AC: 307 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.00778 AC: 27 AN: 3472

East Asian (EAS) AF: 0.0222 AC: 115 AN: 5184

South Asian (SAS) AF: 0.00269 AC: 13 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00680 AC: 2 AN: 294

European-Non Finnish (NFE) AF: 0.000676 AC: 46 AN: 68018

Other (OTH) AF: 0.0402 AC: 85 AN: 2116

Alfa AF: 0.0234 Hom.: 110

Bravo AF: 0.0636

Asia WGS AF: 0.0260 AC: 91 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
CADD	Benign	0.19
DANN	Benign	0.67
PhyloP100		-0.47

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs13438987; hg19: chr8-15657653;