chr3-9475617-CT-C

Variant names:

• chr3-9475617-CT-C
• rs587777329
• NM_001080517.3:c.3856delT

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PVS1_Strong PM2 PP5

The NM_001080517.3(SETD5):​c.3856delT​(p.Ser1286LeufsTer84) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,712 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: SETD5 NM_001080517.3 frameshift
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:5 U:1
• Conservation: PhyloP100: 2.38

Genes affected

SETD5 (HGNC:25566): (SET domain containing 5) This function of this gene has yet to be determined but based on sequence similarity to other SET domain proteins it may function as a histone methyltransferase. Mutations in this gene have been associated with an autosomal dominant form of intellectual disability. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2017]

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.109 CDS is truncated, and there are 0 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 3-9475617-CT-C is Pathogenic according to our data. Variant chr3-9475617-CT-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 127106.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=3, Likely_pathogenic=1}. Variant chr3-9475617-CT-C is described in Lovd as [Pathogenic]. Variant chr3-9475617-CT-C is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SETD5	NM_001080517.3	c.3856delT	p.Ser1286LeufsTer84	frameshift_variant	Exon 23 of 23	ENST00000402198.7	NP_001073986.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SETD5	ENST00000402198.7	c.3856delT	p.Ser1286LeufsTer84	frameshift_variant	Exon 23 of 23	5	NM_001080517.3	ENSP00000385852.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249238 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135204

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: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000165

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461712 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727138

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:5 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Pathogenic:3

Aug 15, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Ser1286Leufs*84) in the SETD5 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 157 amino acid(s) of the SETD5 protein. This variant is present in population databases (no rsID available, gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with severe intellectual disability (PMID: 24680889). In at least one individual the variant was observed to be de novo. ClinVar contains an entry for this variant (Variation ID: 127106). This variant disrupts a region of the SETD5 protein in which other variant(s) (p.Ser1286Leufs*37) have been determined to be pathogenic (PMID: 28549204; Invitae). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -

Apr 21, 2022

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Frameshift variant in the C-terminus predicted to result in protein truncation, as the last 157 amino acids are lost and replaced with 83 incorrect amino acids; Not observed at a significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 24680889) -

Oct 23, 2020

Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency Pathogenic:2

Apr 03, 2014

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Feb 14, 2022

DASA

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3562del;p.(Ser1188Leufs*84) is a null frameshift variant in the SETD5 gene and predicts alteration of the nonsense-mediate decay - NMD is present in a relevant exon to the transcript -PVS1_strong. This variant is not present in population databases (rs587777329, gnomAD; ABraOM no frequency - http://abraom.ib.usp.br/) - PM2. In summary, the currently available evidence indicates that the variant is likely pathogenic. -

Inborn genetic diseases Uncertain:1

Oct 06, 2017

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

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

Other links and lift over

dbSNP: rs587777329; hg19: chr3-9517301;