NM_022455.5:c.6450dupC

Variant names:

• chr5-177292143-A-AC
• rs864309639
• NM_022455.5:c.6450dupC

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_022455.5(NSD1):​c.6450dupC​(p.Lys2151GlnfsTer15) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: NSD1 NM_022455.5 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 6.05
• Publications: 1 publications found

Genes affected

NSD1 (HGNC:14234): (nuclear receptor binding SET domain protein 1) This gene encodes a protein containing a SET domain, 2 LXXLL motifs, 3 nuclear translocation signals (NLSs), 4 plant homeodomain (PHD) finger regions, and a proline-rich region. The encoded protein enhances androgen receptor (AR) transactivation, and this enhancement can be increased further in the presence of other androgen receptor associated coregulators. This protein may act as a nucleus-localized, basic transcriptional factor and also as a bifunctional transcriptional regulator. Mutations of this gene have been associated with Sotos syndrome and Weaver syndrome. One version of childhood acute myeloid leukemia is the result of a cryptic translocation with the breakpoints occurring within nuclear receptor-binding Su-var, enhancer of zeste, and trithorax domain protein 1 on chromosome 5 and nucleoporin, 98-kd on chromosome 11. Multiple transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Sep 2018]

NSD1 Gene-Disease associations (from GenCC):

• Beckwith-Wiedemann syndrome due to NSD1 mutation

  Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
• Sotos syndrome

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P, ClinGen
• Sotos syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics

ACMG classification

Our verdict: Pathogenic. The variant received 11 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. There are 83 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 5-177292143-A-AC is Pathogenic according to our data. Variant chr5-177292143-A-AC is described in ClinVar as Pathogenic. ClinVar VariationId is 4141.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022455.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NSD1	NM_022455.5	MANE Select	c.6450dupC	p.Lys2151GlnfsTer15	frameshift	Exon 22 of 23	NP_071900.2
	NSD1	NM_001409301.1		c.6450dupC	p.Lys2151GlnfsTer15	frameshift	Exon 22 of 23	NP_001396230.1
	NSD1	NM_001409302.1		c.6450dupC	p.Lys2151GlnfsTer15	frameshift	Exon 22 of 23	NP_001396231.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NSD1	ENST00000439151.7	TSL:1 MANE Select	c.6450dupC	p.Lys2151GlnfsTer15	frameshift	Exon 22 of 23	ENSP00000395929.2
	NSD1	ENST00000347982.9	TSL:1	c.5577dupC	p.Lys1860GlnfsTer15	frameshift	Exon 23 of 24	ENSP00000343209.5
	NSD1	ENST00000687453.1		c.6141dupC	p.Lys2048GlnfsTer15	frameshift	Exon 19 of 20	ENSP00000508426.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Sotos syndrome Pathogenic:1

Aug 01, 2005

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		6.0
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs864309639; hg19: chr5-176719144;