NM_031844.3:c.596dupC

Variant names:

• chr1-244863711-C-CG
• rs1553283831
• NM_031844.3:c.596dupC

Variant summary

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

The NM_031844.3(HNRNPU):​c.596dupC​(p.Pro200AlafsTer14) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: HNRNPU NM_031844.3 frameshift
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 2.13
• Publications: 0 publications found

Genes affected

HNRNPU (HGNC:5048): (heterogeneous nuclear ribonucleoprotein U) This gene encodes a member of a family of proteins that bind nucleic acids and function in the formation of ribonucleoprotein complexes in the nucleus with heterogeneous nuclear RNA (hnRNA). The encoded protein has affinity for both RNA and DNA, and binds scaffold-attached region (SAR) DNA. Mutations in this gene have been associated with epileptic encephalopathy, early infantile, 54. A pseudogene of this gene has been identified on chromosome 14. [provided by RefSeq, Jun 2017]

HNRNPU Gene-Disease associations (from GenCC):

• complex neurodevelopmental disorder

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• developmental and epileptic encephalopathy, 54

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P

ENSG00000273175 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 1-244863711-C-CG is Pathogenic according to our data. Variant chr1-244863711-C-CG is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 438295.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_031844.3. 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
	HNRNPU	NM_031844.3	MANE Select	c.596dupC	p.Pro200AlafsTer14	frameshift	Exon 1 of 14	NP_114032.2	Q00839-1
	HNRNPU	NM_004501.3		c.596dupC	p.Pro200AlafsTer24	frameshift	Exon 1 of 14	NP_004492.2	Q00839-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HNRNPU	ENST00000640218.2	TSL:1 MANE Select	c.596dupC	p.Pro200AlafsTer14	frameshift	Exon 1 of 14	ENSP00000491215.1	Q00839-1
	HNRNPU	ENST00000444376.7	TSL:1	c.596dupC	p.Pro200AlafsTer24	frameshift	Exon 1 of 14	ENSP00000393151.2	Q00839-2
	HNRNPU	ENST00000919769.1		c.596dupC	p.Pro200AlafsTer14	frameshift	Exon 1 of 15	ENSP00000589828.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1414450 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 701916

African (AFR) AF: 0.00 AC: 0 AN: 30838

American (AMR) AF: 0.00 AC: 0 AN: 39310

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25048

East Asian (EAS) AF: 0.00 AC: 0 AN: 36888

South Asian (SAS) AF: 0.00 AC: 0 AN: 82932

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 39424

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5562

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1095662

Other (OTH) AF: 0.00 AC: 0 AN: 58786

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Likely pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Intellectual disability (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.1

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: rs1553283831; hg19: chr1-245027013;