NM_031157.4:c.127dupT

Variant names:

• chr12-54281496-C-CT
• NM_031157.4:c.127dupT

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_031157.4(HNRNPA1):​c.127dupT​(p.Cys43LeufsTer71) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: HNRNPA1 NM_031157.4 frameshift
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.90
• Publications: 0 publications found

Genes affected

HNRNPA1 (HGNC:5031): (heterogeneous nuclear ribonucleoprotein A1) This gene encodes a member of a family of ubiquitously expressed heterogeneous nuclear ribonucleoproteins (hnRNPs), which are RNA-binding proteins that associate with pre-mRNAs in the nucleus and influence pre-mRNA processing, as well as other aspects of mRNA metabolism and transport. The protein encoded by this gene is one of the most abundant core proteins of hnRNP complexes and plays a key role in the regulation of alternative splicing. Mutations in this gene have been observed in individuals with amyotrophic lateral sclerosis 20. Multiple alternatively spliced transcript variants have been found. There are numerous pseudogenes of this gene distributed throughout the genome. [provided by RefSeq, Feb 2016]

HNRNPA1 Gene-Disease associations (from GenCC):

• amyotrophic lateral sclerosis type 20

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• inclusion body myopathy with early-onset Paget disease with or without frontotemporal dementia 3

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• amyotrophic lateral sclerosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• inclusion body myopathy with Paget disease of bone and frontotemporal dementia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000258344 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_031157.4. 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
	HNRNPA1	NM_031157.4	MANE Select	c.127dupT	p.Cys43LeufsTer71	frameshift	Exon 2 of 11	NP_112420.1	P09651-1
	HNRNPA1	NM_002136.4		c.127dupT	p.Cys43LeufsTer71	frameshift	Exon 2 of 10	NP_002127.1	P09651-2
	HNRNPA1	NR_135167.2		n.209dupT		non_coding_transcript_exon	Exon 2 of 11

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HNRNPA1	ENST00000340913.11	TSL:1 MANE Select	c.127dupT	p.Cys43LeufsTer71	frameshift	Exon 2 of 11	ENSP00000341826.7	P09651-1
	HNRNPA1	ENST00000546500.5	TSL:1	c.127dupT	p.Cys43LeufsTer71	frameshift	Exon 2 of 10	ENSP00000448617.1	P09651-2
	HNRNPA1	ENST00000547276.5	TSL:1	c.127dupT	p.Cys43LeufsTer71	frameshift	Exon 2 of 9	ENSP00000447260.1	P09651-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		7.9

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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

hg19: chr12-54675280;