NM_004628.5:c.1421dupA

Variant names:

• chr3-14158461-C-CT
• rs1553605761
• NM_004628.5:c.1421dupA

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_004628.5(XPC):​c.1421dupA​(p.Arg475GlufsTer19) 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 Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: XPC NM_004628.5 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: -0.381
• Publications: 0 publications found

Genes affected

XPC (HGNC:12816): (XPC complex subunit, DNA damage recognition and repair factor) The protein encoded by this gene is a key component of the XPC complex, which plays an important role in the early steps of global genome nucleotide excision repair (NER). The encoded protein is important for damage sensing and DNA binding, and shows a preference for single-stranded DNA. Mutations in this gene or some other NER components can result in Xeroderma pigmentosum, a rare autosomal recessive disorder characterized by increased sensitivity to sunlight with the development of carcinomas at an early age. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Aug 2017]

XPC-AS1 (HGNC:55014): (XPC antisense RNA 1)

ACMG classification

Our verdict: Pathogenic. The variant received 12 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 3-14158461-C-CT is Pathogenic according to our data. Variant chr3-14158461-C-CT is described in ClinVar as Pathogenic. ClinVar VariationId is 555393.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004628.5. 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
	XPC	NM_004628.5	MANE Select	c.1421dupA	p.Arg475GlufsTer19	frameshift	Exon 9 of 16	NP_004619.3
	XPC	NM_001354727.2		c.1421dupA	p.Arg475GlufsTer19	frameshift	Exon 9 of 16	NP_001341656.1
	XPC	NM_001354729.2		c.1403dupA	p.Arg469GlufsTer19	frameshift	Exon 9 of 16	NP_001341658.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	XPC	ENST00000285021.12	TSL:1 MANE Select	c.1421dupA	p.Arg475GlufsTer19	frameshift	Exon 9 of 16	ENSP00000285021.8
	XPC	ENST00000476581.6	TSL:1	n.*874dupA		non_coding_transcript_exon	Exon 8 of 15	ENSP00000424548.1
	XPC	ENST00000476581.6	TSL:1	n.*874dupA		3_prime_UTR	Exon 8 of 15	ENSP00000424548.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	not provided (1)
1	-	-	Xeroderma pigmentosum, group C (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.38
Mutation Taster		=1/199	disease causing (ClinVar)

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: rs1553605761; hg19: chr3-14199961;