3-14146130-TG-CA

Variant names:

• chr3-14146130-TG-CA
• NM_004628.5:c.2633_2634delCAinsTG
• XPC p.Ala878Val

Variant summary

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

The NM_004628.5(XPC):​c.2633_2634delCAinsTG​(p.Ala878Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A878G) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 28)
• Consequence: XPC NM_004628.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0890
• 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]

ENSG00000268279 (HGNC:):

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	XPC	NM_004628.5	MANE Select	c.2633_2634delCAinsTG	p.Ala878Val	missense	N/A	NP_004619.3
	XPC	NM_001354727.2		c.2627_2628delCAinsTG	p.Ala876Val	missense	N/A	NP_001341656.1	A0ABB0MVJ4
	XPC	NM_001354729.2		c.2615_2616delCAinsTG	p.Ala872Val	missense	N/A	NP_001341658.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	XPC	ENST00000285021.12	TSL:1 MANE Select	c.2633_2634delCAinsTG	p.Ala878Val	missense	N/A	ENSP00000285021.8	Q01831-1
	XPC	ENST00000476581.6	TSL:1	n.*2086_*2087delCAinsTG		non_coding_transcript_exon	Exon 15 of 15	ENSP00000424548.1	Q01831-3
	XPC	ENST00000476581.6	TSL:1	n.*2086_*2087delCAinsTG		3_prime_UTR	Exon 15 of 15	ENSP00000424548.1	Q01831-3

Frequencies

GnomAD3 genomes Cov.: 28

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 28

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.089

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr3-14187630;