chr13-102862408-G-C

Variant names:

• chr13-102862408-G-C
• NM_000123.4:c.1259G>C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000123.4(ERCC5):​c.1259G>C​(p.Arg420Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,457,540 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R420H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: ERCC5 NM_000123.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.208

Genes affected

ERCC5 (HGNC:3437): (ERCC excision repair 5, endonuclease) This gene encodes a single-strand specific DNA endonuclease that makes the 3' incision in DNA excision repair following UV-induced damage. The protein may also function in other cellular processes, including RNA polymerase II transcription, and transcription-coupled DNA repair. Mutations in this gene cause xeroderma pigmentosum complementation group G (XP-G), which is also referred to as xeroderma pigmentosum VII (XP7), a skin disorder characterized by hypersensitivity to UV light and increased susceptibility for skin cancer development following UV exposure. Some patients also develop Cockayne syndrome, which is characterized by severe growth defects, cognitive disability, and cachexia. Read-through transcription exists between this gene and the neighboring upstream BIVM (basic, immunoglobulin-like variable motif containing) gene. [provided by RefSeq, Feb 2011]

BIVM-ERCC5 (HGNC:43690): (BIVM-ERCC5 readthrough) This locus represents naturally occurring read-through transcription between the neighboring BIVM (basic, immunoglobulin-like variable motif containing) and ERCC5 (excision repair cross-complementing rodent repair deficiency, complementation group 5) genes on chromosome 13. The read-through transcript encodes a fusion protein that shares sequence identity with the products of each individual gene. [provided by RefSeq, Feb 2011]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.049853265).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ERCC5	NM_000123.4	c.1259G>C	p.Arg420Pro	missense_variant	Exon 8 of 15	ENST00000652225.2	NP_000114.3
BIVM-ERCC5	NM_001204425.2	c.2621G>C	p.Arg874Pro	missense_variant	Exon 16 of 23		NP_001191354.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ERCC5	ENST00000652225.2	c.1259G>C	p.Arg420Pro	missense_variant	Exon 8 of 15		NM_000123.4	ENSP00000498881.2
BIVM-ERCC5	ENST00000639435.1	c.2621G>C	p.Arg874Pro	missense_variant	Exon 18 of 25	5		ENSP00000491742.1
BIVM-ERCC5	ENST00000639132.1	c.1934G>C	p.Arg645Pro	missense_variant	Exon 17 of 24	5		ENSP00000492684.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.86e-7 AC: 1 AN: 1457540 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 725196

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.37	T
BayesDel_noAF	Benign	-0.77
CADD	Benign	0.0020
DANN	Benign	0.61
DEOGEN2	Benign	0.040	.;.;.;T
Eigen	Benign	-1.9
Eigen_PC	Benign	-2.0
FATHMM_MKL	Benign	0.026	N
LIST_S2	Benign	0.19	T;T;.;T
M_CAP	Benign	0.0031	T
MetaRNN	Benign	0.050	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.76	.;.;.;N
PROVEAN	Benign	0.53	.;.;.;N
REVEL	Benign	0.0070
Sift	Benign	0.34	.;.;.;T
Sift4G	Benign	0.34	.;.;.;T
Polyphen		0.0	.;.;.;B
Vest4		0.043
MutPred		0.33		.;.;.;Gain of sheet (P = 0.0125);
MVP		0.12
MPC		0.17
ClinPred		0.062	T
GERP RS		-5.5
Varity_R		0.061
gMVP		0.26

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr13-103514758;